C#的加密源码，谁能给我相对应的java版的？要求效果一样

[chenjianhuacool]

直接上源码：
public string jiemi(string StrInput, string key1, string key2)
{
string str;
byte[] buffer = Convert.FromBase64String(StrInput);
MemoryStream stream2 = new MemoryStream();
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
CryptoStream stream = new CryptoStream(stream2, provider.CreateDecryptor(Encoding.UTF8.GetBytes(key1), Encoding.UTF8.GetBytes(key2)), CryptoStreamMode.Write);
stream.Write(buffer, 0, buffer.Length);
stream.FlushFinalBlock();
return Encoding.UTF8.GetString(stream2.ToArray());

return str;
}

这个是C#版的加密源码，谁能给我相对应的java版的？