/home/kueuepay/public_html/vendor/paragonie/sodium_compat/src/Core32/Int64.php
<?php
/**
* Class ParagonIE_Sodium_Core32_Int64
*
* Encapsulates a 64-bit integer.
*
* These are immutable. It always returns a new instance.
*/
class ParagonIE_Sodium_Core32_Int64
{
/**
* @var array<int, int> - four 16-bit integers
*/
public $limbs = array(0, 0, 0, 0);
/**
* @var int
*/
public $overflow = 0;
/**
* @var bool
*/
public $unsignedInt = false;
/**
* ParagonIE_Sodium_Core32_Int64 constructor.
* @param array $array
* @param bool $unsignedInt
*/
public function __construct($array = array(0, 0, 0, 0), $unsignedInt = false)
{
$this->limbs = array(
(int) $array[0],
(int) $array[1],
(int) $array[2],
(int) $array[3]
);
$this->overflow = 0;
$this->unsignedInt = $unsignedInt;
}
/**
* Adds two int64 objects
*
* @param ParagonIE_Sodium_Core32_Int64 $addend
* @return ParagonIE_Sodium_Core32_Int64
*/
public function addInt64(ParagonIE_Sodium_Core32_Int64 $addend)
{
$i0 = $this->limbs[0];
$i1 = $this->limbs[1];
$i2 = $this->limbs[2];
$i3 = $this->limbs[3];
$j0 = $addend->limbs[0];
$j1 = $addend->limbs[1];
$j2 = $addend->limbs[2];
$j3 = $addend->limbs[3];
$r3 = $i3 + ($j3 & 0xffff);
$carry = $r3 >> 16;
$r2 = $i2 + ($j2 & 0xffff) + $carry;
$carry = $r2 >> 16;
$r1 = $i1 + ($j1 & 0xffff) + $carry;
$carry = $r1 >> 16;
$r0 = $i0 + ($j0 & 0xffff) + $carry;
$carry = $r0 >> 16;
$r0 &= 0xffff;
$r1 &= 0xffff;
$r2 &= 0xffff;
$r3 &= 0xffff;
$return = new ParagonIE_Sodium_Core32_Int64(
array($r0, $r1, $r2, $r3)
);
$return->overflow = $carry;
$return->unsignedInt = $this->unsignedInt;
return $return;
}
/**
* Adds a normal integer to an int64 object
*
* @param int $int
* @return ParagonIE_Sodium_Core32_Int64
* @throws SodiumException
* @throws TypeError
*/
public function addInt($int)
{
ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);
/** @var int $int */
$int = (int) $int;
$i0 = $this->limbs[0];
$i1 = $this->limbs[1];
$i2 = $this->limbs[2];
$i3 = $this->limbs[3];
$r3 = $i3 + ($int & 0xffff);
$carry = $r3 >> 16;
$r2 = $i2 + (($int >> 16) & 0xffff) + $carry;
$carry = $r2 >> 16;
$r1 = $i1 + $carry;
$carry = $r1 >> 16;
$r0 = $i0 + $carry;
$carry = $r0 >> 16;
$r0 &= 0xffff;
$r1 &= 0xffff;
$r2 &= 0xffff;
$r3 &= 0xffff;
$return = new ParagonIE_Sodium_Core32_Int64(
array($r0, $r1, $r2, $r3)
);
$return->overflow = $carry;
$return->unsignedInt = $this->unsignedInt;
return $return;
}
/**
* @param int $b
* @return int
*/
public function compareInt($b = 0)
{
$gt = 0;
$eq = 1;
$i = 4;
$j = 0;
while ($i > 0) {
--$i;
/** @var int $x1 */
$x1 = $this->limbs[$i];
/** @var int $x2 */
$x2 = ($b >> ($j << 4)) & 0xffff;
/** int */
$gt |= (($x2 - $x1) >> 8) & $eq;
/** int */
$eq &= (($x2 ^ $x1) - 1) >> 8;
}
return ($gt + $gt - $eq) + 1;
}
/**
* @param int $b
* @return bool
*/
public function isGreaterThan($b = 0)
{
return $this->compareInt($b) > 0;
}
/**
* @param int $b
* @return bool
*/
public function isLessThanInt($b = 0)
{
return $this->compareInt($b) < 0;
}
/**
* @param int $hi
* @param int $lo
* @return ParagonIE_Sodium_Core32_Int64
*/
public function mask64($hi = 0, $lo = 0)
{
/** @var int $a */
$a = ($hi >> 16) & 0xffff;
/** @var int $b */
$b = ($hi) & 0xffff;
/** @var int $c */
$c = ($lo >> 16) & 0xffff;
/** @var int $d */
$d = ($lo & 0xffff);
return new ParagonIE_Sodium_Core32_Int64(
array(
$this->limbs[0] & $a,
$this->limbs[1] & $b,
$this->limbs[2] & $c,
$this->limbs[3] & $d
),
$this->unsignedInt
);
}
/**
* @param int $int
* @param int $size
* @return ParagonIE_Sodium_Core32_Int64
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedAssignment
*/
public function mulInt($int = 0, $size = 0)
{
if (ParagonIE_Sodium_Compat::$fastMult) {
return $this->mulIntFast($int);
}
ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);
ParagonIE_Sodium_Core32_Util::declareScalarType($size, 'int', 2);
/** @var int $int */
$int = (int) $int;
/** @var int $size */
$size = (int) $size;
if (!$size) {
$size = 63;
}
$a = clone $this;
$return = new ParagonIE_Sodium_Core32_Int64();
$return->unsignedInt = $this->unsignedInt;
// Initialize:
$ret0 = 0;
$ret1 = 0;
$ret2 = 0;
$ret3 = 0;
$a0 = $a->limbs[0];
$a1 = $a->limbs[1];
$a2 = $a->limbs[2];
$a3 = $a->limbs[3];
/** @var int $size */
/** @var int $i */
for ($i = $size; $i >= 0; --$i) {
$mask = -($int & 1);
$x0 = $a0 & $mask;
$x1 = $a1 & $mask;
$x2 = $a2 & $mask;
$x3 = $a3 & $mask;
$ret3 += $x3;
$c = $ret3 >> 16;
$ret2 += $x2 + $c;
$c = $ret2 >> 16;
$ret1 += $x1 + $c;
$c = $ret1 >> 16;
$ret0 += $x0 + $c;
$ret0 &= 0xffff;
$ret1 &= 0xffff;
$ret2 &= 0xffff;
$ret3 &= 0xffff;
$a3 = $a3 << 1;
$x3 = $a3 >> 16;
$a2 = ($a2 << 1) | $x3;
$x2 = $a2 >> 16;
$a1 = ($a1 << 1) | $x2;
$x1 = $a1 >> 16;
$a0 = ($a0 << 1) | $x1;
$a0 &= 0xffff;
$a1 &= 0xffff;
$a2 &= 0xffff;
$a3 &= 0xffff;
$int >>= 1;
}
$return->limbs[0] = $ret0;
$return->limbs[1] = $ret1;
$return->limbs[2] = $ret2;
$return->limbs[3] = $ret3;
return $return;
}
/**
* @param ParagonIE_Sodium_Core32_Int64 $A
* @param ParagonIE_Sodium_Core32_Int64 $B
* @return array<int, ParagonIE_Sodium_Core32_Int64>
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedInferredReturnType
*/
public static function ctSelect(
ParagonIE_Sodium_Core32_Int64 $A,
ParagonIE_Sodium_Core32_Int64 $B
) {
$a = clone $A;
$b = clone $B;
/** @var int $aNeg */
$aNeg = ($a->limbs[0] >> 15) & 1;
/** @var int $bNeg */
$bNeg = ($b->limbs[0] >> 15) & 1;
/** @var int $m */
$m = (-($aNeg & $bNeg)) | 1;
/** @var int $swap */
$swap = $bNeg & ~$aNeg;
/** @var int $d */
$d = -$swap;
/*
if ($bNeg && !$aNeg) {
$a = clone $int;
$b = clone $this;
} elseif($bNeg && $aNeg) {
$a = $this->mulInt(-1);
$b = $int->mulInt(-1);
}
*/
$x = $a->xorInt64($b)->mask64($d, $d);
return array(
$a->xorInt64($x)->mulInt($m),
$b->xorInt64($x)->mulInt($m)
);
}
/**
* @param array<int, int> $a
* @param array<int, int> $b
* @param int $baseLog2
* @return array<int, int>
*/
public function multiplyLong(array $a, array $b, $baseLog2 = 16)
{
$a_l = count($a);
$b_l = count($b);
/** @var array<int, int> $r */
$r = array_fill(0, $a_l + $b_l + 1, 0);
$base = 1 << $baseLog2;
for ($i = 0; $i < $a_l; ++$i) {
$a_i = $a[$i];
for ($j = 0; $j < $a_l; ++$j) {
$b_j = $b[$j];
$product = (($a_i * $b_j) + $r[$i + $j]);
$carry = (((int) $product >> $baseLog2) & 0xffff);
$r[$i + $j] = ((int) $product - (int) ($carry * $base)) & 0xffff;
$r[$i + $j + 1] += $carry;
}
}
return array_slice($r, 0, 5);
}
/**
* @param int $int
* @return ParagonIE_Sodium_Core32_Int64
*/
public function mulIntFast($int)
{
// Handle negative numbers
$aNeg = ($this->limbs[0] >> 15) & 1;
$bNeg = ($int >> 31) & 1;
$a = array_reverse($this->limbs);
$b = array(
$int & 0xffff,
($int >> 16) & 0xffff,
-$bNeg & 0xffff,
-$bNeg & 0xffff
);
if ($aNeg) {
for ($i = 0; $i < 4; ++$i) {
$a[$i] = ($a[$i] ^ 0xffff) & 0xffff;
}
++$a[0];
}
if ($bNeg) {
for ($i = 0; $i < 4; ++$i) {
$b[$i] = ($b[$i] ^ 0xffff) & 0xffff;
}
++$b[0];
}
// Multiply
$res = $this->multiplyLong($a, $b);
// Re-apply negation to results
if ($aNeg !== $bNeg) {
for ($i = 0; $i < 4; ++$i) {
$res[$i] = (0xffff ^ $res[$i]) & 0xffff;
}
// Handle integer overflow
$c = 1;
for ($i = 0; $i < 4; ++$i) {
$res[$i] += $c;
$c = $res[$i] >> 16;
$res[$i] &= 0xffff;
}
}
// Return our values
$return = new ParagonIE_Sodium_Core32_Int64();
$return->limbs = array(
$res[3] & 0xffff,
$res[2] & 0xffff,
$res[1] & 0xffff,
$res[0] & 0xffff
);
if (count($res) > 4) {
$return->overflow = $res[4] & 0xffff;
}
$return->unsignedInt = $this->unsignedInt;
return $return;
}
/**
* @param ParagonIE_Sodium_Core32_Int64 $right
* @return ParagonIE_Sodium_Core32_Int64
*/
public function mulInt64Fast(ParagonIE_Sodium_Core32_Int64 $right)
{
$aNeg = ($this->limbs[0] >> 15) & 1;
$bNeg = ($right->limbs[0] >> 15) & 1;
$a = array_reverse($this->limbs);
$b = array_reverse($right->limbs);
if ($aNeg) {
for ($i = 0; $i < 4; ++$i) {
$a[$i] = ($a[$i] ^ 0xffff) & 0xffff;
}
++$a[0];
}
if ($bNeg) {
for ($i = 0; $i < 4; ++$i) {
$b[$i] = ($b[$i] ^ 0xffff) & 0xffff;
}
++$b[0];
}
$res = $this->multiplyLong($a, $b);
if ($aNeg !== $bNeg) {
if ($aNeg !== $bNeg) {
for ($i = 0; $i < 4; ++$i) {
$res[$i] = ($res[$i] ^ 0xffff) & 0xffff;
}
$c = 1;
for ($i = 0; $i < 4; ++$i) {
$res[$i] += $c;
$c = $res[$i] >> 16;
$res[$i] &= 0xffff;
}
}
}
$return = new ParagonIE_Sodium_Core32_Int64();
$return->limbs = array(
$res[3] & 0xffff,
$res[2] & 0xffff,
$res[1] & 0xffff,
$res[0] & 0xffff
);
if (count($res) > 4) {
$return->overflow = $res[4];
}
return $return;
}
/**
* @param ParagonIE_Sodium_Core32_Int64 $int
* @param int $size
* @return ParagonIE_Sodium_Core32_Int64
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedAssignment
*/
public function mulInt64(ParagonIE_Sodium_Core32_Int64 $int, $size = 0)
{
if (ParagonIE_Sodium_Compat::$fastMult) {
return $this->mulInt64Fast($int);
}
ParagonIE_Sodium_Core32_Util::declareScalarType($size, 'int', 2);
if (!$size) {
$size = 63;
}
list($a, $b) = self::ctSelect($this, $int);
$return = new ParagonIE_Sodium_Core32_Int64();
$return->unsignedInt = $this->unsignedInt;
// Initialize:
$ret0 = 0;
$ret1 = 0;
$ret2 = 0;
$ret3 = 0;
$a0 = $a->limbs[0];
$a1 = $a->limbs[1];
$a2 = $a->limbs[2];
$a3 = $a->limbs[3];
$b0 = $b->limbs[0];
$b1 = $b->limbs[1];
$b2 = $b->limbs[2];
$b3 = $b->limbs[3];
/** @var int $size */
/** @var int $i */
for ($i = (int) $size; $i >= 0; --$i) {
$mask = -($b3 & 1);
$x0 = $a0 & $mask;
$x1 = $a1 & $mask;
$x2 = $a2 & $mask;
$x3 = $a3 & $mask;
$ret3 += $x3;
$c = $ret3 >> 16;
$ret2 += $x2 + $c;
$c = $ret2 >> 16;
$ret1 += $x1 + $c;
$c = $ret1 >> 16;
$ret0 += $x0 + $c;
$ret0 &= 0xffff;
$ret1 &= 0xffff;
$ret2 &= 0xffff;
$ret3 &= 0xffff;
$a3 = $a3 << 1;
$x3 = $a3 >> 16;
$a2 = ($a2 << 1) | $x3;
$x2 = $a2 >> 16;
$a1 = ($a1 << 1) | $x2;
$x1 = $a1 >> 16;
$a0 = ($a0 << 1) | $x1;
$a0 &= 0xffff;
$a1 &= 0xffff;
$a2 &= 0xffff;
$a3 &= 0xffff;
$x0 = ($b0 & 1) << 16;
$x1 = ($b1 & 1) << 16;
$x2 = ($b2 & 1) << 16;
$b0 = ($b0 >> 1);
$b1 = (($b1 | $x0) >> 1);
$b2 = (($b2 | $x1) >> 1);
$b3 = (($b3 | $x2) >> 1);
$b0 &= 0xffff;
$b1 &= 0xffff;
$b2 &= 0xffff;
$b3 &= 0xffff;
}
$return->limbs[0] = $ret0;
$return->limbs[1] = $ret1;
$return->limbs[2] = $ret2;
$return->limbs[3] = $ret3;
return $return;
}
/**
* OR this 64-bit integer with another.
*
* @param ParagonIE_Sodium_Core32_Int64 $b
* @return ParagonIE_Sodium_Core32_Int64
*/
public function orInt64(ParagonIE_Sodium_Core32_Int64 $b)
{
$return = new ParagonIE_Sodium_Core32_Int64();
$return->unsignedInt = $this->unsignedInt;
$return->limbs = array(
(int) ($this->limbs[0] | $b->limbs[0]),
(int) ($this->limbs[1] | $b->limbs[1]),
(int) ($this->limbs[2] | $b->limbs[2]),
(int) ($this->limbs[3] | $b->limbs[3])
);
return $return;
}
/**
* @param int $c
* @return ParagonIE_Sodium_Core32_Int64
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArrayAccess
*/
public function rotateLeft($c = 0)
{
ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
/** @var int $c */
$c = (int) $c;
$return = new ParagonIE_Sodium_Core32_Int64();
$return->unsignedInt = $this->unsignedInt;
$c &= 63;
if ($c === 0) {
// NOP, but we want a copy.
$return->limbs = $this->limbs;
} else {
/** @var array<int, int> $limbs */
$limbs =& $return->limbs;
/** @var array<int, int> $myLimbs */
$myLimbs =& $this->limbs;
/** @var int $idx_shift */
$idx_shift = ($c >> 4) & 3;
/** @var int $sub_shift */
$sub_shift = $c & 15;
for ($i = 3; $i >= 0; --$i) {
/** @var int $j */
$j = ($i + $idx_shift) & 3;
/** @var int $k */
$k = ($i + $idx_shift + 1) & 3;
$limbs[$i] = (int) (
(
((int) ($myLimbs[$j]) << $sub_shift)
|
((int) ($myLimbs[$k]) >> (16 - $sub_shift))
) & 0xffff
);
}
}
return $return;
}
/**
* Rotate to the right
*
* @param int $c
* @return ParagonIE_Sodium_Core32_Int64
* @throws SodiumException
* @throws TypeError
* @psalm-suppress MixedArrayAccess
*/
public function rotateRight($c = 0)
{
ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
/** @var int $c */
$c = (int) $c;
/** @var ParagonIE_Sodium_Core32_Int64 $return */
$return = new ParagonIE_Sodium_Core32_Int64();
$return->unsignedInt = $this->unsignedInt;
$c &= 63;
/** @var int $c */
if ($c === 0) {
// NOP, but we want a copy.
$return->limbs = $this->limbs;
} else {
/** @var array<int, int> $limbs */
$limbs =& $return->limbs;
/** @var array<int, int> $myLimbs */
$myLimbs =& $this->limbs;
/** @var int $idx_shift */
$idx_shift = ($c >> 4) & 3;
/** @var int $sub_shift */
$sub_shift = $c & 15;
for ($i = 3; $i >= 0; --$i) {
/** @var int $j */
$j = ($i - $idx_shift) & 3;
/** @var int $k */
$k = ($i - $idx_shift - 1) & 3;
$limbs[$i] = (int) (
(
((int) ($myLimbs[$j]) >> (int) ($sub_shift))
|
((int) ($myLimbs[$k]) << (16 - (int) ($sub_shift)))
) & 0xffff
);
}
}
return $return;
}
/**
* @param int $c
* @return ParagonIE_Sodium_Core32_Int64
* @throws SodiumException
* @throws TypeError
*/
public function shiftLeft($c = 0)
{
ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
/** @var int $c */
$c = (int) $c;
$return = new ParagonIE_Sodium_Core32_Int64();
$return->unsignedInt = $this->unsignedInt;
$c &= 63;
if ($c >= 16) {
if ($c >= 48) {
$return->limbs = array(
$this->limbs[3], 0, 0, 0
);
} elseif ($c >= 32) {
$return->limbs = array(
$this->limbs[2], $this->limbs[3], 0, 0
);
} else {
$return->limbs = array(
$this->limbs[1], $this->limbs[2], $this->limbs[3], 0
);
}
return $return->shiftLeft($c & 15);
}
if ($c === 0) {
$return->limbs = $this->limbs;
} elseif ($c < 0) {
/** @var int $c */
return $this->shiftRight(-$c);
} else {
if (!is_int($c)) {
throw new TypeError();
}
/** @var int $carry */
$carry = 0;
for ($i = 3; $i >= 0; --$i) {
/** @var int $tmp */
$tmp = ($this->limbs[$i] << $c) | ($carry & 0xffff);
$return->limbs[$i] = (int) ($tmp & 0xffff);
/** @var int $carry */
$carry = $tmp >> 16;
}
}
return $return;
}
/**
* @param int $c
* @return ParagonIE_Sodium_Core32_Int64
* @throws SodiumException
* @throws TypeError
*/
public function shiftRight($c = 0)
{
ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
$c = (int) $c;
/** @var int $c */
$return = new ParagonIE_Sodium_Core32_Int64();
$return->unsignedInt = $this->unsignedInt;
$c &= 63;
$negative = -(($this->limbs[0] >> 15) & 1);
if ($c >= 16) {
if ($c >= 48) {
$return->limbs = array(
(int) ($negative & 0xffff),
(int) ($negative & 0xffff),
(int) ($negative & 0xffff),
(int) $this->limbs[0]
);
} elseif ($c >= 32) {
$return->limbs = array(
(int) ($negative & 0xffff),
(int) ($negative & 0xffff),
(int) $this->limbs[0],
(int) $this->limbs[1]
);
} else {
$return->limbs = array(
(int) ($negative & 0xffff),
(int) $this->limbs[0],
(int) $this->limbs[1],
(int) $this->limbs[2]
);
}
return $return->shiftRight($c & 15);
}
if ($c === 0) {
$return->limbs = $this->limbs;
} elseif ($c < 0) {
return $this->shiftLeft(-$c);
} else {
if (!is_int($c)) {
throw new TypeError();
}
/** @var int $carryRight */
$carryRight = ($negative & 0xffff);
$mask = (int) (((1 << ($c + 1)) - 1) & 0xffff);
for ($i = 0; $i < 4; ++$i) {
$return->limbs[$i] = (int) (
(($this->limbs[$i] >> $c) | ($carryRight << (16 - $c))) & 0xffff
);
$carryRight = (int) ($this->limbs[$i] & $mask);
}
}
return $return;
}
/**
* Subtract a normal integer from an int64 object.
*
* @param int $int
* @return ParagonIE_Sodium_Core32_Int64
* @throws SodiumException
* @throws TypeError
*/
public function subInt($int)
{
ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);
$int = (int) $int;
$return = new ParagonIE_Sodium_Core32_Int64();
$return->unsignedInt = $this->unsignedInt;
/** @var int $carry */
$carry = 0;
for ($i = 3; $i >= 0; --$i) {
/** @var int $tmp */
$tmp = $this->limbs[$i] - (($int >> 16) & 0xffff) + $carry;
/** @var int $carry */
$carry = $tmp >> 16;
$return->limbs[$i] = (int) ($tmp & 0xffff);
}
return $return;
}
/**
* The difference between two Int64 objects.
*
* @param ParagonIE_Sodium_Core32_Int64 $b
* @return ParagonIE_Sodium_Core32_Int64
*/
public function subInt64(ParagonIE_Sodium_Core32_Int64 $b)
{
$return = new ParagonIE_Sodium_Core32_Int64();
$return->unsignedInt = $this->unsignedInt;
/** @var int $carry */
$carry = 0;
for ($i = 3; $i >= 0; --$i) {
/** @var int $tmp */
$tmp = $this->limbs[$i] - $b->limbs[$i] + $carry;
/** @var int $carry */
$carry = ($tmp >> 16);
$return->limbs[$i] = (int) ($tmp & 0xffff);
}
return $return;
}
/**
* XOR this 64-bit integer with another.
*
* @param ParagonIE_Sodium_Core32_Int64 $b
* @return ParagonIE_Sodium_Core32_Int64
*/
public function xorInt64(ParagonIE_Sodium_Core32_Int64 $b)
{
$return = new ParagonIE_Sodium_Core32_Int64();
$return->unsignedInt = $this->unsignedInt;
$return->limbs = array(
(int) ($this->limbs[0] ^ $b->limbs[0]),
(int) ($this->limbs[1] ^ $b->limbs[1]),
(int) ($this->limbs[2] ^ $b->limbs[2]),
(int) ($this->limbs[3] ^ $b->limbs[3])
);
return $return;
}
/**
* @param int $low
* @param int $high
* @return self
* @throws SodiumException
* @throws TypeError
*/
public static function fromInts($low, $high)
{
ParagonIE_Sodium_Core32_Util::declareScalarType($low, 'int', 1);
ParagonIE_Sodium_Core32_Util::declareScalarType($high, 'int', 2);
$high = (int) $high;
$low = (int) $low;
return new ParagonIE_Sodium_Core32_Int64(
array(
(int) (($high >> 16) & 0xffff),
(int) ($high & 0xffff),
(int) (($low >> 16) & 0xffff),
(int) ($low & 0xffff)
)
);
}
/**
* @param int $low
* @return self
* @throws SodiumException
* @throws TypeError
*/
public static function fromInt($low)
{
ParagonIE_Sodium_Core32_Util::declareScalarType($low, 'int', 1);
$low = (int) $low;
return new ParagonIE_Sodium_Core32_Int64(
array(
0,
0,
(int) (($low >> 16) & 0xffff),
(int) ($low & 0xffff)
)
);
}
/**
* @return int
*/
public function toInt()
{
return (int) (
(($this->limbs[2] & 0xffff) << 16)
|
($this->limbs[3] & 0xffff)
);
}
/**
* @param string $string
* @return self
* @throws SodiumException
* @throws TypeError
*/
public static function fromString($string)
{
ParagonIE_Sodium_Core32_Util::declareScalarType($string, 'string', 1);
$string = (string) $string;
if (ParagonIE_Sodium_Core32_Util::strlen($string) !== 8) {
throw new RangeException(
'String must be 8 bytes; ' . ParagonIE_Sodium_Core32_Util::strlen($string) . ' given.'
);
}
$return = new ParagonIE_Sodium_Core32_Int64();
$return->limbs[0] = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[0]) & 0xff) << 8);
$return->limbs[0] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[1]) & 0xff);
$return->limbs[1] = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[2]) & 0xff) << 8);
$return->limbs[1] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[3]) & 0xff);
$return->limbs[2] = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[4]) & 0xff) << 8);
$return->limbs[2] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[5]) & 0xff);
$return->limbs[3] = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[6]) & 0xff) << 8);
$return->limbs[3] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[7]) & 0xff);
return $return;
}
/**
* @param string $string
* @return self
* @throws SodiumException
* @throws TypeError
*/
public static function fromReverseString($string)
{
ParagonIE_Sodium_Core32_Util::declareScalarType($string, 'string', 1);
$string = (string) $string;
if (ParagonIE_Sodium_Core32_Util::strlen($string) !== 8) {
throw new RangeException(
'String must be 8 bytes; ' . ParagonIE_Sodium_Core32_Util::strlen($string) . ' given.'
);
}
$return = new ParagonIE_Sodium_Core32_Int64();
$return->limbs[0] = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[7]) & 0xff) << 8);
$return->limbs[0] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[6]) & 0xff);
$return->limbs[1] = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[5]) & 0xff) << 8);
$return->limbs[1] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[4]) & 0xff);
$return->limbs[2] = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[3]) & 0xff) << 8);
$return->limbs[2] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[2]) & 0xff);
$return->limbs[3] = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[1]) & 0xff) << 8);
$return->limbs[3] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[0]) & 0xff);
return $return;
}
/**
* @return array<int, int>
*/
public function toArray()
{
return array(
(int) ((($this->limbs[0] & 0xffff) << 16) | ($this->limbs[1] & 0xffff)),
(int) ((($this->limbs[2] & 0xffff) << 16) | ($this->limbs[3] & 0xffff))
);
}
/**
* @return ParagonIE_Sodium_Core32_Int32
*/
public function toInt32()
{
$return = new ParagonIE_Sodium_Core32_Int32();
$return->limbs[0] = (int) ($this->limbs[2]);
$return->limbs[1] = (int) ($this->limbs[3]);
$return->unsignedInt = $this->unsignedInt;
$return->overflow = (int) (ParagonIE_Sodium_Core32_Util::abs($this->limbs[1], 16) & 0xffff);
return $return;
}
/**
* @return ParagonIE_Sodium_Core32_Int64
*/
public function toInt64()
{
$return = new ParagonIE_Sodium_Core32_Int64();
$return->limbs[0] = (int) ($this->limbs[0]);
$return->limbs[1] = (int) ($this->limbs[1]);
$return->limbs[2] = (int) ($this->limbs[2]);
$return->limbs[3] = (int) ($this->limbs[3]);
$return->unsignedInt = $this->unsignedInt;
$return->overflow = ParagonIE_Sodium_Core32_Util::abs($this->overflow);
return $return;
}
/**
* @param bool $bool
* @return self
*/
public function setUnsignedInt($bool = false)
{
$this->unsignedInt = !empty($bool);
return $this;
}
/**
* @return string
* @throws TypeError
*/
public function toString()
{
return ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[0] >> 8) & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[0] & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[1] >> 8) & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[1] & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[2] >> 8) & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[2] & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[3] >> 8) & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[3] & 0xff);
}
/**
* @return string
* @throws TypeError
*/
public function toReverseString()
{
return ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[3] & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[3] >> 8) & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[2] & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[2] >> 8) & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[1] & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[1] >> 8) & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr($this->limbs[0] & 0xff) .
ParagonIE_Sodium_Core32_Util::intToChr(($this->limbs[0] >> 8) & 0xff);
}
/**
* @return string
*/
public function __toString()
{
try {
return $this->toString();
} catch (TypeError $ex) {
// PHP engine can't handle exceptions from __toString()
return '';
}
}
}
Kueue Pay | Contactless Payment System
top
Secure, Swift, and Smart Payments with NFCPay !
With NFC Pay, experience seamless and secure transactions right at your fingertips. Add your cards, load your wallet, and make payments effortlessly. Activate your merchant account to receive payments or transfer money instantly to other users. NFC Pay combines security, speed, and smart features, making every transaction smooth and reliable. Embrace the future of payments with NFC Pay.
Quick Steps to NFC Pay
Getting started with NFC Pay is simple and quick. Register your account, add your cards, and you're ready to make payments in no time. Whether you're paying at a store, sending money to a friend, or managing your merchant transactions, NFC Pay makes it easy and secure.
1
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Download the NFC Pay app and sign up with your email or phone number. Complete the registration process by verifying your identity, and set up your secure PIN to protect your account.
2
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Link your debit or credit cards to your NFC Pay wallet. Simply scan your card or enter the details manually, and you’re set to load funds, shop, and pay with ease.
3
Make Payment
To pay, simply tap your phone or scan the QR code at checkout. You can also transfer money to other users with a few taps. Enjoy fast, contactless payments with top-notch security.
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NFC Pay prioritizes your security with advanced features that safeguard every transaction. From SMS or email verification to end-to-end encryption, we've implemented robust measures to ensure your data is always protected. Our security systems are designed to prevent unauthorized access and provide you with a safe and reliable payment experience.
SMS or Email Verification
Receive instant alerts for every transaction to keep track of your account activities.
KYC Solution
Verify your identity through our Know Your Customer process to prevent fraud and enhance security.
Two Factor Authentication
Dramatically supply transparent backward deliverables before caward comp internal or "organic" sources.
End-to-End Encryption
All your data and transactions are encrypted, ensuring that your sensitive information remains private.
Behavior Tracking
Monitor unusual activity patterns to detect and prevent suspicious behavior in real-time.
Top Reasons to Choose Us for Reliable and Expert Solutions
With NFC Pay, you get a trusted platform backed by proven expertise and a commitment to quality. We put our customers first, offering innovative solutions tailored to your needs, ensuring every transaction is secure, swift, and seamless.
1
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Our team brings years of experience in the digital payments industry to provide reliable services.
2
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We prioritize excellence, ensuring that every aspect of our platform meets the highest standards.
3
Customer-Centric Approach
Your needs drive our solutions, and we are dedicated to delivering a superior user experience.
4
Innovative Solutions
We continuously evolve, integrating the latest technologies to enhance your payment experience.
Customer Feedback: Real Experiences from Satisfied Clients and Partners
Hear from our users who trust NFC Pay for their everyday transactions. Our commitment to security, ease of use, and exceptional service shines through in their experiences. See why our clients choose NFC Pay for their payment needs and how it has transformed the way they manage their finances.
"NFC Pay has made my transactions incredibly simple and secure. The intuitive interface and quick payment options are game-changers for my business"
"I love how NFC Pay prioritizes security without compromising on convenience. The two-factor authentication and instant alerts give me peace of mind every time I use it."
"Setting up my merchant account was a breeze, and now I can accept payments effortlessly. NFC Pay has truly streamlined my operations, saving me time and hassle."
Get the NFC Pay App for Seamless Transactions Anytime, Anywhere
Unlock the full potential of NFC Pay by downloading our app, designed to bring secure, swift, and smart transactions to your fingertips. Whether you're paying at a store, transferring money to friends, or managing your business payments, the NFC Pay app makes it effortless. Available on both iOS and Android, it's your all-in-one solution for convenient and reliable digital payments. Download now and experience the future of payments!
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