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Home Backend Development PHP Tutorial php里面,md5能否加密字节数组?

php里面,md5能否加密字节数组?

Jun 06, 2016 pm 08:20 PM
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php里面,md5能否加密字节数组?

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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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