public async Task <IActionResult> VerifyPresentation(OperationBody body)
{
var context = await _agentContextProvider.GetContextAsync();
var threadId = body.Id;
var THPresentationExchange = _proofCache.Get <TestHarnessPresentationExchange>(threadId);
var proofRecord = await _proofService.GetByThreadIdAsync(context, THPresentationExchange.ThreadId);
var connectionRecord = await _connectionService.GetAsync(context, proofRecord.ConnectionId);
_logger.LogInformation("VerifyPresentation {proofRecord}", proofRecord.ToJson());
var isValid = await _proofService.VerifyProofAsync(context, THPresentationExchange.RecordId);
if (!isValid)
{
return(Problem("Proof is not valid"));
}
THPresentationExchange.State = TestHarnessPresentationExchangeState.Done;
var ackPresentationMessage = new AckPresentationMessage()
{
Status = "OK"
};
ackPresentationMessage.ThreadFrom(threadId);
await _messageService.SendAsync(context, ackPresentationMessage, connectionRecord);
return(Ok(THPresentationExchange));
}
async Task VerifyProof()
{
var dialog = UserDialogs.Instance.Loading("Verifying");
try
{
var context = await agentContextProvider.GetContextAsync();
bool success = await proofService.VerifyProofAsync(context, proofRecord.Id);
if (dialog.IsShowing)
{
dialog.Hide();
dialog.Dispose();
}
DialogService.Alert(
success ?
"Verified" :
"Failed"
);
}
catch (Exception ex)
{
if (dialog.IsShowing)
{
dialog.Hide();
dialog.Dispose();
}
DialogService.Alert(ex.Message);
}
}
/// <inheritdoc />
public virtual async Task <string> ProcessChallengeResponseAsync(IAgentContext agentContext,
EphemeralChallengeResponseMessage challengeResponse)
{
var threadId = challengeResponse.GetThreadId();
//TODO improve this
var results = await ListChallengesAsync(agentContext, new EqSubquery(TagConstants.LastThreadId, threadId));
var record = results.FirstOrDefault();
if (record == null)
{
throw new AgentFrameworkException(ErrorCode.RecordNotFound, "Challenge not found");
}
if (record.State != ChallengeState.Challenged)
{
throw new AgentFrameworkException(ErrorCode.RecordInInvalidState,
$"Challenge state was invalid. Expected '{ChallengeState.Challenged}', found '{record.State}'");
}
if (record.State != ChallengeState.Challenged)
{
throw new AgentFrameworkException(ErrorCode.RecordNotFound, "Challenge not found");
}
record.Response = challengeResponse.Response;
if (challengeResponse.Status == EphemeralChallengeResponseStatus.Accepted)
{
var result = await ProofService.VerifyProofAsync(agentContext, record.Challenge.Contents.ToJson(),
record.Response.Contents.ToJson());
if (result)
{
await record.TriggerAsync(ChallengeTrigger.AcceptChallenge);
}
else
{
await record.TriggerAsync(ChallengeTrigger.InvalidChallengeResponse);
}
}
else
{
await record.TriggerAsync(ChallengeTrigger.RejectChallenge);
}
await RecordService.UpdateAsync(agentContext.Wallet, record);
EventAggregator.Publish(new ServiceMessageProcessingEvent
{
MessageType = MessageTypes.EphemeralChallenge,
RecordId = record.Id,
ThreadId = challengeResponse.GetThreadId()
});
return(record.Id);
}
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> VerifyPresentation(OperationBody body)
{
// Adding a delay here. It seems that with the removal of the state checks in the tests,
// Some agents are not yet in the appropriate state for this call.
// TODO There may be a better way to do this but adding the wait is a quick fix to get the tests
// running again.
await Task.Delay(10000);
var context = await _agentContextProvider.GetContextAsync();
var threadId = body.Id;
var THPresentationExchange = _proofCache.Get <TestHarnessPresentationExchange>(threadId);
var proofRecord = await _proofService.GetByThreadIdAsync(context, THPresentationExchange.ThreadId);
var connectionRecord = await _connectionService.GetAsync(context, proofRecord.ConnectionId);
_logger.LogInformation("VerifyPresentation {proofRecord}", proofRecord.ToJson());
var isValid = await _proofService.VerifyProofAsync(context, THPresentationExchange.RecordId);
if (!isValid)
{
return(Problem("Proof is not valid"));
}
THPresentationExchange.State = TestHarnessPresentationExchangeState.Done;
var ackPresentationMessage = new AckPresentationMessage()
{
Status = "OK"
};
ackPresentationMessage.ThreadFrom(threadId);
await _messageService.SendAsync(context, ackPresentationMessage, connectionRecord);
return(Ok(THPresentationExchange));
}
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);
}