diff options
Diffstat (limited to '')
| -rw-r--r-- | vendor/paragonie/sodium_compat/src/Core32/HChaCha20.php | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/vendor/paragonie/sodium_compat/src/Core32/HChaCha20.php b/vendor/paragonie/sodium_compat/src/Core32/HChaCha20.php new file mode 100644 index 0000000..551d995 --- /dev/null +++ b/vendor/paragonie/sodium_compat/src/Core32/HChaCha20.php @@ -0,0 +1,127 @@ +<?php + +if (class_exists('ParagonIE_Sodium_Core32_HChaCha20', false)) { + return; +} + +/** + * Class ParagonIE_Sodium_Core_HChaCha20 + */ +class ParagonIE_Sodium_Core32_HChaCha20 extends ParagonIE_Sodium_Core32_ChaCha20 +{ + /** + * @param string $in + * @param string $key + * @param string|null $c + * @return string + * @throws SodiumException + * @throws TypeError + */ + public static function hChaCha20($in = '', $key = '', $c = null) + { + $ctx = array(); + + if ($c === null) { + $ctx[0] = new ParagonIE_Sodium_Core32_Int32(array(0x6170, 0x7865)); + $ctx[1] = new ParagonIE_Sodium_Core32_Int32(array(0x3320, 0x646e)); + $ctx[2] = new ParagonIE_Sodium_Core32_Int32(array(0x7962, 0x2d32)); + $ctx[3] = new ParagonIE_Sodium_Core32_Int32(array(0x6b20, 0x6574)); + } else { + $ctx[0] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 0, 4)); + $ctx[1] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 4, 4)); + $ctx[2] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 8, 4)); + $ctx[3] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 12, 4)); + } + $ctx[4] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 0, 4)); + $ctx[5] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 4, 4)); + $ctx[6] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 8, 4)); + $ctx[7] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 12, 4)); + $ctx[8] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 16, 4)); + $ctx[9] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 20, 4)); + $ctx[10] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 24, 4)); + $ctx[11] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 28, 4)); + $ctx[12] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 0, 4)); + $ctx[13] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 4, 4)); + $ctx[14] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 8, 4)); + $ctx[15] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 12, 4)); + + return self::hChaCha20Bytes($ctx); + } + + /** + * @param array $ctx + * @return string + * @throws SodiumException + * @throws TypeError + */ + protected static function hChaCha20Bytes(array $ctx) + { + /** @var ParagonIE_Sodium_Core32_Int32 $x0 */ + $x0 = $ctx[0]; + /** @var ParagonIE_Sodium_Core32_Int32 $x1 */ + $x1 = $ctx[1]; + /** @var ParagonIE_Sodium_Core32_Int32 $x2 */ + $x2 = $ctx[2]; + /** @var ParagonIE_Sodium_Core32_Int32 $x3 */ + $x3 = $ctx[3]; + /** @var ParagonIE_Sodium_Core32_Int32 $x4 */ + $x4 = $ctx[4]; + /** @var ParagonIE_Sodium_Core32_Int32 $x5 */ + $x5 = $ctx[5]; + /** @var ParagonIE_Sodium_Core32_Int32 $x6 */ + $x6 = $ctx[6]; + /** @var ParagonIE_Sodium_Core32_Int32 $x7 */ + $x7 = $ctx[7]; + /** @var ParagonIE_Sodium_Core32_Int32 $x8 */ + $x8 = $ctx[8]; + /** @var ParagonIE_Sodium_Core32_Int32 $x9 */ + $x9 = $ctx[9]; + /** @var ParagonIE_Sodium_Core32_Int32 $x10 */ + $x10 = $ctx[10]; + /** @var ParagonIE_Sodium_Core32_Int32 $x11 */ + $x11 = $ctx[11]; + /** @var ParagonIE_Sodium_Core32_Int32 $x12 */ + $x12 = $ctx[12]; + /** @var ParagonIE_Sodium_Core32_Int32 $x13 */ + $x13 = $ctx[13]; + /** @var ParagonIE_Sodium_Core32_Int32 $x14 */ + $x14 = $ctx[14]; + /** @var ParagonIE_Sodium_Core32_Int32 $x15 */ + $x15 = $ctx[15]; + + for ($i = 0; $i < 10; ++$i) { + # QUARTERROUND( x0, x4, x8, x12) + list($x0, $x4, $x8, $x12) = self::quarterRound($x0, $x4, $x8, $x12); + + # QUARTERROUND( x1, x5, x9, x13) + list($x1, $x5, $x9, $x13) = self::quarterRound($x1, $x5, $x9, $x13); + + # QUARTERROUND( x2, x6, x10, x14) + list($x2, $x6, $x10, $x14) = self::quarterRound($x2, $x6, $x10, $x14); + + # QUARTERROUND( x3, x7, x11, x15) + list($x3, $x7, $x11, $x15) = self::quarterRound($x3, $x7, $x11, $x15); + + # QUARTERROUND( x0, x5, x10, x15) + list($x0, $x5, $x10, $x15) = self::quarterRound($x0, $x5, $x10, $x15); + + # QUARTERROUND( x1, x6, x11, x12) + list($x1, $x6, $x11, $x12) = self::quarterRound($x1, $x6, $x11, $x12); + + # QUARTERROUND( x2, x7, x8, x13) + list($x2, $x7, $x8, $x13) = self::quarterRound($x2, $x7, $x8, $x13); + + # QUARTERROUND( x3, x4, x9, x14) + list($x3, $x4, $x9, $x14) = self::quarterRound($x3, $x4, $x9, $x14); + } + + return $x0->toReverseString() . + $x1->toReverseString() . + $x2->toReverseString() . + $x3->toReverseString() . + $x12->toReverseString() . + $x13->toReverseString() . + $x14->toReverseString() . + $x15->toReverseString(); + } +} |