这篇文章主要介绍了Node.js中AES加密和其它语言不一致问题解决办法,例如和C#、JAVA语言相互通信时,需要的朋友可以参考下

例子一：   这几天被一个问题困扰着。Nodejs的AES加密和Java，C#加密出来的不一致。当然，这样就不能解密了。纠结了许久：后来还是实在不行了，看了下源代码，要不然还得继续纠结下去。网上说，通常的nodejs AES和其他语言实现不一样。好吧~~或许吧。 nodejs的crypto模块。    代码如下: 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'; /*加密*/     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('')); /*解密*/     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(''));   的确，没错~~加密解密成功。但是和java，C#中加密出来的不一样啊。神啊。我想，大家都在这里纠结着吧~~对不对。其实只要加个向量，就可以和一致了。网上搜索出来的资源太少。才让自己纠结那么久。好吧，正确代码是：  代码如下: 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(''));   对比发现，加密出来是一致的。好吧，结贴~~~我恨你，浪费了我一天时间。     例子二：   工作中遇到nodejs端通过aes加密，安卓客户端java解密，同意nodejs也需要解密安卓客户端加密过来的内容，发现两个加密结果不一样，查询资料发现java端需要对密钥za再MD5加密一遍，以下是aes ecb加密的内容，如果是cbc也同样需要对秘钥MD5加密：     nodejs:    代码如下: /**   * aes加密   * @param data   * @param secretKey   */   encryptUtils.aesEncrypt = function(data, secretKey) {       var cipher = crypto.createCipher('aes-128-ecb',secretKey);       return cipher.update(data,'utf8','hex') + cipher.final('hex');   }     /**   * aes解密   * @param data   * @param secretKey   * @returns {*}   */   encryptUtils.aesDecrypt = function(data, secretKey) {       var cipher = crypto.createDecipher('aes-128-ecb',secretKey);       return cipher.update(data,'hex','utf8') + cipher.final('utf8');   }     java: 代码如下: package com.iofamily.util;     import java.security.MessageDigest;     import javax.crypto.Cipher;   import javax.crypto.spec.SecretKeySpec;     /**   * AES加密，与Nodejs 保持一致   * @author lmiky   * @date 2014-2-25   */   public class AESForNodejs {       public static final String DEFAULT_CODING = "utf-8";         /**       * 解密       * @author lmiky       * @date 2014-2-25       * @param encrypted       * @param seed       * @return       * @throws Exception       */       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);       }         /**       * 加密       * @author lmiky       * @date 2014-2-25       * @param content       * @param key       * @return       * @throws Exception       */       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);       }         /**       * 字符串转字节数组       * @author lmiky       * @date 2014-2-25       * @param hexString       * @return       */       private static byte[] toByte(String hexString) {           int len = hexString.length() / 2;           byte[] result = new byte[len];           for (int i = 0; i < len; i++) {