php里面,md5能否加密字节数组?
php里面,md5能否加密字节数组?
回复内容:
php里面,md5能否加密字节数组?
把数组转换为字符串后应该可以加密
不知道你所说的 字节数组
是什么一个概念, php
中的 string
既可以存储 字符串
也能够存储 二进制数据
,如果你的数据是以二进制存放在 string
里的,那可以直接通过 md5
函数进行加密,md5
在加密过程中视参数为二进制数据。
数组serialize或json_encode成字符串,然后用PHP内置的MCRYPT_BLOWFISH算法进行加密.
<code><?php header('Content-Type: text/plain;charset=utf-8'); // 加密数据 mcrypt_generic // 解密数据 mdecrypt_generic // http://php.net/manual/zh/function.mdecrypt-generic.php // 加密描述符 $td // 密钥 $key // 初始向量 $iv /* 数据 */ $key = 'this is a very long key, even too long for the cipher'; $plain_text = 'echo time()."\n";'; /* 打开加密模块,并且创建初始向量 */ //打开算法和模式对应的模块,成功则返回加密描述符(资源类型),发生错误则返回FALSE. //算法类型MCRYPT_BLOWFISH,模式MCRYPT_MODE_ECB $td = mcrypt_module_open(MCRYPT_BLOWFISH, '', MCRYPT_MODE_ECB, ''); //$td = mcrypt_module_open('des', '', 'ecb', ''); $key = substr($key, 0, mcrypt_enc_get_key_size($td)); $iv_size = mcrypt_enc_get_iv_size($td); $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); /* 初始化加密句柄 */ if (mcrypt_generic_init($td, $key, $iv) != -1) { /* 加密数据 */ $c_t = mcrypt_generic($td, $plain_text); mcrypt_generic_deinit($td); // 密文是二进制数据 echo '密文: '.bin2hex($c_t)."\n"; /* 为解密重新初始化缓冲区 */ mcrypt_generic_init($td, $key, $iv); $p_t = mdecrypt_generic($td, $c_t); // 解密数据,请注意,由于存在数据补齐的情况,返回的字符串的长度可能和明文的长度不相等. echo '明文: '.$p_t."\n"; eval( substr($p_t, 0, strlen($plain_text)) ); //eval('echo time()."\n";'); /* 执行清理工作 */ mcrypt_generic_deinit($td); mcrypt_module_close($td); } if (strncmp($p_t, $plain_text, strlen($plain_text)) == 0) { echo "OK\n"; } else { echo "Error\n"; }</code></code>

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