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extlib required by phpseclib (ParagonIE/ConstantTime)

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This commit is contained in:
Mikael Nordfeldth 2016-06-17 23:58:49 +02:00
parent 5bfd9dbaa7
commit d4216d09c6
12 changed files with 1742 additions and 0 deletions
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396
extlib/ParagonIE/ConstantTime/Base32.php Normal file
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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;
/**
* Copyright (c) 2016 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* Class Base32
* [A-Z][2-7]
*
* @package ParagonIE\ConstantTime
*/
abstract class Base32 implements EncoderInterface
{
/**
* Decode a Base32-encoded string into raw binary
*
* @param string $src
* @return string
*/
public static function decode(string $src, bool $strictPadding = false): string
{
return static::doDecode($src, false, $strictPadding);
}
/**
* Decode an uppercase Base32-encoded string into raw binary
*
* @param string $src
* @return string
*/
public static function decodeUpper(string $src, bool $strictPadding = false): string
{
return static::doDecode($src, true, $strictPadding);
}
/**
* Encode into Base32 (RFC 4648)
*
* @param string $src
* @return string
*/
public static function encode(string $src): string
{
return static::doEncode($src, false);
}
/**
* Encode into uppercase Base32 (RFC 4648)
*
* @param string $src
* @return string
*/
public static function encodeUpper(string $src): string
{
return static::doEncode($src, true);
}
/**
* Uses bitwise operators instead of table-lookups to turn 5-bit integers
* into 8-bit integers.
*
* @param int $src
* @return int
*/
protected static function decode5Bits(int $src): int
{
$ret = -1;
// if ($src > 96 && $src < 123) $ret += $src - 97 + 1; // -64
$ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 96);
// if ($src > 0x31 && $src < 0x38) $ret += $src - 24 + 1; // -23
$ret += (((0x31 - $src) & ($src - 0x38)) >> 8) & ($src - 23);
return $ret;
}
/**
* Uses bitwise operators instead of table-lookups to turn 5-bit integers
* into 8-bit integers.
*
* Uppercase variant.
*
* @param int $src
* @return int
*/
protected static function decode5BitsUpper(int $src): int
{
$ret = -1;
// if ($src > 64 && $src < 91) $ret += $src - 65 + 1; // -64
$ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 64);
// if ($src > 0x31 && $src < 0x38) $ret += $src - 24 + 1; // -23
$ret += (((0x31 - $src) & ($src - 0x38)) >> 8) & ($src - 23);
return $ret;
}
/**
* Uses bitwise operators instead of table-lookups to turn 8-bit integers
* into 5-bit integers.
*
* @param $src
* @return string
*/
protected static function encode5Bits(int $src): string
{
$diff = 0x61;
// if ($src > 25) $ret -= 72;
$diff -= ((25 - $src) >> 8) & 73;
return \pack('C', $src + $diff);
}
/**
* Uses bitwise operators instead of table-lookups to turn 8-bit integers
* into 5-bit integers.
*
* Uppercase variant.
*
* @param $src
* @return string
*/
protected static function encode5BitsUpper(int $src): string
{
$diff = 0x41;
// if ($src > 25) $ret -= 40;
$diff -= ((25 - $src) >> 8) & 41;
return \pack('C', $src + $diff);
}
/**
* Base32 decoding
*
* @param string $src
* @param bool $upper
* @param bool $strictPadding
* @return string
*/
protected static function doDecode(string $src, bool $upper = false, bool $strictPadding = false): string
{
// We do this to reduce code duplication:
$method = $upper
? 'decode5BitsUpper'
: 'decode5Bits';
// Remove padding
$srcLen = Binary::safeStrlen($src);
if ($srcLen === 0) {
return '';
}
if ($strictPadding) {
if (($srcLen & 7) === 0) {
for ($j = 0; $j < 7; ++$j) {
if ($src[$srcLen - 1] === '=') {
$srcLen--;
} else {
break;
}
}
}
if (($srcLen & 7) === 1) {
throw new \RangeException(
'Incorrect padding'
);
}
} else {
$src = \rtrim($src, '=');
$srcLen = Binary::safeStrlen($src);
}
$err = 0;
$dest = '';
// Main loop (no padding):
for ($i = 0; $i + 8 <= $srcLen; $i += 8) {
$chunk = \unpack('C*', Binary::safeSubstr($src, $i, 8));
$c0 = static::$method($chunk[1]);
$c1 = static::$method($chunk[2]);
$c2 = static::$method($chunk[3]);
$c3 = static::$method($chunk[4]);
$c4 = static::$method($chunk[5]);
$c5 = static::$method($chunk[6]);
$c6 = static::$method($chunk[7]);
$c7 = static::$method($chunk[8]);
$dest .= \pack(
'CCCCC',
(($c0 << 3) | ($c1 >> 2) ) & 0xff,
(($c1 << 6) | ($c2 << 1) | ($c3 >> 4)) & 0xff,
(($c3 << 4) | ($c4 >> 1) ) & 0xff,
(($c4 << 7) | ($c5 << 2) | ($c6 >> 3)) & 0xff,
(($c6 << 5) | ($c7 ) ) & 0xff
);
$err |= ($c0 | $c1 | $c2 | $c3 | $c4 | $c5 | $c6 | $c7) >> 8;
}
// The last chunk, which may have padding:
if ($i < $srcLen) {
$chunk = \unpack('C*', Binary::safeSubstr($src, $i, $srcLen - $i));
$c0 = static::$method($chunk[1]);
if ($i + 6 < $srcLen) {
$c1 = static::$method($chunk[2]);
$c2 = static::$method($chunk[3]);
$c3 = static::$method($chunk[4]);
$c4 = static::$method($chunk[5]);
$c5 = static::$method($chunk[6]);
$c6 = static::$method($chunk[7]);
$dest .= \pack(
'CCCC',
(($c0 << 3) | ($c1 >> 2) ) & 0xff,
(($c1 << 6) | ($c2 << 1) | ($c3 >> 4)) & 0xff,
(($c3 << 4) | ($c4 >> 1) ) & 0xff,
(($c4 << 7) | ($c5 << 2) | ($c6 >> 3)) & 0xff
);
$err |= ($c0 | $c1 | $c2 | $c3 | $c4 | $c5 | $c6) >> 8;
} elseif ($i + 5 < $srcLen) {
$c1 = static::$method($chunk[2]);
$c2 = static::$method($chunk[3]);
$c3 = static::$method($chunk[4]);
$c4 = static::$method($chunk[5]);
$c5 = static::$method($chunk[6]);
$dest .= \pack(
'CCCC',
(($c0 << 3) | ($c1 >> 2) ) & 0xff,
(($c1 << 6) | ($c2 << 1) | ($c3 >> 4)) & 0xff,
(($c3 << 4) | ($c4 >> 1) ) & 0xff,
(($c4 << 7) | ($c5 << 2) ) & 0xff
);
$err |= ($c0 | $c1 | $c2 | $c3 | $c4 | $c5) >> 8;
} elseif ($i + 4 < $srcLen) {
$c1 = static::$method($chunk[2]);
$c2 = static::$method($chunk[3]);
$c3 = static::$method($chunk[4]);
$c4 = static::$method($chunk[5]);
$dest .= \pack(
'CCC',
(($c0 << 3) | ($c1 >> 2) ) & 0xff,
(($c1 << 6) | ($c2 << 1) | ($c3 >> 4)) & 0xff,
(($c3 << 4) | ($c4 >> 1) ) & 0xff
);
$err |= ($c0 | $c1 | $c2 | $c3 | $c4) >> 8;
} elseif ($i + 3 < $srcLen) {
$c1 = static::$method($chunk[2]);
$c2 = static::$method($chunk[3]);
$c3 = static::$method($chunk[4]);
$dest .= \pack(
'CC',
(($c0 << 3) | ($c1 >> 2) ) & 0xff,
(($c1 << 6) | ($c2 << 1) | ($c3 >> 4)) & 0xff
);
$err |= ($c0 | $c1 | $c2 | $c3) >> 8;
} elseif ($i + 2 < $srcLen) {
$c1 = static::$method($chunk[2]);
$c2 = static::$method($chunk[3]);
$dest .= \pack(
'CC',
(($c0 << 3) | ($c1 >> 2) ) & 0xff,
(($c1 << 6) | ($c2 << 1) ) & 0xff
);
$err |= ($c0 | $c1 | $c2) >> 8;
} elseif ($i + 1 < $srcLen) {
$c1 = static::$method($chunk[2]);
$dest .= \pack(
'C',
(($c0 << 3) | ($c1 >> 2) ) & 0xff
);
$err |= ($c0 | $c1) >> 8;
} else {
$dest .= \pack(
'C',
(($c0 << 3) ) & 0xff
);
$err |= ($c0) >> 8;
}
}
if ($err !== 0) {
throw new \RangeException(
'Base32::doDecode() only expects characters in the correct base32 alphabet'
);
}
return $dest;
}
/**
* Base32 Decoding
*
* @param string $src
* @param bool $upper
* @return string
*/
protected static function doEncode(string $src, bool $upper = false): string
{
// We do this to reduce code duplication:
$method = $upper
? 'encode5BitsUpper'
: 'encode5Bits';
$dest = '';
$srcLen = Binary::safeStrlen($src);
// Main loop (no padding):
for ($i = 0; $i + 5 <= $srcLen; $i += 5) {
$chunk = \unpack('C*', Binary::safeSubstr($src, $i, 5));
$b0 = $chunk[1];
$b1 = $chunk[2];
$b2 = $chunk[3];
$b3 = $chunk[4];
$b4 = $chunk[5];
$dest .=
static::$method( ($b0 >> 3) & 31) .
static::$method((($b0 << 2) | ($b1 >> 6)) & 31) .
static::$method((($b1 >> 1) ) & 31) .
static::$method((($b1 << 4) | ($b2 >> 4)) & 31) .
static::$method((($b2 << 1) | ($b3 >> 7)) & 31) .
static::$method((($b3 >> 2) ) & 31) .
static::$method((($b3 << 3) | ($b4 >> 5)) & 31) .
static::$method( $b4 & 31);
}
// The last chunk, which may have padding:
if ($i < $srcLen) {
$chunk = \unpack('C*', Binary::safeSubstr($src, $i, $srcLen - $i));
$b0 = $chunk[1];
if ($i + 3 < $srcLen) {
$b1 = $chunk[2];
$b2 = $chunk[3];
$b3 = $chunk[4];
$dest .=
static::$method( ($b0 >> 3) & 31) .
static::$method((($b0 << 2) | ($b1 >> 6)) & 31) .
static::$method((($b1 >> 1) ) & 31) .
static::$method((($b1 << 4) | ($b2 >> 4)) & 31) .
static::$method((($b2 << 1) | ($b3 >> 7)) & 31) .
static::$method((($b3 >> 2) ) & 31) .
static::$method((($b3 << 3) ) & 31) .
'=';
} elseif ($i + 2 < $srcLen) {
$b1 = $chunk[2];
$b2 = $chunk[3];
$dest .=
static::$method( ($b0 >> 3) & 31) .
static::$method((($b0 << 2) | ($b1 >> 6)) & 31) .
static::$method((($b1 >> 1) ) & 31) .
static::$method((($b1 << 4) | ($b2 >> 4)) & 31) .
static::$method((($b2 << 1) ) & 31) .
'===';
} elseif ($i + 1 < $srcLen) {
$b1 = $chunk[2];
$dest .=
static::$method( ($b0 >> 3) & 31) .
static::$method((($b0 << 2) | ($b1 >> 6)) & 31) .
static::$method((($b1 >> 1) ) & 31) .
static::$method((($b1 << 4) ) & 31) .
'====';
} else {
$dest .=
static::$method( ($b0 >> 3) & 31) .
static::$method( ($b0 << 2) & 31) .
'======';
}
}
return $dest;
}
}

111
extlib/ParagonIE/ConstantTime/Base32Hex.php Normal file
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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;
/**
* Copyright (c) 2016 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* Class Base32Hex
* [0-9][A-V]
*
* @package ParagonIE\ConstantTime
*/
abstract class Base32Hex extends Base32
{
/**
* Uses bitwise operators instead of table-lookups to turn 5-bit integers
* into 8-bit integers.
*
* @param int $src
* @return int
*/
protected static function decode5Bits(int $src): int
{
$ret = -1;
// if ($src > 0x30 && $src < 0x3a) ret += $src - 0x2e + 1; // -47
$ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src - 47);
// if ($src > 0x60 && $src < 0x77) ret += $src - 0x61 + 10 + 1; // -86
$ret += (((0x60 - $src) & ($src - 0x77)) >> 8) & ($src - 86);
return $ret;
}
/**
* Uses bitwise operators instead of table-lookups to turn 5-bit integers
* into 8-bit integers.
*
* @param int $src
* @return int
*/
protected static function decode5BitsUpper(int $src): int
{
$ret = -1;
// if ($src > 0x30 && $src < 0x3a) ret += $src - 0x2e + 1; // -47
$ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src - 47);
// if ($src > 0x40 && $src < 0x57) ret += $src - 0x41 + 10 + 1; // -54
$ret += (((0x40 - $src) & ($src - 0x57)) >> 8) & ($src - 54);
return $ret;
}
/**
* Uses bitwise operators instead of table-lookups to turn 8-bit integers
* into 5-bit integers.
*
* @param int $src
* @return string
*/
protected static function encode5Bits(int $src): string
{
$src += 0x30;
// if ($src > 0x39) $src += 0x61 - 0x3a; // 39
$src += ((0x39 - $src) >> 8) & 39;
return \pack('C', $src);
}
/**
* Uses bitwise operators instead of table-lookups to turn 8-bit integers
* into 5-bit integers.
*
* Uppercase variant.
*
* @param int $src
* @return string
*/
protected static function encode5BitsUpper(int $src): string
{
$src += 0x30;
// if ($src > 0x39) $src += 0x41 - 0x3a; // 7
$src += ((0x39 - $src) >> 8) & 7;
return \pack('C', $src);
}
}

229
extlib/ParagonIE/ConstantTime/Base64.php Normal file
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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;
/**
* Copyright (c) 2016 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* Class Base64
* [A-Z][a-z][0-9]+/
*
* @package ParagonIE\ConstantTime
*/
abstract class Base64 implements EncoderInterface
{
/**
* Encode into Base64
*
* Base64 character set "[A-Z][a-z][0-9]+/"
*
* @param string $src
* @return string
*/
public static function encode(string $src): string
{
$dest = '';
$srcLen = Binary::safeStrlen($src);
// Main loop (no padding):
for ($i = 0; $i + 3 <= $srcLen; $i += 3) {
$chunk = \unpack('C*', Binary::safeSubstr($src, $i, 3));
$b0 = $chunk[1];
$b1 = $chunk[2];
$b2 = $chunk[3];
$dest .=
static::encode6Bits( $b0 >> 2 ) .
static::encode6Bits((($b0 << 4) | ($b1 >> 4)) & 63) .
static::encode6Bits((($b1 << 2) | ($b2 >> 6)) & 63) .
static::encode6Bits( $b2 & 63);
}
// The last chunk, which may have padding:
if ($i < $srcLen) {
$chunk = \unpack('C*', Binary::safeSubstr($src, $i, $srcLen - $i));
$b0 = $chunk[1];
if ($i + 1 < $srcLen) {
$b1 = $chunk[2];
$dest .=
static::encode6Bits( $b0 >> 2 ) .
static::encode6Bits((($b0 << 4) | ($b1 >> 4)) & 63) .
static::encode6Bits( ($b1 << 2) & 63) . '=';
} else {
$dest .=
static::encode6Bits( $b0 >> 2) .
static::encode6Bits(($b0 << 4) & 63) . '==';
}
}
return $dest;
}
/**
* decode from base64 into binary
*
* Base64 character set "./[A-Z][a-z][0-9]"
*
* @param string $src
* @param bool $strictPadding
* @return string|bool
* @throws \RangeException
*/
public static function decode(string $src, bool $strictPadding = false): string
{
// Remove padding
$srcLen = Binary::safeStrlen($src);
if ($srcLen === 0) {
return '';
}
if ($strictPadding) {
if (($srcLen & 3) === 0) {
if ($src[$srcLen - 1] === '=') {
$srcLen--;
if ($src[$srcLen - 1] === '=') {
$srcLen--;
}
}
}
if (($srcLen & 3) === 1) {
throw new \RangeException(
'Incorrect padding'
);
}
if ($src[$srcLen - 1] === '=') {
throw new \RangeException(
'Incorrect padding'
);
}
} else {
$src = \rtrim($src, '=');
$srcLen = Binary::safeStrlen($src);
}
$err = 0;
$dest = '';
// Main loop (no padding):
for ($i = 0; $i + 4 <= $srcLen; $i += 4) {
$chunk = \unpack('C*', Binary::safeSubstr($src, $i, 4));
$c0 = static::decode6Bits($chunk[1]);
$c1 = static::decode6Bits($chunk[2]);
$c2 = static::decode6Bits($chunk[3]);
$c3 = static::decode6Bits($chunk[4]);
$dest .= \pack(
'CCC',
((($c0 << 2) | ($c1 >> 4)) & 0xff),
((($c1 << 4) | ($c2 >> 2)) & 0xff),
((($c2 << 6) | $c3 ) & 0xff)
);
$err |= ($c0 | $c1 | $c2 | $c3) >> 8;
}
// The last chunk, which may have padding:
if ($i < $srcLen) {
$chunk = \unpack('C*', Binary::safeSubstr($src, $i, $srcLen - $i));
$c0 = static::decode6Bits($chunk[1]);
if ($i + 2 < $srcLen) {
$c1 = static::decode6Bits($chunk[2]);
$c2 = static::decode6Bits($chunk[3]);
$dest .= \pack(
'CC',
((($c0 << 2) | ($c1 >> 4)) & 0xff),
((($c1 << 4) | ($c2 >> 2)) & 0xff)
);
$err |= ($c0 | $c1 | $c2) >> 8;
} elseif ($i + 1 < $srcLen) {
$c1 = static::decode6Bits($chunk[2]);
$dest .= \pack(
'C',
((($c0 << 2) | ($c1 >> 4)) & 0xff)
);
$err |= ($c0 | $c1) >> 8;
} elseif ($i < $srcLen && $strictPadding) {
$err |= 1;
}
}
if ($err !== 0) {
return false;
}
return $dest;
}
/**
* Uses bitwise operators instead of table-lookups to turn 6-bit integers
* into 8-bit integers.
*
* Base64 character set:
* [A-Z] [a-z] [0-9] + /
* 0x41-0x5a, 0x61-0x7a, 0x30-0x39, 0x2b, 0x2f
*
* @param int $src
* @return int
*/
protected static function decode6Bits(int $src): int
{
$ret = -1;
// if ($src > 0x40 && $src < 0x5b) $ret += $src - 0x41 + 1; // -64
$ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 64);
// if ($src > 0x60 && $src < 0x7b) $ret += $src - 0x61 + 26 + 1; // -70
$ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 70);
// if ($src > 0x2f && $src < 0x3a) $ret += $src - 0x30 + 52 + 1; // 5
$ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src + 5);
// if ($src == 0x2b) $ret += 62 + 1;
$ret += (((0x2a - $src) & ($src - 0x2c)) >> 8) & 63;
// if ($src == 0x2f) ret += 63 + 1;
$ret += (((0x2e - $src) & ($src - 0x30)) >> 8) & 64;
return $ret;
}
/**
* Uses bitwise operators instead of table-lookups to turn 8-bit integers
* into 6-bit integers.
*
* @param int $src
* @return string
*/
protected static function encode6Bits(int $src): string
{
$diff = 0x41;
// if ($src > 25) $diff += 0x61 - 0x41 - 26; // 6
$diff += ((25 - $src) >> 8) & 6;
// if ($src > 51) $diff += 0x30 - 0x61 - 26; // -75
$diff -= ((51 - $src) >> 8) & 75;
// if ($src > 61) $diff += 0x2b - 0x30 - 10; // -15
$diff -= ((61 - $src) >> 8) & 15;
// if ($src > 62) $diff += 0x2f - 0x2b - 1; // 3
$diff += ((62 - $src) >> 8) & 3;
return \pack('C', $src + $diff);
}
}

88
extlib/ParagonIE/ConstantTime/Base64DotSlash.php Normal file
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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;
/**
* Copyright (c) 2016 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* Class Base64DotSlash
* ./[A-Z][a-z][0-9]
*
* @package ParagonIE\ConstantTime
*/
abstract class Base64DotSlash extends Base64
{
/**
* Uses bitwise operators instead of table-lookups to turn 6-bit integers
* into 8-bit integers.
*
* Base64 character set:
* ./ [A-Z] [a-z] [0-9]
* 0x2e-0x2f, 0x41-0x5a, 0x61-0x7a, 0x30-0x39
*
* @param int $src
* @return int
*/
protected static function decode6Bits(int $src): int
{
$ret = -1;
// if ($src > 0x2d && $src < 0x30) ret += $src - 0x2e + 1; // -45
$ret += (((0x2d - $src) & ($src - 0x30)) >> 8) & ($src - 45);
// if ($src > 0x40 && $src < 0x5b) ret += $src - 0x41 + 2 + 1; // -62
$ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 62);
// if ($src > 0x60 && $src < 0x7b) ret += $src - 0x61 + 28 + 1; // -68
$ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 68);
// if ($src > 0x2f && $src < 0x3a) ret += $src - 0x30 + 54 + 1; // 7
$ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src + 7);
return $ret;
}
/**
* Uses bitwise operators instead of table-lookups to turn 8-bit integers
* into 6-bit integers.
*
* @param int $src
* @return string
*/
protected static function encode6Bits(int $src): string
{
$src += 0x2e;
// if ($src > 0x2f) $src += 0x41 - 0x30; // 17
$src += ((0x2f - $src) >> 8) & 17;
// if ($src > 0x5a) $src += 0x61 - 0x5b; // 6
$src += ((0x5a - $src) >> 8) & 6;
// if ($src > 0x7a) $src += 0x30 - 0x7b; // -75
$src -= ((0x7a - $src) >> 8) & 75;
return \pack('C', $src);
}
}

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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;
/**
* Copyright (c) 2016 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* Class Base64DotSlashOrdered
* ./[0-9][A-Z][a-z]
*
* @package ParagonIE\ConstantTime
*/
abstract class Base64DotSlashOrdered extends Base64
{
/**
* Uses bitwise operators instead of table-lookups to turn 6-bit integers
* into 8-bit integers.
*
* Base64 character set:
* [.-9] [A-Z] [a-z]
* 0x2e-0x39, 0x41-0x5a, 0x61-0x7a
*
* @param int $src
* @return int
*/
protected static function decode6Bits(int $src): int
{
$ret = -1;
// if ($src > 0x2d && $src < 0x3a) ret += $src - 0x2e + 1; // -45
$ret += (((0x2d - $src) & ($src - 0x3a)) >> 8) & ($src - 45);
// if ($src > 0x40 && $src < 0x5b) ret += $src - 0x41 + 12 + 1; // -52
$ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 52);
// if ($src > 0x60 && $src < 0x7b) ret += $src - 0x61 + 38 + 1; // -58
$ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 58);
return $ret;
}
/**
* Uses bitwise operators instead of table-lookups to turn 8-bit integers
* into 6-bit integers.
*
* @param int $src
* @return string
*/
protected static function encode6Bits(int $src): string
{
$src += 0x2e;
// if ($src > 0x39) $src += 0x41 - 0x3a; // 7
$src += ((0x39 - $src) >> 8) & 7;
// if ($src > 0x5a) $src += 0x61 - 0x5b; // 6
$src += ((0x5a - $src) >> 8) & 6;
return \pack('C', $src);
}
}

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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;
/**
* Copyright (c) 2016 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* Class Base64DotSlash
* ./[A-Z][a-z][0-9]
*
* @package ParagonIE\ConstantTime
*/
abstract class Base64UrlSafe extends Base64
{
/**
* Uses bitwise operators instead of table-lookups to turn 6-bit integers
* into 8-bit integers.
*
* Base64 character set:
* [A-Z] [a-z] [0-9] - _
* 0x41-0x5a, 0x61-0x7a, 0x30-0x39, 0x2d, 0x5f
*
* @param int $src
* @return int
*/
protected static function decode6Bits(int $src): int
{
$ret = -1;
// if ($src > 0x40 && $src < 0x5b) $ret += $src - 0x41 + 1; // -64
$ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 64);
// if ($src > 0x60 && $src < 0x7b) $ret += $src - 0x61 + 26 + 1; // -70
$ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 70);
// if ($src > 0x2f && $src < 0x3a) $ret += $src - 0x30 + 52 + 1; // 5
$ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src + 5);
// if ($src == 0x2c) $ret += 62 + 1;
$ret += (((0x2c - $src) & ($src - 0x2e)) >> 8) & 63;
// if ($src == 0x5f) ret += 63 + 1;
$ret += (((0x5e - $src) & ($src - 0x60)) >> 8) & 64;
return $ret;
}
/**
* Uses bitwise operators instead of table-lookups to turn 8-bit integers
* into 6-bit integers.
*
* @param int $src
* @return string
*/
protected static function encode6Bits(int $src): string
{
$diff = 0x41;
// if ($src > 25) $diff += 0x61 - 0x41 - 26; // 6
$diff += ((25 - $src) >> 8) & 6;
// if ($src > 51) $diff += 0x30 - 0x61 - 26; // -75
$diff -= ((51 - $src) >> 8) & 75;
// if ($src > 61) $diff += 0x2d - 0x30 - 10; // -13
$diff -= ((61 - $src) >> 8) & 13;
// if ($src > 62) $diff += 0x5f - 0x2b - 1; // 3
$diff += ((62 - $src) >> 8) & 49;
return \pack('C', $src + $diff);
}
}

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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;
/**
* Copyright (c) 2016 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* Class Binary
*
* Binary string operators that don't choke on
* mbstring.func_overload
*
* @package ParagonIE\ConstantTime
*/
abstract class Binary
{
/**
* Safe string length
*
* @ref mbstring.func_overload
*
* @param string $str
* @return int
*/
public static function safeStrlen(string $str): int
{
if (\function_exists('mb_strlen')) {
return \mb_strlen($str, '8bit');
} else {
return \strlen($str);
}
}
/**
* Safe substring
*
* @ref mbstring.func_overload
*
* @staticvar boolean $exists
* @param string $str
* @param int $start
* @param int $length
* @return string
* @throws \TypeError
*/
public static function safeSubstr(
string $str,
int $start = 0,
$length = null
): string {
if (\function_exists('mb_substr')) {
// mb_substr($str, 0, NULL, '8bit') returns an empty string on PHP
// 5.3, so we have to find the length ourselves.
if ($length === null) {
if ($start >= 0) {
$length = self::safeStrlen($str) - $start;
} else {
$length = -$start;
}
}
// $length calculation above might result in a 0-length string
if ($length === 0) {
return '';
}
return \mb_substr($str, $start, $length, '8bit');
}
if ($length === 0) {
return '';
}
// Unlike mb_substr(), substr() doesn't accept NULL for length
if ($length !== null) {
return \substr($str, $start, $length);
} else {
return \substr($str, $start);
}
}
}

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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;
/**
* Copyright (c) 2016 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* Interface EncoderInterface
* @package ParagonIE\ConstantTime
*/
interface EncoderInterface
{
/**
* Convert a binary string into a hexadecimal string without cache-timing
* leaks
*
* @param string $binString (raw binary)
* @return string
*/
public static function encode(string $binString): string;
/**
* Convert a binary string into a hexadecimal string without cache-timing
* leaks
*
* @param string $encodedString
* @param bool $strictPadding Error on invalid padding
* @return string (raw binary)
*/
public static function decode(string $encodedString, bool $strictPadding = false): string;
}

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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;
/**
* Copyright (c) 2016 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* Class Encoding
* @package ParagonIE\ConstantTime
*/
abstract class Encoding
{
/**
* RFC 4648 Base32 encoding
*
* @param $str
* @return string
*/
public static function base32Encode(string $str): string
{
return Base32::encode($str);
}
/**
* RFC 4648 Base32 encoding
*
* @param $str
* @return string
*/
public static function base32EncodeUpper(string $str): string
{
return Base32::encodeUpper($str);
}
/**
* RFC 4648 Base32 decoding
*
* @param $str
* @return string
*/
public static function base32Decode(string $str): string
{
return Base32::decode($str);
}
/**
* RFC 4648 Base32 decoding
*
* @param $str
* @return string
*/
public static function base32DecodeUpper(string $str): string
{
return Base32::decodeUpper($str);
}
/**
* RFC 4648 Base32 encoding
*
* @param $str
* @return string
*/
public static function base32HexEncode(string $str): string
{
return Base32Hex::encode($str);
}
/**
* RFC 4648 Base32 encoding
*
* @param $str
* @return string
*/
public static function base32HexEncodeUpper(string $str): string
{
return Base32Hex::encodeUpper($str);
}
/**
* RFC 4648 Base32 decoding
*
* @param $str
* @return string
*/
public static function base32HexDecode(string $str): string
{
return Base32Hex::decode($str);
}
/**
* RFC 4648 Base32 decoding
*
* @param $str
* @return string
*/
public static function base32HexDecodeUpper(string $str): string
{
return Base32Hex::decodeUpper($str);
}
/**
* RFC 4648 Base64 encoding
*
* @param $str
* @return string
*/
public static function base64Encode(string $str): string
{
return Base64::encode($str);
}
/**
* RFC 4648 Base32 decoding
*
* @param $str
* @return string
*/
public static function base64Decode(string $str): string
{
return Base64::decode($str);
}
/**
* Encode into Base64
*
* Base64 character set "./[A-Z][a-z][0-9]"
* @param $src
* @return string
*/
public static function base64EncodeDotSlash(string $str): string
{
return Base64DotSlash::encode($str);
}
/**
* Decode from base64 to raw binary
*
* Base64 character set "./[A-Z][a-z][0-9]"
*
* @param $src
* @return bool|string
* @throws \RangeException
*/
public static function base64DecodeDotSlash(string $str): string
{
return Base64DotSlash::decode($str);
}
/**
* Encode into Base64
*
* Base64 character set "[.-9][A-Z][a-z]" or "./[0-9][A-Z][a-z]"
* @param $src
* @return string
*/
public static function base64EncodeDotSlashOrdered(string $str): string
{
return Base64DotSlashOrdered::encode($str);
}
/**
* Decode from base64 to raw binary
*
* Base64 character set "[.-9][A-Z][a-z]" or "./[0-9][A-Z][a-z]"
*
* @param $src
* @return bool|string
* @throws \RangeException
*/
public static function base64DecodeDotSlashOrdered(string $str): string
{
return Base64DotSlashOrdered::decode($str);
}
/**
* Convert a binary string into a hexadecimal string without cache-timing
* leaks
*
* @param string $bin_string (raw binary)
* @return string
*/
public static function hexEncode(string $bin_string): string
{
return Hex::encode($bin_string);
}
/**
* Convert a hexadecimal string into a binary string without cache-timing
* leaks
*
* @param string $hex_string
* @return string (raw binary)
* @throws \RangeException
*/
public static function hexDecode(string $hex_string): string
{
return Hex::decode($hex_string);
}
/**
* Convert a binary string into a hexadecimal string without cache-timing
* leaks
*
* @param string $bin_string (raw binary)
* @return string
*/
public static function hexEncodeUpper(string $bin_string): string
{
return Hex::encodeUpper($bin_string);
}
/**
* Convert a binary string into a hexadecimal string without cache-timing
* leaks
*
* @param string $bin_string (raw binary)
* @return string
*/
public static function hexDecodeUpper(string $bin_string): string
{
return Hex::decode($bin_string);
}
}

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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;
/**
* Copyright (c) 2016 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* Class Hex
* @package ParagonIE\ConstantTime
*/
abstract class Hex implements EncoderInterface
{
/**
* Convert a binary string into a hexadecimal string without cache-timing
* leaks
*
* @param string $bin_string (raw binary)
* @return string
*/
public static function encode(string $bin_string): string
{
$hex = '';
$len = Binary::safeStrlen($bin_string);
for ($i = 0; $i < $len; ++$i) {
$chunk = \unpack('C', Binary::safeSubstr($bin_string, $i, 2));
$c = $chunk[1] & 0xf;
$b = $chunk[1] >> 4;
$hex .= pack(
'CC',
(87 + $b + ((($b - 10) >> 8) & ~38)),
(87 + $c + ((($c - 10) >> 8) & ~38))
);
}
return $hex;
}
/**
* Convert a binary string into a hexadecimal string without cache-timing
* leaks, returning uppercase letters (as per RFC 4648)
*
* @param string $bin_string (raw binary)
* @return string
*/
public static function encodeUpper(string $bin_string): string
{
$hex = '';
$len = Binary::safeStrlen($bin_string);
for ($i = 0; $i < $len; ++$i) {
$chunk = \unpack('C', Binary::safeSubstr($bin_string, $i, 2));
$c = $chunk[1] & 0xf;
$b = $chunk[1] >> 4;
$hex .= pack(
'CC',
(55 + $b + ((($b - 10) >> 8) & ~6)),
(55 + $c + ((($c - 10) >> 8) & ~6))
);
}
return $hex;
}
/**
* Convert a hexadecimal string into a binary string without cache-timing
* leaks
*
* @param string $hex_string
* @param bool $strictPadding
* @return string (raw binary)
* @throws \RangeException
*/
public static function decode(string $hexString, bool $strictPadding = false): string
{
$hex_pos = 0;
$bin = '';
$c_acc = 0;
$hex_len = Binary::safeStrlen($hexString);
$state = 0;
if (($hex_len & 1) !== 0) {
if ($strictPadding) {
throw new \RangeException(
'Expected an even number of hexadecimal characters'
);
} else {
$hexString = '0' . $hexString;
++$hex_len;
}
}
$chunk = \unpack('C*', $hexString);
while ($hex_pos < $hex_len) {
++$hex_pos;
$c = $chunk[$hex_pos];
$c_num = $c ^ 48;
$c_num0 = ($c_num - 10) >> 8;
$c_alpha = ($c & ~32) - 55;
$c_alpha0 = (($c_alpha - 10) ^ ($c_alpha - 16)) >> 8;
if (($c_num0 | $c_alpha0) === 0) {
throw new \RangeException(
'hexEncode() only expects hexadecimal characters'
);
}
$c_val = ($c_num0 & $c_num) | ($c_alpha & $c_alpha0);
if ($state === 0) {
$c_acc = $c_val * 16;
} else {
$bin .= \pack('C', $c_acc | $c_val);
}
$state ^= 1;
}
return $bin;
}
}

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<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime;
/**
* Copyright (c) 2016 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* Class RFC4648
*
* This class conforms strictly to the RFC
*
* @package ParagonIE\ConstantTime
*/
abstract class RFC4648
{
/**
* RFC 4648 Base64 encoding
*
* "foo" -> "Zm9v"
*
* @param string $str
* @return string
*/
public function base64Encode(string $str): string
{
return Base64::encode($str);
}
/**
* RFC 4648 Base64 decoding
*
* "Zm9v" -> "foo"
*
* @param string $str
* @return string
*/
public function base64Decode(string $str): string
{
return Base64::decode($str, true);
}
/**
* RFC 4648 Base64 (URL Safe) encoding
*
* "foo" -> "Zm9v"
*
* @param string $str
* @return string
*/
public function base64UrlSafeEncode(string $str): string
{
return Base64UrlSafe::encode($str);
}
/**
* RFC 4648 Base64 (URL Safe) decoding
*
* "Zm9v" -> "foo"
*
* @param string $str
* @return string
*/
public function base64UrlSafeDecode(string $str): string
{
return Base64UrlSafe::decode($str, true);
}
/**
* RFC 4648 Base32 encoding
*
* "foo" -> "MZXW6==="
*
* @param string $str
* @return string
*/
public function base32Encode(string $str): string
{
return Base32::encodeUpper($str);
}
/**
* RFC 4648 Base32 encoding
*
* "MZXW6===" -> "foo"
*
* @param string $str
* @return string
*/
public function base32Decode(string $str): string
{
return Base32::decodeUpper($str, true);
}
/**
* RFC 4648 Base32-Hex encoding
*
* "foo" -> "CPNMU==="
*
* @param string $str
* @return string
*/
public function base32HexEncode(string $str): string
{
return Base32::encodeUpper($str);
}
/**
* RFC 4648 Base32-Hex decoding
*
* "CPNMU===" -> "foo"
*
* @param string $str
* @return string
*/
public function base32HexDecode(string $str): string
{
return Base32::decodeUpper($str, true);
}
/**
* RFC 4648 Base16 decoding
*
* "foo" -> "666F6F"
*
* @param string $str
* @return string
*/
public function base16Encode(string $str): string
{
return Hex::encodeUpper($str);
}
/**
* RFC 4648 Base16 decoding
*
* "666F6F" -> "foo"
*
* @param string $str
* @return string
*/
public function base16Decode(string $str): string
{
return Hex::decode($str, true);
}
}

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@ -0,0 +1,48 @@
The MIT License (MIT)
Copyright (c) 2016 Paragon Initiative Enterprises
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
------------------------------------------------------------------------------
This library was based on the work of Steve "Sc00bz" Thomas.
------------------------------------------------------------------------------
The MIT License (MIT)
Copyright (c) 2014 Steve Thomas
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.