public static bool ValidateRequest(Uri uri, string signatureKey)
{
try
{
UriBuilder uriBuilder = new UriBuilder(uri);
NameValueCollection queryString = HttpUtility.ParseQueryString(uri.Query);
string signature = queryString[signatureKey];
queryString.Remove(signatureKey);
uriBuilder.Query = queryString.ToString();
bool flag = Hmac.Validate(uriBuilder.Uri.PathAndQuery, signature);
if (flag && queryString["ts"] != null && DateTime.ParseExact(queryString["ts"], "r", (IFormatProvider)null) < DateTime.UtcNow)
{
return(false);
}
return(flag);
}
catch (Exception ex)
{
return(false);
}
}
public static bool Validate(string message, string signature)
{
return(Hmac.Validate(message, Convert.FromBase64String(signature)));
}