class aes_mcrypt { private $hex_iv = '00000000000000000000000000000000'; # converted JAVA byte code in to HEX and placed it here function __construct($key) { $this->key = hash('sha256',$key, true); } function encrypt($str) { $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, ''); mcrypt_generic_init($td, $this->key, $this->hexToStr($this->hex_iv)); //$block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYP<a style="color:transparent">、本文来源gao($daima.com搞@代@#码$网</a><big>搞gaodaima代码</big>T_MODE_CBC); $block = mcrypt_enc_get_block_size($td); $str = $this->addpadding($str,$block); $encrypted = mcrypt_generic($td, $str); mcrypt_generic_deinit($td); mcrypt_module_close($td); return base64_encode($encrypted); } function decrypt($code) { $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, ''); mcrypt_generic_init($td, $this->key, $this->hexToStr($this->hex_iv)); $str = mdecrypt_generic($td, base64_decode($code)); mcrypt_generic_deinit($td); mcrypt_module_close($td); return $this->strippadding($str); } /* For PKCS7 padding */ private function addpadding($string, $blocksize = 16) { $len = strlen($string); $pad = $blocksize - ($len % $blocksize); $string .= str_repeat(chr($pad), $pad); return $string; } private function strippadding($string) { $slast = ord(substr($string, -1)); $slastc = chr($slast); $pcheck = substr($string, -$slast); if (preg_match("/$slastc{" . $slast . "}/", $string)) { $string = substr($string, 0, strlen($string) - $slast); return $string; } else { return false; } } public function hexToStr($hex) { $string=''; for ($i=0; $i < strlen($hex)-1; $i+=2) { $string .= chr(hexdec($hex[$i].$hex[$i+1])); } return $string; }}
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转载请注明原文链接：php aes cbc
转载请注明原文链接：php aes cbc
