示例#1
0
        public async Task CredentialProofDemo()
        {
            int events = 0;

            _eventAggregator.GetEventByType <ServiceMessageProcessingEvent>()
            .Where(_ => (_.MessageType == MessageTypes.ProofRequest ||
                         _.MessageType == MessageTypes.DisclosedProof))
            .Subscribe(_ =>
            {
                events++;
            });

            //Setup a connection and issue the credentials to the holder
            var(issuerConnection, holderConnection) = await Scenarios.EstablishConnectionAsync(
                _connectionService, _messages, _issuerWallet, _holderWallet);

            await Scenarios.IssueCredentialAsync(
                _schemaService, _credentialService, _messages, issuerConnection,
                holderConnection, _issuerWallet, _holderWallet, _pool, MasterSecretId, true);

            _messages.Clear();

            //Requestor initialize a connection with the holder
            var(_, requestorConnection) = await Scenarios.EstablishConnectionAsync(
                _connectionService, _messages, _holderWallet, _requestorWallet);

            // Verifier sends a proof request to prover
            {
                var proofRequestObject = new ProofRequest
                {
                    Name                = "ProofReq",
                    Version             = "1.0",
                    Nonce               = "123",
                    RequestedAttributes = new Dictionary <string, ProofAttributeInfo>
                    {
                        { "first-name-requirement", new ProofAttributeInfo {
                              Name = "first_name"
                          } }
                    }
                };

                //Requestor sends a proof request
                await _proofService.SendProofRequestAsync(_requestorWallet, requestorConnection.Id, proofRequestObject);
            }

            // Holder accepts the proof requests and builds a proof
            {
                //Holder retrives proof request message from their cloud agent
                var proofRequest = FindContentMessage <ProofRequestMessage>();
                Assert.NotNull(proofRequest);

                _holderWallet.Connection = holderConnection;
                //Holder stores the proof request
                var holderProofRequestId = await _proofService.ProcessProofRequestAsync(_holderWallet, proofRequest);

                var holderProofRecord = await _proofService.GetAsync(_holderWallet, holderProofRequestId);

                var holderProofObject =
                    JsonConvert.DeserializeObject <ProofRequest>(holderProofRecord.RequestJson);

                var requestedCredentials = new RequestedCredentials();
                foreach (var requestedAttribute in holderProofObject.RequestedAttributes)
                {
                    var credentials =
                        await _proofService.ListCredentialsForProofRequestAsync(_holderWallet, holderProofObject,
                                                                                requestedAttribute.Key);

                    requestedCredentials.RequestedAttributes.Add(requestedAttribute.Key,
                                                                 new RequestedAttribute
                    {
                        CredentialId = credentials.First().CredentialInfo.Referent,
                        Revealed     = true,
                        Timestamp    = DateTimeOffset.UtcNow.ToUnixTimeSeconds()
                    });
                }

                foreach (var requestedAttribute in holderProofObject.RequestedPredicates)
                {
                    var credentials =
                        await _proofService.ListCredentialsForProofRequestAsync(_holderWallet, holderProofObject,
                                                                                requestedAttribute.Key);

                    requestedCredentials.RequestedPredicates.Add(requestedAttribute.Key,
                                                                 new RequestedAttribute
                    {
                        CredentialId = credentials.First().CredentialInfo.Referent,
                        Revealed     = true
                    });
                }

                //Holder accepts the proof request and sends a proof
                var proofMessage = await _proofService.AcceptProofRequestAsync(_holderWallet, holderProofRequestId, requestedCredentials);

                _messages.Add(proofMessage);
            }

            //Requestor retrives proof message from their cloud agent
            var proof = FindContentMessage <ProofMessage>();

            Assert.NotNull(proof);

            _requestorWallet.Connection = requestorConnection;
            //Requestor stores proof
            var requestorProofId = await _proofService.ProcessProofAsync(_requestorWallet, proof);

            //Requestor verifies proof
            var requestorVerifyResult = await _proofService.VerifyProofAsync(_requestorWallet, requestorProofId);

            ////Verify the proof is valid
            Assert.True(requestorVerifyResult);

            Assert.True(events == 2);

            ////Get the proof from both parties wallets
            //var requestorProof = await _proofService.GetProof(_requestorWallet, requestorProofId);
            //var holderProof = await _proofService.GetProof(_holderWallet, holderProofRequestId);

            ////Verify that both parties have a copy of the proof
            //Assert.Equal(requestorProof, holderProof);
        }