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<?php

[0] Fix | Delete

[1] Fix | Delete

/**

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* Class ParagonIE_Sodium_Core32_Int64

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* Encapsulates a 64-bit integer.

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* These are immutable. It always returns a new instance.

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class ParagonIE_Sodium_Core32_Int64

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{

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/**

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* @var array<int, int> - four 16-bit integers

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public $limbs = array(0, 0, 0, 0);

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/**

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* @var int

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public $overflow = 0;

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/**

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* @var bool

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public $unsignedInt = false;

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/**

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* ParagonIE_Sodium_Core32_Int64 constructor.

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* @param array $array

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* @param bool $unsignedInt

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public function __construct($array = array(0, 0, 0, 0), $unsignedInt = false)

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{

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$this->limbs = array(

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(int) $array[0],

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(int) $array[1],

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(int) $array[2],

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(int) $array[3]

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);

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$this->overflow = 0;

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$this->unsignedInt = $unsignedInt;

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}

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/**

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* Adds two int64 objects

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* @param ParagonIE_Sodium_Core32_Int64 $addend

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* @return ParagonIE_Sodium_Core32_Int64

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public function addInt64(ParagonIE_Sodium_Core32_Int64 $addend)

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{

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$i0 = $this->limbs[0];

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$i1 = $this->limbs[1];

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$i2 = $this->limbs[2];

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$i3 = $this->limbs[3];

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$j0 = $addend->limbs[0];

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$j1 = $addend->limbs[1];

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$j2 = $addend->limbs[2];

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$j3 = $addend->limbs[3];

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$r3 = $i3 + ($j3 & 0xffff);

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$carry = $r3 >> 16;

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$r2 = $i2 + ($j2 & 0xffff) + $carry;

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$carry = $r2 >> 16;

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$r1 = $i1 + ($j1 & 0xffff) + $carry;

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$carry = $r1 >> 16;

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$r0 = $i0 + ($j0 & 0xffff) + $carry;

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$carry = $r0 >> 16;

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$r0 &= 0xffff;

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$r1 &= 0xffff;

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$r2 &= 0xffff;

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$r3 &= 0xffff;

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$return = new ParagonIE_Sodium_Core32_Int64(

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array($r0, $r1, $r2, $r3)

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);

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$return->overflow = $carry;

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$return->unsignedInt = $this->unsignedInt;

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return $return;

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}

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/**

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* Adds a normal integer to an int64 object

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* @param int $int

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* @return ParagonIE_Sodium_Core32_Int64

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* @throws SodiumException

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* @throws TypeError

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public function addInt($int)

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{

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ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);

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/** @var int $int */

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$int = (int) $int;

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$i0 = $this->limbs[0];

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$i1 = $this->limbs[1];

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$i2 = $this->limbs[2];

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$i3 = $this->limbs[3];

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$r3 = $i3 + ($int & 0xffff);

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$carry = $r3 >> 16;

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$r2 = $i2 + (($int >> 16) & 0xffff) + $carry;

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$carry = $r2 >> 16;

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$r1 = $i1 + $carry;

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$carry = $r1 >> 16;

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$r0 = $i0 + $carry;

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$carry = $r0 >> 16;

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$r0 &= 0xffff;

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$r1 &= 0xffff;

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$r2 &= 0xffff;

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$r3 &= 0xffff;

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$return = new ParagonIE_Sodium_Core32_Int64(

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array($r0, $r1, $r2, $r3)

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);

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$return->overflow = $carry;

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$return->unsignedInt = $this->unsignedInt;

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return $return;

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}

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/**

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* @param int $b

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* @return int

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public function compareInt($b = 0)

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{

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$gt = 0;

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$eq = 1;

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$i = 4;

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$j = 0;

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while ($i > 0) {

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--$i;

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/** @var int $x1 */

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$x1 = $this->limbs[$i];

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/** @var int $x2 */

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$x2 = ($b >> ($j << 4)) & 0xffff;

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/** int */

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$gt |= (($x2 - $x1) >> 8) & $eq;

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/** int */

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$eq &= (($x2 ^ $x1) - 1) >> 8;

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}

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return ($gt + $gt - $eq) + 1;

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}

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[152] Fix | Delete

/**

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* @param int $b

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* @return bool

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public function isGreaterThan($b = 0)

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{

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return $this->compareInt($b) > 0;

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}

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[161] Fix | Delete

/**

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* @param int $b

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* @return bool

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public function isLessThanInt($b = 0)

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{

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return $this->compareInt($b) < 0;

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}

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[170] Fix | Delete

/**

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* @param int $hi

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* @param int $lo

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* @return ParagonIE_Sodium_Core32_Int64

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public function mask64($hi = 0, $lo = 0)

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{

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/** @var int $a */

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$a = ($hi >> 16) & 0xffff;

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/** @var int $b */

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$b = ($hi) & 0xffff;

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/** @var int $c */

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$c = ($lo >> 16) & 0xffff;

[183] Fix | Delete

/** @var int $d */

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$d = ($lo & 0xffff);

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return new ParagonIE_Sodium_Core32_Int64(

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array(

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$this->limbs[0] & $a,

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$this->limbs[1] & $b,

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$this->limbs[2] & $c,

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$this->limbs[3] & $d

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$this->unsignedInt

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);

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}

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/**

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* @param int $int

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* @param int $size

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* @return ParagonIE_Sodium_Core32_Int64

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* @throws SodiumException

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* @throws TypeError

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* @psalm-suppress MixedAssignment

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[204] Fix | Delete

public function mulInt($int = 0, $size = 0)

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{

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if (ParagonIE_Sodium_Compat::$fastMult) {

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return $this->mulIntFast($int);

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}

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ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);

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ParagonIE_Sodium_Core32_Util::declareScalarType($size, 'int', 2);

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/** @var int $int */

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$int = (int) $int;

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/** @var int $size */

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$size = (int) $size;

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if (!$size) {

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$size = 63;

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}

[219] Fix | Delete

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$a = clone $this;

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$return = new ParagonIE_Sodium_Core32_Int64();

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$return->unsignedInt = $this->unsignedInt;

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[224] Fix | Delete

// Initialize:

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$ret0 = 0;

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$ret1 = 0;

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$ret2 = 0;

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$ret3 = 0;

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$a0 = $a->limbs[0];

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$a1 = $a->limbs[1];

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$a2 = $a->limbs[2];

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$a3 = $a->limbs[3];

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[234] Fix | Delete

/** @var int $size */

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/** @var int $i */

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for ($i = $size; $i >= 0; --$i) {

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$mask = -($int & 1);

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$x0 = $a0 & $mask;

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$x1 = $a1 & $mask;

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$x2 = $a2 & $mask;

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$x3 = $a3 & $mask;

[242] Fix | Delete

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$ret3 += $x3;

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$c = $ret3 >> 16;

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$ret2 += $x2 + $c;

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$c = $ret2 >> 16;

[248] Fix | Delete

[249] Fix | Delete

$ret1 += $x1 + $c;

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$c = $ret1 >> 16;

[251] Fix | Delete

[252] Fix | Delete

$ret0 += $x0 + $c;

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[254] Fix | Delete

$ret0 &= 0xffff;

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$ret1 &= 0xffff;

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$ret2 &= 0xffff;

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$ret3 &= 0xffff;

[258] Fix | Delete

[259] Fix | Delete

$a3 = $a3 << 1;

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$x3 = $a3 >> 16;

[261] Fix | Delete

$a2 = ($a2 << 1) | $x3;

[262] Fix | Delete

$x2 = $a2 >> 16;

[263] Fix | Delete

$a1 = ($a1 << 1) | $x2;

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$x1 = $a1 >> 16;

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$a0 = ($a0 << 1) | $x1;

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$a0 &= 0xffff;

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$a1 &= 0xffff;

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$a2 &= 0xffff;

[269] Fix | Delete

$a3 &= 0xffff;

[270] Fix | Delete

[271] Fix | Delete

$int >>= 1;

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}

[273] Fix | Delete

$return->limbs[0] = $ret0;

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$return->limbs[1] = $ret1;

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$return->limbs[2] = $ret2;

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$return->limbs[3] = $ret3;

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return $return;

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}

[279] Fix | Delete

[280] Fix | Delete

/**

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* @param ParagonIE_Sodium_Core32_Int64 $A

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* @param ParagonIE_Sodium_Core32_Int64 $B

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* @return array<int, ParagonIE_Sodium_Core32_Int64>

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* @throws SodiumException

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* @throws TypeError

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* @psalm-suppress MixedInferredReturnType

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[288] Fix | Delete

public static function ctSelect(

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ParagonIE_Sodium_Core32_Int64 $A,

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ParagonIE_Sodium_Core32_Int64 $B

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) {

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$a = clone $A;

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$b = clone $B;

[294] Fix | Delete

/** @var int $aNeg */

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$aNeg = ($a->limbs[0] >> 15) & 1;

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/** @var int $bNeg */

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$bNeg = ($b->limbs[0] >> 15) & 1;

[298] Fix | Delete

/** @var int $m */

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$m = (-($aNeg & $bNeg)) | 1;

[300] Fix | Delete

/** @var int $swap */

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$swap = $bNeg & ~$aNeg;

[302] Fix | Delete

/** @var int $d */

[303] Fix | Delete

$d = -$swap;

[304] Fix | Delete

[305] Fix | Delete

[306] Fix | Delete

if ($bNeg && !$aNeg) {

[307] Fix | Delete

$a = clone $int;

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$b = clone $this;

[309] Fix | Delete

} elseif($bNeg && $aNeg) {

[310] Fix | Delete

$a = $this->mulInt(-1);

[311] Fix | Delete

$b = $int->mulInt(-1);

[312] Fix | Delete

}

[313] Fix | Delete

[314] Fix | Delete

$x = $a->xorInt64($b)->mask64($d, $d);

[315] Fix | Delete

return array(

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$a->xorInt64($x)->mulInt($m),

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$b->xorInt64($x)->mulInt($m)

[318] Fix | Delete

);

[319] Fix | Delete

}

[320] Fix | Delete

[321] Fix | Delete

/**

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* @param array<int, int> $a

[323] Fix | Delete

* @param array<int, int> $b

[324] Fix | Delete

* @param int $baseLog2

[325] Fix | Delete

* @return array<int, int>

[326] Fix | Delete

[327] Fix | Delete

public function multiplyLong(array $a, array $b, $baseLog2 = 16)

[328] Fix | Delete

{

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$a_l = count($a);

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$b_l = count($b);

[331] Fix | Delete

/** @var array<int, int> $r */

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$r = array_fill(0, $a_l + $b_l + 1, 0);

[333] Fix | Delete

$base = 1 << $baseLog2;

[334] Fix | Delete

for ($i = 0; $i < $a_l; ++$i) {

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$a_i = $a[$i];

[336] Fix | Delete

for ($j = 0; $j < $a_l; ++$j) {

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$b_j = $b[$j];

[338] Fix | Delete

$product = (($a_i * $b_j) + $r[$i + $j]);

[339] Fix | Delete

$carry = (((int) $product >> $baseLog2) & 0xffff);

[340] Fix | Delete

$r[$i + $j] = ((int) $product - (int) ($carry * $base)) & 0xffff;

[341] Fix | Delete

$r[$i + $j + 1] += $carry;

[342] Fix | Delete

}

[343] Fix | Delete

}

[344] Fix | Delete

return array_slice($r, 0, 5);

[345] Fix | Delete

}

[346] Fix | Delete

[347] Fix | Delete

/**

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* @param int $int

[349] Fix | Delete

* @return ParagonIE_Sodium_Core32_Int64

[350] Fix | Delete

[351] Fix | Delete

public function mulIntFast($int)

[352] Fix | Delete

{

[353] Fix | Delete

// Handle negative numbers

[354] Fix | Delete

$aNeg = ($this->limbs[0] >> 15) & 1;

[355] Fix | Delete

$bNeg = ($int >> 31) & 1;

[356] Fix | Delete

$a = array_reverse($this->limbs);

[357] Fix | Delete

$b = array(

[358] Fix | Delete

$int & 0xffff,

[359] Fix | Delete

($int >> 16) & 0xffff,

[360] Fix | Delete

-$bNeg & 0xffff,

[361] Fix | Delete

-$bNeg & 0xffff

[362] Fix | Delete

);

[363] Fix | Delete

if ($aNeg) {

[364] Fix | Delete

for ($i = 0; $i < 4; ++$i) {

[365] Fix | Delete

$a[$i] = ($a[$i] ^ 0xffff) & 0xffff;

[366] Fix | Delete

}

[367] Fix | Delete

++$a[0];

[368] Fix | Delete

}

[369] Fix | Delete

if ($bNeg) {

[370] Fix | Delete

for ($i = 0; $i < 4; ++$i) {

[371] Fix | Delete

$b[$i] = ($b[$i] ^ 0xffff) & 0xffff;

[372] Fix | Delete

}

[373] Fix | Delete

++$b[0];

[374] Fix | Delete

}

[375] Fix | Delete

// Multiply

[376] Fix | Delete

$res = $this->multiplyLong($a, $b);

[377] Fix | Delete

[378] Fix | Delete

// Re-apply negation to results

[379] Fix | Delete

if ($aNeg !== $bNeg) {

[380] Fix | Delete

for ($i = 0; $i < 4; ++$i) {

[381] Fix | Delete

$res[$i] = (0xffff ^ $res[$i]) & 0xffff;

[382] Fix | Delete

}

[383] Fix | Delete

// Handle integer overflow

[384] Fix | Delete

$c = 1;

[385] Fix | Delete

for ($i = 0; $i < 4; ++$i) {

[386] Fix | Delete

$res[$i] += $c;

[387] Fix | Delete

$c = $res[$i] >> 16;

[388] Fix | Delete

$res[$i] &= 0xffff;

[389] Fix | Delete

}

[390] Fix | Delete

}

[391] Fix | Delete

[392] Fix | Delete

// Return our values

[393] Fix | Delete

$return = new ParagonIE_Sodium_Core32_Int64();

[394] Fix | Delete

$return->limbs = array(

[395] Fix | Delete

$res[3] & 0xffff,

[396] Fix | Delete

$res[2] & 0xffff,

[397] Fix | Delete

$res[1] & 0xffff,

[398] Fix | Delete

$res[0] & 0xffff

[399] Fix | Delete

);

[400] Fix | Delete

if (count($res) > 4) {

[401] Fix | Delete

$return->overflow = $res[4] & 0xffff;

[402] Fix | Delete

}

[403] Fix | Delete

$return->unsignedInt = $this->unsignedInt;

[404] Fix | Delete

return $return;

[405] Fix | Delete

}

[406] Fix | Delete

[407] Fix | Delete

/**

[408] Fix | Delete

* @param ParagonIE_Sodium_Core32_Int64 $right

[409] Fix | Delete

* @return ParagonIE_Sodium_Core32_Int64

[410] Fix | Delete

[411] Fix | Delete

public function mulInt64Fast(ParagonIE_Sodium_Core32_Int64 $right)

[412] Fix | Delete

{

[413] Fix | Delete

$aNeg = ($this->limbs[0] >> 15) & 1;

[414] Fix | Delete

$bNeg = ($right->limbs[0] >> 15) & 1;

[415] Fix | Delete

[416] Fix | Delete

$a = array_reverse($this->limbs);

[417] Fix | Delete

$b = array_reverse($right->limbs);

[418] Fix | Delete

if ($aNeg) {

[419] Fix | Delete

for ($i = 0; $i < 4; ++$i) {

[420] Fix | Delete

$a[$i] = ($a[$i] ^ 0xffff) & 0xffff;

[421] Fix | Delete

}

[422] Fix | Delete

++$a[0];

[423] Fix | Delete

}

[424] Fix | Delete

if ($bNeg) {

[425] Fix | Delete

for ($i = 0; $i < 4; ++$i) {

[426] Fix | Delete

$b[$i] = ($b[$i] ^ 0xffff) & 0xffff;

[427] Fix | Delete

}

[428] Fix | Delete

++$b[0];

[429] Fix | Delete

}

[430] Fix | Delete

$res = $this->multiplyLong($a, $b);

[431] Fix | Delete

if ($aNeg !== $bNeg) {

[432] Fix | Delete

if ($aNeg !== $bNeg) {

[433] Fix | Delete

for ($i = 0; $i < 4; ++$i) {

[434] Fix | Delete

$res[$i] = ($res[$i] ^ 0xffff) & 0xffff;

[435] Fix | Delete

}

[436] Fix | Delete

$c = 1;

[437] Fix | Delete

for ($i = 0; $i < 4; ++$i) {

[438] Fix | Delete

$res[$i] += $c;

[439] Fix | Delete

$c = $res[$i] >> 16;

[440] Fix | Delete

$res[$i] &= 0xffff;

[441] Fix | Delete

}

[442] Fix | Delete

}

[443] Fix | Delete

}

[444] Fix | Delete

$return = new ParagonIE_Sodium_Core32_Int64();

[445] Fix | Delete

$return->limbs = array(

[446] Fix | Delete

$res[3] & 0xffff,

[447] Fix | Delete

$res[2] & 0xffff,

[448] Fix | Delete

$res[1] & 0xffff,

[449] Fix | Delete

$res[0] & 0xffff

[450] Fix | Delete

);

[451] Fix | Delete

if (count($res) > 4) {

[452] Fix | Delete

$return->overflow = $res[4];

[453] Fix | Delete

}

[454] Fix | Delete

return $return;

[455] Fix | Delete

}

[456] Fix | Delete

[457] Fix | Delete

/**

[458] Fix | Delete

* @param ParagonIE_Sodium_Core32_Int64 $int

[459] Fix | Delete

* @param int $size

[460] Fix | Delete

* @return ParagonIE_Sodium_Core32_Int64

[461] Fix | Delete

* @throws SodiumException

[462] Fix | Delete

* @throws TypeError

[463] Fix | Delete

* @psalm-suppress MixedAssignment

[464] Fix | Delete

[465] Fix | Delete

public function mulInt64(ParagonIE_Sodium_Core32_Int64 $int, $size = 0)

[466] Fix | Delete

{

[467] Fix | Delete

if (ParagonIE_Sodium_Compat::$fastMult) {

[468] Fix | Delete

return $this->mulInt64Fast($int);

[469] Fix | Delete

}

[470] Fix | Delete

ParagonIE_Sodium_Core32_Util::declareScalarType($size, 'int', 2);

[471] Fix | Delete

if (!$size) {

[472] Fix | Delete

$size = 63;

[473] Fix | Delete

}

[474] Fix | Delete

list($a, $b) = self::ctSelect($this, $int);

[475] Fix | Delete

[476] Fix | Delete

$return = new ParagonIE_Sodium_Core32_Int64();

[477] Fix | Delete

$return->unsignedInt = $this->unsignedInt;

[478] Fix | Delete

[479] Fix | Delete

// Initialize:

[480] Fix | Delete

$ret0 = 0;

[481] Fix | Delete

$ret1 = 0;

[482] Fix | Delete

$ret2 = 0;

[483] Fix | Delete

$ret3 = 0;

[484] Fix | Delete

$a0 = $a->limbs[0];

[485] Fix | Delete

$a1 = $a->limbs[1];

[486] Fix | Delete

$a2 = $a->limbs[2];

[487] Fix | Delete

$a3 = $a->limbs[3];

[488] Fix | Delete

$b0 = $b->limbs[0];

[489] Fix | Delete

$b1 = $b->limbs[1];

[490] Fix | Delete

$b2 = $b->limbs[2];

[491] Fix | Delete

$b3 = $b->limbs[3];

[492] Fix | Delete

[493] Fix | Delete

/** @var int $size */

[494] Fix | Delete

/** @var int $i */

[495] Fix | Delete

for ($i = (int) $size; $i >= 0; --$i) {

[496] Fix | Delete

$mask = -($b3 & 1);

[497] Fix | Delete

$x0 = $a0 & $mask;

[498] Fix | Delete

$x1 = $a1 & $mask;

[499] Fix | Delete

12 3