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Edit File : UrlSafe.php \| Size : 8.28 KB
<?php /** * Class ParagonIE_Sodium_Core_Base64UrlSafe * * Copyright (c) 2016 - 2018 Paragon Initiative Enterprises. * Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com) / class ParagonIE_Sodium_Core_Base64_UrlSafe { // COPY ParagonIE_Sodium_Core_Base64_Common STARTING HERE /* * Encode into Base64 * * Base64 character set "[A-Z][a-z][0-9]+/" * * @param string $src * @return string * @throws TypeError / public static function encode($src) { return self::doEncode($src, true); } /* * Encode into Base64, no = padding * * Base64 character set "[A-Z][a-z][0-9]+/" * * @param string $src * @return string * @throws TypeError / public static function encodeUnpadded($src) { return self::doEncode($src, false); } /* * @param string $src * @param bool $pad Include = padding? * @return string * @throws TypeError / protected static function doEncode($src, $pad = true) { $dest = ''; $srcLen = ParagonIE_Sodium_Core_Util::strlen($src); // Main loop (no padding): for ($i = 0; $i + 3 <= $srcLen; $i += 3) { /* @var array<int, int> $chunk / $chunk = unpack('C', ParagonIE_Sodium_Core_Util::substr($src, $i, 3)); $b0 = $chunk[1]; $b1 = $chunk[2]; $b2 = $chunk[3]; $dest .= self::encode6Bits( $b0 >> 2 ) . self::encode6Bits((($b0 << 4) \| ($b1 >> 4)) & 63) . self::encode6Bits((($b1 << 2) \| ($b2 >> 6)) & 63) . self::encode6Bits( $b2 & 63); } // The last chunk, which may have padding: if ($i < $srcLen) { /** @var array<int, int> $chunk / $chunk = unpack('C', ParagonIE_Sodium_Core_Util::substr($src, $i, $srcLen - $i)); $b0 = $chunk[1]; if ($i + 1 < $srcLen) { $b1 = $chunk[2]; $dest .= self::encode6Bits($b0 >> 2) . self::encode6Bits((($b0 << 4) \| ($b1 >> 4)) & 63) . self::encode6Bits(($b1 << 2) & 63); if ($pad) { $dest .= '='; } } else { $dest .= self::encode6Bits( $b0 >> 2) . self::encode6Bits(($b0 << 4) & 63); if ($pad) { $dest .= '=='; } } } return $dest; } /** * decode from base64 into binary * * Base64 character set "./[A-Z][a-z][0-9]" * * @param string $src * @param bool $strictPadding * @return string * @throws RangeException * @throws TypeError * @psalm-suppress RedundantCondition / public static function decode($src, $strictPadding = false) { // Remove padding $srcLen = ParagonIE_Sodium_Core_Util::strlen($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, '='); $srcLen = ParagonIE_Sodium_Core_Util::strlen($src); } $err = 0; $dest = ''; // Main loop (no padding): for ($i = 0; $i + 4 <= $srcLen; $i += 4) { /* @var array<int, int> $chunk / $chunk = unpack('C', ParagonIE_Sodium_Core_Util::substr($src, $i, 4)); $c0 = self::decode6Bits($chunk[1]); $c1 = self::decode6Bits($chunk[2]); $c2 = self::decode6Bits($chunk[3]); $c3 = self::decode6Bits($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) { /** @var array<int, int> $chunk / $chunk = unpack('C', ParagonIE_Sodium_Core_Util::substr($src, $i, $srcLen - $i)); $c0 = self::decode6Bits($chunk[1]); if ($i + 2 < $srcLen) { $c1 = self::decode6Bits($chunk[2]); $c2 = self::decode6Bits($chunk[3]); $dest .= pack( 'CC', ((($c0 << 2) \| ($c1 >> 4)) & 0xff), ((($c1 << 4) \| ($c2 >> 2)) & 0xff) ); $err \|= ($c0 \| $c1 \| $c2) >> 8; } elseif ($i + 1 < $srcLen) { $c1 = self::decode6Bits($chunk[2]); $dest .= pack( 'C', ((($c0 << 2) \| ($c1 >> 4)) & 0xff) ); $err \|= ($c0 \| $c1) >> 8; } elseif ($i < $srcLen && $strictPadding) { $err \|= 1; } } /** @var bool $check / $check = ($err === 0); if (!$check) { throw new RangeException( 'Base64::decode() only expects characters in the correct base64 alphabet' ); } return $dest; } /* * @param string $encodedString * @return string / public static function decodeNoPadding( #[SensitiveParameter] $encodedString ) { $srcLen = strlen($encodedString); if ($srcLen === 0) { return ''; } if (($srcLen & 3) === 0) { // If $strLen is not zero, and it is divisible by 4, then it's at least 4. if ($encodedString[$srcLen - 1] === '=' \|\| $encodedString[$srcLen - 2] === '=') { throw new InvalidArgumentException( "decodeNoPadding() doesn't tolerate padding" ); } } return self::decode( $encodedString, true ); } // COPY ParagonIE_Sodium_Core_Base64_Common ENDING HERE /* * 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 $src * @return int / protected static function decode6Bits($src) { $ret = -1; // if ($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 $src * @return string */ protected static function encode6Bits($src) { $diff = 0x41; // if ($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); } } Back

Edit File : UrlSafe.php | Size : 8.28 KB

<?php

/**
 * Class ParagonIE_Sodium_Core_Base64UrlSafe
 *
 *  Copyright (c) 2016 - 2018 Paragon Initiative Enterprises.
 *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
 */
class ParagonIE_Sodium_Core_Base64_UrlSafe
{
    // COPY ParagonIE_Sodium_Core_Base64_Common STARTING HERE
    /**
     * Encode into Base64
     *
     * Base64 character set "[A-Z][a-z][0-9]+/"
     *
     * @param string $src
     * @return string
     * @throws TypeError
     */
    public static function encode($src)
    {
        return self::doEncode($src, true);
    }

/**
     * Encode into Base64, no = padding
     *
     * Base64 character set "[A-Z][a-z][0-9]+/"
     *
     * @param string $src
     * @return string
     * @throws TypeError
     */
    public static function encodeUnpadded($src)
    {
        return self::doEncode($src, false);
    }

/**
     * @param string $src
     * @param bool $pad   Include = padding?
     * @return string
     * @throws TypeError
     */
    protected static function doEncode($src, $pad = true)
    {
        $dest = '';
        $srcLen = ParagonIE_Sodium_Core_Util::strlen($src);
        // Main loop (no padding):
        for ($i = 0; $i + 3 <= $srcLen; $i += 3) {
            /** @var array<int, int> $chunk */
            $chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, 3));
            $b0 = $chunk[1];
            $b1 = $chunk[2];
            $b2 = $chunk[3];

$dest .=
                self::encode6Bits(               $b0 >> 2       ) .
                self::encode6Bits((($b0 << 4) | ($b1 >> 4)) & 63) .
                self::encode6Bits((($b1 << 2) | ($b2 >> 6)) & 63) .
                self::encode6Bits(  $b2                     & 63);
        }
        // The last chunk, which may have padding:
        if ($i < $srcLen) {
            /** @var array<int, int> $chunk */
            $chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, $srcLen - $i));
            $b0 = $chunk[1];
            if ($i + 1 < $srcLen) {
                $b1 = $chunk[2];
                $dest .=
                    self::encode6Bits($b0 >> 2) .
                    self::encode6Bits((($b0 << 4) | ($b1 >> 4)) & 63) .
                    self::encode6Bits(($b1 << 2) & 63);
                if ($pad) {
                    $dest .= '=';
                }
            } else {
                $dest .=
                    self::encode6Bits( $b0 >> 2) .
                    self::encode6Bits(($b0 << 4) & 63);
                if ($pad) {
                    $dest .= '==';
                }
            }
        }
        return $dest;
    }

/**
     * decode from base64 into binary
     *
     * Base64 character set "./[A-Z][a-z][0-9]"
     *
     * @param string $src
     * @param bool $strictPadding
     * @return string
     * @throws RangeException
     * @throws TypeError
     * @psalm-suppress RedundantCondition
     */
    public static function decode($src, $strictPadding = false)
    {
        // Remove padding
        $srcLen = ParagonIE_Sodium_Core_Util::strlen($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, '=');
            $srcLen =  ParagonIE_Sodium_Core_Util::strlen($src);
        }

$err = 0;
        $dest = '';
        // Main loop (no padding):
        for ($i = 0; $i + 4 <= $srcLen; $i += 4) {
            /** @var array<int, int> $chunk */
            $chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, 4));
            $c0 = self::decode6Bits($chunk[1]);
            $c1 = self::decode6Bits($chunk[2]);
            $c2 = self::decode6Bits($chunk[3]);
            $c3 = self::decode6Bits($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) {
            /** @var array<int, int> $chunk */
            $chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, $srcLen - $i));
            $c0 = self::decode6Bits($chunk[1]);

if ($i + 2 < $srcLen) {
                $c1 = self::decode6Bits($chunk[2]);
                $c2 = self::decode6Bits($chunk[3]);
                $dest .= pack(
                    'CC',
                    ((($c0 << 2) | ($c1 >> 4)) & 0xff),
                    ((($c1 << 4) | ($c2 >> 2)) & 0xff)
                );
                $err |= ($c0 | $c1 | $c2) >> 8;
            } elseif ($i + 1 < $srcLen) {
                $c1 = self::decode6Bits($chunk[2]);
                $dest .= pack(
                    'C',
                    ((($c0 << 2) | ($c1 >> 4)) & 0xff)
                );
                $err |= ($c0 | $c1) >> 8;
            } elseif ($i < $srcLen && $strictPadding) {
                $err |= 1;
            }
        }
        /** @var bool $check */
        $check = ($err === 0);
        if (!$check) {
            throw new RangeException(
                'Base64::decode() only expects characters in the correct base64 alphabet'
            );
        }
        return $dest;
    }

/**
     * @param string $encodedString
     * @return string
     */
    public static function decodeNoPadding(
        #[SensitiveParameter]
        $encodedString
    ) {
        $srcLen = strlen($encodedString);
        if ($srcLen === 0) {
            return '';
        }
        if (($srcLen & 3) === 0) {
            // If $strLen is not zero, and it is divisible by 4, then it's at least 4.
            if ($encodedString[$srcLen - 1] === '=' || $encodedString[$srcLen - 2] === '=') {
                throw new InvalidArgumentException(
                    "decodeNoPadding() doesn't tolerate padding"
                );
            }
        }
        return self::decode(
            $encodedString,
            true
        );
    }

// COPY ParagonIE_Sodium_Core_Base64_Common ENDING HERE
    /**
     * 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 $src
     * @return int
     */
    protected static function decode6Bits($src)
    {
        $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 $src
     * @return string
     */
    protected static function encode6Bits($src)
    {
        $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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