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public static function ParagonIE_Sodium_Core32_Salsa20::core_salsa20 in Automatic Updates 8

Same name and namespace in other branches
  1. 7 vendor/paragonie/sodium_compat/src/Core32/Salsa20.php \ParagonIE_Sodium_Core32_Salsa20::core_salsa20()

Calculate an salsa20 hash of a single block

@internal You should not use this directly from another application

Parameters

string $in:

string $k:

string|null $c:

Return value

string

Throws

SodiumException

TypeError

2 calls to ParagonIE_Sodium_Core32_Salsa20::core_salsa20()
ParagonIE_Sodium_Core32_Salsa20::salsa20 in vendor/paragonie/sodium_compat/src/Core32/Salsa20.php
@internal You should not use this directly from another application
ParagonIE_Sodium_Core32_Salsa20::salsa20_xor_ic in vendor/paragonie/sodium_compat/src/Core32/Salsa20.php
@internal You should not use this directly from another application

File

vendor/paragonie/sodium_compat/src/Core32/Salsa20.php, line 26

Class

ParagonIE_Sodium_Core32_Salsa20
Class ParagonIE_Sodium_Core32_Salsa20

Code

public static function core_salsa20($in, $k, $c = null) {

  /**
   * @var ParagonIE_Sodium_Core32_Int32 $x0
   * @var ParagonIE_Sodium_Core32_Int32 $x1
   * @var ParagonIE_Sodium_Core32_Int32 $x2
   * @var ParagonIE_Sodium_Core32_Int32 $x3
   * @var ParagonIE_Sodium_Core32_Int32 $x4
   * @var ParagonIE_Sodium_Core32_Int32 $x5
   * @var ParagonIE_Sodium_Core32_Int32 $x6
   * @var ParagonIE_Sodium_Core32_Int32 $x7
   * @var ParagonIE_Sodium_Core32_Int32 $x8
   * @var ParagonIE_Sodium_Core32_Int32 $x9
   * @var ParagonIE_Sodium_Core32_Int32 $x10
   * @var ParagonIE_Sodium_Core32_Int32 $x11
   * @var ParagonIE_Sodium_Core32_Int32 $x12
   * @var ParagonIE_Sodium_Core32_Int32 $x13
   * @var ParagonIE_Sodium_Core32_Int32 $x14
   * @var ParagonIE_Sodium_Core32_Int32 $x15
   * @var ParagonIE_Sodium_Core32_Int32 $j0
   * @var ParagonIE_Sodium_Core32_Int32 $j1
   * @var ParagonIE_Sodium_Core32_Int32 $j2
   * @var ParagonIE_Sodium_Core32_Int32 $j3
   * @var ParagonIE_Sodium_Core32_Int32 $j4
   * @var ParagonIE_Sodium_Core32_Int32 $j5
   * @var ParagonIE_Sodium_Core32_Int32 $j6
   * @var ParagonIE_Sodium_Core32_Int32 $j7
   * @var ParagonIE_Sodium_Core32_Int32 $j8
   * @var ParagonIE_Sodium_Core32_Int32 $j9
   * @var ParagonIE_Sodium_Core32_Int32 $j10
   * @var ParagonIE_Sodium_Core32_Int32 $j11
   * @var ParagonIE_Sodium_Core32_Int32 $j12
   * @var ParagonIE_Sodium_Core32_Int32 $j13
   * @var ParagonIE_Sodium_Core32_Int32 $j14
   * @var ParagonIE_Sodium_Core32_Int32 $j15
   */
  if (self::strlen($k) < 32) {
    throw new RangeException('Key must be 32 bytes long');
  }
  if ($c === null) {
    $x0 = new ParagonIE_Sodium_Core32_Int32(array(
      0x6170,
      0x7865,
    ));
    $x5 = new ParagonIE_Sodium_Core32_Int32(array(
      0x3320,
      0x646e,
    ));
    $x10 = new ParagonIE_Sodium_Core32_Int32(array(
      0x7962,
      0x2d32,
    ));
    $x15 = new ParagonIE_Sodium_Core32_Int32(array(
      0x6b20,
      0x6574,
    ));
  }
  else {
    $x0 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 0, 4));
    $x5 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 4, 4));
    $x10 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 8, 4));
    $x15 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 12, 4));
  }
  $x1 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 0, 4));
  $x2 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 4, 4));
  $x3 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 8, 4));
  $x4 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 12, 4));
  $x6 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 0, 4));
  $x7 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 4, 4));
  $x8 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 8, 4));
  $x9 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 12, 4));
  $x11 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 16, 4));
  $x12 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 20, 4));
  $x13 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 24, 4));
  $x14 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 28, 4));
  $j0 = clone $x0;
  $j1 = clone $x1;
  $j2 = clone $x2;
  $j3 = clone $x3;
  $j4 = clone $x4;
  $j5 = clone $x5;
  $j6 = clone $x6;
  $j7 = clone $x7;
  $j8 = clone $x8;
  $j9 = clone $x9;
  $j10 = clone $x10;
  $j11 = clone $x11;
  $j12 = clone $x12;
  $j13 = clone $x13;
  $j14 = clone $x14;
  $j15 = clone $x15;
  for ($i = self::ROUNDS; $i > 0; $i -= 2) {
    $x4 = $x4
      ->xorInt32($x0
      ->addInt32($x12)
      ->rotateLeft(7));
    $x8 = $x8
      ->xorInt32($x4
      ->addInt32($x0)
      ->rotateLeft(9));
    $x12 = $x12
      ->xorInt32($x8
      ->addInt32($x4)
      ->rotateLeft(13));
    $x0 = $x0
      ->xorInt32($x12
      ->addInt32($x8)
      ->rotateLeft(18));
    $x9 = $x9
      ->xorInt32($x5
      ->addInt32($x1)
      ->rotateLeft(7));
    $x13 = $x13
      ->xorInt32($x9
      ->addInt32($x5)
      ->rotateLeft(9));
    $x1 = $x1
      ->xorInt32($x13
      ->addInt32($x9)
      ->rotateLeft(13));
    $x5 = $x5
      ->xorInt32($x1
      ->addInt32($x13)
      ->rotateLeft(18));
    $x14 = $x14
      ->xorInt32($x10
      ->addInt32($x6)
      ->rotateLeft(7));
    $x2 = $x2
      ->xorInt32($x14
      ->addInt32($x10)
      ->rotateLeft(9));
    $x6 = $x6
      ->xorInt32($x2
      ->addInt32($x14)
      ->rotateLeft(13));
    $x10 = $x10
      ->xorInt32($x6
      ->addInt32($x2)
      ->rotateLeft(18));
    $x3 = $x3
      ->xorInt32($x15
      ->addInt32($x11)
      ->rotateLeft(7));
    $x7 = $x7
      ->xorInt32($x3
      ->addInt32($x15)
      ->rotateLeft(9));
    $x11 = $x11
      ->xorInt32($x7
      ->addInt32($x3)
      ->rotateLeft(13));
    $x15 = $x15
      ->xorInt32($x11
      ->addInt32($x7)
      ->rotateLeft(18));
    $x1 = $x1
      ->xorInt32($x0
      ->addInt32($x3)
      ->rotateLeft(7));
    $x2 = $x2
      ->xorInt32($x1
      ->addInt32($x0)
      ->rotateLeft(9));
    $x3 = $x3
      ->xorInt32($x2
      ->addInt32($x1)
      ->rotateLeft(13));
    $x0 = $x0
      ->xorInt32($x3
      ->addInt32($x2)
      ->rotateLeft(18));
    $x6 = $x6
      ->xorInt32($x5
      ->addInt32($x4)
      ->rotateLeft(7));
    $x7 = $x7
      ->xorInt32($x6
      ->addInt32($x5)
      ->rotateLeft(9));
    $x4 = $x4
      ->xorInt32($x7
      ->addInt32($x6)
      ->rotateLeft(13));
    $x5 = $x5
      ->xorInt32($x4
      ->addInt32($x7)
      ->rotateLeft(18));
    $x11 = $x11
      ->xorInt32($x10
      ->addInt32($x9)
      ->rotateLeft(7));
    $x8 = $x8
      ->xorInt32($x11
      ->addInt32($x10)
      ->rotateLeft(9));
    $x9 = $x9
      ->xorInt32($x8
      ->addInt32($x11)
      ->rotateLeft(13));
    $x10 = $x10
      ->xorInt32($x9
      ->addInt32($x8)
      ->rotateLeft(18));
    $x12 = $x12
      ->xorInt32($x15
      ->addInt32($x14)
      ->rotateLeft(7));
    $x13 = $x13
      ->xorInt32($x12
      ->addInt32($x15)
      ->rotateLeft(9));
    $x14 = $x14
      ->xorInt32($x13
      ->addInt32($x12)
      ->rotateLeft(13));
    $x15 = $x15
      ->xorInt32($x14
      ->addInt32($x13)
      ->rotateLeft(18));
  }
  $x0 = $x0
    ->addInt32($j0);
  $x1 = $x1
    ->addInt32($j1);
  $x2 = $x2
    ->addInt32($j2);
  $x3 = $x3
    ->addInt32($j3);
  $x4 = $x4
    ->addInt32($j4);
  $x5 = $x5
    ->addInt32($j5);
  $x6 = $x6
    ->addInt32($j6);
  $x7 = $x7
    ->addInt32($j7);
  $x8 = $x8
    ->addInt32($j8);
  $x9 = $x9
    ->addInt32($j9);
  $x10 = $x10
    ->addInt32($j10);
  $x11 = $x11
    ->addInt32($j11);
  $x12 = $x12
    ->addInt32($j12);
  $x13 = $x13
    ->addInt32($j13);
  $x14 = $x14
    ->addInt32($j14);
  $x15 = $x15
    ->addInt32($j15);
  return $x0
    ->toReverseString() . $x1
    ->toReverseString() . $x2
    ->toReverseString() . $x3
    ->toReverseString() . $x4
    ->toReverseString() . $x5
    ->toReverseString() . $x6
    ->toReverseString() . $x7
    ->toReverseString() . $x8
    ->toReverseString() . $x9
    ->toReverseString() . $x10
    ->toReverseString() . $x11
    ->toReverseString() . $x12
    ->toReverseString() . $x13
    ->toReverseString() . $x14
    ->toReverseString() . $x15
    ->toReverseString();
}