public async Task <DecryptedResponse> Execute(DecryptOfficeDocumentParameter decryptOfficeDocumentParameter, string accessToken, AuthenticateParameter authenticateParameter)
{
if (decryptOfficeDocumentParameter == null)
{
throw new ArgumentNullException(nameof(decryptOfficeDocumentParameter));
}
if (authenticateParameter == null)
{
throw new ArgumentNullException(nameof(authenticateParameter));
}
_decryptOfficeDocumentParameterValidator.Check(decryptOfficeDocumentParameter);
await _getOfficeDocumentAction.Execute(decryptOfficeDocumentParameter.DocumentId);
var jsonWebKey = await _jsonWebKeyRepository.Get(decryptOfficeDocumentParameter.Kid);
if (jsonWebKey == null)
{
throw new BaseDocumentManagementApiException(ErrorCodes.InvalidRequest, string.Format(ErrorDescriptions.TheJsonWebKeyDoesntExist, decryptOfficeDocumentParameter.Kid));
}
var payload = Convert.FromBase64String(decryptOfficeDocumentParameter.Credentials);
byte[] decryptedPayload = null;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
using (var provider = new RSACryptoServiceProvider())
{
provider.FromXmlStringCore(jsonWebKey.SerializedKey);
decryptedPayload = provider.Decrypt(payload, true);
}
}
else
{
using (var rsa = new RSAOpenSsl())
{
rsa.FromXmlString(jsonWebKey.SerializedKey);
decryptedPayload = rsa.Decrypt(payload, RSAEncryptionPadding.OaepSHA1);
}
}
var decryptedContent = Encoding.UTF8.GetString(decryptedPayload);
var splitted = decryptedContent.Split('.');
return(new DecryptedResponse
{
Password = splitted[0],
Salt = splitted[1]
});
}
public void Check(DecryptOfficeDocumentParameter decryptOfficeDocumentParameter)
{
if (decryptOfficeDocumentParameter == null)
{
throw new ArgumentNullException(nameof(decryptOfficeDocumentParameter));
}
if (string.IsNullOrWhiteSpace(decryptOfficeDocumentParameter.DocumentId))
{
throw new BaseDocumentManagementApiException(ErrorCodes.InvalidRequest, string.Format(ErrorDescriptions.ParameterIsMissing, "document_id"));
}
if (string.IsNullOrWhiteSpace(decryptOfficeDocumentParameter.Kid))
{
throw new BaseDocumentManagementApiException(ErrorCodes.InvalidRequest, string.Format(ErrorDescriptions.ParameterIsMissing, "kid"));
}
if (string.IsNullOrWhiteSpace(decryptOfficeDocumentParameter.Credentials))
{
throw new BaseDocumentManagementApiException(ErrorCodes.InvalidRequest, string.Format(ErrorDescriptions.ParameterIsMissing, "credentials"));
}
}
public Task <DecryptedResponse> Decrypt(DecryptOfficeDocumentParameter decryptOfficeDocumentParameter, string accessToken, AuthenticateParameter authenticateParameter)
{
return(_decryptOfficeDocumentAction.Execute(decryptOfficeDocumentParameter, accessToken, authenticateParameter));
}
