PHP的AES加密算法完整实例
发布时间：2020-12-12 21:38:33 所属栏目：PHP教程 来源：网络整理
导读：本篇章节讲解PHP的AES加密算法。供大家参考研究具体如下： key = hash('sha256',$this->key,true); //echo $this->key.' '; } function encrypt($str) { $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128,'',MCRYPT_MODE_CBC,''); mcrypt_generic_in
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本篇章节讲解PHP的AES加密算法。分享给大家供大家参考，具体如下： key = hash('sha256',$this->key,true);
//echo $this->key.'
'; } function encrypt($str) { $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128,'',MCRYPT_MODE_CBC,''); mcrypt_generic_init($td,$this->hexToStr($this->hex_iv)); $block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128,MCRYPT_MODE_CBC); $pad = $block - (strlen($str) % $block); $str .= str_repeat(chr($pad),$pad); $encrypted = mcrypt_generic($td,$str); mcrypt_generic_deinit($td); mcrypt_module_close($td); return base64_encode($encrypted); } function decrypt($code) { $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128,$this->hexToStr($this->hex_iv)); $str = mdecrypt_generic($td,base64_decode($code)); $block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128,MCRYPT_MODE_CBC); mcrypt_generic_deinit($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,strlen($string) - $slast); return $string; } else { return false; } } function hexToStr($hex) { $string=''; for ($i=0; $i < strlen($hex)-1; $i+=2) { $string .= chr(hexdec($hex[$i].$hex[$i+1])); } return $string; } } $encryption = new MCrypt(); echo $encryption->encrypt('123456') . " "; echo $encryption->decrypt('tpyxISJ83dqEs3uw8bN/+w=='); ?>
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