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-rw-r--r--vendor/paragonie/sodium_compat/src/Core32/Int32.php871
1 files changed, 871 insertions, 0 deletions
diff --git a/vendor/paragonie/sodium_compat/src/Core32/Int32.php b/vendor/paragonie/sodium_compat/src/Core32/Int32.php
new file mode 100644
index 0000000..c3a1790
--- /dev/null
+++ b/vendor/paragonie/sodium_compat/src/Core32/Int32.php
@@ -0,0 +1,871 @@
+<?php
+
+/**
+ * Class ParagonIE_Sodium_Core32_Int32
+ *
+ * Encapsulates a 32-bit integer.
+ *
+ * These are immutable. It always returns a new instance.
+ */
+class ParagonIE_Sodium_Core32_Int32
+{
+ /**
+ * @var array<int, int> - two 16-bit integers
+ *
+ * 0 is the higher 16 bits
+ * 1 is the lower 16 bits
+ */
+ public $limbs = array(0, 0);
+
+ /**
+ * @var int
+ */
+ public $overflow = 0;
+
+ /**
+ * @var bool
+ */
+ public $unsignedInt = false;
+
+ /**
+ * ParagonIE_Sodium_Core32_Int32 constructor.
+ * @param array $array
+ * @param bool $unsignedInt
+ */
+ public function __construct($array = array(0, 0), $unsignedInt = false)
+ {
+ $this->limbs = array(
+ (int) $array[0],
+ (int) $array[1]
+ );
+ $this->overflow = 0;
+ $this->unsignedInt = $unsignedInt;
+ }
+
+ /**
+ * Adds two int32 objects
+ *
+ * @param ParagonIE_Sodium_Core32_Int32 $addend
+ * @return ParagonIE_Sodium_Core32_Int32
+ */
+ public function addInt32(ParagonIE_Sodium_Core32_Int32 $addend)
+ {
+ $i0 = $this->limbs[0];
+ $i1 = $this->limbs[1];
+ $j0 = $addend->limbs[0];
+ $j1 = $addend->limbs[1];
+
+ $r1 = $i1 + ($j1 & 0xffff);
+ $carry = $r1 >> 16;
+
+ $r0 = $i0 + ($j0 & 0xffff) + $carry;
+ $carry = $r0 >> 16;
+
+ $r0 &= 0xffff;
+ $r1 &= 0xffff;
+
+ $return = new ParagonIE_Sodium_Core32_Int32(
+ array($r0, $r1)
+ );
+ $return->overflow = $carry;
+ $return->unsignedInt = $this->unsignedInt;
+ return $return;
+ }
+
+ /**
+ * Adds a normal integer to an int32 object
+ *
+ * @param int $int
+ * @return ParagonIE_Sodium_Core32_Int32
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public function addInt($int)
+ {
+ ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);
+ /** @var int $int */
+ $int = (int) $int;
+
+ $int = (int) $int;
+
+ $i0 = $this->limbs[0];
+ $i1 = $this->limbs[1];
+
+ $r1 = $i1 + ($int & 0xffff);
+ $carry = $r1 >> 16;
+
+ $r0 = $i0 + (($int >> 16) & 0xffff) + $carry;
+ $carry = $r0 >> 16;
+ $r0 &= 0xffff;
+ $r1 &= 0xffff;
+ $return = new ParagonIE_Sodium_Core32_Int32(
+ array($r0, $r1)
+ );
+ $return->overflow = $carry;
+ $return->unsignedInt = $this->unsignedInt;
+ return $return;
+ }
+
+ /**
+ * @param int $b
+ * @return int
+ */
+ public function compareInt($b = 0)
+ {
+ $gt = 0;
+ $eq = 1;
+
+ $i = 2;
+ $j = 0;
+ while ($i > 0) {
+ --$i;
+ /** @var int $x1 */
+ $x1 = $this->limbs[$i];
+ /** @var int $x2 */
+ $x2 = ($b >> ($j << 4)) & 0xffff;
+ /** @var int $gt */
+ $gt |= (($x2 - $x1) >> 8) & $eq;
+ /** @var int $eq */
+ $eq &= (($x2 ^ $x1) - 1) >> 8;
+ }
+ return ($gt + $gt - $eq) + 1;
+ }
+
+ /**
+ * @param int $m
+ * @return ParagonIE_Sodium_Core32_Int32
+ */
+ public function mask($m = 0)
+ {
+ /** @var int $hi */
+ $hi = ($m >> 16) & 0xffff;
+ /** @var int $lo */
+ $lo = ($m & 0xffff);
+ return new ParagonIE_Sodium_Core32_Int32(
+ array(
+ (int) ($this->limbs[0] & $hi),
+ (int) ($this->limbs[1] & $lo)
+ ),
+ $this->unsignedInt
+ );
+ }
+
+ /**
+ * @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];
+ $carry = ($product >> $baseLog2 & 0xffff);
+ $r[$i + $j] = ($product - (int) ($carry * $base)) & 0xffff;
+ $r[$i + $j + 1] += $carry;
+ }
+ }
+ return array_slice($r, 0, 5);
+ }
+
+ /**
+ * @param int $int
+ * @return ParagonIE_Sodium_Core32_Int32
+ */
+ public function mulIntFast($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
+ );
+ if ($aNeg) {
+ for ($i = 0; $i < 2; ++$i) {
+ $a[$i] = ($a[$i] ^ 0xffff) & 0xffff;
+ }
+ ++$a[0];
+ }
+ if ($bNeg) {
+ for ($i = 0; $i < 2; ++$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; $i < 2; ++$i) {
+ $res[$i] = (0xffff ^ $res[$i]) & 0xffff;
+ }
+ // Handle integer overflow
+ $c = 1;
+ for ($i = 0; $i < 2; ++$i) {
+ $res[$i] += $c;
+ $c = $res[$i] >> 16;
+ $res[$i] &= 0xffff;
+ }
+ }
+
+ // Return our values
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->limbs = array(
+ $res[1] & 0xffff,
+ $res[0] & 0xffff
+ );
+ if (count($res) > 2) {
+ $return->overflow = $res[2] & 0xffff;
+ }
+ $return->unsignedInt = $this->unsignedInt;
+ return $return;
+ }
+
+ /**
+ * @param ParagonIE_Sodium_Core32_Int32 $right
+ * @return ParagonIE_Sodium_Core32_Int32
+ */
+ public function mulInt32Fast(ParagonIE_Sodium_Core32_Int32 $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; $i < 2; ++$i) {
+ $a[$i] = ($a[$i] ^ 0xffff) & 0xffff;
+ }
+ ++$a[0];
+ }
+ if ($bNeg) {
+ for ($i = 0; $i < 2; ++$i) {
+ $b[$i] = ($b[$i] ^ 0xffff) & 0xffff;
+ }
+ ++$b[0];
+ }
+ $res = $this->multiplyLong($a, $b);
+ if ($aNeg !== $bNeg) {
+ if ($aNeg !== $bNeg) {
+ for ($i = 0; $i < 2; ++$i) {
+ $res[$i] = ($res[$i] ^ 0xffff) & 0xffff;
+ }
+ $c = 1;
+ for ($i = 0; $i < 2; ++$i) {
+ $res[$i] += $c;
+ $c = $res[$i] >> 16;
+ $res[$i] &= 0xffff;
+ }
+ }
+ }
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->limbs = array(
+ $res[1] & 0xffff,
+ $res[0] & 0xffff
+ );
+ if (count($res) > 2) {
+ $return->overflow = $res[2];
+ }
+ return $return;
+ }
+
+ /**
+ * @param int $int
+ * @param int $size
+ * @return ParagonIE_Sodium_Core32_Int32
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public function mulInt($int = 0, $size = 0)
+ {
+ ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);
+ ParagonIE_Sodium_Core32_Util::declareScalarType($size, 'int', 2);
+ if (ParagonIE_Sodium_Compat::$fastMult) {
+ return $this->mulIntFast((int) $int);
+ }
+ /** @var int $int */
+ $int = (int) $int;
+ /** @var int $size */
+ $size = (int) $size;
+
+ if (!$size) {
+ $size = 31;
+ }
+ /** @var int $size */
+
+ $a = clone $this;
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->unsignedInt = $this->unsignedInt;
+
+ // Initialize:
+ $ret0 = 0;
+ $ret1 = 0;
+ $a0 = $a->limbs[0];
+ $a1 = $a->limbs[1];
+
+ /** @var int $size */
+ /** @var int $i */
+ for ($i = $size; $i >= 0; --$i) {
+ $m = (int) (-($int & 1));
+ $x0 = $a0 & $m;
+ $x1 = $a1 & $m;
+
+ $ret1 += $x1;
+ $c = $ret1 >> 16;
+
+ $ret0 += $x0 + $c;
+
+ $ret0 &= 0xffff;
+ $ret1 &= 0xffff;
+
+ $a1 = ($a1 << 1);
+ $x1 = $a1 >> 16;
+ $a0 = ($a0 << 1) | $x1;
+ $a0 &= 0xffff;
+ $a1 &= 0xffff;
+ $int >>= 1;
+ }
+ $return->limbs[0] = $ret0;
+ $return->limbs[1] = $ret1;
+ return $return;
+ }
+
+ /**
+ * @param ParagonIE_Sodium_Core32_Int32 $int
+ * @param int $size
+ * @return ParagonIE_Sodium_Core32_Int32
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public function mulInt32(ParagonIE_Sodium_Core32_Int32 $int, $size = 0)
+ {
+ ParagonIE_Sodium_Core32_Util::declareScalarType($size, 'int', 2);
+ if (ParagonIE_Sodium_Compat::$fastMult) {
+ return $this->mulInt32Fast($int);
+ }
+ if (!$size) {
+ $size = 31;
+ }
+ /** @var int $size */
+
+ $a = clone $this;
+ $b = clone $int;
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->unsignedInt = $this->unsignedInt;
+
+ // Initialize:
+ $ret0 = 0;
+ $ret1 = 0;
+ $a0 = $a->limbs[0];
+ $a1 = $a->limbs[1];
+ $b0 = $b->limbs[0];
+ $b1 = $b->limbs[1];
+
+ /** @var int $size */
+ /** @var int $i */
+ for ($i = $size; $i >= 0; --$i) {
+ $m = (int) (-($b1 & 1));
+ $x0 = $a0 & $m;
+ $x1 = $a1 & $m;
+
+ $ret1 += $x1;
+ $c = $ret1 >> 16;
+
+ $ret0 += $x0 + $c;
+
+ $ret0 &= 0xffff;
+ $ret1 &= 0xffff;
+
+ $a1 = ($a1 << 1);
+ $x1 = $a1 >> 16;
+ $a0 = ($a0 << 1) | $x1;
+ $a0 &= 0xffff;
+ $a1 &= 0xffff;
+
+ $x0 = ($b0 & 1) << 16;
+ $b0 = ($b0 >> 1);
+ $b1 = (($b1 | $x0) >> 1);
+
+ $b0 &= 0xffff;
+ $b1 &= 0xffff;
+
+ }
+ $return->limbs[0] = $ret0;
+ $return->limbs[1] = $ret1;
+
+ return $return;
+ }
+
+ /**
+ * OR this 32-bit integer with another.
+ *
+ * @param ParagonIE_Sodium_Core32_Int32 $b
+ * @return ParagonIE_Sodium_Core32_Int32
+ */
+ public function orInt32(ParagonIE_Sodium_Core32_Int32 $b)
+ {
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->unsignedInt = $this->unsignedInt;
+ $return->limbs = array(
+ (int) ($this->limbs[0] | $b->limbs[0]),
+ (int) ($this->limbs[1] | $b->limbs[1])
+ );
+ /** @var int overflow */
+ $return->overflow = $this->overflow | $b->overflow;
+ return $return;
+ }
+
+ /**
+ * @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 $c
+ * @return ParagonIE_Sodium_Core32_Int32
+ * @throws SodiumException
+ * @throws TypeError
+ * @psalm-suppress MixedArrayAccess
+ */
+ public function rotateLeft($c = 0)
+ {
+ ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
+ /** @var int $c */
+ $c = (int) $c;
+
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->unsignedInt = $this->unsignedInt;
+ $c &= 31;
+ if ($c === 0) {
+ // NOP, but we want a copy.
+ $return->limbs = $this->limbs;
+ } else {
+ /** @var int $c */
+
+ /** @var int $idx_shift */
+ $idx_shift = ($c >> 4) & 1;
+
+ /** @var int $sub_shift */
+ $sub_shift = $c & 15;
+
+ /** @var array<int, int> $limbs */
+ $limbs =& $return->limbs;
+
+ /** @var array<int, int> $myLimbs */
+ $myLimbs =& $this->limbs;
+
+ for ($i = 1; $i >= 0; --$i) {
+ /** @var int $j */
+ $j = ($i + $idx_shift) & 1;
+ /** @var int $k */
+ $k = ($i + $idx_shift + 1) & 1;
+ $limbs[$i] = (int) (
+ (
+ ((int) ($myLimbs[$j]) << $sub_shift)
+ |
+ ((int) ($myLimbs[$k]) >> (16 - $sub_shift))
+ ) & 0xffff
+ );
+ }
+ }
+ return $return;
+ }
+
+ /**
+ * Rotate to the right
+ *
+ * @param int $c
+ * @return ParagonIE_Sodium_Core32_Int32
+ * @throws SodiumException
+ * @throws TypeError
+ * @psalm-suppress MixedArrayAccess
+ */
+ public function rotateRight($c = 0)
+ {
+ ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
+ /** @var int $c */
+ $c = (int) $c;
+
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->unsignedInt = $this->unsignedInt;
+ $c &= 31;
+ /** @var int $c */
+ if ($c === 0) {
+ // NOP, but we want a copy.
+ $return->limbs = $this->limbs;
+ } else {
+ /** @var int $c */
+
+ /** @var int $idx_shift */
+ $idx_shift = ($c >> 4) & 1;
+
+ /** @var int $sub_shift */
+ $sub_shift = $c & 15;
+
+ /** @var array<int, int> $limbs */
+ $limbs =& $return->limbs;
+
+ /** @var array<int, int> $myLimbs */
+ $myLimbs =& $this->limbs;
+
+ for ($i = 1; $i >= 0; --$i) {
+ /** @var int $j */
+ $j = ($i - $idx_shift) & 1;
+ /** @var int $k */
+ $k = ($i - $idx_shift - 1) & 1;
+ $limbs[$i] = (int) (
+ (
+ ((int) ($myLimbs[$j]) >> (int) ($sub_shift))
+ |
+ ((int) ($myLimbs[$k]) << (16 - (int) ($sub_shift)))
+ ) & 0xffff
+ );
+ }
+ }
+ return $return;
+ }
+
+ /**
+ * @param bool $bool
+ * @return self
+ */
+ public function setUnsignedInt($bool = false)
+ {
+ $this->unsignedInt = !empty($bool);
+ return $this;
+ }
+
+ /**
+ * @param int $c
+ * @return ParagonIE_Sodium_Core32_Int32
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public function shiftLeft($c = 0)
+ {
+ ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
+ /** @var int $c */
+ $c = (int) $c;
+
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->unsignedInt = $this->unsignedInt;
+ $c &= 63;
+ /** @var int $c */
+ if ($c === 0) {
+ $return->limbs = $this->limbs;
+ } elseif ($c < 0) {
+ /** @var int $c */
+ return $this->shiftRight(-$c);
+ } else {
+ /** @var int $c */
+ /** @var int $tmp */
+ $tmp = $this->limbs[1] << $c;
+ $return->limbs[1] = (int)($tmp & 0xffff);
+ /** @var int $carry */
+ $carry = $tmp >> 16;
+
+ /** @var int $tmp */
+ $tmp = ($this->limbs[0] << $c) | ($carry & 0xffff);
+ $return->limbs[0] = (int) ($tmp & 0xffff);
+ }
+ return $return;
+ }
+
+ /**
+ * @param int $c
+ * @return ParagonIE_Sodium_Core32_Int32
+ * @throws SodiumException
+ * @throws TypeError
+ * @psalm-suppress MixedAssignment
+ * @psalm-suppress MixedOperand
+ */
+ public function shiftRight($c = 0)
+ {
+ ParagonIE_Sodium_Core32_Util::declareScalarType($c, 'int', 1);
+ /** @var int $c */
+ $c = (int) $c;
+
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->unsignedInt = $this->unsignedInt;
+ $c &= 63;
+ /** @var int $c */
+ if ($c >= 16) {
+ $return->limbs = array(
+ (int) ($this->overflow & 0xffff),
+ (int) ($this->limbs[0])
+ );
+ $return->overflow = $this->overflow >> 16;
+ return $return->shiftRight($c & 15);
+ }
+ if ($c === 0) {
+ $return->limbs = $this->limbs;
+ } elseif ($c < 0) {
+ /** @var int $c */
+ return $this->shiftLeft(-$c);
+ } else {
+ if (!is_int($c)) {
+ throw new TypeError();
+ }
+ /** @var int $c */
+ // $return->limbs[0] = (int) (($this->limbs[0] >> $c) & 0xffff);
+ $carryLeft = (int) ($this->overflow & ((1 << ($c + 1)) - 1));
+ $return->limbs[0] = (int) ((($this->limbs[0] >> $c) | ($carryLeft << (16 - $c))) & 0xffff);
+ $carryRight = (int) ($this->limbs[0] & ((1 << ($c + 1)) - 1));
+ $return->limbs[1] = (int) ((($this->limbs[1] >> $c) | ($carryRight << (16 - $c))) & 0xffff);
+ $return->overflow >>= $c;
+ }
+ return $return;
+ }
+
+ /**
+ * Subtract a normal integer from an int32 object.
+ *
+ * @param int $int
+ * @return ParagonIE_Sodium_Core32_Int32
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public function subInt($int)
+ {
+ ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);
+ /** @var int $int */
+ $int = (int) $int;
+
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->unsignedInt = $this->unsignedInt;
+
+ /** @var int $tmp */
+ $tmp = $this->limbs[1] - ($int & 0xffff);
+ /** @var int $carry */
+ $carry = $tmp >> 16;
+ $return->limbs[1] = (int) ($tmp & 0xffff);
+
+ /** @var int $tmp */
+ $tmp = $this->limbs[0] - (($int >> 16) & 0xffff) + $carry;
+ $return->limbs[0] = (int) ($tmp & 0xffff);
+ return $return;
+ }
+
+ /**
+ * Subtract two int32 objects from each other
+ *
+ * @param ParagonIE_Sodium_Core32_Int32 $b
+ * @return ParagonIE_Sodium_Core32_Int32
+ */
+ public function subInt32(ParagonIE_Sodium_Core32_Int32 $b)
+ {
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->unsignedInt = $this->unsignedInt;
+
+ /** @var int $tmp */
+ $tmp = $this->limbs[1] - ($b->limbs[1] & 0xffff);
+ /** @var int $carry */
+ $carry = $tmp >> 16;
+ $return->limbs[1] = (int) ($tmp & 0xffff);
+
+ /** @var int $tmp */
+ $tmp = $this->limbs[0] - ($b->limbs[0] & 0xffff) + $carry;
+ $return->limbs[0] = (int) ($tmp & 0xffff);
+ return $return;
+ }
+
+ /**
+ * XOR this 32-bit integer with another.
+ *
+ * @param ParagonIE_Sodium_Core32_Int32 $b
+ * @return ParagonIE_Sodium_Core32_Int32
+ */
+ public function xorInt32(ParagonIE_Sodium_Core32_Int32 $b)
+ {
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->unsignedInt = $this->unsignedInt;
+ $return->limbs = array(
+ (int) ($this->limbs[0] ^ $b->limbs[0]),
+ (int) ($this->limbs[1] ^ $b->limbs[1])
+ );
+ return $return;
+ }
+
+ /**
+ * @param int $signed
+ * @return self
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public static function fromInt($signed)
+ {
+ ParagonIE_Sodium_Core32_Util::declareScalarType($signed, 'int', 1);;
+ /** @var int $signed */
+ $signed = (int) $signed;
+
+ return new ParagonIE_Sodium_Core32_Int32(
+ array(
+ (int) (($signed >> 16) & 0xffff),
+ (int) ($signed & 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) !== 4) {
+ throw new RangeException(
+ 'String must be 4 bytes; ' . ParagonIE_Sodium_Core32_Util::strlen($string) . ' given.'
+ );
+ }
+ $return = new ParagonIE_Sodium_Core32_Int32();
+
+ $return->limbs[0] = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($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 $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) !== 4) {
+ throw new RangeException(
+ 'String must be 4 bytes; ' . ParagonIE_Sodium_Core32_Util::strlen($string) . ' given.'
+ );
+ }
+ $return = new ParagonIE_Sodium_Core32_Int32();
+
+ $return->limbs[0] = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[3]) & 0xff) << 8);
+ $return->limbs[0] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[2]) & 0xff);
+ $return->limbs[1] = (int) ((ParagonIE_Sodium_Core32_Util::chrToInt($string[1]) & 0xff) << 8);
+ $return->limbs[1] |= (ParagonIE_Sodium_Core32_Util::chrToInt($string[0]) & 0xff);
+ return $return;
+ }
+
+ /**
+ * @return array<int, int>
+ */
+ public function toArray()
+ {
+ return array((int) ($this->limbs[0] << 16 | $this->limbs[1]));
+ }
+
+ /**
+ * @return string
+ * @throws TypeError
+ */
+ public function toString()
+ {
+ return
+ ParagonIE_Sodium_Core32_Util::intToChr(($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($this->limbs[1] & 0xff);
+ }
+
+ /**
+ * @return int
+ */
+ public function toInt()
+ {
+ return (int) (
+ (($this->limbs[0] & 0xffff) << 16)
+ |
+ ($this->limbs[1] & 0xffff)
+ );
+ }
+
+ /**
+ * @return ParagonIE_Sodium_Core32_Int32
+ */
+ public function toInt32()
+ {
+ $return = new ParagonIE_Sodium_Core32_Int32();
+ $return->limbs[0] = (int) ($this->limbs[0] & 0xffff);
+ $return->limbs[1] = (int) ($this->limbs[1] & 0xffff);
+ $return->unsignedInt = $this->unsignedInt;
+ $return->overflow = (int) ($this->overflow & 0x7fffffff);
+ return $return;
+ }
+
+ /**
+ * @return ParagonIE_Sodium_Core32_Int64
+ */
+ public function toInt64()
+ {
+ $return = new ParagonIE_Sodium_Core32_Int64();
+ $return->unsignedInt = $this->unsignedInt;
+ if ($this->unsignedInt) {
+ $return->limbs[0] += (($this->overflow >> 16) & 0xffff);
+ $return->limbs[1] += (($this->overflow) & 0xffff);
+ } else {
+ $neg = -(($this->limbs[0] >> 15) & 1);
+ $return->limbs[0] = (int)($neg & 0xffff);
+ $return->limbs[1] = (int)($neg & 0xffff);
+ }
+ $return->limbs[2] = (int) ($this->limbs[0] & 0xffff);
+ $return->limbs[3] = (int) ($this->limbs[1] & 0xffff);
+ return $return;
+ }
+
+ /**
+ * @return string
+ * @throws TypeError
+ */
+ public function toReverseString()
+ {
+ return ParagonIE_Sodium_Core32_Util::intToChr($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 '';
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-16 02:12:59 +0200