TSPRequest oRequest = new TSPCOM.TSPRequest();
            TSPCOM.TSPStamp oStamp;
            CPICom.HashedData20 oHash = new CPICom.HashedData20();

            oHash.Algorithm = (CAPICOM.CAPICOM_HASH_ALGORITHM) CPICom.CPICOM_HASH_ALGORITHM.CAPICOM_HASH_ALGORITHM_GOST3411;
            oHash.Hash("ABC");

            oRequest.Hash = (HashedData) oHash;

            oRequest.UseNonce = true;
            oRequest.PolicyID = "";
            oRequest.CertReq = false;

            oRequest.TSAAddress = "http://localhost:80/tsp/tsp.srf";

            oRequest.TSAAuthType = TSPCOM.TSPCOM_AUTH_TYPE.TSPCOM_AUTH_TYPE_ANONYMOUS;
            oRequest.TSAUserName = "";
            oRequest.TSAPassword = "";
            
            string error = "";
            string result = "";
            try
            {
                oStamp = oRequest.Send(false);
                result = oStamp.Export();

            }
            catch (Exception ex)
            {
                error = ex.Message;
            }