Beispiel #1
0
 public string Encrypt(string message)
 {
     LegacyCryptoKey ck = new LegacyCryptoKey();
     ck.BuildKey(this.cryptoKey);
     byte[] data = UTF8Encoding.UTF8.GetBytes(message);
     MemoryStream ms = new MemoryStream();
     DESCryptoServiceProvider csp = new DESCryptoServiceProvider();
     CryptoStream cs = new CryptoStream(ms, csp.CreateEncryptor(ck.Key, ck.IV), CryptoStreamMode.Write);
     cs.Write(data, 0, data.Length);
     cs.FlushFinalBlock();
     byte[] result = new byte[ms.Position];
     ms.Position = 0;
     ms.Read(result, 0, result.Length);
     cs.Close();
     ms.Close();
     string encrypted = Convert.ToBase64String(result);
     return encrypted;
 }
Beispiel #2
0
 public string Decrypt(string message)
 {
     if (message == "" || message == null)
     {
         return String.Empty;
     }
     byte[] bData = Convert.FromBase64String(message);
     LegacyCryptoKey ck = new LegacyCryptoKey();
     ck.BuildKey(this.cryptoKey);
     MemoryStream memoryStream = new MemoryStream(bData.Length);
     DESCryptoServiceProvider desCryptoServiceProvider = new DESCryptoServiceProvider();
     CryptoStream cryptoStream = new CryptoStream(memoryStream, desCryptoServiceProvider.CreateDecryptor(ck.Key, ck.IV), CryptoStreamMode.Read);
     memoryStream.Write(bData, 0, bData.Length);
     memoryStream.Position = 0;
     string decrypted = new StreamReader(cryptoStream).ReadToEnd();
     cryptoStream.Close();
     return decrypted;
 }