在节点中加密，在 Java 中解密

以为我从节点和java端发布了一个完整的CBC示例（256而不是128）：如果您获得java.security.InvalidKeyException，则必须安装Java加密扩展（JCE）无限强度管辖权策略文件：

Java 6 link Java 7 link Java 8 link

Java 加密和解密。

    import java.security.MessageDigest;
    import javax.crypto.spec.SecretKeySpec;
    import javax.crypto.spec.IvParameterSpec;
    import javax.crypto.Cipher;
    import java.util.Base64;
    import javax.xml.bind.DatatypeConverter;

    public class AESExample {
        private static byte[] iv = "0000000000000000".getBytes();
        private static String decrypt(String encrypted, String seed)
                throws Exception {
            byte[] keyb = seed.getBytes("utf-8");
            MessageDigest md = MessageDigest.getInstance("SHA-256");
            byte[] thedigest = md.digest(keyb);
            SecretKeySpec skey = new SecretKeySpec(thedigest, "AES");
            Cipher dcipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            dcipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(seed.getBytes("UTF-8"), "AES"), new IvParameterSpec(iv));
            byte[] clearbyte = dcipher.doFinal(DatatypeConverter
                    .parseHexBinary(encrypted));
            return new String(clearbyte);
        }
        public static String encrypt(String content, String key) throws Exception {
            byte[] input = content.getBytes("utf-8");
            MessageDigest md = MessageDigest.getInstance("SHA-256");
            byte[] thedigest = md.digest(key.getBytes("utf-8"));
            SecretKeySpec skc = new SecretKeySpec(thedigest, "AES");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(key.getBytes("UTF-8"), "AES"), new IvParameterSpec(iv));
            byte[] cipherText = new byte[cipher.getOutputSize(input.length)];
            int ctLength = cipher.update(input, 0, input.length, cipherText, 0);
            ctLength += cipher.doFinal(cipherText, ctLength);
            return DatatypeConverter.printHexBinary(cipherText);
        }

public static String encrypt128(String content, String key) throws Exception {
        byte[] input = content.getBytes("utf-8");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(DatatypeConverter.parseHexBinary(key), "AES"), new IvParameterSpec(iv));
         byte[] encrypted = cipher.doFinal(content.getBytes("UTF-8"));
        return DatatypeConverter.printHexBinary(encrypted);
    }

        public static void main(String[] args) throws Exception {
            String data = "Here is my string";
            String key = "1234567891123456";
            String cipher = AESExample.encrypt(data, key);
            String decipher = AESExample.decrypt(cipher, key);
            System.out.println(cipher);
            System.out.println(decipher);
            System.out.println(AESExample.encrypt(data, "1234567891123456"));
            System.out.println(AESExample.encrypt128(data, "d7900701209d3fbac4e214dfeb5f230f"));
        }
    }

以下两个方向的节点：

    var crypto = require('crypto');
        var iv = new Buffer('0000000000000000');
        // reference to converting between buffers http://nodejs.org/api/buffer.html#buffer_new_buffer_str_encoding
        // reference node crypto api http://nodejs.org/api/crypto.html#crypto_crypto_createcipheriv_algorithm_key_iv
        // reference to ECB vs CBC cipher methods http://crypto.stackexchange.com/questions/225/should-i-use-ecb-or-cbc-encryption-mode-for-my-block-cipher

        var encrypt = function(data, key) {
          var decodeKey = crypto.createHash('sha256').update(key, 'utf-8').digest();
          var cipher = crypto.createCipheriv('aes-256-cbc', decodeKey, iv);
          return cipher.update(data, 'utf8', 'hex') + cipher.final('hex');
        };

        var decrypt = function(data, key) {
          var encodeKey = crypto.createHash('sha256').update(key, 'utf-8').digest();
          var cipher = crypto.createDecipheriv('aes-256-cbc', encodeKey, iv);
          return cipher.update(data, 'hex', 'utf8') + cipher.final('utf8');
        };

       var decrypt128 = function(data, key) {

          var encodeKey = crypto.createHash('sha256').update(key, 'utf-8').digest();
         var cipher = crypto.createDecipheriv('aes-128-cbc', new Buffer(key, 'hex'),
    new Buffer(
      iv));
  return cipher.update(data, 'hex', 'utf8') + cipher.final('utf8');
};
        var data = 'Here is my string'
        var key = '1234567891123456';
        var cipher = encrypt(data, key);
        var decipher = decrypt(cipher, key);
        console.log(cipher);
        console.log(decipher);
        // the string below was generated from the "main" in the java side
        console.log(decrypt(
          "79D78BEFC06827B118A2ABC6BD9D544E83F92930144432F22A6909EF18E0FDD1", key));
        console.log(decrypt128(
  "3EB7CF373E108ACA93E85D170C000938A6B3DCCED53A4BFC0F5A18B7DDC02499",
  "d7900701209d3fbac4e214dfeb5f230f"));

最后，我找到了解决问题的方法。感谢这个家伙。解决方案的关键是初始化向量。引用要点：

ECB模式不需要IV，所以保持这样，它会很好地工作。

解决方案如下所示：

var crypto = require('crypto'),
    iv = new Buffer(''),
    key = new Buffer('6d7956657279546f705365637265744b', 'hex'),
    cipher = cypto.createCipheriv('aes-128-ecb', key, iv),
    chunks = [];

chunks.push(cipher.update(
    new Buffer(JSON.stringify({someKey: "someValue"}), 'utf8'),
    'buffer', 'base64'));
chunks.push(cipher.final('base64'));
var encryptedString = chunks.join('');