Encryption Method:
public string Encrypt(string secureUserData , bool useHashing) { byte[] keyArray; byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(secureUserData ); string key = string.Empty; byte[] resultArray; key = ConfigurationManager.AppSettings.Get("SecurityKey"); if (useHashing) { MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider(); keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key)); hashmd5.Clear(); } else { keyArray = UTF8Encoding.UTF8.GetBytes(key); } TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider(); tdes.Key = keyArray; tdes.Mode = CipherMode.ECB; tdes.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = tdes.CreateEncryptor(); resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); tdes.Clear(); return Convert.ToBase64String(resultArray, 0, resultArray.Length); }
Decryption Method:
public string Decrypt(string cipherString, bool useHashing) { byte[] keyArray; byte[] toEncryptArray = Convert.FromBase64String(cipherString); byte[] resultArray; string key = string.Empty; key = ConfigurationManager.AppSettings.Get("SecurityKey"); // Get the key from Web.Config file if (useHashing) { MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider(); keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key)); hashmd5.Clear(); } else { keyArray = UTF8Encoding.UTF8.GetBytes(key); } TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider(); tdes.Key = keyArray; tdes.Mode = CipherMode.ECB; tdes.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = tdes.CreateDecryptor(); resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); tdes.Clear(); return UTF8Encoding.UTF8.GetString(resultArray); }
thanks