Java与Node.js利用AES加密解密出相同结果的方法示例

前言

工作中遇到nodejs端通过aes加密，安卓客户端java解密，同样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端需要对密钥再md5加密一遍，以下是java与node.js利用aes加密解密出相同结果的方法，需要的朋友们下面来一起学习学习吧。

java代码如下：

package g.g;

import java.security.messagedigest;

import javax.crypto.cipher;
import javax.crypto.spec.secretkeyspec;

public class aesecb {
 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++) { 
   result[i] = integer.valueof(hexstring.substring(2 * i, 2 * i + 2), 16).bytevalue(); 
  } 
  return result; 
 } 
  
 /** 
  * 字节转16进制数组 
  * @author lmiky 
  * @date 2014-2-25 
  * @param buf 
  * @return 
  */ 
 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(aesecb.encrypt("fsadfsdafsdafsdafsadfsadfsadf", "1evriqy7b9uv7zmm")); 
  system.out.println(aesecb.decrypt("b123e2d9199598c0e3f1999dc9e723387b68e29d2b3a0d59fc7d5946c750c6b4", "1evriqy7b9uv7zmm")); 
 }
}

node.js代码如下：

var crypto = require('crypto');
exports.aes_algorithm = "aes-128-ecb";
exports.aes_secrect = "1evriqy7b9uv7zmm";

exports.encrypt = function (text) {
 var cipher = crypto.createcipher(this.aes_algorithm, this.aes_secrect)
 var crypted = cipher.update(text, 'utf8', 'hex')
 crypted += cipher.final('hex');
 return crypted;
};

exports.decrypt = function (text) {
 var decipher = crypto.createdecipher(this.aes_algorithm, this.aes_secrect)
 var dec = decipher.update(text, 'hex', 'utf8')
 dec += decipher.final('utf8');
 return dec;
};

//var hw = this.encrypt("fsadfsdafsdafsdafsadfsadfsadf");
//console.log(hw);
//console.log(this.decrypt(hw));

总结

以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作能带来一定的帮助，如果有疑问大家可以留言交流，谢谢大家对的支持。