php Aes 加密模式ECB填充pkcs5padding base64

逃离我推掉我的手 2022-11-12 01:59 405阅读 0赞

最近做支付项目用到了aes加密不过试了好多办法总是和官方给出的结果不一样,找了很久终于找到了

测试结果同 [http://tool.chacuo.net/cryptaes/][http_tool.chacuo.net_cryptaes]

转自:[https://blog.bitefu.net/post/143.html][https_blog.bitefu.net_post_143.html]

<?php
    /**
     * [Aes 加密，支持PHP5+]
     * 算法模式：ECB
     * 密钥长度：128
     * 补码方式：PKCS5Padding
     * 解密串编码方式：base64/十六进制
     * 编码 UTF-8
     */
    class Aes {
        public function encrypt($input, $key) {
            if (substr(PHP_VERSION, 0, 1) == '7') {
                return $this->opensslEncrypt($input,$key);
            }else{
                return $this->mcryptEncrypt($input,$key);
            }
        }
        public function decrypt($input, $key) {
            if (substr(PHP_VERSION, 0, 1) == '7') {
                return $this->opensslDecrypt($input,$key);
            }else{
                return $this->mcryptDecrypt($input,$key);
            }
        }
        /**
         * [encrypt description]
         * 使用mcrypt库进行加密
         * @param  [type] $input
         * @param  [type] $key
         * @return [type]
         */
        public function mcryptEncrypt($input, $key) {
            $size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
            $input = $this->pkcs5Pad($input, $size);
            $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
            $iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);//MCRYPT_DEV_URANDOM
            mcrypt_generic_init($td, $key, $iv);
            $data = mcrypt_generic($td, $input);
            mcrypt_generic_deinit($td);
            mcrypt_module_close($td);
            $data = base64_encode($data);
            return $data;
        }
        /**
         * [pkcs5Pad description]
         * @param  [type] $text
         * @param  [type] $blocksize
         * @return [type]
         */
        private function pkcs5Pad($text, $blocksize) {
            $pad = $blocksize - (strlen($text) % $blocksize);
            return $text . str_repeat(chr($pad), $pad);
        }
        /**
         * [decrypt description]
         * 使用mcrypt库进行解密
         * @param  [type] $sStr
         * @param  [type] $sKey
         * @return [type]
         */
        public function mcryptDecrypt($sStr, $sKey) {
            $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB), MCRYPT_RAND);//MCRYPT_DEV_URANDOM
            $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $sKey, base64_decode($sStr), MCRYPT_MODE_ECB, $iv);
            $dec_s = strlen($decrypted);
            $padding = ord($decrypted[$dec_s-1]);
            $decrypted = substr($decrypted, 0, -$padding);
            return $decrypted;
        }
        /**
         * [opensslDecrypt description]
         * 使用openssl库进行加密
         * @param  [type] $sStr
         * @param  [type] $sKey
         * @return [type]
         */
        public function opensslEncrypt($sStr, $sKey, $method = 'AES-256-ECB'){
            $str = openssl_encrypt($sStr,$method,$sKey);
            return $str;
        }
        /**
         * [opensslDecrypt description]
         * 使用openssl库进行解密
         * @param  [type] $sStr
         * @param  [type] $sKey
         * @return [type]
         */
        public function opensslDecrypt($sStr, $sKey, $method = 'AES-256-ECB'){
            $str = openssl_decrypt($sStr,$method,$sKey);
            return $str;
        }
    }
    ?>

[http_tool.chacuo.net_cryptaes]: http://tool.chacuo.net/cryptaes/
[https_blog.bitefu.net_post_143.html]: https://blog.bitefu.net/post/143.html