关于加密和解密的方法

 1  public class EncryptOrDecryptPassword
 2     {
 3        public string DecryptPassword(string password)
 4        {
 5            try
 6            {
 7                UTF8Encoding encode = new UTF8Encoding();
 8                Decoder utf8Decode = encode.GetDecoder();
 9                byte[] decodeByte = Convert.FromBase64String(password);
10                int charCount = utf8Decode.GetCharCount(decodeByte, 0, decodeByte.Length);
11                char[] decodeChar = new char[charCount];
12                utf8Decode.GetChars(decodeByte, 0, decodeByte.Length, decodeChar, 0);
13                string result = new String(decodeChar);
14                return result;
15            }
16            catch (Exception ex)
17            {
18                throw new Exception("Error in decoding password:" + ex.Message);
19            }
20        }
21 
22        public string EncryptedPwd(string password)
23        {
24            try
25            {
26                byte[] en_Data = new byte[password.Length];
27                en_Data = Encoding.UTF8.GetBytes(password);
28                string encodedData = Convert.ToBase64String(en_Data);
29                return encodedData;
30            }
31            catch (Exception ex)
32            {
33                throw new Exception("Error in encode password: " + ex.Message);
34            }
35 
36        }
37     }

 1  class Program
 2     {
 3         static string inPassword = string.Empty;
 4         static string outPassword = string.Empty;
 5         static void Main(string[] args)
 6         {
 7             Console.WriteLine("Please input your password:");
 8             inPassword = Console.ReadLine();
 9             EncryptOrDecryptPassword encrytOrDecryptPassword = new EncryptOrDecryptPassword();
10             string tempPWD = encrytOrDecryptPassword.EncryptedPwd(inPassword);
11             Console.WriteLine(tempPWD);
12             outPassword = encrytOrDecryptPassword.DecryptPassword(tempPWD);
13             Console.WriteLine(outPassword);
14             Console.ReadKey();
15         }
16     }