能否将这个des加密C#版本改成Java版本

Question

    private const string KEY = "VZCDFKBG";

    /// <summary>
    /// DES加密
    /// </summary>
    /// <param name="pToEncrypt"></param>
    /// <returns></returns>
    public static string DESEncrypt(string pToEncrypt)
    {
        try
        {
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            byte[] inputByteArray = Encoding.Default.GetBytes(pToEncrypt);
            des.Key = ASCIIEncoding.ASCII.GetBytes(KEY);
            des.IV = ASCIIEncoding.ASCII.GetBytes(KEY);
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            StringBuilder ret = new StringBuilder();
            foreach (byte b in ms.ToArray())
                ret.AppendFormat("{0:X2}", b);
            ret.ToString();
            return ret.ToString();
        }
        catch (Exception)
        {
            return "";
        }
    }

Answer 1

DES工具类：

public class AesUtils {

    public static final String SECRETKEY = "secretKey";



    public static String encryptStr(String srcStr, String password) {
        byte[] encryptResult = encryptData_AES(srcStr, password);
        String encryptResultStr = parseByte2HexStr(encryptResult);
        return encryptResultStr;
    }


    public static String decryptStr(String srcStr, String password) {
        String returnValue = "";
        try {
            byte[] decryptFrom = parseHexStr2Byte(srcStr);
            byte[] decryptResult = decryptData_AES(decryptFrom, password);
            returnValue = new String(decryptResult, "utf-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return returnValue;
    }


    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.toUpperCase());
        }
        return sb.toString();
    }


    private static byte[] encryptData_AES(String content, String password) {
        try {
            SecretKey secretKey = getKey(password);
            byte[] enCodeFormat = secretKey.getEncoded();
            SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
            Cipher cipher = Cipher.getInstance("AES");
            byte[] byteContent = content.getBytes("utf-8");
            cipher.init(Cipher.ENCRYPT_MODE, key);
            byte[] result = cipher.doFinal(byteContent);
            return result;
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        } catch (GeneralSecurityException e) {
            e.printStackTrace();
        }
        return null;
    }


    private static byte[] parseHexStr2Byte(String hexStr) {
        if (hexStr.length() < 1)
            return null;
        byte[] result = new byte[hexStr.length() / 2];
        for (int i = 0; i < hexStr.length() / 2; i++) {
            int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
            int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2),
                    16);
            result[i] = (byte) (high * 16 + low);
        }
        return result;
    }


    private static SecretKey getKey(String secret) throws GeneralSecurityException {
        try {           
              KeyGenerator _generator = KeyGenerator.getInstance("AES");  
              SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");  
              secureRandom.setSeed(secret.getBytes());  
              _generator.init(128,secureRandom);  
              return _generator.generateKey();  
          }  catch (Exception e) {  
               throw new RuntimeException("");
          }  
    }

    private static byte[] decryptData_AES(byte[] content, String password) {
        try {
            SecretKey secretKey = getKey(password);
            byte[] enCodeFormat = secretKey.getEncoded();
            SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.DECRYPT_MODE, key);
            byte[] result = cipher.doFinal(content);
            return result; 
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        } catch (GeneralSecurityException e) {
            e.printStackTrace();
        }
        return null;
    }

}