/// <summary>
/// Processes the agent message
/// </summary>
/// <param name="agentContext"></param>
/// <param name="messageContext">The agent message agentContext.</param>
/// <returns></returns>
/// <exception cref="AgentFrameworkException">Unsupported message type {messageType}</exception>
public async Task <AgentMessage> ProcessAsync(IAgentContext agentContext, MessageContext messageContext)
{
switch (messageContext.GetMessageType())
{
case MessageTypes.ProofRequest:
{
var request = messageContext.GetMessage <ProofRequestMessage>();
var proofId = await _proofService.ProcessProofRequestAsync(agentContext, request, messageContext.Connection);
messageContext.ContextRecord = await _proofService.GetAsync(agentContext, proofId);
break;
}
case MessageTypes.DisclosedProof:
{
var proof = messageContext.GetMessage <ProofMessage>();
var proofId = await _proofService.ProcessProofAsync(agentContext, proof);
messageContext.ContextRecord = await _proofService.GetAsync(agentContext, proofId);
break;
}
default:
throw new AgentFrameworkException(ErrorCode.InvalidMessage,
$"Unsupported message type {messageContext.GetMessageType()}");
}
return(null);
}
public static async Task <(ProofRecord holderProofRecord, ProofRecord RequestorProofRecord)> ProofProtocolAsync(
IProofService proofService,
IProducerConsumerCollection <AgentMessage> messages,
ConnectionRecord holderConnection, ConnectionRecord requestorConnection,
IAgentContext holderContext,
IAgentContext requestorContext, ProofRequest proofRequestObject)
{
//Requestor sends a proof request
var(message, requestorProofRecord) = await proofService.CreateRequestAsync(requestorContext, proofRequestObject, requestorConnection.Id);
messages.TryAdd(message);
// Holder accepts the proof requests and builds a proof
var proofRequest = FindContentMessage <RequestPresentationMessage>(messages);
Assert.NotNull(proofRequest);
//Holder stores the proof request
var holderProofRequestRecord = await proofService.ProcessRequestAsync(holderContext, proofRequest, holderConnection);
var holderProofRecord = await proofService.GetAsync(holderContext, holderProofRequestRecord.Id);
var holderProofRequest = JsonConvert.DeserializeObject <ProofRequest>(holderProofRecord.RequestJson);
// Auto satify the proof with which ever credentials in the wallet are capable
var requestedCredentials =
await ProofServiceUtils.GetAutoRequestedCredentialsForProofCredentials(holderContext, proofService,
holderProofRequest);
//Holder accepts the proof request and sends a proof
(var proofMessage, _) = await proofService.CreatePresentationAsync(
holderContext,
holderProofRequestRecord.Id,
requestedCredentials);
messages.TryAdd(proofMessage);
//Requestor retrives proof message from their cloud agent
var proof = FindContentMessage <PresentationMessage>(messages);
Assert.NotNull(proof);
//Requestor stores proof
requestorProofRecord = await proofService.ProcessPresentationAsync(requestorContext, proof);
//Requestor verifies proof
var requestorVerifyResult = await proofService.VerifyProofAsync(requestorContext, requestorProofRecord.Id);
//Verify the proof is valid
Assert.True(requestorVerifyResult);
var requestorProofRecordResult = await proofService.GetAsync(requestorContext, requestorProofRecord.Id);
var holderProofRecordResult = await proofService.GetAsync(holderContext, holderProofRecord.Id);
return(holderProofRecordResult, requestorProofRecordResult);
}
public async Task <IActionResult> Details(string proofRecordId)
{
var agentContext = await _agentProvider.GetContextAsync();
var proofRecord = await _proofService.GetAsync(agentContext, proofRecordId);
var request = JsonConvert.DeserializeObject <ProofRequest>(proofRecord.RequestJson);
var model = new ProofsDetailViewModel
{
ProofPartial = JsonConvert.DeserializeObject <PartialProof>(proofRecord.ProofJson),
Name = request.Name
};
return(View(model));
}
public async Task <GetCredentialsForProofResponse> Handle
(
GetCredentialsForProofRequest aGetCredentialsForProofRequest,
CancellationToken aCancellationToken
)
{
IAgentContext agentContext = await AgentProvider.GetContextAsync();
ProofRecord proofRecord = await ProofService.GetAsync(agentContext, aGetCredentialsForProofRequest.ProofId);
ProofRequest proofRequest = JsonConvert.DeserializeObject <ProofRequest>(proofRecord.RequestJson);
//ProofServiceUtils.GetAutoRequestedCredentialsForProofCredentials
List <Credential> credentials =
await ProofService
.ListCredentialsForProofRequestAsync
(
agentContext,
proofRequest,
aGetCredentialsForProofRequest.Referent
);
var response = new GetCredentialsForProofResponse(credentials, aGetCredentialsForProofRequest.CorrelationId);
return(response);
}
private async Task DisplayRequestPresentation(string recordId)
{
IAgentContext context = await _agentContextProvider.GetContextAsync();
ProofRecord proofRecord = await _proofService.GetAsync(context, recordId);
ProofRequestViewModel proofRequest = await _proofAssembler.Assemble(proofRecord);
await _requestPresentationFiller.Fill(proofRequest);
await NavigationService.NavigateToAsync(proofRequest, null, NavigationType.Modal);
}
public async Task <GetProofResponse> Handle
(
GetProofRequest aGetProofRequest,
CancellationToken aCancellationToken
)
{
IAgentContext agentContext = await AgentProvider.GetContextAsync();
ProofRecord proofRecord = await ProofService.GetAsync(agentContext, aGetProofRequest.ProofId);
var response = new GetProofResponse(proofRecord, aGetProofRequest.CorrelationId);
return(await Task.Run(() => response));
}
public async Task ProcessProofInvalidState()
{
//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, await _holderWallet.Pool, TestConstants.DefaultMasterSecret, true, new List <CredentialPreviewAttribute>
{
new CredentialPreviewAttribute("first_name", "Test"),
new CredentialPreviewAttribute("last_name", "Holder")
});
_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 = await AnonCreds.GenerateNonceAsync(),
RequestedAttributes = new Dictionary <string, ProofAttributeInfo>
{
{ "first-name-requirement", new ProofAttributeInfo {
Name = "first_name"
} }
}
};
//Requestor sends a proof request
var(message, _) = await _proofService.CreateRequestAsync(_requestorWallet, proofRequestObject, requestorConnection.Id);
_messages.Add(message);
}
// Holder accepts the proof requests and builds a proof
{
//Holder retrives proof request message from their cloud agent
var proofRequest = FindContentMessage <RequestPresentationMessage>();
Assert.NotNull(proofRequest);
//Holder stores the proof request
var holderProofRequestId = await _proofService.ProcessRequestAsync(_holderWallet, proofRequest, holderConnection);
var holderProofRecord = await _proofService.GetAsync(_holderWallet, holderProofRequestId.Id);
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
});
}
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, var _) = await _proofService.CreatePresentationAsync(_holderWallet, holderProofRequestId.Id,
requestedCredentials);
_messages.Add(proofMessage);
}
//Requestor retrives proof message from their cloud agent
var proof = FindContentMessage <PresentationMessage>();
Assert.NotNull(proof);
//Requestor stores proof
await _proofService.ProcessPresentationAsync(_requestorWallet, proof);
var ex = await Assert.ThrowsAsync <AriesFrameworkException>(async() => await _proofService.ProcessPresentationAsync(_requestorWallet, proof));
Assert.True(ex.ErrorCode == ErrorCode.RecordInInvalidState);
}
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);
}
