public IActionResult AesEncrypt([FromBody] AesViewModel viewModel)
{
var mode = int.Parse(viewModel.Mode);
EncodingInformation keyEncoding = (EncodingInformation)int.Parse(viewModel.KeyEncoding);
EncodingInformation IVEncoding = (EncodingInformation)int.Parse(viewModel.IVEncoding);
EncodingInformation encoding = (EncodingInformation)int.Parse(viewModel.Encoding);
CustomAes aes = new CustomAes()
{
CipherMode = (BlockCipherMode)mode
};
byte[] key = null;
byte[] iv = null;
switch (keyEncoding)
{
case EncodingInformation.HEX:
key = StringHelper.StringHexToByteArray(viewModel.Key.ToUpper());
break;
case EncodingInformation.BINARY_STRING:
key = StringHelper.BinaryStringToBytes(viewModel.Key);
break;
default:
throw new ArgumentOutOfRangeException();
}
switch (IVEncoding)
{
case EncodingInformation.HEX:
iv = StringHelper.StringHexToByteArray(viewModel.IV.ToUpper());
break;
case EncodingInformation.BINARY_STRING:
iv = StringHelper.BinaryStringToBytes(viewModel.IV);
break;
default:
throw new ArgumentOutOfRangeException();
}
byte[] message = null;
switch (encoding)
{
case EncodingInformation.ASCII:
{
message = Encoding.ASCII.GetBytes(viewModel.Message);
break;
}
case EncodingInformation.HEX:
{
message = StringHelper.StringHexToByteArray(viewModel.Message);
break;
}
case EncodingInformation.BINARY_STRING:
{
message = StringHelper.BinaryStringToBytes(viewModel.Message);
break;
}
case EncodingInformation.BASE64:
{
message = Convert.FromBase64String(viewModel.Message);
break;
}
default:
throw new ArgumentOutOfRangeException();
}
byte[] encrypted = null;
try
{
encrypted = aes.Encrypt(message, key, iv);
}
catch (Exception e)
{
return(BadRequest(new { Result = false, Message = e.Message }));
}
return(Json(encrypted));
}
public IActionResult AesDecrypt([FromBody] AesViewModel viewModel)
{
var mode = int.Parse(viewModel.Mode);
var messageEncoding = int.Parse(viewModel.Encoding);
EncodingInformation keyEncoding = (EncodingInformation)int.Parse(viewModel.KeyEncoding);
EncodingInformation IVEncoding = (EncodingInformation)int.Parse(viewModel.IVEncoding);
byte[] message = null;
try
{
message = Convert.FromBase64String(viewModel.Message);
}
catch (Exception)
{
string msg = "Niepoprawny format Base64!";
return(BadRequest(new { Result = false, Message = msg }));
}
byte[] key = null;
byte[] iv = null;
switch (keyEncoding)
{
case EncodingInformation.HEX:
key = StringHelper.StringHexToByteArray(viewModel.Key);
break;
case EncodingInformation.BINARY_STRING:
key = StringHelper.BinaryStringToBytes(viewModel.Key);
break;
default:
throw new ArgumentOutOfRangeException();
}
switch (IVEncoding)
{
case EncodingInformation.HEX:
iv = StringHelper.StringHexToByteArray(viewModel.IV);
break;
case EncodingInformation.BINARY_STRING:
iv = StringHelper.BinaryStringToBytes(viewModel.IV);
break;
default:
throw new ArgumentOutOfRangeException();
}
CustomAes aes = new CustomAes(viewModel.Padding)
{
CipherMode = (BlockCipherMode)mode
};
byte[] decrypted = null;
try
{
decrypted = aes.Decrypt(message, key, iv);
}
catch (Exception e)
{
return(BadRequest(new { Result = false, Message = e.Message }));
}
return(Json(decrypted));
}