private EncryptDecryptKey GetEncryptKey()
{
EncryptDecryptKey okey = new EncryptDecryptKey();
string encKey = "";
Random random = new Random();
int i = random.Next(25);
encKey = _generateKey[i];
okey.KeyIndex = i;
okey.KeyValue = encKey;
return(okey);
}
public string Encrypt(string stringToEncrypt)
{
try
{
_encryptDecryptKey = GetEncryptKey();
_key = Encoding.UTF8.GetBytes(_encryptDecryptKey.KeyValue);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray = Encoding.UTF8.GetBytes(stringToEncrypt);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms,
des.CreateEncryptor(_key, _iv), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return(Convert.ToBase64String(ms.ToArray()) + _encryptDecryptKey.KeyIndex.ToString("00"));
}
catch (Exception e)
{
return(e.Message);
}
}