HSalsa20.php (6941B)
1 <?php 2 3 if (class_exists('ParagonIE_Sodium_Core32_HSalsa20', false)) { 4 return; 5 } 6 7 /** 8 * Class ParagonIE_Sodium_Core32_HSalsa20 9 */ 10 abstract class ParagonIE_Sodium_Core32_HSalsa20 extends ParagonIE_Sodium_Core32_Salsa20 11 { 12 /** 13 * Calculate an hsalsa20 hash of a single block 14 * 15 * HSalsa20 doesn't have a counter and will never be used for more than 16 * one block (used to derive a subkey for xsalsa20). 17 * 18 * @internal You should not use this directly from another application 19 * 20 * @param string $in 21 * @param string $k 22 * @param string|null $c 23 * @return string 24 * @throws SodiumException 25 * @throws TypeError 26 */ 27 public static function hsalsa20($in, $k, $c = null) 28 { 29 /** 30 * @var ParagonIE_Sodium_Core32_Int32 $x0 31 * @var ParagonIE_Sodium_Core32_Int32 $x1 32 * @var ParagonIE_Sodium_Core32_Int32 $x2 33 * @var ParagonIE_Sodium_Core32_Int32 $x3 34 * @var ParagonIE_Sodium_Core32_Int32 $x4 35 * @var ParagonIE_Sodium_Core32_Int32 $x5 36 * @var ParagonIE_Sodium_Core32_Int32 $x6 37 * @var ParagonIE_Sodium_Core32_Int32 $x7 38 * @var ParagonIE_Sodium_Core32_Int32 $x8 39 * @var ParagonIE_Sodium_Core32_Int32 $x9 40 * @var ParagonIE_Sodium_Core32_Int32 $x10 41 * @var ParagonIE_Sodium_Core32_Int32 $x11 42 * @var ParagonIE_Sodium_Core32_Int32 $x12 43 * @var ParagonIE_Sodium_Core32_Int32 $x13 44 * @var ParagonIE_Sodium_Core32_Int32 $x14 45 * @var ParagonIE_Sodium_Core32_Int32 $x15 46 * @var ParagonIE_Sodium_Core32_Int32 $j0 47 * @var ParagonIE_Sodium_Core32_Int32 $j1 48 * @var ParagonIE_Sodium_Core32_Int32 $j2 49 * @var ParagonIE_Sodium_Core32_Int32 $j3 50 * @var ParagonIE_Sodium_Core32_Int32 $j4 51 * @var ParagonIE_Sodium_Core32_Int32 $j5 52 * @var ParagonIE_Sodium_Core32_Int32 $j6 53 * @var ParagonIE_Sodium_Core32_Int32 $j7 54 * @var ParagonIE_Sodium_Core32_Int32 $j8 55 * @var ParagonIE_Sodium_Core32_Int32 $j9 56 * @var ParagonIE_Sodium_Core32_Int32 $j10 57 * @var ParagonIE_Sodium_Core32_Int32 $j11 58 * @var ParagonIE_Sodium_Core32_Int32 $j12 59 * @var ParagonIE_Sodium_Core32_Int32 $j13 60 * @var ParagonIE_Sodium_Core32_Int32 $j14 61 * @var ParagonIE_Sodium_Core32_Int32 $j15 62 */ 63 if (self::strlen($k) < 32) { 64 throw new RangeException('Key must be 32 bytes long'); 65 } 66 if ($c === null) { 67 $x0 = new ParagonIE_Sodium_Core32_Int32(array(0x6170, 0x7865)); 68 $x5 = new ParagonIE_Sodium_Core32_Int32(array(0x3320, 0x646e)); 69 $x10 = new ParagonIE_Sodium_Core32_Int32(array(0x7962, 0x2d32)); 70 $x15 = new ParagonIE_Sodium_Core32_Int32(array(0x6b20, 0x6574)); 71 } else { 72 $x0 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 0, 4)); 73 $x5 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 4, 4)); 74 $x10 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 8, 4)); 75 $x15 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($c, 12, 4)); 76 } 77 $x1 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 0, 4)); 78 $x2 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 4, 4)); 79 $x3 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 8, 4)); 80 $x4 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 12, 4)); 81 $x6 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 0, 4)); 82 $x7 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 4, 4)); 83 $x8 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 8, 4)); 84 $x9 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($in, 12, 4)); 85 $x11 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 16, 4)); 86 $x12 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 20, 4)); 87 $x13 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 24, 4)); 88 $x14 = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($k, 28, 4)); 89 90 for ($i = self::ROUNDS; $i > 0; $i -= 2) { 91 $x4 = $x4->xorInt32($x0->addInt32($x12)->rotateLeft(7)); 92 $x8 = $x8->xorInt32($x4->addInt32($x0)->rotateLeft(9)); 93 $x12 = $x12->xorInt32($x8->addInt32($x4)->rotateLeft(13)); 94 $x0 = $x0->xorInt32($x12->addInt32($x8)->rotateLeft(18)); 95 96 $x9 = $x9->xorInt32($x5->addInt32($x1)->rotateLeft(7)); 97 $x13 = $x13->xorInt32($x9->addInt32($x5)->rotateLeft(9)); 98 $x1 = $x1->xorInt32($x13->addInt32($x9)->rotateLeft(13)); 99 $x5 = $x5->xorInt32($x1->addInt32($x13)->rotateLeft(18)); 100 101 $x14 = $x14->xorInt32($x10->addInt32($x6)->rotateLeft(7)); 102 $x2 = $x2->xorInt32($x14->addInt32($x10)->rotateLeft(9)); 103 $x6 = $x6->xorInt32($x2->addInt32($x14)->rotateLeft(13)); 104 $x10 = $x10->xorInt32($x6->addInt32($x2)->rotateLeft(18)); 105 106 $x3 = $x3->xorInt32($x15->addInt32($x11)->rotateLeft(7)); 107 $x7 = $x7->xorInt32($x3->addInt32($x15)->rotateLeft(9)); 108 $x11 = $x11->xorInt32($x7->addInt32($x3)->rotateLeft(13)); 109 $x15 = $x15->xorInt32($x11->addInt32($x7)->rotateLeft(18)); 110 111 $x1 = $x1->xorInt32($x0->addInt32($x3)->rotateLeft(7)); 112 $x2 = $x2->xorInt32($x1->addInt32($x0)->rotateLeft(9)); 113 $x3 = $x3->xorInt32($x2->addInt32($x1)->rotateLeft(13)); 114 $x0 = $x0->xorInt32($x3->addInt32($x2)->rotateLeft(18)); 115 116 $x6 = $x6->xorInt32($x5->addInt32($x4)->rotateLeft(7)); 117 $x7 = $x7->xorInt32($x6->addInt32($x5)->rotateLeft(9)); 118 $x4 = $x4->xorInt32($x7->addInt32($x6)->rotateLeft(13)); 119 $x5 = $x5->xorInt32($x4->addInt32($x7)->rotateLeft(18)); 120 121 $x11 = $x11->xorInt32($x10->addInt32($x9)->rotateLeft(7)); 122 $x8 = $x8->xorInt32($x11->addInt32($x10)->rotateLeft(9)); 123 $x9 = $x9->xorInt32($x8->addInt32($x11)->rotateLeft(13)); 124 $x10 = $x10->xorInt32($x9->addInt32($x8)->rotateLeft(18)); 125 126 $x12 = $x12->xorInt32($x15->addInt32($x14)->rotateLeft(7)); 127 $x13 = $x13->xorInt32($x12->addInt32($x15)->rotateLeft(9)); 128 $x14 = $x14->xorInt32($x13->addInt32($x12)->rotateLeft(13)); 129 $x15 = $x15->xorInt32($x14->addInt32($x13)->rotateLeft(18)); 130 } 131 132 return $x0->toReverseString() . 133 $x5->toReverseString() . 134 $x10->toReverseString() . 135 $x15->toReverseString() . 136 $x6->toReverseString() . 137 $x7->toReverseString() . 138 $x8->toReverseString() . 139 $x9->toReverseString(); 140 } 141 }