Node.js solution for AES encryption and other language inconsistencies

Example 1:

There is a problem troubling me these days. Nodejs AES encryption and Java, C# encryption out of the inconsistent. And, of course, you can't decrypt it. Tangled for a long time: later or really not, looked at the source code, or still have to continue to tangle. The web says that the usual nodejs AES is implemented differently from other languages. Well, maybe.
Nodejs crypto module.

var crypto = require('crypto');
    var data = "156156165152165156156";
    console.log('Original cleartext: ' + data);
    var algorithm = 'aes-128-ecb';
    var key = '78541561566';
    var clearEncoding = 'utf8';
    //var cipherEncoding = 'hex';
    //If the next line is uncommented, the final cleartext is wrong.
    var cipherEncoding = 'base64';

    var cipher = crypto.createCipher(algorithm, key);
    var cipherChunks = [];
    cipherChunks.push(cipher.update(data, clearEncoding, cipherEncoding));
    cipherChunks.push(cipher.final(cipherEncoding));
    console.log(cipherEncoding + ' ciphertext: ' + cipherChunks.join(''));

    var decipher = crypto.createDecipher(algorithm, key);
    var plainChunks = [];
    for (var i = 0;i < cipherChunks.length;i++) {
      plainChunks.push(decipher.update(cipherChunks[i], cipherEncoding, clearEncoding));
    }
    plainChunks.push(decipher.final(clearEncoding));
    console.log("UTF8 plaintext deciphered: " + plainChunks.join(''));

Indeed, yes ~~ encrypted and decrypted successfully. But it's not the same as in Java or C#. My god. I think, everyone here is struggling with it ~~ right. You just have to add a vector, and it's going to be the same. Too few resources are found online. It took me so long. All right, The correct code is:

var crypto = require('crypto');
    var data = "156156165152165156156";
    console.log('Original cleartext: ' + data);
    var algorithm = 'aes-128-ecb';
    var key = '78541561566';
    var clearEncoding = 'utf8';
    var iv = "";
    //var cipherEncoding = 'hex';
    //If the next line is uncommented, the final cleartext is wrong.
    var cipherEncoding = 'base64';
    var cipher = crypto.createCipheriv(algorithm, key,iv);
    var cipherChunks = [];
    cipherChunks.push(cipher.update(data, clearEncoding, cipherEncoding));
    cipherChunks.push(cipher.final(cipherEncoding));
    console.log(cipherEncoding + ' ciphertext: ' + cipherChunks.join(''));
    var decipher = crypto.createDecipheriv(algorithm, key,iv);
    var plainChunks = [];
    for (var i = 0;i < cipherChunks.length;i++) {
      plainChunks.push(decipher.update(cipherChunks[i], cipherEncoding, clearEncoding));
    }
    plainChunks.push(decipher.final(clearEncoding));
    console.log("UTF8 plaintext deciphered: " + plainChunks.join(''));

The comparison shows that the encryption is consistent. All right, I hate you for wasting my day.

Example 2:

Encountered in the work by aes encryption nodejs end, decrypt the android Java client, agree nodejs also need to decrypt the content of the android client encryption to come over, found that two different encryption result, query information found Java side need to MD5 encryption key za again, below is the content of aes encryption of the ECB, if is CBC also need to the secret key MD5 encryption:

Nodejs:

  
encryptUtils.aesEncrypt = function(data, secretKey) {  
    var cipher = crypto.createCipher('aes-128-ecb',secretKey);  
    return cipher.update(data,'utf8','hex') + cipher.final('hex');  
}  

  
encryptUtils.aesDecrypt = function(data, secretKey) {  
    var cipher = crypto.createDecipher('aes-128-ecb',secretKey);  
    return cipher.update(data,'hex','utf8') + cipher.final('utf8');  
}  

Java:

package com.iofamily.util;  

import java.security.MessageDigest;  

import javax.crypto.Cipher;  
import javax.crypto.spec.SecretKeySpec;  

  
public class AESForNodejs {  
    public static final String DEFAULT_CODING = "utf-8";  

      
    private static String decrypt(String encrypted, String seed) throws Exception {  
        byte[] keyb = seed.getBytes(DEFAULT_CODING);  
        MessageDigest md = MessageDigest.getInstance("MD5");  
        byte[] thedigest = md.digest(keyb);  
        SecretKeySpec skey = new SecretKeySpec(thedigest, "AES");  
        Cipher dcipher = Cipher.getInstance("AES");  
        dcipher.init(Cipher.DECRYPT_MODE, skey);  

        byte[] clearbyte = dcipher.doFinal(toByte(encrypted));  
        return new String(clearbyte);  
    }  

      
    public static String encrypt(String content, String key) throws Exception {  
        byte[] input = content.getBytes(DEFAULT_CODING);  

        MessageDigest md = MessageDigest.getInstance("MD5");  
        byte[] thedigest = md.digest(key.getBytes(DEFAULT_CODING));  
        SecretKeySpec skc = new SecretKeySpec(thedigest, "AES");  
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");  
        cipher.init(Cipher.ENCRYPT_MODE, skc);  

        byte[] cipherText = new byte[cipher.getOutputSize(input.length)];  
        int ctLength = cipher.update(input, 0, input.length, cipherText, 0);  
        ctLength += cipher.doFinal(cipherText, ctLength);  

        return parseByte2HexStr(cipherText);  
    }  

      
    private static byte[] toByte(String hexString) {  
        int len = hexString.length() / 2;  
        byte[] result = new byte[len];  
        for (int i = 0; i < len; i++) {  
            result[i] = Integer.valueOf(hexString.substring(2 * i, 2 * i + 2), 16).byteValue();  
        }  
        return result;  
    }  

      
    private static String parseByte2HexStr(byte buf[]) {  
        StringBuffer sb = new StringBuffer();  
        for (int i = 0; i < buf.length; i++) {  
            String hex = Integer.toHexString(buf[i] & 0xFF);  
            if (hex.length() == 1) {  
                hex = '0' + hex;  
            }  
            sb.append(hex);  
        }  
        return sb.toString();  
    }  

    public static void main(String[] args) throws Exception {  
        System.out.println(AESForNodejs.encrypt("fsadfsdafsdafsdafsadfsadfsadf", "1234fghjnmlkiuhA"));  
        System.out.println(AESForNodejs.decrypt("5b8e85b7a86ad15a275a7cb61fe4c0606005e8741f68797718a3e90d74b5092a", "1234fghjnmlkiuhA"));  
    }  
}