Nodejs Crypto Javascript中的javax.crypto.Cipher等效代码 [英] javax.crypto.Cipher equivalent code in Nodejs Crypto Javascript

问题描述

我正在尝试将以下java代码转换为nodejs。

I'm trying to convert below java code into nodejs.

public static String encrypt(String accessToken) throws Exception {
        Cipher cipher = Cipher.getInstance("AES");
        String merchantKey = "11111111111111111111";
        String st = StringUtils.substring(merchantKey, 0, 16);
        System.out.println(st);
        Key secretKey = new SecretKeySpec(st.getBytes(), "AES");
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        byte[] encryptedByte = cipher.doFinal(accessToken.getBytes());

        // convert the byte to hex format
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < encryptedByte.length; i++) {
            sb.append(Integer.toString((encryptedByte[i] & 0xff) + 0x100, 16).substring(1));
        }
        return sb.toString();
    }

这是我能够弄清楚的 -

Here is what I was able to figure out-

function freeChargeEncryptAES(token){
    var fcKey = "11111111111111111111".substring(0, 16);
    var cipher = crypto.createCipher('aes-128-ecb', fcKey, "");
    var encrypted = cipher.update(token,'ascii','hex');
    encrypted += cipher.final('hex');
    return encrypted;
}

我无法获得相同的输出。例如，如果

I'm not able to get same output. For example if

token =abcdefgh

token = "abcdefgh"

Java代码输出 - bc02de7c1270a352a98faa686f155df3

Java Code output - bc02de7c1270a352a98faa686f155df3

Nodejs代码输出 - eae7ec6943953aca94594641523c3c6d

Nodejs Code output - eae7ec6943953aca94594641523c3c6d

我读过这个答案默认加密算法是 aes-ecb ，它不需要IV。由于密钥长度为16，我假设 aes-128-ecb （16 * 8 = 128）是我应该使用的算法。

I've read from this answer that by default encryption algorithm is aes-ecb which does not need IV. As the key length is 16, I'm assuming aes-128-ecb (16*8 = 128) is the algorithm that I should use.

有人能帮我解决问题吗？

Can someone help me figure out the problem ??

推荐答案

只需改变 -

crypto.createCipher（'aes-128-ecb'，fcKey，）;

到

crypto.createCipheriv（'aes-128-ecb'，fcKey，）;

原因很简单 - createCipher 方法将第二个参数视为加密密码，但它是加密密钥。

Reason is simple - createCipher method treats second parameter as Encryption Password while it is an Encryption Key.

我的不好，即使在阅读这个答案，我使用了错误的方法（crypto.createCipher而不是crypto.createCipheriv）。下面是nodejs中正确的工作代码。这就是全部所需。

My bad, even after reading this answer, I've used wrong method (crypto.createCipher instead of crypto.createCipheriv). Below is proper working code in nodejs. That was all needed.

function freeChargeEncryptAES(token){
    var fcKey = "11111111111111111111".substring(0, 16);
    var cipher = crypto.createCipheriv('aes-128-ecb', fcKey, "");
    var encrypted = cipher.update(token,'ascii','hex');
    encrypted += cipher.final('hex');
    return encrypted;
}

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