Service

<?php namespace PhpOffice\PhpSpreadsheet\Reader\Xls; class MD5 { /** * @var int */ private $a; /** * @var int */ private $b; /** * @var int */ private $c; /** * @var int */ private $d; /** * @var int */ private static $allOneBits; /** * MD5 stream constructor. */ public function __construct() { self::$allOneBits = self::signedInt(0xffffffff); $this->reset(); } /** * Reset the MD5 stream context. */ public function reset(): void { $this->a = 0x67452301; $this->b = self::signedInt(0xEFCDAB89); $this->c = self::signedInt(0x98BADCFE); $this->d = 0x10325476; } /** * Get MD5 stream context. * * @return string */ public function getContext() { $s = ''; foreach (['a', 'b', 'c', 'd'] as $i) { $v = $this->{$i}; $s .= chr($v & 0xff); $s .= chr(($v >> 8) & 0xff); $s .= chr(($v >> 16) & 0xff); $s .= chr(($v >> 24) & 0xff); } return $s; } /** * Add data to context. * * @param string $data Data to add */ public function add(string $data): void { // @phpstan-ignore-next-line $words = array_values(unpack('V16', $data)); $A = $this->a; $B = $this->b; $C = $this->c; $D = $this->d; $F = [self::class, 'f']; $G = [self::class, 'g']; $H = [self::class, 'h']; $I = [self::class, 'i']; // ROUND 1 self::step($F, $A, $B, $C, $D, $words[0], 7, 0xd76aa478); self::step($F, $D, $A, $B, $C, $words[1], 12, 0xe8c7b756); self::step($F, $C, $D, $A, $B, $words[2], 17, 0x242070db); self::step($F, $B, $C, $D, $A, $words[3], 22, 0xc1bdceee); self::step($F, $A, $B, $C, $D, $words[4], 7, 0xf57c0faf); self::step($F, $D, $A, $B, $C, $words[5], 12, 0x4787c62a); self::step($F, $C, $D, $A, $B, $words[6], 17, 0xa8304613); self::step($F, $B, $C, $D, $A, $words[7], 22, 0xfd469501); self::step($F, $A, $B, $C, $D, $words[8], 7, 0x698098d8); self::step($F, $D, $A, $B, $C, $words[9], 12, 0x8b44f7af); self::step($F, $C, $D, $A, $B, $words[10], 17, 0xffff5bb1); self::step($F, $B, $C, $D, $A, $words[11], 22, 0x895cd7be); self::step($F, $A, $B, $C, $D, $words[12], 7, 0x6b901122); self::step($F, $D, $A, $B, $C, $words[13], 12, 0xfd987193); self::step($F, $C, $D, $A, $B, $words[14], 17, 0xa679438e); self::step($F, $B, $C, $D, $A, $words[15], 22, 0x49b40821); // ROUND 2 self::step($G, $A, $B, $C, $D, $words[1], 5, 0xf61e2562); self::step($G, $D, $A, $B, $C, $words[6], 9, 0xc040b340); self::step($G, $C, $D, $A, $B, $words[11], 14, 0x265e5a51); self::step($G, $B, $C, $D, $A, $words[0], 20, 0xe9b6c7aa); self::step($G, $A, $B, $C, $D, $words[5], 5, 0xd62f105d); self::step($G, $D, $A, $B, $C, $words[10], 9, 0x02441453); self::step($G, $C, $D, $A, $B, $words[15], 14, 0xd8a1e681); self::step($G, $B, $C, $D, $A, $words[4], 20, 0xe7d3fbc8); self::step($G, $A, $B, $C, $D, $words[9], 5, 0x21e1cde6); self::step($G, $D, $A, $B, $C, $words[14], 9, 0xc33707d6); self::step($G, $C, $D, $A, $B, $words[3], 14, 0xf4d50d87); self::step($G, $B, $C, $D, $A, $words[8], 20, 0x455a14ed); self::step($G, $A, $B, $C, $D, $words[13], 5, 0xa9e3e905); self::step($G, $D, $A, $B, $C, $words[2], 9, 0xfcefa3f8); self::step($G, $C, $D, $A, $B, $words[7], 14, 0x676f02d9); self::step($G, $B, $C, $D, $A, $words[12], 20, 0x8d2a4c8a); // ROUND 3 self::step($H, $A, $B, $C, $D, $words[5], 4, 0xfffa3942); self::step($H, $D, $A, $B, $C, $words[8], 11, 0x8771f681); self::step($H, $C, $D, $A, $B, $words[11], 16, 0x6d9d6122); self::step($H, $B, $C, $D, $A, $words[14], 23, 0xfde5380c); self::step($H, $A, $B, $C, $D, $words[1], 4, 0xa4beea44); self::step($H, $D, $A, $B, $C, $words[4], 11, 0x4bdecfa9); self::step($H, $C, $D, $A, $B, $words[7], 16, 0xf6bb4b60); self::step($H, $B, $C, $D, $A, $words[10], 23, 0xbebfbc70); self::step($H, $A, $B, $C, $D, $words[13], 4, 0x289b7ec6); self::step($H, $D, $A, $B, $C, $words[0], 11, 0xeaa127fa); self::step($H, $C, $D, $A, $B, $words[3], 16, 0xd4ef3085); self::step($H, $B, $C, $D, $A, $words[6], 23, 0x04881d05); self::step($H, $A, $B, $C, $D, $words[9], 4, 0xd9d4d039); self::step($H, $D, $A, $B, $C, $words[12], 11, 0xe6db99e5); self::step($H, $C, $D, $A, $B, $words[15], 16, 0x1fa27cf8); self::step($H, $B, $C, $D, $A, $words[2], 23, 0xc4ac5665); // ROUND 4 self::step($I, $A, $B, $C, $D, $words[0], 6, 0xf4292244); self::step($I, $D, $A, $B, $C, $words[7], 10, 0x432aff97); self::step($I, $C, $D, $A, $B, $words[14], 15, 0xab9423a7); self::step($I, $B, $C, $D, $A, $words[5], 21, 0xfc93a039); self::step($I, $A, $B, $C, $D, $words[12], 6, 0x655b59c3); self::step($I, $D, $A, $B, $C, $words[3], 10, 0x8f0ccc92); self::step($I, $C, $D, $A, $B, $words[10], 15, 0xffeff47d); self::step($I, $B, $C, $D, $A, $words[1], 21, 0x85845dd1); self::step($I, $A, $B, $C, $D, $words[8], 6, 0x6fa87e4f); self::step($I, $D, $A, $B, $C, $words[15], 10, 0xfe2ce6e0); self::step($I, $C, $D, $A, $B, $words[6], 15, 0xa3014314); self::step($I, $B, $C, $D, $A, $words[13], 21, 0x4e0811a1); self::step($I, $A, $B, $C, $D, $words[4], 6, 0xf7537e82); self::step($I, $D, $A, $B, $C, $words[11], 10, 0xbd3af235); self::step($I, $C, $D, $A, $B, $words[2], 15, 0x2ad7d2bb); self::step($I, $B, $C, $D, $A, $words[9], 21, 0xeb86d391); $this->a = ($this->a + $A) & self::$allOneBits; $this->b = ($this->b + $B) & self::$allOneBits; $this->c = ($this->c + $C) & self::$allOneBits; $this->d = ($this->d + $D) & self::$allOneBits; } private static function f(int $X, int $Y, int $Z): int { return ($X & $Y) | ((~$X) & $Z); // X AND Y OR NOT X AND Z } private static function g(int $X, int $Y, int $Z): int { return ($X & $Z) | ($Y & (~$Z)); // X AND Z OR Y AND NOT Z } private static function h(int $X, int $Y, int $Z): int { return $X ^ $Y ^ $Z; // X XOR Y XOR Z } private static function i(int $X, int $Y, int $Z): int { return $Y ^ ($X | (~$Z)); // Y XOR (X OR NOT Z) } /** @param float|int $t may be float on 32-bit system */ private static function step(callable $func, int &$A, int $B, int $C, int $D, int $M, int $s, $t): void { $t = self::signedInt($t); $A = (int) ($A + call_user_func($func, $B, $C, $D) + $M + $t) & self::$allOneBits; $A = self::rotate($A, $s); $A = (int) ($B + $A) & self::$allOneBits; } /** @param float|int $result may be float on 32-bit system */ private static function signedInt($result): int { return is_int($result) ? $result : (int) (PHP_INT_MIN + $result - 1 - PHP_INT_MAX); } private static function rotate(int $decimal, int $bits): int { $binary = str_pad(decbin($decimal), 32, '0', STR_PAD_LEFT); return self::signedInt(bindec(substr($binary, $bits) . substr($binary, 0, $bits))); } }

Service Section

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