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/home/tahkoom/public_html/wp-includes/sodium_compat/src/Compat.php
<?php
/**
* Libsodium compatibility layer
*
* This is the only class you should be interfacing with, as a user of
* sodium_compat.
*
* If the PHP extension for libsodium is installed, it will always use that
* instead of our implementations. You get better performance and stronger
* guarantees against side-channels that way.
*
* However, if your users don't have the PHP extension installed, we offer a
* compatible interface here. It will give you the correct results as if the
* PHP extension was installed. It won't be as fast, of course.
*
* CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION *
* *
* Until audited, this is probably not safe to use! DANGER WILL ROBINSON *
* *
* CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION * CAUTION *
*/
if (class_exists('ParagonIE_Sodium_Compat', false)) {
return;
}
class ParagonIE_Sodium_Compat
{
/**
* This parameter prevents the use of the PECL extension.
* It should only be used for unit testing.
*
* @var bool
*/
public static $disableFallbackForUnitTests = false;
/**
* Use fast multiplication rather than our constant-time multiplication
* implementation. Can be enabled at runtime. Only enable this if you
* are absolutely certain that there is no timing leak on your platform.
*
* @var bool
*/
public static $fastMult = false;
const LIBRARY_MAJOR_VERSION = 9;
const LIBRARY_MINOR_VERSION = 1;
const LIBRARY_VERSION_MAJOR = 9;
const LIBRARY_VERSION_MINOR = 1;
const VERSION_STRING = 'polyfill-1.0.8';
// From libsodium
const BASE64_VARIANT_ORIGINAL = 1;
const BASE64_VARIANT_ORIGINAL_NO_PADDING = 3;
const BASE64_VARIANT_URLSAFE = 5;
const BASE64_VARIANT_URLSAFE_NO_PADDING = 7;
const CRYPTO_AEAD_AES256GCM_KEYBYTES = 32;
const CRYPTO_AEAD_AES256GCM_NSECBYTES = 0;
const CRYPTO_AEAD_AES256GCM_NPUBBYTES = 12;
const CRYPTO_AEAD_AES256GCM_ABYTES = 16;
const CRYPTO_AEAD_AEGIS128L_KEYBYTES = 16;
const CRYPTO_AEAD_AEGIS128L_NSECBYTES = 0;
const CRYPTO_AEAD_AEGIS128L_NPUBBYTES = 16;
const CRYPTO_AEAD_AEGIS128L_ABYTES = 32;
const CRYPTO_AEAD_AEGIS256_KEYBYTES = 32;
const CRYPTO_AEAD_AEGIS256_NSECBYTES = 0;
const CRYPTO_AEAD_AEGIS256_NPUBBYTES = 32;
const CRYPTO_AEAD_AEGIS256_ABYTES = 32;
const CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES = 32;
const CRYPTO_AEAD_CHACHA20POLY1305_NSECBYTES = 0;
const CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES = 8;
const CRYPTO_AEAD_CHACHA20POLY1305_ABYTES = 16;
const CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES = 32;
const CRYPTO_AEAD_CHACHA20POLY1305_IETF_NSECBYTES = 0;
const CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES = 12;
const CRYPTO_AEAD_CHACHA20POLY1305_IETF_ABYTES = 16;
const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES = 32;
const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NSECBYTES = 0;
const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES = 24;
const CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES = 16;
const CRYPTO_AUTH_BYTES = 32;
const CRYPTO_AUTH_KEYBYTES = 32;
const CRYPTO_BOX_SEALBYTES = 16;
const CRYPTO_BOX_SECRETKEYBYTES = 32;
const CRYPTO_BOX_PUBLICKEYBYTES = 32;
const CRYPTO_BOX_KEYPAIRBYTES = 64;
const CRYPTO_BOX_MACBYTES = 16;
const CRYPTO_BOX_NONCEBYTES = 24;
const CRYPTO_BOX_SEEDBYTES = 32;
const CRYPTO_CORE_RISTRETTO255_BYTES = 32;
const CRYPTO_CORE_RISTRETTO255_SCALARBYTES = 32;
const CRYPTO_CORE_RISTRETTO255_HASHBYTES = 64;
const CRYPTO_CORE_RISTRETTO255_NONREDUCEDSCALARBYTES = 64;
const CRYPTO_KDF_BYTES_MIN = 16;
const CRYPTO_KDF_BYTES_MAX = 64;
const CRYPTO_KDF_CONTEXTBYTES = 8;
const CRYPTO_KDF_KEYBYTES = 32;
const CRYPTO_KX_BYTES = 32;
const CRYPTO_KX_PRIMITIVE = 'x25519blake2b';
const CRYPTO_KX_SEEDBYTES = 32;
const CRYPTO_KX_KEYPAIRBYTES = 64;
const CRYPTO_KX_PUBLICKEYBYTES = 32;
const CRYPTO_KX_SECRETKEYBYTES = 32;
const CRYPTO_KX_SESSIONKEYBYTES = 32;
const CRYPTO_GENERICHASH_BYTES = 32;
const CRYPTO_GENERICHASH_BYTES_MIN = 16;
const CRYPTO_GENERICHASH_BYTES_MAX = 64;
const CRYPTO_GENERICHASH_KEYBYTES = 32;
const CRYPTO_GENERICHASH_KEYBYTES_MIN = 16;
const CRYPTO_GENERICHASH_KEYBYTES_MAX = 64;
const CRYPTO_PWHASH_SALTBYTES = 16;
const CRYPTO_PWHASH_STRPREFIX = '$argon2id$';
const CRYPTO_PWHASH_ALG_ARGON2I13 = 1;
const CRYPTO_PWHASH_ALG_ARGON2ID13 = 2;
const CRYPTO_PWHASH_MEMLIMIT_INTERACTIVE = 33554432;
const CRYPTO_PWHASH_OPSLIMIT_INTERACTIVE = 4;
const CRYPTO_PWHASH_MEMLIMIT_MODERATE = 134217728;
const CRYPTO_PWHASH_OPSLIMIT_MODERATE = 6;
const CRYPTO_PWHASH_MEMLIMIT_SENSITIVE = 536870912;
const CRYPTO_PWHASH_OPSLIMIT_SENSITIVE = 8;
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_SALTBYTES = 32;
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_STRPREFIX = '$7$';
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_OPSLIMIT_INTERACTIVE = 534288;
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_MEMLIMIT_INTERACTIVE = 16777216;
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_OPSLIMIT_SENSITIVE = 33554432;
const CRYPTO_PWHASH_SCRYPTSALSA208SHA256_MEMLIMIT_SENSITIVE = 1073741824;
const CRYPTO_SCALARMULT_BYTES = 32;
const CRYPTO_SCALARMULT_SCALARBYTES = 32;
const CRYPTO_SCALARMULT_RISTRETTO255_BYTES = 32;
const CRYPTO_SCALARMULT_RISTRETTO255_SCALARBYTES = 32;
const CRYPTO_SHORTHASH_BYTES = 8;
const CRYPTO_SHORTHASH_KEYBYTES = 16;
const CRYPTO_SECRETBOX_KEYBYTES = 32;
const CRYPTO_SECRETBOX_MACBYTES = 16;
const CRYPTO_SECRETBOX_NONCEBYTES = 24;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_ABYTES = 17;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES = 24;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_KEYBYTES = 32;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_PUSH = 0;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_PULL = 1;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_REKEY = 2;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_FINAL = 3;
const CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_MESSAGEBYTES_MAX = 0x3fffffff80;
const CRYPTO_SIGN_BYTES = 64;
const CRYPTO_SIGN_SEEDBYTES = 32;
const CRYPTO_SIGN_PUBLICKEYBYTES = 32;
const CRYPTO_SIGN_SECRETKEYBYTES = 64;
const CRYPTO_SIGN_KEYPAIRBYTES = 96;
const CRYPTO_STREAM_KEYBYTES = 32;
const CRYPTO_STREAM_NONCEBYTES = 24;
const CRYPTO_STREAM_XCHACHA20_KEYBYTES = 32;
const CRYPTO_STREAM_XCHACHA20_NONCEBYTES = 24;
/**
* Add two numbers (little-endian unsigned), storing the value in the first
* parameter.
*
* This mutates $val.
*
* @param string $val
* @param string $addv
* @return void
* @throws SodiumException
*/
public static function add(
#[\SensitiveParameter]
&$val,
#[\SensitiveParameter]
$addv
) {
$val_len = ParagonIE_Sodium_Core_Util::strlen($val);
$addv_len = ParagonIE_Sodium_Core_Util::strlen($addv);
if ($val_len !== $addv_len) {
throw new SodiumException('values must have the same length');
}
$A = ParagonIE_Sodium_Core_Util::stringToIntArray($val);
$B = ParagonIE_Sodium_Core_Util::stringToIntArray($addv);
$c = 0;
for ($i = 0; $i < $val_len; $i++) {
$c += ($A[$i] + $B[$i]);
$A[$i] = ($c & 0xff);
$c >>= 8;
}
$val = ParagonIE_Sodium_Core_Util::intArrayToString($A);
}
/**
* @param string $encoded
* @param int $variant
* @param string $ignore
* @return string
* @throws SodiumException
*/
public static function base642bin(
#[\SensitiveParameter]
$encoded,
$variant,
$ignore = ''
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($encoded, 'string', 1);
/** @var string $encoded */
$encoded = (string) $encoded;
if (ParagonIE_Sodium_Core_Util::strlen($encoded) === 0) {
return '';
}
// Just strip before decoding
if (!empty($ignore)) {
$encoded = str_replace($ignore, '', $encoded);
}
try {
switch ($variant) {
case self::BASE64_VARIANT_ORIGINAL:
return ParagonIE_Sodium_Core_Base64_Original::decode($encoded, true);
case self::BASE64_VARIANT_ORIGINAL_NO_PADDING:
return ParagonIE_Sodium_Core_Base64_Original::decode($encoded, false);
case self::BASE64_VARIANT_URLSAFE:
return ParagonIE_Sodium_Core_Base64_UrlSafe::decode($encoded, true);
case self::BASE64_VARIANT_URLSAFE_NO_PADDING:
return ParagonIE_Sodium_Core_Base64_UrlSafe::decode($encoded, false);
default:
throw new SodiumException('invalid base64 variant identifier');
}
} catch (Exception $ex) {
if ($ex instanceof SodiumException) {
throw $ex;
}
throw new SodiumException('invalid base64 string');
}
}
/**
* @param string $decoded
* @param int $variant
* @return string
* @throws SodiumException
*/
public static function bin2base64(
#[\SensitiveParameter]
$decoded,
$variant
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($decoded, 'string', 1);
/** @var string $decoded */
$decoded = (string) $decoded;
if (ParagonIE_Sodium_Core_Util::strlen($decoded) === 0) {
return '';
}
switch ($variant) {
case self::BASE64_VARIANT_ORIGINAL:
return ParagonIE_Sodium_Core_Base64_Original::encode($decoded);
case self::BASE64_VARIANT_ORIGINAL_NO_PADDING:
return ParagonIE_Sodium_Core_Base64_Original::encodeUnpadded($decoded);
case self::BASE64_VARIANT_URLSAFE:
return ParagonIE_Sodium_Core_Base64_UrlSafe::encode($decoded);
case self::BASE64_VARIANT_URLSAFE_NO_PADDING:
return ParagonIE_Sodium_Core_Base64_UrlSafe::encodeUnpadded($decoded);
default:
throw new SodiumException('invalid base64 variant identifier');
}
}
/**
* Cache-timing-safe implementation of bin2hex().
*
* @param string $string A string (probably raw binary)
* @return string A hexadecimal-encoded string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function bin2hex(
#[\SensitiveParameter]
$string
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($string, 'string', 1);
if (self::useNewSodiumAPI()) {
return (string) sodium_bin2hex($string);
}
if (self::use_fallback('bin2hex')) {
return (string) call_user_func('\\Sodium\\bin2hex', $string);
}
return ParagonIE_Sodium_Core_Util::bin2hex($string);
}
/**
* Compare two strings, in constant-time.
* Compared to memcmp(), compare() is more useful for sorting.
*
* @param string $left The left operand; must be a string
* @param string $right The right operand; must be a string
* @return int If < 0 if the left operand is less than the right
* If = 0 if both strings are equal
* If > 0 if the right operand is less than the left
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function compare(
#[\SensitiveParameter]
$left,
#[\SensitiveParameter]
$right
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($left, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($right, 'string', 2);
if (self::useNewSodiumAPI()) {
return (int) sodium_compare($left, $right);
}
if (self::use_fallback('compare')) {
return (int) call_user_func('\\Sodium\\compare', $left, $right);
}
return ParagonIE_Sodium_Core_Util::compare($left, $right);
}
/**
* Authenticated Encryption with Associated Data: Decryption
*
* Algorithm:
* AEGIS-128L
*
* @param string $ciphertext Encrypted message (with MAC appended)
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 32 bytes
* @param string $key Encryption key
*
* @return string The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_aead_aegis128l_decrypt(
$ciphertext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = ''
) {
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AEGIS128L_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_AEGIS_128L_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AEGIS128L_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_AEGIS128L_KEYBYTES long');
}
$ct_length = ParagonIE_Sodium_Core_Util::strlen($ciphertext);
if ($ct_length < self::CRYPTO_AEAD_AEGIS128L_ABYTES) {
throw new SodiumException('Message must be at least CRYPTO_AEAD_AEGIS128L_ABYTES long');
}
$ct = ParagonIE_Sodium_Core_Util::substr(
$ciphertext,
0,
$ct_length - self::CRYPTO_AEAD_AEGIS128L_ABYTES
);
$tag = ParagonIE_Sodium_Core_Util::substr(
$ciphertext,
$ct_length - self::CRYPTO_AEAD_AEGIS128L_ABYTES,
self::CRYPTO_AEAD_AEGIS128L_ABYTES
);
return ParagonIE_Sodium_Core_AEGIS128L::decrypt($ct, $tag, $assocData, $key, $nonce);
}
/**
* Authenticated Encryption with Associated Data: Encryption
*
* Algorithm:
* AEGIS-128L
*
* @param string $plaintext Message to be encrypted
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 32 bytes
* @param string $key Encryption key
*
* @return string Ciphertext with 32-byte authentication tag appended
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_aegis128l_encrypt(
#[\SensitiveParameter]
$plaintext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = ''
) {
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AEGIS128L_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_AEGIS128L_KEYBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AEGIS128L_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_AEGIS128L_KEYBYTES long');
}
list($ct, $tag) = ParagonIE_Sodium_Core_AEGIS128L::encrypt($plaintext, $assocData, $key, $nonce);
return $ct . $tag;
}
/**
* Return a secure random key for use with the AEGIS-128L
* symmetric AEAD interface.
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_aead_aegis128l_keygen()
{
return random_bytes(self::CRYPTO_AEAD_AEGIS128L_KEYBYTES);
}
/**
* Authenticated Encryption with Associated Data: Decryption
*
* Algorithm:
* AEGIS-256
*
* @param string $ciphertext Encrypted message (with MAC appended)
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 32 bytes
* @param string $key Encryption key
*
* @return string The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_aead_aegis256_decrypt(
$ciphertext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = ''
) {
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AEGIS256_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_AEGIS256_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AEGIS256_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_AEGIS256_KEYBYTES long');
}
$ct_length = ParagonIE_Sodium_Core_Util::strlen($ciphertext);
if ($ct_length < self::CRYPTO_AEAD_AEGIS256_ABYTES) {
throw new SodiumException('Message must be at least CRYPTO_AEAD_AEGIS256_ABYTES long');
}
$ct = ParagonIE_Sodium_Core_Util::substr(
$ciphertext,
0,
$ct_length - self::CRYPTO_AEAD_AEGIS256_ABYTES
);
$tag = ParagonIE_Sodium_Core_Util::substr(
$ciphertext,
$ct_length - self::CRYPTO_AEAD_AEGIS256_ABYTES,
self::CRYPTO_AEAD_AEGIS256_ABYTES
);
return ParagonIE_Sodium_Core_AEGIS256::decrypt($ct, $tag, $assocData, $key, $nonce);
}
/**
* Authenticated Encryption with Associated Data: Encryption
*
* Algorithm:
* AEGIS-256
*
* @param string $plaintext Message to be encrypted
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 32 bytes
* @param string $key Encryption key
*
* @return string Ciphertext with 32-byte authentication tag appended
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_aegis256_encrypt(
#[\SensitiveParameter]
$plaintext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = ''
) {
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AEGIS256_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_AEGIS128L_KEYBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AEGIS256_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_AEGIS128L_KEYBYTES long');
}
list($ct, $tag) = ParagonIE_Sodium_Core_AEGIS256::encrypt($plaintext, $assocData, $key, $nonce);
return $ct . $tag;
}
/**
* Return a secure random key for use with the AEGIS-256
* symmetric AEAD interface.
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_aead_aegis256_keygen()
{
return random_bytes(self::CRYPTO_AEAD_AEGIS256_KEYBYTES);
}
/**
* Is AES-256-GCM even available to use?
*
* @return bool
* @psalm-suppress UndefinedFunction
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_aead_aes256gcm_is_available()
{
if (self::useNewSodiumAPI()) {
return sodium_crypto_aead_aes256gcm_is_available();
}
if (self::use_fallback('crypto_aead_aes256gcm_is_available')) {
return call_user_func('\\Sodium\\crypto_aead_aes256gcm_is_available');
}
if (PHP_VERSION_ID < 70100) {
// OpenSSL doesn't support AEAD before 7.1.0
return false;
}
if (!is_callable('openssl_encrypt') || !is_callable('openssl_decrypt')) {
// OpenSSL isn't installed
return false;
}
return (bool) in_array('aes-256-gcm', openssl_get_cipher_methods());
}
/**
* Authenticated Encryption with Associated Data: Decryption
*
* Algorithm:
* AES-256-GCM
*
* This mode uses a 64-bit random nonce with a 64-bit counter.
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
*
* @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
*
* @return string|bool The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_aead_aes256gcm_decrypt(
$ciphertext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = ''
) {
if (!self::crypto_aead_aes256gcm_is_available()) {
throw new SodiumException('AES-256-GCM is not available');
}
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AES256GCM_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_AES256GCM_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AES256GCM_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_AES256GCM_KEYBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_AES256GCM_ABYTES) {
throw new SodiumException('Message must be at least CRYPTO_AEAD_AES256GCM_ABYTES long');
}
if (!is_callable('openssl_decrypt')) {
throw new SodiumException('The OpenSSL extension is not installed, or openssl_decrypt() is not available');
}
/** @var string $ctext */
$ctext = ParagonIE_Sodium_Core_Util::substr($ciphertext, 0, -self::CRYPTO_AEAD_AES256GCM_ABYTES);
/** @var string $authTag */
$authTag = ParagonIE_Sodium_Core_Util::substr($ciphertext, -self::CRYPTO_AEAD_AES256GCM_ABYTES, 16);
return openssl_decrypt(
$ctext,
'aes-256-gcm',
$key,
OPENSSL_RAW_DATA,
$nonce,
$authTag,
$assocData
);
}
/**
* Authenticated Encryption with Associated Data: Encryption
*
* Algorithm:
* AES-256-GCM
*
* @param string $plaintext Message to be encrypted
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
*
* @return string Ciphertext with a 16-byte GCM message
* authentication code appended
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_aes256gcm_encrypt(
#[\SensitiveParameter]
$plaintext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = ''
) {
if (!self::crypto_aead_aes256gcm_is_available()) {
throw new SodiumException('AES-256-GCM is not available');
}
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_AES256GCM_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_AES256GCM_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_AES256GCM_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_AES256GCM_KEYBYTES long');
}
if (!is_callable('openssl_encrypt')) {
throw new SodiumException('The OpenSSL extension is not installed, or openssl_encrypt() is not available');
}
$authTag = '';
$ciphertext = openssl_encrypt(
$plaintext,
'aes-256-gcm',
$key,
OPENSSL_RAW_DATA,
$nonce,
$authTag,
$assocData
);
return $ciphertext . $authTag;
}
/**
* Return a secure random key for use with the AES-256-GCM
* symmetric AEAD interface.
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_aead_aes256gcm_keygen()
{
return random_bytes(self::CRYPTO_AEAD_AES256GCM_KEYBYTES);
}
/**
* Authenticated Encryption with Associated Data: Decryption
*
* Algorithm:
* ChaCha20-Poly1305
*
* This mode uses a 64-bit random nonce with a 64-bit counter.
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
*
* @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
*
* @return string The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_aead_chacha20poly1305_decrypt(
$ciphertext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = ''
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_CHACHA20POLY1305_ABYTES) {
throw new SodiumException('Message must be at least CRYPTO_AEAD_CHACHA20POLY1305_ABYTES long');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_aead_chacha20poly1305_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
if (self::use_fallback('crypto_aead_chacha20poly1305_decrypt')) {
return call_user_func(
'\\Sodium\\crypto_aead_chacha20poly1305_decrypt',
$ciphertext,
$assocData,
$nonce,
$key
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
/**
* Authenticated Encryption with Associated Data
*
* Algorithm:
* ChaCha20-Poly1305
*
* This mode uses a 64-bit random nonce with a 64-bit counter.
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
*
* @param string $plaintext Message to be encrypted
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
*
* @return string Ciphertext with a 16-byte Poly1305 message
* authentication code appended
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_chacha20poly1305_encrypt(
#[\SensitiveParameter]
$plaintext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = ''
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_aead_chacha20poly1305_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
if (self::use_fallback('crypto_aead_chacha20poly1305_encrypt')) {
return (string) call_user_func(
'\\Sodium\\crypto_aead_chacha20poly1305_encrypt',
$plaintext,
$assocData,
$nonce,
$key
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
/**
* Authenticated Encryption with Associated Data: Decryption
*
* Algorithm:
* ChaCha20-Poly1305
*
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
* Regular mode uses a 64-bit random nonce with a 64-bit counter.
*
* @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 12 bytes
* @param string $key Encryption key
*
* @return string The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_aead_chacha20poly1305_ietf_decrypt(
$ciphertext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = ''
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_CHACHA20POLY1305_ABYTES) {
throw new SodiumException('Message must be at least CRYPTO_AEAD_CHACHA20POLY1305_ABYTES long');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_aead_chacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
if (self::use_fallback('crypto_aead_chacha20poly1305_ietf_decrypt')) {
return call_user_func(
'\\Sodium\\crypto_aead_chacha20poly1305_ietf_decrypt',
$ciphertext,
$assocData,
$nonce,
$key
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
/**
* Return a secure random key for use with the ChaCha20-Poly1305
* symmetric AEAD interface.
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_aead_chacha20poly1305_keygen()
{
return random_bytes(self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES);
}
/**
* Authenticated Encryption with Associated Data
*
* Algorithm:
* ChaCha20-Poly1305
*
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
* Regular mode uses a 64-bit random nonce with a 64-bit counter.
*
* @param string $plaintext Message to be encrypted
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
*
* @return string Ciphertext with a 16-byte Poly1305 message
* authentication code appended
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_chacha20poly1305_ietf_encrypt(
#[\SensitiveParameter]
$plaintext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = ''
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
if (!is_null($assocData)) {
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
}
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES long');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_aead_chacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
if (self::use_fallback('crypto_aead_chacha20poly1305_ietf_encrypt')) {
return (string) call_user_func(
'\\Sodium\\crypto_aead_chacha20poly1305_ietf_encrypt',
$plaintext,
$assocData,
$nonce,
$key
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
/**
* Return a secure random key for use with the ChaCha20-Poly1305
* symmetric AEAD interface. (IETF version)
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_aead_chacha20poly1305_ietf_keygen()
{
return random_bytes(self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES);
}
/**
* Authenticated Encryption with Associated Data: Decryption
*
* Algorithm:
* XChaCha20-Poly1305
*
* This mode uses a 64-bit random nonce with a 64-bit counter.
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
*
* @param string $ciphertext Encrypted message (with Poly1305 MAC appended)
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
* @param bool $dontFallback Don't fallback to ext/sodium
*
* @return string|bool The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_xchacha20poly1305_ietf_decrypt(
$ciphertext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = '',
$dontFallback = false
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
if (!is_null($assocData)) {
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
} else {
$assocData = '';
}
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES) {
throw new SodiumException('Message must be at least CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES long');
}
if (self::useNewSodiumAPI() && !$dontFallback) {
if (is_callable('sodium_crypto_aead_xchacha20poly1305_ietf_decrypt')) {
return sodium_crypto_aead_xchacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_xchacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_xchacha20poly1305_ietf_decrypt(
$ciphertext,
$assocData,
$nonce,
$key
);
}
/**
* Authenticated Encryption with Associated Data
*
* Algorithm:
* XChaCha20-Poly1305
*
* This mode uses a 64-bit random nonce with a 64-bit counter.
* IETF mode uses a 96-bit random nonce with a 32-bit counter.
*
* @param string $plaintext Message to be encrypted
* @param string $assocData Authenticated Associated Data (unencrypted)
* @param string $nonce Number to be used only Once; must be 8 bytes
* @param string $key Encryption key
* @param bool $dontFallback Don't fallback to ext/sodium
*
* @return string Ciphertext with a 16-byte Poly1305 message
* authentication code appended
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_aead_xchacha20poly1305_ietf_encrypt(
#[\SensitiveParameter]
$plaintext = '',
$assocData = '',
$nonce = '',
#[\SensitiveParameter]
$key = '',
$dontFallback = false
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
if (!is_null($assocData)) {
ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);
} else {
$assocData = '';
}
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES) {
throw new SodiumException('Nonce must be CRYPTO_AEAD_XCHACHA20POLY1305_NPUBBYTES long');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES) {
throw new SodiumException('Key must be CRYPTO_AEAD_XCHACHA20POLY1305_KEYBYTES long');
}
if (self::useNewSodiumAPI() && !$dontFallback) {
if (is_callable('sodium_crypto_aead_xchacha20poly1305_ietf_encrypt')) {
return sodium_crypto_aead_xchacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::aead_xchacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
return ParagonIE_Sodium_Crypto::aead_xchacha20poly1305_ietf_encrypt(
$plaintext,
$assocData,
$nonce,
$key
);
}
/**
* Return a secure random key for use with the XChaCha20-Poly1305
* symmetric AEAD interface.
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_aead_xchacha20poly1305_ietf_keygen()
{
return random_bytes(self::CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES);
}
/**
* Authenticate a message. Uses symmetric-key cryptography.
*
* Algorithm:
* HMAC-SHA512-256. Which is HMAC-SHA-512 truncated to 256 bits.
* Not to be confused with HMAC-SHA-512/256 which would use the
* SHA-512/256 hash function (uses different initial parameters
* but still truncates to 256 bits to sidestep length-extension
* attacks).
*
* @param string $message Message to be authenticated
* @param string $key Symmetric authentication key
* @return string Message authentication code
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_auth(
$message,
#[\SensitiveParameter]
$key
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AUTH_KEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_AUTH_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_auth($message, $key);
}
if (self::use_fallback('crypto_auth')) {
return (string) call_user_func('\\Sodium\\crypto_auth', $message, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::auth($message, $key);
}
return ParagonIE_Sodium_Crypto::auth($message, $key);
}
/**
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_auth_keygen()
{
return random_bytes(self::CRYPTO_AUTH_KEYBYTES);
}
/**
* Verify the MAC of a message previously authenticated with crypto_auth.
*
* @param string $mac Message authentication code
* @param string $message Message whose authenticity you are attempting to
* verify (with a given MAC and key)
* @param string $key Symmetric authentication key
* @return bool TRUE if authenticated, FALSE otherwise
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_auth_verify(
$mac,
$message,
#[\SensitiveParameter]
$key
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($mac, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($mac) !== self::CRYPTO_AUTH_BYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_AUTH_BYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AUTH_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_AUTH_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (bool) sodium_crypto_auth_verify($mac, $message, $key);
}
if (self::use_fallback('crypto_auth_verify')) {
return (bool) call_user_func('\\Sodium\\crypto_auth_verify', $mac, $message, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::auth_verify($mac, $message, $key);
}
return ParagonIE_Sodium_Crypto::auth_verify($mac, $message, $key);
}
/**
* Authenticated asymmetric-key encryption. Both the sender and recipient
* may decrypt messages.
*
* Algorithm: X25519-XSalsa20-Poly1305.
* X25519: Elliptic-Curve Diffie Hellman over Curve25519.
* XSalsa20: Extended-nonce variant of salsa20.
* Poyl1305: Polynomial MAC for one-time message authentication.
*
* @param string $plaintext The message to be encrypted
* @param string $nonce A Number to only be used Once; must be 24 bytes
* @param string $keypair Your secret key and your recipient's public key
* @return string Ciphertext with 16-byte Poly1305 MAC
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box(
$plaintext,
$nonce,
#[\SensitiveParameter]
$keypair
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_BOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box($plaintext, $nonce, $keypair);
}
if (self::use_fallback('crypto_box')) {
return (string) call_user_func('\\Sodium\\crypto_box', $plaintext, $nonce, $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box($plaintext, $nonce, $keypair);
}
return ParagonIE_Sodium_Crypto::box($plaintext, $nonce, $keypair);
}
/**
* Anonymous public-key encryption. Only the recipient may decrypt messages.
*
* Algorithm: X25519-XSalsa20-Poly1305, as with crypto_box.
* The sender's X25519 keypair is ephemeral.
* Nonce is generated from the BLAKE2b hash of both public keys.
*
* This provides ciphertext integrity.
*
* @param string $plaintext Message to be sealed
* @param string $publicKey Your recipient's public key
* @return string Sealed message that only your recipient can
* decrypt
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_seal(
#[\SensitiveParameter]
$plaintext,
$publicKey
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_seal($plaintext, $publicKey);
}
if (self::use_fallback('crypto_box_seal')) {
return (string) call_user_func('\\Sodium\\crypto_box_seal', $plaintext, $publicKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_seal($plaintext, $publicKey);
}
return ParagonIE_Sodium_Crypto::box_seal($plaintext, $publicKey);
}
/**
* Opens a message encrypted with crypto_box_seal(). Requires
* the recipient's keypair (sk || pk) to decrypt successfully.
*
* This validates ciphertext integrity.
*
* @param string $ciphertext Sealed message to be opened
* @param string $keypair Your crypto_box keypair
* @return string The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_box_seal_open(
$ciphertext,
#[\SensitiveParameter]
$keypair
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_box_seal_open($ciphertext, $keypair);
}
if (self::use_fallback('crypto_box_seal_open')) {
return call_user_func('\\Sodium\\crypto_box_seal_open', $ciphertext, $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_seal_open($ciphertext, $keypair);
}
return ParagonIE_Sodium_Crypto::box_seal_open($ciphertext, $keypair);
}
/**
* Generate a new random X25519 keypair.
*
* @return string A 64-byte string; the first 32 are your secret key, while
* the last 32 are your public key. crypto_box_secretkey()
* and crypto_box_publickey() exist to separate them so you
* don't accidentally get them mixed up!
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_keypair()
{
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_keypair();
}
if (self::use_fallback('crypto_box_keypair')) {
return (string) call_user_func('\\Sodium\\crypto_box_keypair');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_keypair();
}
return ParagonIE_Sodium_Crypto::box_keypair();
}
/**
* Combine two keys into a keypair for use in library methods that expect
* a keypair. This doesn't necessarily have to be the same person's keys.
*
* @param string $secretKey Secret key
* @param string $publicKey Public key
* @return string Keypair
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_keypair_from_secretkey_and_publickey(
#[\SensitiveParameter]
$secretKey,
$publicKey
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_keypair_from_secretkey_and_publickey($secretKey, $publicKey);
}
if (self::use_fallback('crypto_box_keypair_from_secretkey_and_publickey')) {
return (string) call_user_func('\\Sodium\\crypto_box_keypair_from_secretkey_and_publickey', $secretKey, $publicKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_keypair_from_secretkey_and_publickey($secretKey, $publicKey);
}
return ParagonIE_Sodium_Crypto::box_keypair_from_secretkey_and_publickey($secretKey, $publicKey);
}
/**
* Decrypt a message previously encrypted with crypto_box().
*
* @param string $ciphertext Encrypted message
* @param string $nonce Number to only be used Once; must be 24 bytes
* @param string $keypair Your secret key and the sender's public key
* @return string The original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_box_open(
$ciphertext,
$nonce,
#[\SensitiveParameter]
$keypair
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_BOX_MACBYTES) {
throw new SodiumException('Argument 1 must be at least CRYPTO_BOX_MACBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_BOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_BOX_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_box_open($ciphertext, $nonce, $keypair);
}
if (self::use_fallback('crypto_box_open')) {
return call_user_func('\\Sodium\\crypto_box_open', $ciphertext, $nonce, $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_open($ciphertext, $nonce, $keypair);
}
return ParagonIE_Sodium_Crypto::box_open($ciphertext, $nonce, $keypair);
}
/**
* Extract the public key from a crypto_box keypair.
*
* @param string $keypair Keypair containing secret and public key
* @return string Your crypto_box public key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_publickey(
#[\SensitiveParameter]
$keypair
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_publickey($keypair);
}
if (self::use_fallback('crypto_box_publickey')) {
return (string) call_user_func('\\Sodium\\crypto_box_publickey', $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_publickey($keypair);
}
return ParagonIE_Sodium_Crypto::box_publickey($keypair);
}
/**
* Calculate the X25519 public key from a given X25519 secret key.
*
* @param string $secretKey Any X25519 secret key
* @return string The corresponding X25519 public key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_publickey_from_secretkey(
#[\SensitiveParameter]
$secretKey
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_publickey_from_secretkey($secretKey);
}
if (self::use_fallback('crypto_box_publickey_from_secretkey')) {
return (string) call_user_func('\\Sodium\\crypto_box_publickey_from_secretkey', $secretKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_publickey_from_secretkey($secretKey);
}
return ParagonIE_Sodium_Crypto::box_publickey_from_secretkey($secretKey);
}
/**
* Extract the secret key from a crypto_box keypair.
*
* @param string $keypair
* @return string Your crypto_box secret key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_box_secretkey(
#[\SensitiveParameter]
$keypair
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_secretkey($keypair);
}
if (self::use_fallback('crypto_box_secretkey')) {
return (string) call_user_func('\\Sodium\\crypto_box_secretkey', $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_secretkey($keypair);
}
return ParagonIE_Sodium_Crypto::box_secretkey($keypair);
}
/**
* Generate an X25519 keypair from a seed.
*
* @param string $seed
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress UndefinedFunction
*/
public static function crypto_box_seed_keypair(
#[\SensitiveParameter]
$seed
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1);
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_box_seed_keypair($seed);
}
if (self::use_fallback('crypto_box_seed_keypair')) {
return (string) call_user_func('\\Sodium\\crypto_box_seed_keypair', $seed);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::box_seed_keypair($seed);
}
return ParagonIE_Sodium_Crypto::box_seed_keypair($seed);
}
/**
* Calculates a BLAKE2b hash, with an optional key.
*
* @param string $message The message to be hashed
* @param string|null $key If specified, must be a string between 16
* and 64 bytes long
* @param int $length Output length in bytes; must be between 16
* and 64 (default = 32)
* @return string Raw binary
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_generichash(
$message,
#[\SensitiveParameter]
$key = '',
$length = self::CRYPTO_GENERICHASH_BYTES
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
if (is_null($key)) {
$key = '';
}
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 3);
/* Input validation: */
if (!empty($key)) {
if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.');
}
}
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_generichash($message, $key, $length);
}
if (self::use_fallback('crypto_generichash')) {
return (string) call_user_func('\\Sodium\\crypto_generichash', $message, $key, $length);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::generichash($message, $key, $length);
}
return ParagonIE_Sodium_Crypto::generichash($message, $key, $length);
}
/**
* Get the final BLAKE2b hash output for a given context.
*
* @param string $ctx BLAKE2 hashing context. Generated by crypto_generichash_init().
* @param int $length Hash output size.
* @return string Final BLAKE2b hash.
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress ReferenceConstraintViolation
* @psalm-suppress ConflictingReferenceConstraint
*/
public static function crypto_generichash_final(
#[\SensitiveParameter]
&$ctx,
$length = self::CRYPTO_GENERICHASH_BYTES
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ctx, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2);
if (self::useNewSodiumAPI()) {
return sodium_crypto_generichash_final($ctx, $length);
}
if (self::use_fallback('crypto_generichash_final')) {
$func = '\\Sodium\\crypto_generichash_final';
return (string) $func($ctx, $length);
}
if ($length < 1) {
try {
self::memzero($ctx);
} catch (SodiumException $ex) {
unset($ctx);
}
return '';
}
if (PHP_INT_SIZE === 4) {
$result = ParagonIE_Sodium_Crypto32::generichash_final($ctx, $length);
} else {
$result = ParagonIE_Sodium_Crypto::generichash_final($ctx, $length);
}
try {
self::memzero($ctx);
} catch (SodiumException $ex) {
unset($ctx);
}
return $result;
}
/**
* Initialize a BLAKE2b hashing context, for use in a streaming interface.
*
* @param string|null $key If specified must be a string between 16 and 64 bytes
* @param int $length The size of the desired hash output
* @return string A BLAKE2 hashing context, encoded as a string
* (To be 100% compatible with ext/libsodium)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_generichash_init(
#[\SensitiveParameter]
$key = '',
$length = self::CRYPTO_GENERICHASH_BYTES
) {
/* Type checks: */
if (is_null($key)) {
$key = '';
}
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2);
/* Input validation: */
if (!empty($key)) {
if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.');
}
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_generichash_init($key, $length);
}
if (self::use_fallback('crypto_generichash_init')) {
return (string) call_user_func('\\Sodium\\crypto_generichash_init', $key, $length);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::generichash_init($key, $length);
}
return ParagonIE_Sodium_Crypto::generichash_init($key, $length);
}
/**
* Initialize a BLAKE2b hashing context, for use in a streaming interface.
*
* @param string|null $key If specified must be a string between 16 and 64 bytes
* @param int $length The size of the desired hash output
* @param string $salt Salt (up to 16 bytes)
* @param string $personal Personalization string (up to 16 bytes)
* @return string A BLAKE2 hashing context, encoded as a string
* (To be 100% compatible with ext/libsodium)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_generichash_init_salt_personal(
#[\SensitiveParameter]
$key = '',
$length = self::CRYPTO_GENERICHASH_BYTES,
$salt = '',
$personal = ''
) {
/* Type checks: */
if (is_null($key)) {
$key = '';
}
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($length, 'int', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($personal, 'string', 4);
$salt = str_pad($salt, 16, "\0", STR_PAD_RIGHT);
$personal = str_pad($personal, 16, "\0", STR_PAD_RIGHT);
/* Input validation: */
if (!empty($key)) {
/*
if (ParagonIE_Sodium_Core_Util::strlen($key) < self::CRYPTO_GENERICHASH_KEYBYTES_MIN) {
throw new SodiumException('Unsupported key size. Must be at least CRYPTO_GENERICHASH_KEYBYTES_MIN bytes long.');
}
*/
if (ParagonIE_Sodium_Core_Util::strlen($key) > self::CRYPTO_GENERICHASH_KEYBYTES_MAX) {
throw new SodiumException('Unsupported key size. Must be at most CRYPTO_GENERICHASH_KEYBYTES_MAX bytes long.');
}
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::generichash_init_salt_personal($key, $length, $salt, $personal);
}
return ParagonIE_Sodium_Crypto::generichash_init_salt_personal($key, $length, $salt, $personal);
}
/**
* Update a BLAKE2b hashing context with additional data.
*
* @param string $ctx BLAKE2 hashing context. Generated by crypto_generichash_init().
* $ctx is passed by reference and gets updated in-place.
* @param-out string $ctx
* @param string $message The message to append to the existing hash state.
* @return void
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress ReferenceConstraintViolation
*/
public static function crypto_generichash_update(
#[\SensitiveParameter]
&$ctx,
$message
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ctx, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2);
if (self::useNewSodiumAPI()) {
sodium_crypto_generichash_update($ctx, $message);
return;
}
if (self::use_fallback('crypto_generichash_update')) {
$func = '\\Sodium\\crypto_generichash_update';
$func($ctx, $message);
return;
}
if (PHP_INT_SIZE === 4) {
$ctx = ParagonIE_Sodium_Crypto32::generichash_update($ctx, $message);
} else {
$ctx = ParagonIE_Sodium_Crypto::generichash_update($ctx, $message);
}
}
/**
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_generichash_keygen()
{
return random_bytes(self::CRYPTO_GENERICHASH_KEYBYTES);
}
/**
* @param int $subkey_len
* @param int $subkey_id
* @param string $context
* @param string $key
* @return string
* @throws SodiumException
*/
public static function crypto_kdf_derive_from_key(
$subkey_len,
$subkey_id,
$context,
#[\SensitiveParameter]
$key
) {
ParagonIE_Sodium_Core_Util::declareScalarType($subkey_len, 'int', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($subkey_id, 'int', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($context, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
$subkey_id = (int) $subkey_id;
$subkey_len = (int) $subkey_len;
$context = (string) $context;
$key = (string) $key;
if ($subkey_len < self::CRYPTO_KDF_BYTES_MIN) {
throw new SodiumException('subkey cannot be smaller than SODIUM_CRYPTO_KDF_BYTES_MIN');
}
if ($subkey_len > self::CRYPTO_KDF_BYTES_MAX) {
throw new SodiumException('subkey cannot be larger than SODIUM_CRYPTO_KDF_BYTES_MAX');
}
if ($subkey_id < 0) {
throw new SodiumException('subkey_id cannot be negative');
}
if (ParagonIE_Sodium_Core_Util::strlen($context) !== self::CRYPTO_KDF_CONTEXTBYTES) {
throw new SodiumException('context should be SODIUM_CRYPTO_KDF_CONTEXTBYTES bytes');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_KDF_KEYBYTES) {
throw new SodiumException('key should be SODIUM_CRYPTO_KDF_KEYBYTES bytes');
}
$salt = ParagonIE_Sodium_Core_Util::store64_le($subkey_id);
$state = self::crypto_generichash_init_salt_personal(
$key,
$subkey_len,
$salt,
$context
);
return self::crypto_generichash_final($state, $subkey_len);
}
/**
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_kdf_keygen()
{
return random_bytes(self::CRYPTO_KDF_KEYBYTES);
}
/**
* Perform a key exchange, between a designated client and a server.
*
* Typically, you would designate one machine to be the client and the
* other to be the server. The first two keys are what you'd expect for
* scalarmult() below, but the latter two public keys don't swap places.
*
* | ALICE | BOB |
* | Client | Server |
* |--------------------------------|-------------------------------------|
* | shared = crypto_kx( | shared = crypto_kx( |
* | alice_sk, | bob_sk, | <- contextual
* | bob_pk, | alice_pk, | <- contextual
* | alice_pk, | alice_pk, | <----- static
* | bob_pk | bob_pk | <----- static
* | ) | ) |
*
* They are used along with the scalarmult product to generate a 256-bit
* BLAKE2b hash unique to the client and server keys.
*
* @param string $my_secret
* @param string $their_public
* @param string $client_public
* @param string $server_public
* @param bool $dontFallback
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_kx(
#[\SensitiveParameter]
$my_secret,
$their_public,
$client_public,
$server_public,
$dontFallback = false
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($my_secret, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($their_public, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($client_public, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($server_public, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($my_secret) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($their_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($client_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($server_public) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 4 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI() && !$dontFallback) {
if (is_callable('sodium_crypto_kx')) {
return (string) sodium_crypto_kx(
$my_secret,
$their_public,
$client_public,
$server_public
);
}
}
if (self::use_fallback('crypto_kx')) {
return (string) call_user_func(
'\\Sodium\\crypto_kx',
$my_secret,
$their_public,
$client_public,
$server_public
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::keyExchange(
$my_secret,
$their_public,
$client_public,
$server_public
);
}
return ParagonIE_Sodium_Crypto::keyExchange(
$my_secret,
$their_public,
$client_public,
$server_public
);
}
/**
* @param string $seed
* @return string
* @throws SodiumException
*/
public static function crypto_kx_seed_keypair(
#[\SensitiveParameter]
$seed
) {
ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1);
$seed = (string) $seed;
if (ParagonIE_Sodium_Core_Util::strlen($seed) !== self::CRYPTO_KX_SEEDBYTES) {
throw new SodiumException('seed must be SODIUM_CRYPTO_KX_SEEDBYTES bytes');
}
$sk = self::crypto_generichash($seed, '', self::CRYPTO_KX_SECRETKEYBYTES);
$pk = self::crypto_scalarmult_base($sk);
return $sk . $pk;
}
/**
* @return string
* @throws Exception
*/
public static function crypto_kx_keypair()
{
$sk = self::randombytes_buf(self::CRYPTO_KX_SECRETKEYBYTES);
$pk = self::crypto_scalarmult_base($sk);
return $sk . $pk;
}
/**
* @param string $keypair
* @param string $serverPublicKey
* @return array{0: string, 1: string}
* @throws SodiumException
*/
public static function crypto_kx_client_session_keys(
#[\SensitiveParameter]
$keypair,
$serverPublicKey
) {
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($serverPublicKey, 'string', 2);
$keypair = (string) $keypair;
$serverPublicKey = (string) $serverPublicKey;
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_KX_KEYPAIRBYTES) {
throw new SodiumException('keypair should be SODIUM_CRYPTO_KX_KEYPAIRBYTES bytes');
}
if (ParagonIE_Sodium_Core_Util::strlen($serverPublicKey) !== self::CRYPTO_KX_PUBLICKEYBYTES) {
throw new SodiumException('public keys must be SODIUM_CRYPTO_KX_PUBLICKEYBYTES bytes');
}
$sk = self::crypto_kx_secretkey($keypair);
$pk = self::crypto_kx_publickey($keypair);
$h = self::crypto_generichash_init(null, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
self::crypto_generichash_update($h, self::crypto_scalarmult($sk, $serverPublicKey));
self::crypto_generichash_update($h, $pk);
self::crypto_generichash_update($h, $serverPublicKey);
$sessionKeys = self::crypto_generichash_final($h, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
return array(
ParagonIE_Sodium_Core_Util::substr(
$sessionKeys,
0,
self::CRYPTO_KX_SESSIONKEYBYTES
),
ParagonIE_Sodium_Core_Util::substr(
$sessionKeys,
self::CRYPTO_KX_SESSIONKEYBYTES,
self::CRYPTO_KX_SESSIONKEYBYTES
)
);
}
/**
* @param string $keypair
* @param string $clientPublicKey
* @return array{0: string, 1: string}
* @throws SodiumException
*/
public static function crypto_kx_server_session_keys(
#[\SensitiveParameter]
$keypair,
$clientPublicKey
) {
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($clientPublicKey, 'string', 2);
$keypair = (string) $keypair;
$clientPublicKey = (string) $clientPublicKey;
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_KX_KEYPAIRBYTES) {
throw new SodiumException('keypair should be SODIUM_CRYPTO_KX_KEYPAIRBYTES bytes');
}
if (ParagonIE_Sodium_Core_Util::strlen($clientPublicKey) !== self::CRYPTO_KX_PUBLICKEYBYTES) {
throw new SodiumException('public keys must be SODIUM_CRYPTO_KX_PUBLICKEYBYTES bytes');
}
$sk = self::crypto_kx_secretkey($keypair);
$pk = self::crypto_kx_publickey($keypair);
$h = self::crypto_generichash_init(null, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
self::crypto_generichash_update($h, self::crypto_scalarmult($sk, $clientPublicKey));
self::crypto_generichash_update($h, $clientPublicKey);
self::crypto_generichash_update($h, $pk);
$sessionKeys = self::crypto_generichash_final($h, self::CRYPTO_KX_SESSIONKEYBYTES * 2);
return array(
ParagonIE_Sodium_Core_Util::substr(
$sessionKeys,
self::CRYPTO_KX_SESSIONKEYBYTES,
self::CRYPTO_KX_SESSIONKEYBYTES
),
ParagonIE_Sodium_Core_Util::substr(
$sessionKeys,
0,
self::CRYPTO_KX_SESSIONKEYBYTES
)
);
}
/**
* @param string $kp
* @return string
* @throws SodiumException
*/
public static function crypto_kx_secretkey(
#[\SensitiveParameter]
$kp
) {
return ParagonIE_Sodium_Core_Util::substr(
$kp,
0,
self::CRYPTO_KX_SECRETKEYBYTES
);
}
/**
* @param string $kp
* @return string
* @throws SodiumException
*/
public static function crypto_kx_publickey($kp)
{
return ParagonIE_Sodium_Core_Util::substr(
$kp,
self::CRYPTO_KX_SECRETKEYBYTES,
self::CRYPTO_KX_PUBLICKEYBYTES
);
}
/**
* @param int $outlen
* @param string $passwd
* @param string $salt
* @param int $opslimit
* @param int $memlimit
* @param int|null $alg
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_pwhash(
$outlen,
#[\SensitiveParameter]
$passwd,
$salt,
$opslimit,
$memlimit,
$alg = null
) {
ParagonIE_Sodium_Core_Util::declareScalarType($outlen, 'int', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 4);
ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 5);
if (self::useNewSodiumAPI()) {
if (!is_null($alg)) {
ParagonIE_Sodium_Core_Util::declareScalarType($alg, 'int', 6);
return sodium_crypto_pwhash($outlen, $passwd, $salt, $opslimit, $memlimit, $alg);
}
return sodium_crypto_pwhash($outlen, $passwd, $salt, $opslimit, $memlimit);
}
if (self::use_fallback('crypto_pwhash')) {
return (string) call_user_func('\\Sodium\\crypto_pwhash', $outlen, $passwd, $salt, $opslimit, $memlimit);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP'
);
}
/**
* !Exclusive to sodium_compat!
*
* This returns TRUE if the native crypto_pwhash API is available by libsodium.
* This returns FALSE if only sodium_compat is available.
*
* @return bool
*/
public static function crypto_pwhash_is_available()
{
if (self::useNewSodiumAPI()) {
return true;
}
if (self::use_fallback('crypto_pwhash')) {
return true;
}
return false;
}
/**
* @param string $passwd
* @param int $opslimit
* @param int $memlimit
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_pwhash_str(
#[\SensitiveParameter]
$passwd,
$opslimit,
$memlimit
) {
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3);
if (self::useNewSodiumAPI()) {
return sodium_crypto_pwhash_str($passwd, $opslimit, $memlimit);
}
if (self::use_fallback('crypto_pwhash_str')) {
return (string) call_user_func('\\Sodium\\crypto_pwhash_str', $passwd, $opslimit, $memlimit);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP'
);
}
/**
* Do we need to rehash this password?
*
* @param string $hash
* @param int $opslimit
* @param int $memlimit
* @return bool
* @throws SodiumException
*/
public static function crypto_pwhash_str_needs_rehash(
#[\SensitiveParameter]
$hash,
$opslimit,
$memlimit
) {
ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3);
// Just grab the first 4 pieces.
$pieces = explode('$', (string) $hash);
$prefix = implode('$', array_slice($pieces, 0, 4));
// Rebuild the expected header.
/** @var int $ops */
$ops = (int) $opslimit;
/** @var int $mem */
$mem = (int) $memlimit >> 10;
$encoded = self::CRYPTO_PWHASH_STRPREFIX . 'v=19$m=' . $mem . ',t=' . $ops . ',p=1';
// Do they match? If so, we don't need to rehash, so return false.
return !ParagonIE_Sodium_Core_Util::hashEquals($encoded, $prefix);
}
/**
* @param string $passwd
* @param string $hash
* @return bool
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_pwhash_str_verify(
#[\SensitiveParameter]
$passwd,
#[\SensitiveParameter]
$hash
) {
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 2);
if (self::useNewSodiumAPI()) {
return (bool) sodium_crypto_pwhash_str_verify($passwd, $hash);
}
if (self::use_fallback('crypto_pwhash_str_verify')) {
return (bool) call_user_func('\\Sodium\\crypto_pwhash_str_verify', $passwd, $hash);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Argon2i with acceptable performance in pure-PHP'
);
}
/**
* @param int $outlen
* @param string $passwd
* @param string $salt
* @param int $opslimit
* @param int $memlimit
* @return string
* @throws SodiumException
* @throws TypeError
*/
public static function crypto_pwhash_scryptsalsa208sha256(
$outlen,
#[\SensitiveParameter]
$passwd,
$salt,
$opslimit,
$memlimit
) {
ParagonIE_Sodium_Core_Util::declareScalarType($outlen, 'int', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($salt, 'string', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 4);
ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 5);
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_pwhash_scryptsalsa208sha256(
(int) $outlen,
(string) $passwd,
(string) $salt,
(int) $opslimit,
(int) $memlimit
);
}
if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256')) {
return (string) call_user_func(
'\\Sodium\\crypto_pwhash_scryptsalsa208sha256',
(int) $outlen,
(string) $passwd,
(string) $salt,
(int) $opslimit,
(int) $memlimit
);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP'
);
}
/**
* !Exclusive to sodium_compat!
*
* This returns TRUE if the native crypto_pwhash API is available by libsodium.
* This returns FALSE if only sodium_compat is available.
*
* @return bool
*/
public static function crypto_pwhash_scryptsalsa208sha256_is_available()
{
if (self::useNewSodiumAPI()) {
return true;
}
if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256')) {
return true;
}
return false;
}
/**
* @param string $passwd
* @param int $opslimit
* @param int $memlimit
* @return string
* @throws SodiumException
* @throws TypeError
*/
public static function crypto_pwhash_scryptsalsa208sha256_str(
#[\SensitiveParameter]
$passwd,
$opslimit,
$memlimit
) {
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3);
if (self::useNewSodiumAPI()) {
return (string) sodium_crypto_pwhash_scryptsalsa208sha256_str(
(string) $passwd,
(int) $opslimit,
(int) $memlimit
);
}
if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256_str')) {
return (string) call_user_func(
'\\Sodium\\crypto_pwhash_scryptsalsa208sha256_str',
(string) $passwd,
(int) $opslimit,
(int) $memlimit
);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP'
);
}
/**
* @param string $passwd
* @param string $hash
* @return bool
* @throws SodiumException
* @throws TypeError
*/
public static function crypto_pwhash_scryptsalsa208sha256_str_verify(
#[\SensitiveParameter]
$passwd,
#[\SensitiveParameter]
$hash
) {
ParagonIE_Sodium_Core_Util::declareScalarType($passwd, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 2);
if (self::useNewSodiumAPI()) {
return (bool) sodium_crypto_pwhash_scryptsalsa208sha256_str_verify(
(string) $passwd,
(string) $hash
);
}
if (self::use_fallback('crypto_pwhash_scryptsalsa208sha256_str_verify')) {
return (bool) call_user_func(
'\\Sodium\\crypto_pwhash_scryptsalsa208sha256_str_verify',
(string) $passwd,
(string) $hash
);
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented, as it is not possible to implement Scrypt with acceptable performance in pure-PHP'
);
}
/**
* Calculate the shared secret between your secret key and your
* recipient's public key.
*
* Algorithm: X25519 (ECDH over Curve25519)
*
* @param string $secretKey
* @param string $publicKey
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_scalarmult(
#[\SensitiveParameter]
$secretKey,
$publicKey
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_BOX_PUBLICKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_BOX_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_scalarmult($secretKey, $publicKey);
}
if (self::use_fallback('crypto_scalarmult')) {
return (string) call_user_func('\\Sodium\\crypto_scalarmult', $secretKey, $publicKey);
}
/* Output validation: Forbid all-zero keys */
if (ParagonIE_Sodium_Core_Util::hashEquals($secretKey, str_repeat("\0", self::CRYPTO_BOX_SECRETKEYBYTES))) {
throw new SodiumException('Zero secret key is not allowed');
}
if (ParagonIE_Sodium_Core_Util::hashEquals($publicKey, str_repeat("\0", self::CRYPTO_BOX_PUBLICKEYBYTES))) {
throw new SodiumException('Zero public key is not allowed');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::scalarmult($secretKey, $publicKey);
}
return ParagonIE_Sodium_Crypto::scalarmult($secretKey, $publicKey);
}
/**
* Calculate an X25519 public key from an X25519 secret key.
*
* @param string $secretKey
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress TooFewArguments
* @psalm-suppress MixedArgument
*/
public static function crypto_scalarmult_base(
#[\SensitiveParameter]
$secretKey
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_BOX_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_BOX_SECRETKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_scalarmult_base($secretKey);
}
if (self::use_fallback('crypto_scalarmult_base')) {
return (string) call_user_func('\\Sodium\\crypto_scalarmult_base', $secretKey);
}
if (ParagonIE_Sodium_Core_Util::hashEquals($secretKey, str_repeat("\0", self::CRYPTO_BOX_SECRETKEYBYTES))) {
throw new SodiumException('Zero secret key is not allowed');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::scalarmult_base($secretKey);
}
return ParagonIE_Sodium_Crypto::scalarmult_base($secretKey);
}
/**
* Authenticated symmetric-key encryption.
*
* Algorithm: XSalsa20-Poly1305
*
* @param string $plaintext The message you're encrypting
* @param string $nonce A Number to be used Once; must be 24 bytes
* @param string $key Symmetric encryption key
* @return string Ciphertext with Poly1305 MAC
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_secretbox(
#[\SensitiveParameter]
$plaintext,
$nonce,
#[\SensitiveParameter]
$key
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_secretbox($plaintext, $nonce, $key);
}
if (self::use_fallback('crypto_secretbox')) {
return (string) call_user_func('\\Sodium\\crypto_secretbox', $plaintext, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretbox($plaintext, $nonce, $key);
}
return ParagonIE_Sodium_Crypto::secretbox($plaintext, $nonce, $key);
}
/**
* Decrypts a message previously encrypted with crypto_secretbox().
*
* @param string $ciphertext Ciphertext with Poly1305 MAC
* @param string $nonce A Number to be used Once; must be 24 bytes
* @param string $key Symmetric encryption key
* @return string Original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_secretbox_open(
$ciphertext,
$nonce,
#[\SensitiveParameter]
$key
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_secretbox_open($ciphertext, $nonce, $key);
}
if (self::use_fallback('crypto_secretbox_open')) {
return call_user_func('\\Sodium\\crypto_secretbox_open', $ciphertext, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretbox_open($ciphertext, $nonce, $key);
}
return ParagonIE_Sodium_Crypto::secretbox_open($ciphertext, $nonce, $key);
}
/**
* Return a secure random key for use with crypto_secretbox
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_secretbox_keygen()
{
return random_bytes(self::CRYPTO_SECRETBOX_KEYBYTES);
}
/**
* Authenticated symmetric-key encryption.
*
* Algorithm: XChaCha20-Poly1305
*
* @param string $plaintext The message you're encrypting
* @param string $nonce A Number to be used Once; must be 24 bytes
* @param string $key Symmetric encryption key
* @return string Ciphertext with Poly1305 MAC
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_secretbox_xchacha20poly1305($plaintext, $nonce, $key)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($plaintext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretbox_xchacha20poly1305($plaintext, $nonce, $key);
}
return ParagonIE_Sodium_Crypto::secretbox_xchacha20poly1305($plaintext, $nonce, $key);
}
/**
* Decrypts a message previously encrypted with crypto_secretbox_xchacha20poly1305().
*
* @param string $ciphertext Ciphertext with Poly1305 MAC
* @param string $nonce A Number to be used Once; must be 24 bytes
* @param string $key Symmetric encryption key
* @return string Original plaintext message
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_secretbox_xchacha20poly1305_open(
$ciphertext,
$nonce,
#[\SensitiveParameter]
$key
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_SECRETBOX_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SECRETBOX_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key);
}
return ParagonIE_Sodium_Crypto::secretbox_xchacha20poly1305_open($ciphertext, $nonce, $key);
}
/**
* @param string $key
* @return array<int, string> Returns a state and a header.
* @throws Exception
* @throws SodiumException
*/
public static function crypto_secretstream_xchacha20poly1305_init_push(
#[\SensitiveParameter]
$key
) {
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_init_push($key);
}
return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_init_push($key);
}
/**
* @param string $header
* @param string $key
* @return string Returns a state.
* @throws Exception
*/
public static function crypto_secretstream_xchacha20poly1305_init_pull(
$header,
#[\SensitiveParameter]
$key
) {
if (ParagonIE_Sodium_Core_Util::strlen($header) < self::CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES) {
throw new SodiumException(
'header size should be SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES bytes'
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_init_pull($key, $header);
}
return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_init_pull($key, $header);
}
/**
* @param string $state
* @param string $msg
* @param string $aad
* @param int $tag
* @return string
* @throws SodiumException
*/
public static function crypto_secretstream_xchacha20poly1305_push(
#[\SensitiveParameter]
&$state,
#[\SensitiveParameter]
$msg,
$aad = '',
$tag = 0
) {
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_push(
$state,
$msg,
$aad,
$tag
);
}
return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_push(
$state,
$msg,
$aad,
$tag
);
}
/**
* @param string $state
* @param string $msg
* @param string $aad
* @return bool|array{0: string, 1: int}
* @throws SodiumException
*/
public static function crypto_secretstream_xchacha20poly1305_pull(
#[\SensitiveParameter]
&$state,
$msg,
$aad = ''
) {
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_pull(
$state,
$msg,
$aad
);
}
return ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_pull(
$state,
$msg,
$aad
);
}
/**
* @return string
* @throws Exception
*/
public static function crypto_secretstream_xchacha20poly1305_keygen()
{
return random_bytes(self::CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_KEYBYTES);
}
/**
* @param string $state
* @return void
* @throws SodiumException
*/
public static function crypto_secretstream_xchacha20poly1305_rekey(
#[\SensitiveParameter]
&$state
) {
if (PHP_INT_SIZE === 4) {
ParagonIE_Sodium_Crypto32::secretstream_xchacha20poly1305_rekey($state);
} else {
ParagonIE_Sodium_Crypto::secretstream_xchacha20poly1305_rekey($state);
}
}
/**
* Calculates a SipHash-2-4 hash of a message for a given key.
*
* @param string $message Input message
* @param string $key SipHash-2-4 key
* @return string Hash
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_shorthash(
$message,
#[\SensitiveParameter]
$key
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_SHORTHASH_KEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SHORTHASH_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_shorthash($message, $key);
}
if (self::use_fallback('crypto_shorthash')) {
return (string) call_user_func('\\Sodium\\crypto_shorthash', $message, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_SipHash::sipHash24($message, $key);
}
return ParagonIE_Sodium_Core_SipHash::sipHash24($message, $key);
}
/**
* Return a secure random key for use with crypto_shorthash
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_shorthash_keygen()
{
return random_bytes(self::CRYPTO_SHORTHASH_KEYBYTES);
}
/**
* Returns a signed message. You probably want crypto_sign_detached()
* instead, which only returns the signature.
*
* Algorithm: Ed25519 (EdDSA over Curve25519)
*
* @param string $message Message to be signed.
* @param string $secretKey Secret signing key.
* @return string Signed message (signature is prefixed).
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_sign(
$message,
#[\SensitiveParameter]
$secretKey
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign($message, $secretKey);
}
if (self::use_fallback('crypto_sign')) {
return (string) call_user_func('\\Sodium\\crypto_sign', $message, $secretKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::sign($message, $secretKey);
}
return ParagonIE_Sodium_Crypto::sign($message, $secretKey);
}
/**
* Validates a signed message then returns the message.
*
* @param string $signedMessage A signed message
* @param string $publicKey A public key
* @return string The original message (if the signature is
* valid for this public key)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress MixedReturnStatement
*/
public static function crypto_sign_open(
$signedMessage,
$publicKey
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($signedMessage, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($signedMessage) < self::CRYPTO_SIGN_BYTES) {
throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_BYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SIGN_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_sign_open($signedMessage, $publicKey);
}
if (self::use_fallback('crypto_sign_open')) {
return call_user_func('\\Sodium\\crypto_sign_open', $signedMessage, $publicKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::sign_open($signedMessage, $publicKey);
}
return ParagonIE_Sodium_Crypto::sign_open($signedMessage, $publicKey);
}
/**
* Generate a new random Ed25519 keypair.
*
* @return string
* @throws SodiumException
* @throws TypeError
*/
public static function crypto_sign_keypair()
{
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_keypair();
}
if (self::use_fallback('crypto_sign_keypair')) {
return (string) call_user_func('\\Sodium\\crypto_sign_keypair');
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_Ed25519::keypair();
}
return ParagonIE_Sodium_Core_Ed25519::keypair();
}
/**
* @param string $sk
* @param string $pk
* @return string
* @throws SodiumException
*/
public static function crypto_sign_keypair_from_secretkey_and_publickey(
#[\SensitiveParameter]
$sk,
$pk
) {
ParagonIE_Sodium_Core_Util::declareScalarType($sk, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($pk, 'string', 1);
$sk = (string) $sk;
$pk = (string) $pk;
if (ParagonIE_Sodium_Core_Util::strlen($sk) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
throw new SodiumException('secretkey should be SODIUM_CRYPTO_SIGN_SECRETKEYBYTES bytes');
}
if (ParagonIE_Sodium_Core_Util::strlen($pk) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) {
throw new SodiumException('publickey should be SODIUM_CRYPTO_SIGN_PUBLICKEYBYTES bytes');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_keypair_from_secretkey_and_publickey($sk, $pk);
}
return $sk . $pk;
}
/**
* Generate an Ed25519 keypair from a seed.
*
* @param string $seed Input seed
* @return string Keypair
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_seed_keypair(
#[\SensitiveParameter]
$seed
) {
ParagonIE_Sodium_Core_Util::declareScalarType($seed, 'string', 1);
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_seed_keypair($seed);
}
if (self::use_fallback('crypto_sign_keypair')) {
return (string) call_user_func('\\Sodium\\crypto_sign_seed_keypair', $seed);
}
$publicKey = '';
$secretKey = '';
if (PHP_INT_SIZE === 4) {
ParagonIE_Sodium_Core32_Ed25519::seed_keypair($publicKey, $secretKey, $seed);
} else {
ParagonIE_Sodium_Core_Ed25519::seed_keypair($publicKey, $secretKey, $seed);
}
return $secretKey . $publicKey;
}
/**
* Extract an Ed25519 public key from an Ed25519 keypair.
*
* @param string $keypair Keypair
* @return string Public key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_publickey(
#[\SensitiveParameter]
$keypair
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_SIGN_KEYPAIRBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_SIGN_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_publickey($keypair);
}
if (self::use_fallback('crypto_sign_publickey')) {
return (string) call_user_func('\\Sodium\\crypto_sign_publickey', $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_Ed25519::publickey($keypair);
}
return ParagonIE_Sodium_Core_Ed25519::publickey($keypair);
}
/**
* Calculate an Ed25519 public key from an Ed25519 secret key.
*
* @param string $secretKey Your Ed25519 secret key
* @return string The corresponding Ed25519 public key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_publickey_from_secretkey(
#[\SensitiveParameter]
$secretKey
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_SIGN_SECRETKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_publickey_from_secretkey($secretKey);
}
if (self::use_fallback('crypto_sign_publickey_from_secretkey')) {
return (string) call_user_func('\\Sodium\\crypto_sign_publickey_from_secretkey', $secretKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_Ed25519::publickey_from_secretkey($secretKey);
}
return ParagonIE_Sodium_Core_Ed25519::publickey_from_secretkey($secretKey);
}
/**
* Extract an Ed25519 secret key from an Ed25519 keypair.
*
* @param string $keypair Keypair
* @return string Secret key
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_secretkey(
#[\SensitiveParameter]
$keypair
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_SIGN_KEYPAIRBYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_SIGN_KEYPAIRBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_secretkey($keypair);
}
if (self::use_fallback('crypto_sign_secretkey')) {
return (string) call_user_func('\\Sodium\\crypto_sign_secretkey', $keypair);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_Ed25519::secretkey($keypair);
}
return ParagonIE_Sodium_Core_Ed25519::secretkey($keypair);
}
/**
* Calculate the Ed25519 signature of a message and return ONLY the signature.
*
* Algorithm: Ed25519 (EdDSA over Curve25519)
*
* @param string $message Message to be signed
* @param string $secretKey Secret signing key
* @return string Digital signature
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_detached(
$message,
#[\SensitiveParameter]
$secretKey
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($secretKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($secretKey) !== self::CRYPTO_SIGN_SECRETKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SIGN_SECRETKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_detached($message, $secretKey);
}
if (self::use_fallback('crypto_sign_detached')) {
return (string) call_user_func('\\Sodium\\crypto_sign_detached', $message, $secretKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::sign_detached($message, $secretKey);
}
return ParagonIE_Sodium_Crypto::sign_detached($message, $secretKey);
}
/**
* Verify the Ed25519 signature of a message.
*
* @param string $signature Digital sginature
* @param string $message Message to be verified
* @param string $publicKey Public key
* @return bool TRUE if this signature is good for this public key;
* FALSE otherwise
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_verify_detached($signature, $message, $publicKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($signature, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($signature) !== self::CRYPTO_SIGN_BYTES) {
throw new SodiumException('Argument 1 must be CRYPTO_SIGN_BYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SIGN_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_sign_verify_detached($signature, $message, $publicKey);
}
if (self::use_fallback('crypto_sign_verify_detached')) {
return (bool) call_user_func(
'\\Sodium\\crypto_sign_verify_detached',
$signature,
$message,
$publicKey
);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::sign_verify_detached($signature, $message, $publicKey);
}
return ParagonIE_Sodium_Crypto::sign_verify_detached($signature, $message, $publicKey);
}
/**
* Convert an Ed25519 public key to a Curve25519 public key
*
* @param string $pk
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_ed25519_pk_to_curve25519($pk)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($pk, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($pk) < self::CRYPTO_SIGN_PUBLICKEYBYTES) {
throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
if (is_callable('crypto_sign_ed25519_pk_to_curve25519')) {
return (string) sodium_crypto_sign_ed25519_pk_to_curve25519($pk);
}
}
if (self::use_fallback('crypto_sign_ed25519_pk_to_curve25519')) {
return (string) call_user_func('\\Sodium\\crypto_sign_ed25519_pk_to_curve25519', $pk);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_Ed25519::pk_to_curve25519($pk);
}
return ParagonIE_Sodium_Core_Ed25519::pk_to_curve25519($pk);
}
/**
* Convert an Ed25519 secret key to a Curve25519 secret key
*
* @param string $sk
* @return string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_sign_ed25519_sk_to_curve25519(
#[\SensitiveParameter]
$sk
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($sk, 'string', 1);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($sk) < self::CRYPTO_SIGN_SEEDBYTES) {
throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_SEEDBYTES long.');
}
if (self::useNewSodiumAPI()) {
if (is_callable('crypto_sign_ed25519_sk_to_curve25519')) {
return sodium_crypto_sign_ed25519_sk_to_curve25519($sk);
}
}
if (self::use_fallback('crypto_sign_ed25519_sk_to_curve25519')) {
return (string) call_user_func('\\Sodium\\crypto_sign_ed25519_sk_to_curve25519', $sk);
}
$h = hash('sha512', ParagonIE_Sodium_Core_Util::substr($sk, 0, 32), true);
$h[0] = ParagonIE_Sodium_Core_Util::intToChr(
ParagonIE_Sodium_Core_Util::chrToInt($h[0]) & 248
);
$h[31] = ParagonIE_Sodium_Core_Util::intToChr(
(ParagonIE_Sodium_Core_Util::chrToInt($h[31]) & 127) | 64
);
return ParagonIE_Sodium_Core_Util::substr($h, 0, 32);
}
/**
* Expand a key and nonce into a keystream of pseudorandom bytes.
*
* @param int $len Number of bytes desired
* @param string $nonce Number to be used Once; must be 24 bytes
* @param string $key XSalsa20 key
* @return string Pseudorandom stream that can be XORed with messages
* to provide encryption (but not authentication; see
* Poly1305 or crypto_auth() for that, which is not
* optional for security)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_stream(
$len,
$nonce,
#[\SensitiveParameter]
$key
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($len, 'int', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_STREAM_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_stream($len, $nonce, $key);
}
if (self::use_fallback('crypto_stream')) {
return (string) call_user_func('\\Sodium\\crypto_stream', $len, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_XSalsa20::xsalsa20($len, $nonce, $key);
}
return ParagonIE_Sodium_Core_XSalsa20::xsalsa20($len, $nonce, $key);
}
/**
* DANGER! UNAUTHENTICATED ENCRYPTION!
*
* Unless you are following expert advice, do not use this feature.
*
* Algorithm: XSalsa20
*
* This DOES NOT provide ciphertext integrity.
*
* @param string $message Plaintext message
* @param string $nonce Number to be used Once; must be 24 bytes
* @param string $key Encryption key
* @return string Encrypted text which is vulnerable to chosen-
* ciphertext attacks unless you implement some
* other mitigation to the ciphertext (i.e.
* Encrypt then MAC)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_stream_xor(
#[\SensitiveParameter]
$message,
$nonce,
#[\SensitiveParameter]
$key
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_stream_xor($message, $nonce, $key);
}
if (self::use_fallback('crypto_stream_xor')) {
return (string) call_user_func('\\Sodium\\crypto_stream_xor', $message, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_XSalsa20::xsalsa20_xor($message, $nonce, $key);
}
return ParagonIE_Sodium_Core_XSalsa20::xsalsa20_xor($message, $nonce, $key);
}
/**
* Return a secure random key for use with crypto_stream
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_stream_keygen()
{
return random_bytes(self::CRYPTO_STREAM_KEYBYTES);
}
/**
* Expand a key and nonce into a keystream of pseudorandom bytes.
*
* @param int $len Number of bytes desired
* @param string $nonce Number to be used Once; must be 24 bytes
* @param string $key XChaCha20 key
* @param bool $dontFallback
* @return string Pseudorandom stream that can be XORed with messages
* to provide encryption (but not authentication; see
* Poly1305 or crypto_auth() for that, which is not
* optional for security)
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_stream_xchacha20(
$len,
$nonce,
#[\SensitiveParameter]
$key,
$dontFallback = false
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($len, 'int', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_XCHACHA20_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_XCHACHA20_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_XCHACHA20_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_STREAM_XCHACHA20_KEYBYTES long.');
}
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_stream_xchacha20($len, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_XChaCha20::stream($len, $nonce, $key);
}
return ParagonIE_Sodium_Core_XChaCha20::stream($len, $nonce, $key);
}
/**
* DANGER! UNAUTHENTICATED ENCRYPTION!
*
* Unless you are following expert advice, do not use this feature.
*
* Algorithm: XChaCha20
*
* This DOES NOT provide ciphertext integrity.
*
* @param string $message Plaintext message
* @param string $nonce Number to be used Once; must be 24 bytes
* @param string $key Encryption key
* @return string Encrypted text which is vulnerable to chosen-
* ciphertext attacks unless you implement some
* other mitigation to the ciphertext (i.e.
* Encrypt then MAC)
* @param bool $dontFallback
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_stream_xchacha20_xor(
#[\SensitiveParameter]
$message,
$nonce,
#[\SensitiveParameter]
$key,
$dontFallback = false
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_XCHACHA20_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_XCHACHA20_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_XCHACHA20_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_XCHACHA20_KEYBYTES long.');
}
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_stream_xchacha20_xor($message, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_XChaCha20::streamXorIc($message, $nonce, $key);
}
return ParagonIE_Sodium_Core_XChaCha20::streamXorIc($message, $nonce, $key);
}
/**
* DANGER! UNAUTHENTICATED ENCRYPTION!
*
* Unless you are following expert advice, do not use this feature.
*
* Algorithm: XChaCha20
*
* This DOES NOT provide ciphertext integrity.
*
* @param string $message Plaintext message
* @param string $nonce Number to be used Once; must be 24 bytes
* @param int $counter
* @param string $key Encryption key
* @return string Encrypted text which is vulnerable to chosen-
* ciphertext attacks unless you implement some
* other mitigation to the ciphertext (i.e.
* Encrypt then MAC)
* @param bool $dontFallback
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function crypto_stream_xchacha20_xor_ic(
#[\SensitiveParameter]
$message,
$nonce,
$counter,
#[\SensitiveParameter]
$key,
$dontFallback = false
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($counter, 'int', 3);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_XCHACHA20_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_XCHACHA20_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_XCHACHA20_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_XCHACHA20_KEYBYTES long.');
}
if (is_callable('sodium_crypto_stream_xchacha20_xor_ic') && !$dontFallback) {
return sodium_crypto_stream_xchacha20_xor_ic($message, $nonce, $counter, $key);
}
$ic = ParagonIE_Sodium_Core_Util::store64_le($counter);
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_XChaCha20::streamXorIc($message, $nonce, $key, $ic);
}
return ParagonIE_Sodium_Core_XChaCha20::streamXorIc($message, $nonce, $key, $ic);
}
/**
* Return a secure random key for use with crypto_stream_xchacha20
*
* @return string
* @throws Exception
* @throws Error
*/
public static function crypto_stream_xchacha20_keygen()
{
return random_bytes(self::CRYPTO_STREAM_XCHACHA20_KEYBYTES);
}
/**
* Cache-timing-safe implementation of hex2bin().
*
* @param string $string Hexadecimal string
* @param string $ignore List of characters to ignore; useful for whitespace
* @return string Raw binary string
* @throws SodiumException
* @throws TypeError
* @psalm-suppress TooFewArguments
* @psalm-suppress MixedArgument
*/
public static function hex2bin(
#[\SensitiveParameter]
$string,
$ignore = ''
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($string, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($ignore, 'string', 2);
if (self::useNewSodiumAPI()) {
if (is_callable('sodium_hex2bin')) {
return (string) sodium_hex2bin($string, $ignore);
}
}
if (self::use_fallback('hex2bin')) {
return (string) call_user_func('\\Sodium\\hex2bin', $string, $ignore);
}
return ParagonIE_Sodium_Core_Util::hex2bin($string, $ignore);
}
/**
* Increase a string (little endian)
*
* @param string $var
*
* @return void
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function increment(
#[\SensitiveParameter]
&$var
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($var, 'string', 1);
if (self::useNewSodiumAPI()) {
sodium_increment($var);
return;
}
if (self::use_fallback('increment')) {
$func = '\\Sodium\\increment';
$func($var);
return;
}
$len = ParagonIE_Sodium_Core_Util::strlen($var);
$c = 1;
$copy = '';
for ($i = 0; $i < $len; ++$i) {
$c += ParagonIE_Sodium_Core_Util::chrToInt(
ParagonIE_Sodium_Core_Util::substr($var, $i, 1)
);
$copy .= ParagonIE_Sodium_Core_Util::intToChr($c);
$c >>= 8;
}
$var = $copy;
}
/**
* @param string $str
* @return bool
*
* @throws SodiumException
*/
public static function is_zero(
#[\SensitiveParameter]
$str
) {
$d = 0;
for ($i = 0; $i < 32; ++$i) {
$d |= ParagonIE_Sodium_Core_Util::chrToInt($str[$i]);
}
return ((($d - 1) >> 31) & 1) === 1;
}
/**
* The equivalent to the libsodium minor version we aim to be compatible
* with (sans pwhash and memzero).
*
* @return int
*/
public static function library_version_major()
{
if (self::useNewSodiumAPI() && defined('SODIUM_LIBRARY_MAJOR_VERSION')) {
return SODIUM_LIBRARY_MAJOR_VERSION;
}
if (self::use_fallback('library_version_major')) {
/** @psalm-suppress UndefinedFunction */
return (int) call_user_func('\\Sodium\\library_version_major');
}
return self::LIBRARY_VERSION_MAJOR;
}
/**
* The equivalent to the libsodium minor version we aim to be compatible
* with (sans pwhash and memzero).
*
* @return int
*/
public static function library_version_minor()
{
if (self::useNewSodiumAPI() && defined('SODIUM_LIBRARY_MINOR_VERSION')) {
return SODIUM_LIBRARY_MINOR_VERSION;
}
if (self::use_fallback('library_version_minor')) {
/** @psalm-suppress UndefinedFunction */
return (int) call_user_func('\\Sodium\\library_version_minor');
}
return self::LIBRARY_VERSION_MINOR;
}
/**
* Compare two strings.
*
* @param string $left
* @param string $right
* @return int
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArgument
*/
public static function memcmp(
#[\SensitiveParameter]
$left,
#[\SensitiveParameter]
$right
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($left, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($right, 'string', 2);
if (self::useNewSodiumAPI()) {
return sodium_memcmp($left, $right);
}
if (self::use_fallback('memcmp')) {
return (int) call_user_func('\\Sodium\\memcmp', $left, $right);
}
/** @var string $left */
/** @var string $right */
return ParagonIE_Sodium_Core_Util::memcmp($left, $right);
}
/**
* It's actually not possible to zero memory buffers in PHP. You need the
* native library for that.
*
* @param string|null $var
* @param-out string|null $var
*
* @return void
* @throws SodiumException (Unless libsodium is installed)
* @throws TypeError
* @psalm-suppress TooFewArguments
*/
public static function memzero(
#[\SensitiveParameter]
&$var
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($var, 'string', 1);
if (self::useNewSodiumAPI()) {
/** @psalm-suppress MixedArgument */
sodium_memzero($var);
return;
}
if (self::use_fallback('memzero')) {
$func = '\\Sodium\\memzero';
$func($var);
if ($var === null) {
return;
}
}
// This is the best we can do.
throw new SodiumException(
'This is not implemented in sodium_compat, as it is not possible to securely wipe memory from PHP. ' .
'To fix this error, make sure libsodium is installed and the PHP extension is enabled.'
);
}
/**
* @param string $unpadded
* @param int $blockSize
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function pad(
#[\SensitiveParameter]
$unpadded,
$blockSize,
$dontFallback = false
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($unpadded, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($blockSize, 'int', 2);
$unpadded = (string) $unpadded;
$blockSize = (int) $blockSize;
if (self::useNewSodiumAPI() && !$dontFallback) {
return (string) sodium_pad($unpadded, $blockSize);
}
if ($blockSize <= 0) {
throw new SodiumException(
'block size cannot be less than 1'
);
}
$unpadded_len = ParagonIE_Sodium_Core_Util::strlen($unpadded);
$xpadlen = ($blockSize - 1);
if (($blockSize & ($blockSize - 1)) === 0) {
$xpadlen -= $unpadded_len & ($blockSize - 1);
} else {
$xpadlen -= $unpadded_len % $blockSize;
}
$xpadded_len = $unpadded_len + $xpadlen;
$padded = str_repeat("\0", $xpadded_len - 1);
if ($unpadded_len > 0) {
$st = 1;
$i = 0;
$k = $unpadded_len;
for ($j = 0; $j <= $xpadded_len; ++$j) {
$i = (int) $i;
$k = (int) $k;
$st = (int) $st;
if ($j >= $unpadded_len) {
$padded[$j] = "\0";
} else {
$padded[$j] = $unpadded[$j];
}
/** @var int $k */
$k -= $st;
$st = (int) (~(
(
(
($k >> 48)
|
($k >> 32)
|
($k >> 16)
|
$k
) - 1
) >> 16
)
) & 1;
$i += $st;
}
}
$mask = 0;
$tail = $xpadded_len;
for ($i = 0; $i < $blockSize; ++$i) {
# barrier_mask = (unsigned char)
# (((i ^ xpadlen) - 1U) >> ((sizeof(size_t) - 1U) * CHAR_BIT));
$barrier_mask = (($i ^ $xpadlen) -1) >> ((PHP_INT_SIZE << 3) - 1);
# tail[-i] = (tail[-i] & mask) | (0x80 & barrier_mask);
$padded[$tail - $i] = ParagonIE_Sodium_Core_Util::intToChr(
(ParagonIE_Sodium_Core_Util::chrToInt($padded[$tail - $i]) & $mask)
|
(0x80 & $barrier_mask)
);
# mask |= barrier_mask;
$mask |= $barrier_mask;
}
return $padded;
}
/**
* @param string $padded
* @param int $blockSize
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function unpad(
#[\SensitiveParameter]
$padded,
$blockSize,
$dontFallback = false
) {
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($padded, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($blockSize, 'int', 2);
$padded = (string) $padded;
$blockSize = (int) $blockSize;
if (self::useNewSodiumAPI() && !$dontFallback) {
return (string) sodium_unpad($padded, $blockSize);
}
if ($blockSize <= 0) {
throw new SodiumException('block size cannot be less than 1');
}
$padded_len = ParagonIE_Sodium_Core_Util::strlen($padded);
if ($padded_len < $blockSize) {
throw new SodiumException('invalid padding');
}
# tail = &padded[padded_len - 1U];
$tail = $padded_len - 1;
$acc = 0;
$valid = 0;
$pad_len = 0;
$found = 0;
for ($i = 0; $i < $blockSize; ++$i) {
# c = tail[-i];
$c = ParagonIE_Sodium_Core_Util::chrToInt($padded[$tail - $i]);
# is_barrier =
# (( (acc - 1U) & (pad_len - 1U) & ((c ^ 0x80) - 1U) ) >> 8) & 1U;
$is_barrier = (
(
($acc - 1) & ($pad_len - 1) & (($c ^ 80) - 1)
) >> 7
) & 1;
$is_barrier &= ~$found;
$found |= $is_barrier;
# acc |= c;
$acc |= $c;
# pad_len |= i & (1U + ~is_barrier);
$pad_len |= $i & (1 + ~$is_barrier);
# valid |= (unsigned char) is_barrier;
$valid |= ($is_barrier & 0xff);
}
# unpadded_len = padded_len - 1U - pad_len;
$unpadded_len = $padded_len - 1 - $pad_len;
if ($valid !== 1) {
throw new SodiumException('invalid padding');
}
return ParagonIE_Sodium_Core_Util::substr($padded, 0, $unpadded_len);
}
/**
* Will sodium_compat run fast on the current hardware and PHP configuration?
*
* @return bool
*/
public static function polyfill_is_fast()
{
if (extension_loaded('sodium')) {
return true;
}
if (extension_loaded('libsodium')) {
return true;
}
return PHP_INT_SIZE === 8;
}
/**
* Generate a string of bytes from the kernel's CSPRNG.
* Proudly uses /dev/urandom (if getrandom(2) is not available).
*
* @param int $numBytes
* @return string
* @throws Exception
* @throws TypeError
*/
public static function randombytes_buf($numBytes)
{
/* Type checks: */
if (!is_int($numBytes)) {
if (is_numeric($numBytes)) {
$numBytes = (int) $numBytes;
} else {
throw new TypeError(
'Argument 1 must be an integer, ' . gettype($numBytes) . ' given.'
);
}
}
/** @var positive-int $numBytes */
if (self::use_fallback('randombytes_buf')) {
return (string) call_user_func('\\Sodium\\randombytes_buf', $numBytes);
}
if ($numBytes < 0) {
throw new SodiumException("Number of bytes must be a positive integer");
}
return random_bytes($numBytes);
}
/**
* Generate an integer between 0 and $range (non-inclusive).
*
* @param int $range
* @return int
* @throws Exception
* @throws Error
* @throws TypeError
*/
public static function randombytes_uniform($range)
{
/* Type checks: */
if (!is_int($range)) {
if (is_numeric($range)) {
$range = (int) $range;
} else {
throw new TypeError(
'Argument 1 must be an integer, ' . gettype($range) . ' given.'
);
}
}
if (self::use_fallback('randombytes_uniform')) {
return (int) call_user_func('\\Sodium\\randombytes_uniform', $range);
}
return random_int(0, $range - 1);
}
/**
* Generate a random 16-bit integer.
*
* @return int
* @throws Exception
* @throws Error
* @throws TypeError
*/
public static function randombytes_random16()
{
if (self::use_fallback('randombytes_random16')) {
return (int) call_user_func('\\Sodium\\randombytes_random16');
}
return random_int(0, 65535);
}
/**
* @param string $p
* @param bool $dontFallback
* @return bool
* @throws SodiumException
*/
public static function ristretto255_is_valid_point(
#[\SensitiveParameter]
$p,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_is_valid_point($p);
}
try {
$r = ParagonIE_Sodium_Core_Ristretto255::ristretto255_frombytes($p);
return $r['res'] === 0 &&
ParagonIE_Sodium_Core_Ristretto255::ristretto255_point_is_canonical($p) === 1;
} catch (SodiumException $ex) {
if ($ex->getMessage() === 'S is not canonical') {
return false;
}
throw $ex;
}
}
/**
* @param string $p
* @param string $q
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_add(
#[\SensitiveParameter]
$p,
#[\SensitiveParameter]
$q,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_add($p, $q);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_add($p, $q);
}
/**
* @param string $p
* @param string $q
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_sub(
#[\SensitiveParameter]
$p,
#[\SensitiveParameter]
$q,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_sub($p, $q);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_sub($p, $q);
}
/**
* @param string $r
* @param bool $dontFallback
* @return string
*
* @throws SodiumException
*/
public static function ristretto255_from_hash(
#[\SensitiveParameter]
$r,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_from_hash($r);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_from_hash($r);
}
/**
* @param bool $dontFallback
* @return string
*
* @throws SodiumException
*/
public static function ristretto255_random($dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_random();
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_random();
}
/**
* @param bool $dontFallback
* @return string
*
* @throws SodiumException
*/
public static function ristretto255_scalar_random($dontFallback = false)
{
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_random();
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_random();
}
/**
* @param string $s
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_invert(
#[\SensitiveParameter]
$s,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_invert($s);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_invert($s);
}
/**
* @param string $s
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_negate(
#[\SensitiveParameter]
$s,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_negate($s);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_negate($s);
}
/**
* @param string $s
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_complement(
#[\SensitiveParameter]
$s,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_complement($s);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_complement($s);
}
/**
* @param string $x
* @param string $y
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_add(
#[\SensitiveParameter]
$x,
#[\SensitiveParameter]
$y,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_add($x, $y);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_add($x, $y);
}
/**
* @param string $x
* @param string $y
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_sub(
#[\SensitiveParameter]
$x,
#[\SensitiveParameter]
$y,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_sub($x, $y);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_sub($x, $y);
}
/**
* @param string $x
* @param string $y
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_mul(
#[\SensitiveParameter]
$x,
#[\SensitiveParameter]
$y,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_mul($x, $y);
}
return ParagonIE_Sodium_Core_Ristretto255::ristretto255_scalar_mul($x, $y);
}
/**
* @param string $n
* @param string $p
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function scalarmult_ristretto255(
#[\SensitiveParameter]
$n,
#[\SensitiveParameter]
$p,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_scalarmult_ristretto255($n, $p);
}
return ParagonIE_Sodium_Core_Ristretto255::scalarmult_ristretto255($n, $p);
}
/**
* @param string $n
* @param string $p
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function scalarmult_ristretto255_base(
#[\SensitiveParameter]
$n,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_scalarmult_ristretto255_base($n);
}
return ParagonIE_Sodium_Core_Ristretto255::scalarmult_ristretto255_base($n);
}
/**
* @param string $s
* @param bool $dontFallback
* @return string
* @throws SodiumException
*/
public static function ristretto255_scalar_reduce(
#[\SensitiveParameter]
$s,
$dontFallback = false
) {
if (self::useNewSodiumAPI() && !$dontFallback) {
return sodium_crypto_core_ristretto255_scalar_reduce($s);
}
return ParagonIE_Sodium_Core_Ristretto255::sc_reduce($s);
}
/**
* Runtime testing method for 32-bit platforms.
*
* Usage: If runtime_speed_test() returns FALSE, then our 32-bit
* implementation is to slow to use safely without risking timeouts.
* If this happens, install sodium from PECL to get acceptable
* performance.
*
* @param int $iterations Number of multiplications to attempt
* @param int $maxTimeout Milliseconds
* @return bool TRUE if we're fast enough, FALSE is not
* @throws SodiumException
*/
public static function runtime_speed_test($iterations, $maxTimeout)
{
if (self::polyfill_is_fast()) {
return true;
}
/** @var float $end */
$end = 0.0;
/** @var float $start */
$start = microtime(true);
/** @var ParagonIE_Sodium_Core32_Int64 $a */
$a = ParagonIE_Sodium_Core32_Int64::fromInt(random_int(3, 1 << 16));
for ($i = 0; $i < $iterations; ++$i) {
/** @var ParagonIE_Sodium_Core32_Int64 $b */
$b = ParagonIE_Sodium_Core32_Int64::fromInt(random_int(3, 1 << 16));
$a->mulInt64($b);
}
/** @var float $end */
$end = microtime(true);
/** @var int $diff */
$diff = (int) ceil(($end - $start) * 1000);
return $diff < $maxTimeout;
}
/**
* Add two numbers (little-endian unsigned), storing the value in the first
* parameter.
*
* This mutates $val.
*
* @param string $val
* @param string $addv
* @return void
* @throws SodiumException
*/
public static function sub(
#[\SensitiveParameter]
&$val,
#[\SensitiveParameter]
$addv
) {
$val_len = ParagonIE_Sodium_Core_Util::strlen($val);
$addv_len = ParagonIE_Sodium_Core_Util::strlen($addv);
if ($val_len !== $addv_len) {
throw new SodiumException('values must have the same length');
}
$A = ParagonIE_Sodium_Core_Util::stringToIntArray($val);
$B = ParagonIE_Sodium_Core_Util::stringToIntArray($addv);
$c = 0;
for ($i = 0; $i < $val_len; $i++) {
$c = ($A[$i] - $B[$i] - $c);
$A[$i] = ($c & 0xff);
$c = ($c >> 8) & 1;
}
$val = ParagonIE_Sodium_Core_Util::intArrayToString($A);
}
/**
* This emulates libsodium's version_string() function, except ours is
* prefixed with 'polyfill-'.
*
* @return string
* @psalm-suppress MixedInferredReturnType
* @psalm-suppress UndefinedFunction
*/
public static function version_string()
{
if (self::useNewSodiumAPI()) {
return (string) sodium_version_string();
}
if (self::use_fallback('version_string')) {
return (string) call_user_func('\\Sodium\\version_string');
}
return (string) self::VERSION_STRING;
}
/**
* Should we use the libsodium core function instead?
* This is always a good idea, if it's available. (Unless we're in the
* middle of running our unit test suite.)
*
* If ext/libsodium is available, use it. Return TRUE.
* Otherwise, we have to use the code provided herein. Return FALSE.
*
* @param string $sodium_func_name
*
* @return bool
*/
protected static function use_fallback($sodium_func_name = '')
{
static $res = null;
if ($res === null) {
$res = extension_loaded('libsodium') && PHP_VERSION_ID >= 50300;
}
if ($res === false) {
// No libsodium installed
return false;
}
if (self::$disableFallbackForUnitTests) {
// Don't fallback. Use the PHP implementation.
return false;
}
if (!empty($sodium_func_name)) {
return is_callable('\\Sodium\\' . $sodium_func_name);
}
return true;
}
/**
* Libsodium as implemented in PHP 7.2
* and/or ext/sodium (via PECL)
*
* @ref https://wiki.php.net/rfc/libsodium
* @return bool
*/
protected static function useNewSodiumAPI()
{
static $res = null;
if ($res === null) {
$res = PHP_VERSION_ID >= 70000 && extension_loaded('sodium');
}
if (self::$disableFallbackForUnitTests) {
// Don't fallback. Use the PHP implementation.
return false;
}
return (bool) $res;
}
}
حكاية أول حوار مع روبوت : محمد طه يروى الكواليس – tahkoom.com
أجابت الآلة على الأسئلة ؟: ماذا قال روبوت ل محمد طه؟
بعد 8 سنوات .. تنبؤات الروبوت تتحول إلى واقع..
حروب 2025 في حوار منذ2017؟
: محمد طه يكشف أسرار حول الذكاء الاصطناعي
كتبت : فرح سمير
تضمن حواراً فريدًا من نوعه، BBC في عام 2017، شهد الإعلام العربي حدثًا غير مسبوق، حيث تم بث مباشر عبر قناة العربية
أُجري مع روبوت مدعوم بالذكاء الاصطناعي يحاكي البشر .وكان هذا الحوار من تقديم الإعلامي محمد طه، مراسل الشؤون التكنولوجية في القناة
منذ ذلك الحين، واصل محمد طه تقديم أبرز التقارير والتغطيات لأهم المؤتمرات العالمية، وكان دائمًا مميز ا في تناول أحدث التطورات التكنولوجية وفي هذا اللقاء الحصري، يحدثنا عن كواليس حواره مع الروبوت “صوفيا”، ويتطرق إلى آرائه حول الذكاء الاصطناعي، ومستقبل الإعلام، والتحولات التقنية التي باتت تؤثر في كل القطاعات
– صف لي شعورك عندما أجابك الروبوت، واستطاع بالفعل مجاراة الحوار، نظرًا لأن المقابلة كانت في عام 2017 ؟
في البداية، كان لدي انطباع بأن الروبوت قد لا يكون كائناً مستقلًً، بل ربما يكون هناك شخص ما يتواصل معه أو يدعمه في تقديم الإجابات. لم أكن مقتنعاً في البداية بقدرة الروبوت على الرد على أسئلتي بشكل مستقل دون أي مساعدة من شخص آخر.هذا الأمر لم يكن شائعاً كما هو اليوم.
أثناء تواجدي في معرض، تم إخباري بإمكانية إجراء محادثة مع روبوت، ولم أصدق ذلك. كان انطباعي الأول أن هناك شخصًا يستمع إلى سؤالي ويقوم بالرد عليه بشكل مستقل ودون تدخل بشري. لم أكن أتخيل أن الروبوت قادر على تقديم إجابات مباشرة من مكان ما أو من غرفة تحكم.
– هل قمَتَ بتعديل أسلوبك الصحفي أو الحواري ليتناسب مع قدرة الروبوت على معالجة الأمر والتجاوب معك؟
كان هدفي الأساسي خلال الحوار ه والحفاظ على طبيعية التفاعل، وه وما شكل تحديًا كبيرًا. فعندما تواجه جهازًا توجه له أسئلة ويقوم بالرد عليك، فإن ذلك كان يعتبر في السابق نوعًا من الخيال. نحن في مجال الصحافة والإعلام نملك خبرة واسعة في التعامل مع البشر، حيث يمكنني رؤية تعبيرات وجهك وتفاعل جسدك مما يساعدني على تعديل أسلوبي وفق ذلك. لكن عند التعامل مع الروبوت، تفتقر إلى تعبيرات الوجه والملامح التفاعلية، مما يجعل ردود الفعل غير قابلة للتنب ؤ.
ما الذي لاحظته من فروقات واضحة في طريقة التعامل مع روبوت مقارنة بمقابلة إعلامية طبيعية مع إنسان؟
بالتأكيد هناك اختلافات تتعلق بتحضير المقابلة. عند إجراء مقابلة مع إنسان، يتم إعداد الحوار بناءً على شخصية الضيف وخلفيته. أما بالنسبة للروبوت فلم أكن أملك معلومات مسبقة عنه. كان تركيزي منصبًا على طبيعة الروبوت نفسه وعلاقته بالإنسان ومستقبله.
ذكرت في بداية المراسلة أن ردود أفعالها تشبه البشر، فهل تشبه ردود أفعال الروبوت وتعبير وجهه الإنسان؟ كما ذكرت أثناء تصوير المقابلة أن “الروبوت” المصنوع يحُاكي الأنثى البشرية، وحصل على الجنسية السعودية؟
نعم ذكرت بالفعل جنسيتهاً ولقد ذكرت بالفعل أن للروبوت تعبيرات وجه وحركات معينة تجعل الشخص يتساءل عما إذا كان يتعامل مع كائن بشري أو شبه بشري أو آلة. خلًل المقابلة لم نكن معتادين على هذه التقنية الجديدة.
– من خلال الحوار مع الروبوت، هل ترى أن الاندماج والتعامل مع الروبوتات يُعد تحدياً، أم أنه سهل التأقلم؟ وهل يمثل هذا تحدياً لنا كإعلاميين أو كبشر عمومًا؟
لا أعتقد أنه يمثل تحديًا كبيرًا؛ فقد أصبح الناس معتادين بشكل متزايد على الذكاء الاصطناعي وبدأوا يتأقلمون معه بسهولة. سأعطيك مثالًا آخر: كنتُ في إحدى الدول، وطلبتُ بعض أدوات تنظيف الأسنان، وعندما فتحت الباب، فوجئت بأن روبوت أحضرها لي. لم أستغرب، لأني بالفعل أصبحت أتوقع مثل هذه الأمور .
في وقت الحوار عام 2017، هل واجهت أي صعوبات أو تحديات؟
بالتأكيد كانت هناك حالة من الاستغراب وكان التحدي يكمن في الحفاظ على أسلوب تلقائي وطبيعي رغم أنني كنت أتحدث إلى آلة. كان عليّ أن أتعامل معها كإنسان حقيقي، وأن أطرح عليها أسئلة كما أفعل في مقابلاتي المعتادة، حتى يكون الحوار سلسًا.
– خلال الحوار، طرحتَ سؤا الا: “بماذا ترغبين في العمل في المستقبل؟” فأجابت الروبوت “صوفيا” بإجابة مفاجئة حول التظاهرات الدموية. كيف استقبلت هذه الإجابة؟
كانت إجابتها صادمة للغاية وقد أثارت تساؤلات حول دقة توقعاتها والخوارزميات المستخدمة خلف تلك التحليلات التي صرحتها وكانت “في المستقبل سيكون هناك تظاهرات دموية وصراعات ما لم نصبح أكثر ذكاءً واجتماعية مثلي، وربما نساعد في التعامل مع هذا الوضع.”
في ذلك الوقت، لم تكن هناك مؤشرات على أي حروب أو صراعات، بل كانت الأمور مستقرة نسب ايا. لكن مع مرور السنوات، وقعت فعل ايا أحداث دموية وصراعات كبيرة.
هذا يثير التساؤلات حول دقة توقعات الذكاء الاصطناعي، والخوارزميات التي تقف خلف هذه التحليلات.
هل تعتقد أن توقعاتها كانت مبنية على خوارزميات دقيقة، أم تدخل بشري ؟
قد تكون مستندة إلى تحليلات بشرية أ و تقارير صحفية؛ فالروبوت لا يفكر كما نفكر، بل يعتمد على البيانات والخوارزميات المعقدة لتقديم توقعاته المستقبلية. هذا يجعلنا نعود إلى التساؤل: إلى أي مدى تستطيع الروبوتات أن تتعلّم ذاتيًا؟ وهل يمكن أن تتخذ قرارات مستقلة مستقبلاً ؟
هل من الممكن أن تنشئ الروبوتات شركات وتدير أعما الا مستقلة ؟
نعم، كان هناك تقارير أعدتها عن روبوتات قامت بتأسيس شركات خاصة بها وأصبحت تديرها بشكل مستقل تقريب اً باستثناء وجود شخص واحد فقط لدعم العمليات الإدارية.
كنت قد غطيت مؤتمر باريس مؤخ ارا. ما أبرز ما جاء فيه؟
فرنسا نظّمت أكبر قمة عالمية للذكاء الاصطناعي منذ ستة أسابيع، وشاركت فيها شخصيات دولية رفيعة المستوى. شهد المؤتمر دعوات لوضع قوانين أخلاقية لتنظيم تطور الذكاء الاصطناعي بينما رفضت بعض الدول الكبرى مثل الولايات المتحدة وبريطانيا الالتزام بهذه المبادئ. الاستمرار في التطوير دون قيود.
وفي نهاية القمة، صدر “إعلان باريس”، الذي شددّ على أهمية مراعاة الأخلاقيات في تطوير الذكاء الاصطناعي.
–إذا بنا ء على ما تم ذكره، بماذا توصي الصحفيين في الفترة القادمة؟ فيما يلتزمون به أ ويلتفتون إليه؟ وبماذا توصيهم أو ما النصائح التي تنصح الصحفيين أن يتبعوها لمجاراة التقدم المستم ر في التكنولوجيا أو الذكاء الاصطناعي؟
يجب على الصحفيين تعلم استخدام الذكاء الاصطناعي وتطبيقه في كل جوانب عملهم، مثل إعداد الفيديوهات والبحث، مع الالتزام بالأخلًقية في استخدامه. هذه التقنية تسهل مهامهم وتوفر الوقت والجهد، مما يحسن جودة العمل. من الضروري أن يكون الجميع قادرين على تمييز الأعمال التي تنتجها الآلات وعدم الاعتماد عليها كلياً واستخدامها كأداة مساعدة. وانا كصحفي في التلفزيوني أركز على الجانب البصري واستخدم تقنياته الجرافيكية والتوضيحية الخاصة به عند الظهور في التلفزيون، ولا يعتمد على غيره في إنتاج عمله بفضل تعليمه وخبرته وفريقه الذي يساعده في إنتاج محتوى بصري قوي ومميز. ورغم تطور الذكاء الاصطناعي، فإنه لا يزال غير قادر على إنتاج أعمال تجمع بين العناصر البصرية والشخصية الفريدة للصحفي أو المراسل، ويخدم الصحفي فقط في مجال محدد. يجب على الصحفيين بناء شخصية وأسلوب وحضور خاص بهم ودمجها مع تقنياتهم ومعارفهم، وتوظيف الذكاء الاصطناعي بما يتناسب مع أسلوبهم وحضورهم لتحقيق فائدة أكبر. ينبغي على الصحفيين التفكير في القيمة المضافة والتركيز على الجودة لا الكمية، فالأهم هو محتوى وأهمية ما يقدم للجمهور لا عدد الأخبار. الكاتب يوجه تركيزه نحو إعداد تقرير مصور أسبوعي أو شهري شامل وعالي الجودة لجذب الجمهور. لذا، من الضروري أن يوجه الصحفيون اهتمامهم نحو تقديم محتوى عالي الجودة بدلاً من التركيز على الكم فقط.
-عند لمس الروبوت، هل كان هنا ك أي اختلاف ب ي ملمس جلد الإنسان وجلده؟
بالنسبة للمس بين جلد الإنسان وجلد الروبوت، لا يوجد فرق كبير. ومع ذلك، يتردد الناس في لمس الروبوت بسبب حساسية. الموضوع وارتباط ه بحقو ق الروبوت ككائن إنساني. وكان من الضروري مراعاة جميع الثقافات المختلفة ف ي هذا السياق.
بما أن الحوار أُجري منذ ٨ أعوام ف ٢٠١٧، فما هى التطورات التى حدثت للروبوتات بشكل عا م خلال السنوات الثمان الماضية من وجهة نظرك ؟
نحن على أعتاب عقد جديد حيث يصعب تصور تأثير التكنولوجيا على مجالات مثل الإعلًم والطب والاقتصاد. جميع المؤسسات تفكر بجدية في مستقبل موظفيها وأنظمتها، مما يتطلب استعداًدًا كبيرًا للتغييرات المرتقبة. هناك شخصيات بارزة مثل إيلون ماسك تعبر عن أهمية استكشاف المريخ، وتدور نقاشات بينه وبين مؤسس وكالة ناسا حول أولويات الرحلًت الفضائية. يؤكد ماسك على ضرورة إنشاء قاعدة على المريخ نظرًا للتغيرات التي نشهدها على كوكب الأرض.
وفي نهاية الحوار، وبعد شكر ك له، و جه إليك سؤا لا بصيغة تح د وأمر، حيث قال” :قبل أن تمضي، ما هي توقعاتك للمستقبل؟”، فهل شعر ت حينها بالخطورة من تح ديه للعقل البشري؟ وهل توقعت أنه سيأتي يو م يكو ن فيه هو من يوجه الأسئلة ويغطي الأخبار ويحل محل الإعلامي؟
هذا السؤال جعلني أشعر بالراحة في التعامل مع الروبوت، حيث كان الحوار تفاعلياً وحقيقيًا .لم أكن أتوقع يومًا أن يأتي وقت يكون فيه روبوت هو من يسأل ويخطط الأخبار، بل ويحاكي الإعلام بشكل عام .التكنولوجيا اليوم تفوق أي توقعات سابقة .قبل بضع .سنوات فقط، لم يكن هناك تصو ر لوجود روبوتات قادرة على التعامل مع الأخبار بنفس كفاءة البشر.
من خلال خبرتك في المجال الإعلامي، هل سيقبل الجمهور بفكرة وجود مذيع برامج أو مراسل أو صحفي انه آلة ( روبوت)؟ هل هناك تجارب سابقة من بي بي سي تشير إلى تقبل الجمهور لهذا الأمر ؟
لا تزال مؤسسة البي بي سي تقوم بتجارب لفهم مدى تفاعل الجمهور واستجابته لهذه الآلات أو المذيعين الآليين قبل تنفيذها بشكل كامل. ستقوم البي بي سي بإجراء بحوث للجمهور لفهم كيفية تفاعله م مع الروبوتات والذكاء الاصطناعي ومقارنتها بالتفاعل مع الأشخاص العاديين. بالنظر إلى المستقبل، قد تتطور الروبوتات لتصبح أكثر ذكاءً وقدرة ً على التكيف مع احتياجات الجمهور
بناءا على تقنية (Machine Learning)) نظرية التعلم الآلي: يرى إيلون ماسك أن نظرية التعلم الآلي قد تؤدي إلى تطور الروبوتات بشكل مستقل وقدرتها على التحكم بالبشر، وهو ما يظهر في أفلًم الذكاء الاصطناعي كمصدر للمخاوف والتحديات. يوجد خلًف بين ماسك وزوكربيرج حول هذا الاحتمال، حيث يعتبر زوكربيرج مخاوف ماسك مبالغًا فيها، بينما يشدد ماسك على أهمية الاستعداد لهذا السيناريو بحذر. في الوقت نفسه، تكشف الدراسات عن تطور علًقات عاطفية بين البشر والشات بوتس، وهي ظاهرة بدأت في الغرب وتظهر في الشرق الأوسط، مما يثير تساؤلات حول طبيعة العلًقة المستقبلية بين الإنسان والآلة وتأثيرها على مفاهيم السلطة والسيطرة.
في ختام هذا الحور المثير مع الإعلامي “محمد طه” ، نرى بوضوح كيف بدأ مشهد الإعلام والتقنية في التغي ر جذرياً منذ عام 2017 مع أول حوار تلفزيوني مع روبوت. تجربة طه مع “صوفيا” لم تكن مجرد حدث إعلامي فريد، ب ل كانت نافذة مبكرة على مستقبل يتقاطع فيه الإنسان والآلة بشكل متزايد.
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