/// <summary>
/// Decrypt the encrypted data
/// </summary>
/// <param name="EncryptedText">Encrypted text</param>
/// <param name="Encryptionkey">Your salt key</param>
/// <returns>Returns plain text</returns>
public string DecryptData(string EncryptedText, string Encryptionkey)
{
RijndaelManaged objrij = new RijndaelManaged();
objrij.Mode = CipherMode.CBC;
objrij.Padding = PaddingMode.PKCS7;
objrij.KeySize = 0x80;
objrij.BlockSize = 0x80;
// byte[] encryptedTextByte = Convert.FromBase64String(EncryptedText);
byte[] encryptedTextByte = EncodeUtility.Base64UrlDecode(EncryptedText);
byte[] passBytes = Encoding.UTF8.GetBytes(Encryptionkey);
byte[] EncryptionkeyBytes = new byte[0x10];
int len = passBytes.Length;
if (len > EncryptionkeyBytes.Length)
{
len = EncryptionkeyBytes.Length;
}
Array.Copy(passBytes, EncryptionkeyBytes, len);
objrij.Key = EncryptionkeyBytes;
objrij.IV = EncryptionkeyBytes;
byte[] TextByte = objrij.CreateDecryptor().TransformFinalBlock(encryptedTextByte, 0, encryptedTextByte.Length);
return(Encoding.UTF8.GetString(TextByte)); //it will return readable string
}
/// <summary>
/// Encrypt text
/// </summary>
/// <param name="textData">Plain text</param>
/// <param name="Encryptionkey">Your salt key</param>
/// <returns>Returns encrypted data</returns>
public string EncryptData(string textData, string Encryptionkey)
{
RijndaelManaged objrij = new RijndaelManaged();
//set the mode for operation of the algorithm
objrij.Mode = CipherMode.CBC;
//set the padding mode used in the algorithm.
objrij.Padding = PaddingMode.PKCS7;
//set the size, in bits, for the secret key.
objrij.KeySize = 0x80;
//set the block size in bits for the cryptographic operation.
objrij.BlockSize = 0x80;
//set the symmetric key that is used for encryption & decryption.
byte[] passBytes = Encoding.UTF8.GetBytes(Encryptionkey);
//set the initialization vector (IV) for the symmetric algorithm
byte[] EncryptionkeyBytes = new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
int len = passBytes.Length;
if (len > EncryptionkeyBytes.Length)
{
len = EncryptionkeyBytes.Length;
}
Array.Copy(passBytes, EncryptionkeyBytes, len);
objrij.Key = EncryptionkeyBytes;
objrij.IV = EncryptionkeyBytes;
//Creates symmetric AES object with the current key and initialization vector IV.
ICryptoTransform objtransform = objrij.CreateEncryptor();
byte[] textDataByte = Encoding.UTF8.GetBytes(textData);
//Final transform the test string.
// return Convert.ToBase64String(objtransform.TransformFinalBlock(textDataByte, 0, textDataByte.Length));
return(EncodeUtility.Base64UrlEncode(objtransform.TransformFinalBlock(textDataByte, 0, textDataByte.Length)));
}
