| public static Decode ( string base64 ) : byte[] | ||
| base64 | string | |
| Результат | byte[] | |
private string Decrypt(string encData)
{
if (String.IsNullOrEmpty(encData))
{
return(String.Empty);
}
if (EncryptionVersion == 1)
{
var key = EncryptionMode == EncryptionMode.Pattern ? EncryptionV1.GeneratePasswordHash(pattern, userId) : userId;
var iv = new SecureString().AppendChars("LCGoogleApps");
var algorithm = EncryptionV1.CreateCryptoAlgorithm(key, iv);
return(EncryptionV1.Decrypt(Base64.Decode(encData), algorithm));
}
else if (EncryptionVersion == 2)
{
var encBytes = Base64.Decode(encData);
switch (EncryptionMode)
{
case EncryptionMode.Basic:
return(Encoding.UTF8.GetString(SymmetricEncryption.Decrypt(encBytes, userId)));
case EncryptionMode.Pattern:
return(Encoding.UTF8.GetString(SymmetricEncryption.Decrypt(encBytes, pattern.Concat(userId))));
case EncryptionMode.Password:
return(Encoding.UTF8.GetString(SymmetricEncryption.Decrypt(encBytes, password)));
default:
throw new NotImplementedException("Encryption mode not supported: " + EncryptionMode);
}
}
else
{
throw new NotImplementedException("Encryption version not supported: " + EncryptionMode);
}
}
