Java与Node.js利用AES加密解密出相同结果的方法示例

packageg.g;

importjava.security.MessageDigest;

importjavax.crypto.Cipher;

importjavax.crypto.spec.SecretKeySpec;

publicclassAesECB {

 publicstaticfinalString DEFAULT_CODING ="utf-8";

 /**

  * 解密

  * @author lmiky

  * @date 2014-2-25

  * @param encrypted

  * @param seed

  * @return

  * @throws Exception

  */

 privatestaticString decrypt(String encrypted, String seed)throwsException {

  byte[] keyb = seed.getBytes(DEFAULT_CODING);

  MessageDigest md = MessageDigest.getInstance("MD5");

  byte[] thedigest = md.digest(keyb);

  SecretKeySpec skey =newSecretKeySpec(thedigest,"AES");

  Cipher dcipher = Cipher.getInstance("AES");

  dcipher.init(Cipher.DECRYPT_MODE, skey);

  byte[] clearbyte = dcipher.doFinal(toByte(encrypted));

  returnnewString(clearbyte);

 }

 /**

  * 加密

  * @author lmiky

  * @date 2014-2-25

  * @param content

  * @param key

  * @return

  * @throws Exception

  */

 publicstaticString encrypt(String content, String key)throwsException {

  byte[] input = content.getBytes(DEFAULT_CODING);

  MessageDigest md = MessageDigest.getInstance("MD5");

  byte[] thedigest = md.digest(key.getBytes(DEFAULT_CODING));

  SecretKeySpec skc =newSecretKeySpec(thedigest,"AES");

  Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");

  cipher.init(Cipher.ENCRYPT_MODE, skc);

  byte[] cipherText =newbyte[cipher.getOutputSize(input.length)];

  intctLength = cipher.update(input,0, input.length, cipherText,0);

  ctLength += cipher.doFinal(cipherText, ctLength);

  returnparseByte2HexStr(cipherText);

 }

 /**

  * 字符串转字节数组

  * @author lmiky

  * @date 2014-2-25

  * @param hexString

  * @return

  */

 privatestaticbyte[] toByte(String hexString) {

  intlen = hexString.length() /2;

  byte[] result =newbyte[len];

  for(inti =0; i < len; i++) {

   result[i] = Integer.valueOf(hexString.substring(2* i,2* i +2),16).byteValue();

  }

  returnresult;

 }

 /**

  * 字节转16进制数组

  * @author lmiky

  * @date 2014-2-25

  * @param buf

  * @return

  */

 privatestaticString parseByte2HexStr(bytebuf[]) {

  StringBuffer sb =newStringBuffer();

  for(inti =0; i < buf.length; i++) {

   String hex = Integer.toHexString(buf[i] &0xFF);

   if(hex.length() ==1) {

    hex =Ɔ'+ hex;

   }

   sb.append(hex);

  }

  returnsb.toString();

 }

 publicstaticvoidmain(String[] args)throwsException {

  System.out.println(AesECB.encrypt("fsadfsdafsdafsdafsadfsadfsadf","1eVRiqy7b9Uv7ZMM"));

  System.out.println(AesECB.decrypt("b123e2d9199598c0e3f1999dc9e723387b68e29d2b3a0d59fc7d5946c750c6b4","1eVRiqy7b9Uv7ZMM"));

 }

}

varcrypto = require('crypto');

exports.aes_algorithm ="aes-128-ecb";

exports.aes_secrect ="1eVRiqy7b9Uv7ZMM";

exports.encrypt =function(text) {

 varcipher = crypto.createCipher(this.aes_algorithm,this.aes_secrect)

 varcrypted = cipher.update(text,'utf8','hex')

 crypted += cipher.final('hex');

 returncrypted;

};

exports.decrypt =function(text) {

 vardecipher = crypto.createDecipher(this.aes_algorithm,this.aes_secrect)

 vardec = decipher.update(text,'hex','utf8')

 dec += decipher.final('utf8');

 returndec;

};

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

//console.log(hw);

//console.log(this.decrypt(hw));