public static async Task <RequestedCredentials> GetAutoRequestedCredentialsForProofCredentials(IAgentContext holderContext,
IProofService proofService, ProofRequest proofRequest)
{
var requestedCredentials = new RequestedCredentials();
foreach (var requestedAttribute in proofRequest.RequestedAttributes)
{
var credentials =
await proofService.ListCredentialsForProofRequestAsync(holderContext, proofRequest,
requestedAttribute.Key);
requestedCredentials.RequestedAttributes.Add(requestedAttribute.Key,
new RequestedAttribute
{
CredentialId = credentials.First().CredentialInfo.Referent,
Revealed = true
});
}
foreach (var requestedAttribute in proofRequest.RequestedPredicates)
{
var credentials =
await proofService.ListCredentialsForProofRequestAsync(holderContext, proofRequest,
requestedAttribute.Key);
requestedCredentials.RequestedPredicates.Add(requestedAttribute.Key,
new RequestedAttribute
{
CredentialId = credentials.First().CredentialInfo.Referent,
Revealed = true
});
}
return(requestedCredentials);
}
/// <summary>
/// Reference https://github.com/hyperledger/aries-framework-dotnet/blob/master/test/Hyperledger.Aries.Tests/Protocols/ProofTests.cs#L644
/// </summary>
public async Task GetRequestedAttributes()
{
try
{
RequestedAttributes.Clear();
if (ProofRequest.RequestedAttributes == null)
{
return;
}
var context = await agentContextProvider.GetContextAsync();
//Get any Available Credentials for each requested attribute
foreach (var requestedAttribute in ProofRequest.RequestedAttributes)
{
List <Credential> attributeCredentials = await proofService.ListCredentialsForProofRequestAsync(context, ProofRequest, requestedAttribute.Key);
var attribute = scope.Resolve <ProofRequestAttributeViewModel>(
new NamedParameter("name", requestedAttribute.Value.Name ?? string.Join(", ", requestedAttribute.Value.Names)),
new NamedParameter("isPredicate", false),
new NamedParameter("attributeCredentials", attributeCredentials),
new NamedParameter("referent", requestedAttribute.Key)
);
RequestedAttributes.Add(attribute);
}
//TODO: Implement Predicate and Restrictions related functionlity
}
catch (Exception xx)
{
}
}
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);
}
public async Task <IActionResult> SendProof(string proofRecordId)
{
var agentContext = await _agentProvider.GetContextAsync();
var proofRecord = await _proofService.GetAsync(agentContext, proofRecordId);
var connectionRecord = await _connectionService.GetAsync(agentContext, proofRecord.ConnectionId);
var request = JsonConvert.DeserializeObject <ProofRequest>(proofRecord.RequestJson);
var requestedCredentials = new RequestedCredentials();
foreach (var requestedAttribute in request.RequestedAttributes)
{
var credentials = await _proofService.ListCredentialsForProofRequestAsync(agentContext, request, requestedAttribute.Key);
requestedCredentials.RequestedAttributes.Add(requestedAttribute.Key,
new RequestedAttribute
{
CredentialId = credentials.First().CredentialInfo.Referent,
Revealed = true
});
}
foreach (var requestedAttribute in request.RequestedPredicates)
{
var credentials =
await _proofService.ListCredentialsForProofRequestAsync(agentContext, request,
requestedAttribute.Key);
requestedCredentials.RequestedPredicates.Add(requestedAttribute.Key,
new RequestedAttribute
{
CredentialId = credentials.First().CredentialInfo.Referent,
Revealed = false
});
}
var(proofMsg, record) = await _proofService.CreatePresentationAsync(agentContext, proofRecordId, requestedCredentials);
await _messageService.SendAsync(agentContext.Wallet, proofMsg, connectionRecord);
return(RedirectToAction("Index"));
}
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 CanConductChallengeFlow()
{
//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();
// Challenger sends a challenge
{
var challengeConfig = new EphemeralChallengeConfiguration
{
Name = "Test",
Type = ChallengeType.Proof,
Contents = new ProofRequestConfiguration
{
RequestedAttributes = new Dictionary <string, ProofAttributeInfo>
{
{ "first-name-requirement", new ProofAttributeInfo {
Name = "first_name"
} }
}
}
};
var challengeConfigId = await _ephemeralChallengeService.CreateChallengeConfigAsync(_requestorWallet, challengeConfig);
(var challenge, var record) = await _ephemeralChallengeService.CreateChallengeAsync(_requestorWallet, challengeConfigId);
Assert.True(!string.IsNullOrEmpty(challenge.ChallengerName));
Assert.True(challenge.RecipientKeys.Count() == 1);
Assert.True(challenge.RecipientKeys.First() == TestConstants.DefaultVerkey);
Assert.True(challenge.ServiceEndpoint == TestConstants.DefaultMockUri);
_messages.Add(challenge);
var result = await _ephemeralChallengeService.GetChallengeStateAsync(_requestorWallet, record.Id);
Assert.True(result == ChallengeState.Challenged);
}
//Challenge responder recieves challenge
{
var challengeMessage = _messages.OfType <EphemeralChallengeMessage>().First();
var proofRequest = challengeMessage.Challenge.Contents.ToObject <ProofRequest>();
var requestedCredentials = new RequestedCredentials();
foreach (var requestedAttribute in proofRequest.RequestedAttributes)
{
var credentials =
await _proofService.ListCredentialsForProofRequestAsync(_holderWallet, proofRequest,
requestedAttribute.Key);
requestedCredentials.RequestedAttributes.Add(requestedAttribute.Key,
new RequestedAttribute
{
CredentialId = credentials.First().CredentialInfo.Referent,
Revealed = true
});
}
foreach (var requestedAttribute in proofRequest.RequestedPredicates)
{
var credentials =
await _proofService.ListCredentialsForProofRequestAsync(_holderWallet, proofRequest,
requestedAttribute.Key);
requestedCredentials.RequestedPredicates.Add(requestedAttribute.Key,
new RequestedAttribute
{
CredentialId = credentials.First().CredentialInfo.Referent,
Revealed = true
});
}
var challenge = await _ephemeralChallengeService.CreateProofChallengeResponseAsync(
_holderWallet, challengeMessage, requestedCredentials);
_messages.Add(challenge);
}
//Challenger recieves challenge response and verifies it
{
var challengeResponseMessage = _messages.OfType <EphemeralChallengeResponseMessage>().First();
var id = await _ephemeralChallengeService.ProcessChallengeResponseAsync(_requestorWallet, challengeResponseMessage);
var result = await _ephemeralChallengeService.GetChallengeStateAsync(_requestorWallet, id);
Assert.True(result == ChallengeState.Accepted);
}
}
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);
}
private async Task CreateRequestedCredential()
{
var requestedCredentials = new RequestedCredentials();
var context = await _agentProvider.GetContextAsync();
_proofRequestAndCredentialMaps.Clear();
RangeEnabledObservableCollection <ProofRequestAndCredentialMap> proofRequestMapList = new RangeEnabledObservableCollection <ProofRequestAndCredentialMap>();
foreach (var requestedAttribute in ProofRequestObject.RequestedAttributes)
{
ProofRequestAndCredentialMap proofCredMap = new ProofRequestAndCredentialMap();
proofCredMap.ProofKey = requestedAttribute.Key;
var credentials = await _proofService.ListCredentialsForProofRequestAsync(context, _proofRequest,
requestedAttribute.Key);
if (credentials.Count != 0)
{
var firstSuitableCredential = credentials.First();
_isSatisfied = true;
proofCredMap.Referent = firstSuitableCredential.CredentialInfo.Referent;
var key = this.RemoveAllSpaceAndToLower(requestedAttribute.Value.Name);
var proofKeyAndCredentialMap = firstSuitableCredential.CredentialInfo.Attributes.ToDictionary(k => RemoveAllSpaceAndToLower(k.Key), v => new KeyValuePair <string, string>(v.Key, v.Value));
if (proofKeyAndCredentialMap.ContainsKey(key))
{
var value = proofKeyAndCredentialMap[key].Value;
var credKey = proofKeyAndCredentialMap[key].Key;
KeyValuePair <string, string> keyValuePair = new KeyValuePair <string, string>(credKey, value);
proofCredMap.CredentialAttribute = keyValuePair;
}
requestedCredentials.RequestedAttributes.Add(requestedAttribute.Key,
new RequestedAttribute
{
CredentialId = firstSuitableCredential.CredentialInfo.Referent,
Revealed = true
});
}
else
{
_isSatisfied = false;
proofCredMap.Referent = "Unavailable";
var key = requestedAttribute.Value.Name;
var value = "Unavailable";
KeyValuePair <string, string> keyValuePair = new KeyValuePair <string, string>(key, value);
proofCredMap.CredentialAttribute = keyValuePair;
requestedCredentials.RequestedAttributes.Add(requestedAttribute.Key,
new RequestedAttribute
{
CredentialId = "Unavailable",
Revealed = true
});
}
proofRequestMapList.Add(proofCredMap);
//requestedCredentials.RequestedAttributes.
//proofAndCredentialAttributesMapping.Add(requestedAttribute, credentials.First().CredentialInfo.Attributes.)
}
foreach (var requestedAttribute in ProofRequestObject.RequestedPredicates)
{
var credentials = await _proofService.ListCredentialsForProofRequestAsync(context, ProofRequestObject,
requestedAttribute.Key);
ProofRequestAndCredentialMap proofCredMap = new ProofRequestAndCredentialMap();
if (credentials.Count != 0)
{
var firstSuitableCredential = credentials.First();
_isSatisfied = true;
proofCredMap.Referent = firstSuitableCredential.CredentialInfo.Referent;
var key = this.RemoveAllSpaceAndToLower(requestedAttribute.Value.Name);
var proofKeyAndCredentialMap = firstSuitableCredential.CredentialInfo.Attributes.ToDictionary(k => RemoveAllSpaceAndToLower(k.Key), v => new KeyValuePair <string, string>(v.Key, v.Value));
if (proofKeyAndCredentialMap.ContainsKey(key))
{
var value = proofKeyAndCredentialMap[key].Value;
var credKey = proofKeyAndCredentialMap[key].Key;
KeyValuePair <string, string> keyValuePair = new KeyValuePair <string, string>(credKey, value);
proofCredMap.CredentialAttribute = keyValuePair;
}
requestedCredentials.RequestedPredicates.Add(requestedAttribute.Key,
new RequestedAttribute
{
CredentialId = firstSuitableCredential.CredentialInfo.Referent,
Revealed = true
});
}
else
{
_isSatisfied = false;
proofCredMap.ProofKey = requestedAttribute.Key;
proofCredMap.Referent = "Unavailable";
var key = requestedAttribute.Value.Name;
var value = "Unavailable";
KeyValuePair <string, string> keyValuePair = new KeyValuePair <string, string>(key, value);
proofCredMap.CredentialAttribute = keyValuePair;
requestedCredentials.RequestedPredicates.Add(requestedAttribute.Key,
new RequestedAttribute
{
CredentialId = "Unavailable",
Revealed = true
});
}
proofRequestMapList.Add(proofCredMap);
}
ProofRequestAndCredentialMaps = proofRequestMapList;
RequestedCredentials = requestedCredentials;
}