在node.js中重新创建MCRYPT_RIJNDAEL_128

时间:2014-12-31 00:42:03

标签: javascript php node.js aes mcrypt

尝试在node.js中重新创建以下php加密代码:

$size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
$iv = mcrypt_create_iv($size, MCRYPT_RAND);
$msg = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_128, 'MY_KEY_LONG_STRING', 'PLAINTEXT', MCRYPT_MODE_ECB, $iv));

试过这个:

var text = 'PLAINTEXT';
var len = text.length;
for (var i = 0; i < 16 - len % 16; i++) {  // pad to multiple of block size 
    text += '\0';
}
var key = 'MY_KEY_LONG_STRING';
key = key.substr(0, 16); // trim to expected key size for aes128

var cipher = crypto.createCipher('aes-128-ecb', key);
cipher.setAutoPadding(false); // did our own padding, to match mcrypt_encrypt
var encrypted = cipher.update(text, 'utf8', 'base64');
encrypted += cipher.final('base64');

从php获得不同的结果...

还尝试使用IV创建密码(甚至不应该在aes-128-ecb中使用):

var cipher = crypto.createCipheriv('aes-128-ecb', key, '');

另外,php的结果不同。任何想法如何使这个行为完全像PHP版本?

3 个答案:

答案 0 :(得分:3)

互相玩两个相当不健康的图书馆可能很有趣。我会按照要求帮助您完成所有工作,而不是完成所有工作:

  • 而不是删除关键字节,PHP使用零填充扩展它们到下一个可用的密钥大小 - 在你的情况下将是192位或24字节;要做到这一点,你需要指定aes-192-ecb作为算法(你需要继续使用MCRYPT_RIJNDAEL_128但替代,PHP中的128是块大小而不是密钥大小)
  • 填充不正确,PHP填充0..15零字节而不是1..16字节
  • 你不能使用2参数createCipher,因为第二个参数是密码;如果你使用那个,node.js会执行密钥派生,所以你需要使用三个参数createCipher代替并提供任何16字节的IV

PHP中的IV代码只是不必要地对随机数生成器征税,不使用IV。


执行填充的代码

var padSize = 16 - ((len + 16 - 1) % 16 + 1);
for (var i = 0; i < padSize; i++) {  // pad 0 .. 15 until to multiple of block size 
    text += '\0';
}

或者您可以使用自己的填充方法,除非 len % 16 == 0

答案 1 :(得分:1)

这是我的代码,用于解决从PHP迁移到NodeJS的问题。我有严格的32字节密钥,所以我必须使用$text = "Some super mega text I want to encode"; $skey = "rcbTw667C7zxghZ5U3gwhQlp22t8c5Rq"; function encode($text,$skey) { $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB); $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); $crypttext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $skey, $text, MCRYPT_MODE_ECB, $iv); return base64_encode($crypttext); } echo encode($text,$skey);

PHP代码我想重写:

dU1eOy+YwkYvm/KCTB8aqR1UsisyrHrvBu+E/H3G/s0aagMDKlNFekGXNQyFMFJD

输出:

var crypto = require('crypto');

var text = "Some super mega text I want encode";
var skey = "rcbTw667C7zxghZ5U3gwhQlp22t8c5Rq";

function encode(text, skey) {
    var len = text.length;
    var padSize = 16 - ((len + 16 - 1) % 16 + 1);
    for (var i = 0; i < padSize; i++) { 
        text += '\0';
    }
    var cipher = crypto.createCipheriv('aes-256-ecb', skey, '');
    cipher.setAutoPadding(false);
    var encrypted = cipher.update(text, 'utf8', 'base64');
    encrypted += cipher.final('base64');
    return encrypted;
}

console.log(encode(text, skey));

<强>的NodeJS:

dU1eOy+YwkYvm/KCTB8aqR1UsisyrHrvBu+E/H3G/s0aagMDKlNFekGXNQyFMFJD

输出:

npm install mcrypt

NodeJS mcrypt包也适用:

var text = "Some super mega text I want encode";
var skey = "rcbTw667C7zxghZ5U3gwhQlp22t8c5Rq";

function encode(text, skey) {
    var MCrypt = require('mcrypt').MCrypt;
    var rijEcb = new MCrypt('rijndael-128', 'ecb');
    rijEcb.open(skey);
    var ciphertext = rijEcb.encrypt(text);
    return ciphertext.toString('base64');
}

console.log(encode(text, skey));

代码:

dU1eOy+YwkYvm/KCTB8aqR1UsisyrHrvBu+E/H3G/s0aagMDKlNFekGXNQyFMFJD

输出:

main

答案 2 :(得分:0)

我尝试了其他选择,但无济于事,

function encrypt(text) {
  text = '' + text;
  var crypto = require('crypto');
  var len = text.length;
  var padSize = 16 - (((len + 16 - 1) % 16) + 1);
  var data = String.fromCharCode(padSize);
  var text = text + data.repeat(padSize);

  var cipher = crypto.createCipheriv('aes-128-ecb','secretKey', '');
  cipher.setAutoPadding(false);
  var encrypted = cipher.update(text, 'utf8', 'base64');
  encrypted += cipher.final('base64');
  return encrypted;
}

PHP中的类似语言

function aes128Encrypt($str,$key){
$block = mcrypt_get_block_size('rijndael_128', 'ecb');
$pad = $block - (strlen($str) % $block);
$str .= str_repeat(chr($pad), $pad);
return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $str, MCRYPT_MODE_ECB));
}