<?php
if (class_exists('ParagonIE_Sodium_Core_AES_Block', false)) {
return;
}
/**
* @internal This should only be used by sodium_compat
*/
class ParagonIE_Sodium_Core_AES_Block extends SplFixedArray
{
/**
* @var array<int, int>
*/
protected $values = array();
/**
* @var int
*/
protected $size;
/**
* @param int $size
*/
public function __construct($size = 8)
{
parent::__construct($size);
$this->size = $size;
$this->values = array_fill(0, $size, 0);
}
/**
* @return self
*/
public static function init()
{
return new self(8);
}
/**
* @internal You should not use this directly from another application
*
* @param array<int, int> $array
* @param bool $save_indexes
* @return self
*
* @psalm-suppress MethodSignatureMismatch
*/
#[ReturnTypeWillChange]
public static function fromArray($array, $save_indexes = null)
{
$count = count($array);
if ($save_indexes) {
$keys = array_keys($array);
} else {
$keys = range(0, $count - 1);
}
$array = array_values($array);
/** @var array<int, int> $keys */
$obj = new ParagonIE_Sodium_Core_AES_Block();
if ($save_indexes) {
for ($i = 0; $i < $count; ++$i) {
$obj->offsetSet($keys[$i], $array[$i]);
}
} else {
for ($i = 0; $i < $count; ++$i) {
$obj->offsetSet($i, $array[$i]);
}
}
return $obj;
}
/**
* @internal You should not use this directly from another application
*
* @param int|null $offset
* @param int $value
* @return void
*
* @psalm-suppress MethodSignatureMismatch
* @psalm-suppress MixedArrayOffset
*/
#[ReturnTypeWillChange]
public function offsetSet($offset, $value)
{
if (!is_int($value)) {
throw new InvalidArgumentException('Expected an integer');
}
if (is_null($offset)) {
$this->values[] = $value;
} else {
$this->values[$offset] = $value;
}
}
/**
* @internal You should not use this directly from another application
*
* @param int $offset
* @return bool
*
* @psalm-suppress MethodSignatureMismatch
* @psalm-suppress MixedArrayOffset
*/
#[ReturnTypeWillChange]
public function offsetExists($offset)
{
return isset($this->values[$offset]);
}
/**
* @internal You should not use this directly from another application
*
* @param int $offset
* @return void
*
* @psalm-suppress MethodSignatureMismatch
* @psalm-suppress MixedArrayOffset
*/
#[ReturnTypeWillChange]
public function offsetUnset($offset)
{
unset($this->values[$offset]);
}
/**
* @internal You should not use this directly from another application
*
* @param int $offset
* @return int
*
* @psalm-suppress MethodSignatureMismatch
* @psalm-suppress MixedArrayOffset
*/
#[ReturnTypeWillChange]
public function offsetGet($offset)
{
if (!isset($this->values[$offset])) {
$this->values[$offset] = 0;
}
return (int) ($this->values[$offset]);
}
/**
* @internal You should not use this directly from another application
*
* @return array
*/
public function __debugInfo()
{
$out = array();
foreach ($this->values as $v) {
$out[] = str_pad(dechex($v), 8, '0', STR_PAD_LEFT);
}
return array(implode(', ', $out));
/*
return array(implode(', ', $this->values));
*/
}
/**
* @param int $cl low bit mask
* @param int $ch high bit mask
* @param int $s shift
* @param int $x index 1
* @param int $y index 2
* @return self
*/
public function swapN($cl, $ch, $s, $x, $y)
{
static $u32mask = ParagonIE_Sodium_Core_Util::U32_MAX;
$a = $this->values[$x] & $u32mask;
$b = $this->values[$y] & $u32mask;
// (x) = (a & cl) | ((b & cl) << (s));
$this->values[$x] = ($a & $cl) | ((($b & $cl) << $s) & $u32mask);
// (y) = ((a & ch) >> (s)) | (b & ch);
$this->values[$y] = ((($a & $ch) & $u32mask) >> $s) | ($b & $ch);
return $this;
}
/**
* @param int $x index 1
* @param int $y index 2
* @return self
*/
public function swap2($x, $y)
{
return $this->swapN(0x55555555, 0xAAAAAAAA, 1, $x, $y);
}
/**
* @param int $x index 1
* @param int $y index 2
* @return self
*/
public function swap4($x, $y)
{
return $this->swapN(0x33333333, 0xCCCCCCCC, 2, $x, $y);
}
/**
* @param int $x index 1
* @param int $y index 2
* @return self
*/
public function swap8($x, $y)
{
return $this->swapN(0x0F0F0F0F, 0xF0F0F0F0, 4, $x, $y);
}
/**
* @return self
*/
public function orthogonalize()
{
return $this
->swap2(0, 1)
->swap2(2, 3)
->swap2(4, 5)
->swap2(6, 7)
->swap4(0, 2)
->swap4(1, 3)
->swap4(4, 6)
->swap4(5, 7)
->swap8(0, 4)
->swap8(1, 5)
->swap8(2, 6)
->swap8(3, 7);
}
/**
* @return self
*/
public function shiftRows()
{
for ($i = 0; $i < 8; ++$i) {
$x = $this->values[$i] & ParagonIE_Sodium_Core_Util::U32_MAX;
$this->values[$i] = (
($x & 0x000000FF)
| (($x & 0x0000FC00) >> 2) | (($x & 0x00000300) << 6)
| (($x & 0x00F00000) >> 4) | (($x & 0x000F0000) << 4)
| (($x & 0xC0000000) >> 6) | (($x & 0x3F000000) << 2)
) & ParagonIE_Sodium_Core_Util::U32_MAX;
}
return $this;
}
/**
* @param int $x
* @return int
*/
public static function rotr16($x)
{
return (($x << 16) & ParagonIE_Sodium_Core_Util::U32_MAX) | ($x >> 16);
}
/**
* @return self
*/
public function mixColumns()
{
$q0 = $this->values[0];
$q1 = $this->values[1];
$q2 = $this->values[2];
$q3 = $this->values[3];
$q4 = $this->values[4];
$q5 = $this->values[5];
$q6 = $this->values[6];
$q7 = $this->values[7];
$r0 = (($q0 >> 8) | ($q0 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r1 = (($q1 >> 8) | ($q1 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r2 = (($q2 >> 8) | ($q2 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r3 = (($q3 >> 8) | ($q3 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r4 = (($q4 >> 8) | ($q4 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r5 = (($q5 >> 8) | ($q5 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r6 = (($q6 >> 8) | ($q6 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r7 = (($q7 >> 8) | ($q7 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$this->values[0] = $q7 ^ $r7 ^ $r0 ^ self::rotr16($q0 ^ $r0);
$this->values[1] = $q0 ^ $r0 ^ $q7 ^ $r7 ^ $r1 ^ self::rotr16($q1 ^ $r1);
$this->values[2] = $q1 ^ $r1 ^ $r2 ^ self::rotr16($q2 ^ $r2);
$this->values[3] = $q2 ^ $r2 ^ $q7 ^ $r7 ^ $r3 ^ self::rotr16($q3 ^ $r3);
$this->values[4] = $q3 ^ $r3 ^ $q7 ^ $r7 ^ $r4 ^ self::rotr16($q4 ^ $r4);
$this->values[5] = $q4 ^ $r4 ^ $r5 ^ self::rotr16($q5 ^ $r5);
$this->values[6] = $q5 ^ $r5 ^ $r6 ^ self::rotr16($q6 ^ $r6);
$this->values[7] = $q6 ^ $r6 ^ $r7 ^ self::rotr16($q7 ^ $r7);
return $this;
}
/**
* @return self
*/
public function inverseMixColumns()
{
$q0 = $this->values[0];
$q1 = $this->values[1];
$q2 = $this->values[2];
$q3 = $this->values[3];
$q4 = $this->values[4];
$q5 = $this->values[5];
$q6 = $this->values[6];
$q7 = $this->values[7];
$r0 = (($q0 >> 8) | ($q0 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r1 = (($q1 >> 8) | ($q1 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r2 = (($q2 >> 8) | ($q2 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r3 = (($q3 >> 8) | ($q3 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r4 = (($q4 >> 8) | ($q4 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r5 = (($q5 >> 8) | ($q5 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r6 = (($q6 >> 8) | ($q6 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$r7 = (($q7 >> 8) | ($q7 << 24)) & ParagonIE_Sodium_Core_Util::U32_MAX;
$this->values[0] = $q5 ^ $q6 ^ $q7 ^ $r0 ^ $r5 ^ $r7 ^ self::rotr16($q0 ^ $q5 ^ $q6 ^ $r0 ^ $r5);
$this->values[1] = $q0 ^ $q5 ^ $r0 ^ $r1 ^ $r5 ^ $r6 ^ $r7 ^ self::rotr16($q1 ^ $q5 ^ $q7 ^ $r1 ^ $r5 ^ $r6);
$this->values[2] = $q0 ^ $q1 ^ $q6 ^ $r1 ^ $r2 ^ $r6 ^ $r7 ^ self::rotr16($q0 ^ $q2 ^ $q6 ^ $r2 ^ $r6 ^ $r7);
$this->values[3] = $q0 ^ $q1 ^ $q2 ^ $q5 ^ $q6 ^ $r0 ^ $r2 ^ $r3 ^ $r5 ^ self::rotr16($q0 ^ $q1 ^ $q3 ^ $q5 ^ $q6 ^ $q7 ^ $r0 ^ $r3 ^ $r5 ^ $r7);
$this->values[4] = $q1 ^ $q2 ^ $q3 ^ $q5 ^ $r1 ^ $r3 ^ $r4 ^ $r5 ^ $r6 ^ $r7 ^ self::rotr16($q1 ^ $q2 ^ $q4 ^ $q5 ^ $q7 ^ $r1 ^ $r4 ^ $r5 ^ $r6);
$this->values[5] = $q2 ^ $q3 ^ $q4 ^ $q6 ^ $r2 ^ $r4 ^ $r5 ^ $r6 ^ $r7 ^ self::rotr16($q2 ^ $q3 ^ $q5 ^ $q6 ^ $r2 ^ $r5 ^ $r6 ^ $r7);
$this->values[6] = $q3 ^ $q4 ^ $q5 ^ $q7 ^ $r3 ^ $r5 ^ $r6 ^ $r7 ^ self::rotr16($q3 ^ $q4 ^ $q6 ^ $q7 ^ $r3 ^ $r6 ^ $r7);
$this->values[7] = $q4 ^ $q5 ^ $q6 ^ $r4 ^ $r6 ^ $r7 ^ self::rotr16($q4 ^ $q5 ^ $q7 ^ $r4 ^ $r7);
return $this;
}
/**
* @return self
*/
public function inverseShiftRows()
{
for ($i = 0; $i < 8; ++$i) {
$x = $this->values[$i];
$this->values[$i] = ParagonIE_Sodium_Core_Util::U32_MAX & (
($x & 0x000000FF)
| (($x & 0x00003F00) << 2) | (($x & 0x0000C000) >> 6)
| (($x & 0x000F0000) << 4) | (($x & 0x00F00000) >> 4)
| (($x & 0x03000000) << 6) | (($x & 0xFC000000) >> 2)
);
}
return $this;
}
}
في ظل التحول الرقمي المتسارع، أصبح التسويق الإلكتروني أحد أهم الأدوات التي تعتمد عليها المؤسسات والشركات لتحقيق الانتشار والوصول إلى جمهور أوسع.
في هذا الحوار التسجيلي، نسلّط الضوء على مفهوم التسويق الإلكتروني، أهميته في العصر الحديث، وكيف غيّر قواعد اللعبة في عالم المال والأعمال.
ال