/// <summary>
/// Validates nonce in request and response.
/// </summary>
/// <param name="request">Request against which this response was produced.</param>
/// <exception cref="ArgumentNullException">
/// <strong>request</strong> parameter is null.
/// </exception>
/// <remarks>Nonce validation failure is added to <see cref="ResponseErrors"/> property.</remarks>
public void ValidateNonce(TspRfc3161Request request)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
validateNonce(request);
}
void validateNonce(TspRfc3161Request request)
{
if (request.UseNonce && !NonceReceived)
{
ResponseErrors |= TspValidationErrorStatus.MissingNonce;
}
if (request.UseNonce && NonceReceived)
{
Byte[] reqNonce = request.GetNonceBytes();
Byte[] rspNonce = GetNonceBytes();
if (reqNonce.Intersect(rspNonce).Count() != rspNonce.Length)
{
ResponseErrors |= TspValidationErrorStatus.NonceMismatch;
}
}
}