public async Task <string> DecryptAsync(DecryptionModel model)
{
byte[] iv = new byte[16];
byte[] buffer = Convert.FromBase64String(model.Data);
using (Aes aes = Aes.Create())
{
try
{
aes.Key = Encoding.UTF8.GetBytes(_encryptionKeyService.GetKey());
aes.IV = iv;
ICryptoTransform decryptor = aes.CreateDecryptor(aes.Key, aes.IV);
using (MemoryStream memoryStream = new MemoryStream(buffer))
{
using (CryptoStream cryptoStream = new CryptoStream((Stream)memoryStream, decryptor, CryptoStreamMode.Read))
{
using (StreamReader streamReader = new StreamReader((Stream)cryptoStream))
{
return(await streamReader.ReadToEndAsync());
}
}
}
}
catch (Exception)
{
throw new Exception("Message could not be decrypted with current encryption key");
}
}
}
public async Task <IActionResult> Decrypt(DecryptionModel model)
{
var result = new ExpandoObject();
result.TryAdd("secret", await _encryptionService.DecryptAsync(model));
return(Ok(result));
}
public async Task <string> DecryptAsync(DecryptionModel model)
{
try
{
var response = await _apiClient.Client.PostAsJsonAsync("decrypt", model);
var result = await response.Content.ReadAsStringAsync();
if (response.IsSuccessStatusCode)
{
return(JsonConvert.DeserializeObject <string>(result));
}
else
{
throw new ApiException(JsonConvert.DeserializeObject <ApiErrorResult>(result));
}
}
catch (Exception)
{
throw new ApiException("Encryption service is unavailable");
}
}
public async Task <IActionResult> Decrypt([FromBody] DecryptionModel model)
{
return(Ok(await _encryptionService.DecryptAsync(model)));
}
