問題描述

在 node.js 中，我使用內置函數來加密數據:

In node.js, I use the build in function to encrypt data like that:

var text = "Yes";
var password = "123456";
var encrypt = crypto.createCipher('aes-256-cbc', password);
var encryptOutput1 = encrypt.update(text, 'base64', 'base64');
var encryptOutput2 = encrypt.final('base64');
var encryptedText = encryptOutput1 + encryptOutput2;

輸出(加密文本)為:OnNINwXf6U8XmlgKJj48iA==

the output (encrypted text) is: OnNINwXf6U8XmlgKJj48iA==

然后我在 PHP 中使用解密:

Then I use decrypt it in PHP:

$encrypted = 'OnNINwXf6U8XmlgKJj48iA==';
(or $encrypted = base64_decode('OnNINwXf6U8XmlgKJj48iA==')  );
$dtext2 = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $encrypted, MCRYPT_MODE_CBC);
echo "Decrypted: $dtext2";

我會得到一些我無法解密的有趣字符.我嘗試使用/不使用 base64_decode 或 MCRYPT_RIJNDAEL_128 .. 都失敗了.

I will get some funny characters, which I can't decrypted it. I tried with/without base64_decode or MCRYPT_RIJNDAEL_128.. all fail.

然后我檢查了PHP中的加密方式，它看起來與node.js的輸出非常不同.

Then I check how the encryption in PHP, it looks very different from the output from node.js.

$text = "Yes";
    $key = "123456"; 


    $eText = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $text, MCRYPT_MODE_CBC);
    echo "Encrypted: $eText 
";
    echo "base64: " . base64_encode($eText) . " 
";

    $dtext1 = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $eText, MCRYPT_MODE_CBC);
    echo "Decrypted: $dtext1 

";

它可以加密和解密.加密數據為:njCE/fk3pLD1/JfiQuyVa6w5H+Qb/utBIT3m7LAcetM=

It can encrypt and decrypt. and the encrypted data is : njCE/fk3pLD1/JfiQuyVa6w5H+Qb/utBIT3m7LAcetM=

這與 node.js 的輸出非常不同，請告知我如何在 node.js & 之間進行加密和解密.php.ini謝謝.:)

which is very different from the output from node.js please advise how I can encrypt and decrypt between node.js & php. thanks. :)

@Mel 這是我在 PHP 中所擁有的:

@Mel here is what I have in PHP:

$text = "Yes";

$key = "32BytesLongKey560123456789ABCDEF"; 
$iv =  "sixteenbyteslong";

/* Open the cipher */
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');

/* Intialize encryption */
mcrypt_generic_init($td, $key, $iv);

/* Encrypt data */
$eText = mcrypt_generic($td, $text);

echo "Encrypted Data: $eText 
";
echo "base64: " . base64_encode($eText) . " 
";

/* Terminate encryption handler */
mcrypt_generic_deinit($td);

/* Initialize encryption module for decryption */
mcrypt_generic_init($td, $key, $iv);

/* Decrypt encrypted string */
$dText = mdecrypt_generic($td, $eText);

/* Terminate decryption handle and close module */
mcrypt_generic_deinit($td);
mcrypt_module_close($td);

/* Show string */
echo trim($dText) . "
";

然而，它仍然不起作用.

However, it still doesn't work.

PHP 中加密的 base 64 為:80022AGM4/4qQtiGU5oJDQ==nodejs中加密的base 64為:EoYRm5SCK7EPe847CwkffQ==

The encrypted base 64 in PHP is: 80022AGM4/4qQtiGU5oJDQ== The encrypted base 64 in nodejs is: EoYRm5SCK7EPe847CwkffQ==

因此，我無法在 PHP 中解密 nodejs 之一.

thus, i can't decrypt the nodejs one in PHP.

不知道是不是因為nodejs不需要$iv?

I wonder if it is because nodejs doesn't require $iv?

推薦答案

晚了七個月，但我也在為此苦苦掙扎，并找到了解決方案.顯然，PHP 用零字節填充輸入以使其大小成為塊大小的倍數.例如，使用 AES-128，14 字節輸入contrabassists"將填充兩個零字節，如下所示:

Seven months late, but I was struggling with this as well, and found a solution. Apparently, PHP pads the input with zero bytes to make its size a multiple of the block size. For example, using AES-128, the 14 byte input "contrabassists" will be padded with two zero bytes, like this:

"contrabassists

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