ChatterService.Web.ChatterProxyService.ValidateSignature C# (CSharp) Method

        private void ValidateSignature()
        {
            if (!signedFetch)
            {
                return;
            }

            IncomingWebRequestContext request = WebOperationContext.Current.IncomingRequest;

            IOAuthContext context = new OAuthContextBuilder().FromUri(request.Method, request.UriTemplateMatch.RequestUri);

            // use context.ConsumerKey to fetch information required for signature validation for this consumer.
            if (!signer.ValidateSignature(context, signingContext))
            {
                throw new Exception("Invalid signature : " + request.UriTemplateMatch.RequestUri);
            }
        }