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<?php |
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/** |
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* Hash |
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* |
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* Hashing shorthands. |
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* |
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* @package core |
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* @author [email protected] |
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* @copyright Caffeina srl - 2015 - http://caffeina.it |
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*/ |
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class Hash { |
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use Module; |
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/** |
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* Create ah hash for payload |
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* @param mixed $payload The payload string/object/array |
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* @param integer $method The hashing method, default is "md5" |
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* @param bool $raw_output When set to TRUE, outputs raw binary data. FALSE outputs lowercase hexits. |
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* @return string The hash string |
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*/ |
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public static function make($payload, $method = 'md5', $raw_output = false) { |
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return $method == 'murmur' ? static::murmur(serialize($payload)) : hash($method, serialize($payload), $raw_output); |
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} |
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/** |
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* Verify if given payload matches hash |
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* @param mixed $payload The payload string/object/array |
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* @param string $hash The hash string |
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* @param integer $method The hashing method |
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* @return bool Returns `true` if payload matches hash |
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*/ |
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public static function verify($payload, $hash, $method = 'md5') { |
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return static::make($payload, $method) == $hash; |
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} |
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/** |
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* List registered hashing algorithms |
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* |
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* @method methods |
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* |
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* @return array Array containing the list of supported hashing algorithms. |
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*/ |
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public static function methods() { |
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// Merge PHP provided algos with ours (murmur) |
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return array_merge(hash_algos(), ['murmur','murmurhash3']); |
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} |
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/** |
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* Check if an alghoritm is registered in current PHP |
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* |
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* @method can |
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* |
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* @param string $algo The hashing algorithm name |
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* |
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* @return bool |
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*/ |
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public static function can($algo) { |
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// Faster than : in_array(explode(',',implode(',',static::methods()))) |
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return strpos(implode(',',static::methods()).',', "$algo,") !== false; |
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} |
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/** |
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* Static magic for creating hashes with a specified algorithm. |
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* |
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* See [hash-algos](http://php.net/manual/it/function.hash-algos.php) for a list of algorithms |
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*/ |
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public static function __callStatic($method, $params) { |
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return self::make(current($params), $method); |
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} |
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public static function uuid($type = 4, $namespace = '', $name = '') { |
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switch ($type) { |
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View Code Duplication |
case 3:if (preg_match('/^\{?[0-9a-f]{8}\-?[0-9a-f]{4}\-?[0-9a-f]{4}\-?' . |
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'[0-9a-f]{4}\-?[0-9a-f]{12}\}?$/Si', $namespace) !== 1) { |
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return false; |
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} |
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$nhex = str_replace(array('-', '{', '}'), '', $namespace); |
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$nstr = '';for ($i = 0; $i < strlen($nhex); $i += 2) { |
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$nstr .= chr(hexdec($nhex[$i] . $nhex[$i + 1])); |
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} |
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$hash = md5($nstr . $name); |
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return sprintf('%08s-%04s-%04x-%04x-%12s', |
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substr($hash, 0, 8), substr($hash, 8, 4), |
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(hexdec(substr($hash, 12, 4)) & 0x0fff) | 0x3000, |
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(hexdec(substr($hash, 16, 4)) & 0x3fff) | 0x8000, |
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substr($hash, 20, 12)); |
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View Code Duplication |
case 5:if (preg_match('/^\{?[0-9a-f]{8}\-?[0-9a-f]{4}\-?[0-9a-f]{4}\-?' . |
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'[0-9a-f]{4}\-?[0-9a-f]{12}\}?$/Si', $namespace) !== 1) { |
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return false; |
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} |
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$nhex = str_replace(array('-', '{', '}'), '', $namespace); |
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$nstr = '';for ($i = 0; $i < strlen($nhex); $i += 2) { |
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$nstr .= chr(hexdec($nhex[$i] . $nhex[$i + 1])); |
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} |
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$hash = sha1($nstr . $name); |
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return sprintf('%08s-%04s-%04x-%04x-%12s', |
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substr($hash, 0, 8), substr($hash, 8, 4), |
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(hexdec(substr($hash, 12, 4)) & 0x0fff) | 0x5000, |
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(hexdec(substr($hash, 16, 4)) & 0x3fff) | 0x8000, |
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substr($hash, 20, 12)); |
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default:case 4:return sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x', |
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mt_rand(0, 0xffff), mt_rand(0, 0xffff), mt_rand(0, 0xffff), |
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mt_rand(0, 0x0fff) | 0x4000, mt_rand(0, 0x3fff) | 0x8000, |
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mt_rand(0, 0xffff), mt_rand(0, 0xffff), mt_rand(0, 0xffff)); |
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} |
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} |
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public static function murmur($key, $seed = 0, $as_integer=false) { |
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$key = array_values(unpack('C*',(string) $key)); |
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$klen = count($key); |
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$h1 = (int)$seed; |
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for ($i=0,$bytes=$klen-($remainder=$klen&3) ; $i<$bytes ; ) { |
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$k1 = $key[$i] |
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| ($key[++$i] << 8) |
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| ($key[++$i] << 16) |
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| ($key[++$i] << 24); |
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++$i; |
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$k1 = (((($k1 & 0xffff) * 0xcc9e2d51) + ((((($k1 >= 0 ? $k1 >> 16 : (($k1 & 0x7fffffff) >> 16) | 0x8000)) * 0xcc9e2d51) & 0xffff) << 16))) & 0xffffffff; |
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$k1 = $k1 << 15 | ($k1 >= 0 ? $k1 >> 17 : (($k1 & 0x7fffffff) >> 17) | 0x4000); |
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$k1 = (((($k1 & 0xffff) * 0x1b873593) + ((((($k1 >= 0 ? $k1 >> 16 : (($k1 & 0x7fffffff) >> 16) | 0x8000)) * 0x1b873593) & 0xffff) << 16))) & 0xffffffff; |
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$h1 ^= $k1; |
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$h1 = $h1 << 13 | ($h1 >= 0 ? $h1 >> 19 : (($h1 & 0x7fffffff) >> 19) | 0x1000); |
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$h1b = (((($h1 & 0xffff) * 5) + ((((($h1 >= 0 ? $h1 >> 16 : (($h1 & 0x7fffffff) >> 16) | 0x8000)) * 5) & 0xffff) << 16))) & 0xffffffff; |
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$h1 = ((($h1b & 0xffff) + 0x6b64) + ((((($h1b >= 0 ? $h1b >> 16 : (($h1b & 0x7fffffff) >> 16) | 0x8000)) + 0xe654) & 0xffff) << 16)); |
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} |
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$k1 = 0; |
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switch ($remainder) { |
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case 3: $k1 ^= $key[$i + 2] << 16; |
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case 2: $k1 ^= $key[$i + 1] << 8; |
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case 1: $k1 ^= $key[$i]; |
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$k1 = ((($k1 & 0xffff) * 0xcc9e2d51) + ((((($k1 >= 0 ? $k1 >> 16 : (($k1 & 0x7fffffff) >> 16) | 0x8000)) * 0xcc9e2d51) & 0xffff) << 16)) & 0xffffffff; |
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$k1 = $k1 << 15 | ($k1 >= 0 ? $k1 >> 17 : (($k1 & 0x7fffffff) >> 17) | 0x4000); |
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$k1 = ((($k1 & 0xffff) * 0x1b873593) + ((((($k1 >= 0 ? $k1 >> 16 : (($k1 & 0x7fffffff) >> 16) | 0x8000)) * 0x1b873593) & 0xffff) << 16)) & 0xffffffff; |
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$h1 ^= $k1; |
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} |
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$h1 ^= $klen; |
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$h1 ^= ($h1 >= 0 ? $h1 >> 16 : (($h1 & 0x7fffffff) >> 16) | 0x8000); |
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$h1 = ((($h1 & 0xffff) * 0x85ebca6b) + ((((($h1 >= 0 ? $h1 >> 16 : (($h1 & 0x7fffffff) >> 16) | 0x8000)) * 0x85ebca6b) & 0xffff) << 16)) & 0xffffffff; |
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$h1 ^= ($h1 >= 0 ? $h1 >> 13 : (($h1 & 0x7fffffff) >> 13) | 0x40000); |
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$h1 = (((($h1 & 0xffff) * 0xc2b2ae35) + ((((($h1 >= 0 ? $h1 >> 16 : (($h1 & 0x7fffffff) >> 16) | 0x8000)) * 0xc2b2ae35) & 0xffff) << 16))) & 0xffffffff; |
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$h1 ^= ($h1 >= 0 ? $h1 >> 16 : (($h1 & 0x7fffffff) >> 16) | 0x8000); |
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return $as_integer ? $h1 : base_convert($h1 ,10, 32); |
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} |
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public static function random($bytes=9){ |
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return strtr(base64_encode(static::random_bytes($bytes)),'+/=','-_'); |
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} |
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public static function random_bytes($bytes){ |
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static $randf = null; |
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if (function_exists('random_bytes')) { |
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return \random_bytes($bytes); |
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} else if (function_exists('mcrypt_create_iv')) { |
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return @\mcrypt_create_iv($bytes, MCRYPT_DEV_URANDOM); |
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} else { |
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if (null === $randf) { |
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if ($randf = fopen('/dev/urandom', 'rb')) { |
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$st = fstat($randf); |
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function_exists('stream_set_read_buffer') |
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&& stream_set_read_buffer($randf, 8); |
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function_exists('stream_set_chunk_size') |
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&& stream_set_chunk_size($randf, 8); |
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if (($st['mode'] & 0170000) !== 020000) { |
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fclose($randf); |
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$randf = false; |
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} |
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} |
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} |
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if ($randf) { |
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$remaining = $bytes; |
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$buf = ''; |
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do { |
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$read = fread($randf, $remaining); |
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if ($read === false) { |
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$buf = false; |
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break; |
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} |
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$remaining -= strlen($read); |
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$buf .= $read; |
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} while ($remaining > 0); |
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if ($buf !== false) { |
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if (strlen($buf) === $bytes) { |
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return $buf; |
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} |
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} |
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} |
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} |
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} |
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} |
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caffeina-core /
core
