private async Task AcceptProofRequest()
{
if (_proofRecord.State != ProofState.Requested)
{
await DialogService.AlertAsync(string.Format(AppResources.ProofStateShouldBeMessage, ProofStateTranslator.Translate(ProofState.Requested)));
return;
}
RequestedCredentials requestedCredentials = new RequestedCredentials()
{
RequestedAttributes = new Dictionary <string, RequestedAttribute>(),
RequestedPredicates = new Dictionary <string, RequestedAttribute>()
};
foreach (ProofAttributeViewModel proofAttribute in Attributes)
{
if (proofAttribute.IsPredicate)
{
requestedCredentials.RequestedPredicates.Add(proofAttribute.Id, new RequestedAttribute {
CredentialId = proofAttribute.CredentialId, Revealed = proofAttribute.IsRevealed
});
}
else
{
requestedCredentials.RequestedAttributes.Add(proofAttribute.Id, new RequestedAttribute {
CredentialId = proofAttribute.CredentialId, Revealed = proofAttribute.IsRevealed
});
}
}
// TODO: Mettre le Timestamp à null car lorsqu'il est présent, la création de la preuve ne marche pas. Pourquoi?
//foreach (var keyValue in requestedCredentials.RequestedAttributes.Values)
//{
// keyValue.Timestamp = null;
//}
var context = await _agentContextProvider.GetContextAsync();
ProofRecord proofRecord = await _recordService.GetAsync <ProofRecord>(context.Wallet, _proofRecord.Id);
var(msg, rec) = await _proofService.CreatePresentationAsync(context, proofRecord.Id, requestedCredentials);
if (string.IsNullOrEmpty(proofRecord.ConnectionId))
{
await _messageService.SendAsync(context.Wallet, msg, proofRecord.GetTag("RecipientKey"), proofRecord.GetTag("ServiceEndpoint"));
}
else
{
ConnectionRecord connectionRecord = await _recordService.GetAsync <ConnectionRecord>(context.Wallet, proofRecord.ConnectionId);
await _messageService.SendAsync(context.Wallet, msg, connectionRecord);
}
_eventAggregator.Publish(new ApplicationEvent {
Type = ApplicationEventType.ProofRequestUpdated
});
await NavigationService.PopModalAsync();
}
private async Task <string> CreateProofJsonAsync(IAgentContext agentContext,
RequestedCredentials requestedCredentials, string requestJson)
{
var provisioningRecord = await ProvisioningService.GetProvisioningAsync(agentContext.Wallet);
var credentialObjects = new List <CredentialInfo>();
foreach (var credId in requestedCredentials.GetCredentialIdentifiers())
{
credentialObjects.Add(
JsonConvert.DeserializeObject <CredentialInfo>(
await AnonCreds.ProverGetCredentialAsync(agentContext.Wallet, credId)));
}
var schemas = await BuildSchemasAsync(await agentContext.Pool,
credentialObjects
.Select(x => x.SchemaId)
.Distinct());
var definitions = await BuildCredentialDefinitionsAsync(await agentContext.Pool,
credentialObjects
.Select(x => x.CredentialDefinitionId)
.Distinct());
var revocationStates = await BuildRevocationStatesAsync(await agentContext.Pool,
credentialObjects,
requestedCredentials);
var proofJson = await AnonCreds.ProverCreateProofAsync(agentContext.Wallet, requestJson,
requestedCredentials.ToJson(), provisioningRecord.MasterSecretId, schemas, definitions,
revocationStates);
return(proofJson);
}
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);
}
private async Task <string> BuildRevocationStatesAsync(Pool pool,
IEnumerable <CredentialInfo> credentialObjects,
RequestedCredentials requestedCredentials)
{
var allCredentials = new List <RequestedAttribute>();
allCredentials.AddRange(requestedCredentials.RequestedAttributes.Values);
allCredentials.AddRange(requestedCredentials.RequestedPredicates.Values);
var result = new Dictionary <string, Dictionary <string, JObject> >();
foreach (var requestedCredential in allCredentials)
{
// ReSharper disable once PossibleMultipleEnumeration
var credential = credentialObjects.First(x => x.Referent == requestedCredential.CredentialId);
if (credential.RevocationRegistryId == null)
{
continue;
}
var timestamp = requestedCredential.Timestamp ??
throw new Exception(
"Timestamp must be provided for credential that supports revocation");
if (result.ContainsKey(credential.RevocationRegistryId) &&
result[credential.RevocationRegistryId].ContainsKey($"{timestamp}"))
{
continue;
}
var registryDefinition =
await LedgerService.LookupRevocationRegistryDefinitionAsync(pool, null,
credential.RevocationRegistryId);
var delta = await LedgerService.LookupRevocationRegistryDeltaAsync(pool,
credential.RevocationRegistryId, -1, timestamp);
var tailsfile = await TailsService.EnsureTailsExistsAsync(pool, credential.RevocationRegistryId);
var tailsReader = await TailsService.OpenTailsAsync(tailsfile);
var state = await AnonCreds.CreateRevocationStateAsync(tailsReader, registryDefinition.ObjectJson,
delta.ObjectJson, (long)delta.Timestamp, credential.CredentialRevocationId);
if (!result.ContainsKey(credential.RevocationRegistryId))
{
result.Add(credential.RevocationRegistryId, new Dictionary <string, JObject>());
}
result[credential.RevocationRegistryId].Add($"{timestamp}", JObject.Parse(state));
// TODO: Revocation state should provide the state between a certain period
// that can be requested in the proof request in the 'non_revocation' field.
}
return(result.ToJson());
}
/// <summary>
/// Reference https://github.com/hyperledger/aries-framework-dotnet/blob/master/src/Hyperledger.Aries.TestHarness/AgentScenarios.cs#L214
/// </summary>
private async Task CreatePresentation()
{
base.IsBusy = true;
var dialog = UserDialogs.Instance.Loading("Presenting Proof...");
try
{
var requestedCredentials = new RequestedCredentials();
var requestedAttributes = RequestedAttributes.Where(x => x.SelectedCredential != null && !x.IsPredicate)
.Select(y => new KeyValuePair <string, RequestedAttribute>(y.AttributeReferent, new RequestedAttribute
{
CredentialId = y.SelectedCredential.Credential.CredentialInfo.Referent,
Revealed = true
})
).ToDictionary(z => z.Key, z => z.Value);
//TODO: Implement Predicate related functionlity
if (requestedAttributes != null && requestedAttributes.Count > 0)
{
requestedCredentials.RequestedAttributes = requestedAttributes;
var context = await agentContextProvider.GetContextAsync();
if (requestPresentationMessage != null)
{
var result = await proofService.CreatePresentationAsync(context, requestPresentationMessage, requestedCredentials);
}
else
{
var(proofMsg, holderRecord) = await proofService.CreatePresentationAsync(context, proofRecord.Id, requestedCredentials);
await messageService.SendAsync(context, proofMsg, connection);
}
}
eventAggregator.Publish(new ApplicationEvent()
{
Type = ApplicationEventType.RefreshProofRequests
});
await NavigationService.NavigateBackAsync();
}
catch (Exception exception)
{
await Application.Current.MainPage.DisplayAlert("Error", exception.Message, "Ok");
}
finally
{
base.IsBusy = false;
dialog?.Hide();
dialog?.Dispose();
}
}
/// <inheritdoc />
public virtual async Task <ProofMessage> CreateProofAsync(Wallet wallet, Pool pool, string proofRequestId,
RequestedCredentials requestedCredentials)
{
var record = await RecordService.GetAsync <ProofRecord>(wallet, proofRequestId);
var connection = await ConnectionService.GetAsync(wallet, record.ConnectionId);
var provisioningRecord = await ProvisioningService.GetProvisioningAsync(wallet);
var credentialObjects = new List <CredentialInfo>();
foreach (var credId in requestedCredentials.GetCredentialIdentifiers())
{
credentialObjects.Add(
JsonConvert.DeserializeObject <CredentialInfo>(
await AnonCreds.ProverGetCredentialAsync(wallet, credId)));
}
var schemas = await BuildSchemasAsync(pool,
credentialObjects
.Select(x => x.SchemaId)
.Distinct());
var definitions = await BuildCredentialDefinitionsAsync(pool,
credentialObjects
.Select(x => x.CredentialDefinitionId)
.Distinct());
var revocationStates = await BuildRevocationStatesAsync(pool,
credentialObjects,
requestedCredentials);
var proofJson = await AnonCreds.ProverCreateProofAsync(wallet, record.RequestJson,
requestedCredentials.ToJson(), provisioningRecord.MasterSecretId, schemas, definitions,
revocationStates);
record.ProofJson = proofJson;
await record.TriggerAsync(ProofTrigger.Accept);
await RecordService.UpdateAsync(wallet, record);
var proof = await MessageSerializer.PackSealedAsync <ProofMessage>(
new ProofDetails
{
ProofJson = proofJson,
RequestNonce = JsonConvert.DeserializeObject <ProofRequest>(record.RequestJson).Nonce
}, wallet, connection.MyVk, connection.TheirVk);
proof.Type = MessageUtils.FormatDidMessageType(connection.TheirDid, MessageTypes.DisclosedProof);
return(proof);
}
/// <inheritdoc />
public virtual async Task <ProofMessage> CreateProofAsync(IAgentContext agentContext, string proofRequestId,
RequestedCredentials requestedCredentials)
{
var record = await GetAsync(agentContext, proofRequestId);
if (record.State != ProofState.Requested)
{
throw new AgentFrameworkException(ErrorCode.RecordInInvalidState,
$"Proof state was invalid. Expected '{ProofState.Requested}', found '{record.State}'");
}
var provisioningRecord = await ProvisioningService.GetProvisioningAsync(agentContext.Wallet);
var credentialObjects = new List <CredentialInfo>();
foreach (var credId in requestedCredentials.GetCredentialIdentifiers())
{
credentialObjects.Add(
JsonConvert.DeserializeObject <CredentialInfo>(
await AnonCreds.ProverGetCredentialAsync(agentContext.Wallet, credId)));
}
var schemas = await BuildSchemasAsync(agentContext.Pool,
credentialObjects
.Select(x => x.SchemaId)
.Distinct());
var definitions = await BuildCredentialDefinitionsAsync(agentContext.Pool,
credentialObjects
.Select(x => x.CredentialDefinitionId)
.Distinct());
var revocationStates = await BuildRevocationStatesAsync(agentContext.Pool,
credentialObjects,
requestedCredentials);
var proofJson = await AnonCreds.ProverCreateProofAsync(agentContext.Wallet, record.RequestJson,
requestedCredentials.ToJson(), provisioningRecord.MasterSecretId, schemas, definitions,
revocationStates);
record.ProofJson = proofJson;
await record.TriggerAsync(ProofTrigger.Accept);
await RecordService.UpdateAsync(agentContext.Wallet, record);
return(new ProofMessage
{
ProofJson = proofJson,
RequestNonce = JsonConvert.DeserializeObject <ProofRequest>(record.RequestJson).Nonce
});
}
/// <inheritdoc />
public virtual async Task AcceptProofRequestAsync(Wallet wallet, Pool pool, string proofRequestId,
RequestedCredentials requestedCredentials)
{
var request = await RecordService.GetAsync <ProofRecord>(wallet, proofRequestId);
var connection = await ConnectionService.GetAsync(wallet, request.ConnectionId);
var proof = await CreateProofAsync(wallet, pool, proofRequestId, requestedCredentials);
await RouterService.ForwardAsync(new ForwardEnvelopeMessage
{
Content = proof.ToJson(),
Type = MessageUtils.FormatDidMessageType(connection.TheirDid, MessageTypes.Forward)
}, connection.Endpoint);
}
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"));
}
/// <inheritdoc />
public virtual async Task <ProofMessage> AcceptProofRequestAsync(IAgentContext agentContext, string proofRequestId,
RequestedCredentials requestedCredentials)
{
var request = await GetAsync(agentContext, proofRequestId);
if (request.State != ProofState.Requested)
{
throw new AgentFrameworkException(ErrorCode.RecordInInvalidState,
$"Proof record state was invalid. Expected '{ProofState.Requested}', found '{request.State}'");
}
var connection = await ConnectionService.GetAsync(agentContext, request.ConnectionId);
if (connection.State != ConnectionState.Connected)
{
throw new AgentFrameworkException(ErrorCode.RecordInInvalidState,
$"Connection state was invalid. Expected '{ConnectionState.Connected}', found '{connection.State}'");
}
return(await CreateProofAsync(agentContext, proofRequestId, requestedCredentials));
}
public async Task <RequestedCredentials> buildCredentials()
{
var _proofService = App.Container.Resolve <IProofService>() as DefaultProofService;
var _credentialService = App.Container.Resolve <ICredentialService>();
var requestedCredentials = new RequestedCredentials();
var context = await _contextProvider.GetContextAsync();
var proofRequest = JsonConvert.DeserializeObject <ProofRequest>(_proofRequestTransport.Record.RequestJson);
foreach (var requestedAttribute in proofRequest.RequestedAttributes)
{
var credentials =
await _proofService.ListCredentialsForProofRequestAsync(context, proofRequest,
requestedAttribute.Key);
string credentialId = "";
if (credentials.Any())
{
credentialId = credentials.First().CredentialInfo.Referent;
}
else
{
credentialId = _credential.Id;
}
if (credentialId != null)
{
requestedCredentials.RequestedAttributes.Add(requestedAttribute.Key,
new RequestedAttribute
{
CredentialId = credentialId,
Revealed = true
});
}
}
return(requestedCredentials);
}
/// <inheritdoc />
public virtual async Task <EphemeralChallengeResponseMessage> CreateProofChallengeResponseAsync(IAgentContext agentContext, EphemeralChallengeMessage message, RequestedCredentials credentials)
{
if (message.Challenge.Type != ChallengeType.Proof)
{
throw new AgentFrameworkException(ErrorCode.InvalidMessage, "Challenge.Type != Proof");
}
var challengeResponse = new EphemeralChallengeResponseMessage
{
Id = Guid.NewGuid().ToString(),
Status = EphemeralChallengeResponseStatus.Accepted
};
var proofRequest = message.Challenge.Contents.ToObject <ProofRequest>();
var proof = await ProofService.CreateProofAsync(agentContext, proofRequest, credentials);
challengeResponse.Response = new EphemeralChallengeContents
{
Type = ChallengeType.Proof,
Contents = JsonConvert.DeserializeObject <JObject>(proof)
};
challengeResponse.ThreadFrom(message);
return(challengeResponse);
}
public async Task AcceptProofRequestCredentialInvalidState()
{
//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
await _proofService.CreatePresentationAsync(_holderWallet, holderProofRequestId.Id, requestedCredentials);
var ex = await Assert.ThrowsAsync <AriesFrameworkException>(async() => await _proofService.CreatePresentationAsync(_holderWallet, holderProofRequestId.Id,
requestedCredentials));
Assert.True(ex.ErrorCode == ErrorCode.RecordInInvalidState);
}
/// <inheritdoc />
public virtual async Task <(ProofMessage, ConnectionRecord)> CreateProofAsync(IAgentContext agentContext,
string proofRequestId, RequestedCredentials requestedCredentials)
{
var record = await GetAsync(agentContext, proofRequestId);
var connection = await ConnectionService.GetAsync(agentContext, record.ConnectionId);
if (record.State != ProofState.Requested)
{
throw new AgentFrameworkException(ErrorCode.RecordInInvalidState,
$"Proof state was invalid. Expected '{ProofState.Requested}', found '{record.State}'");
}
var proofJson = await CreateProofJsonAsync(agentContext, requestedCredentials, record.RequestJson);
if (proofJson.Contains("\"rev_reg_id\":null"))
{
String[] separator = { "\"rev_reg_id\":null" };
String[] proofJsonList = proofJson.Split(separator, StringSplitOptions.None);
proofJson = proofJsonList[0] + "\"rev_reg_id\":null,\"timestamp\":null}]}";
}
record.ProofJson = proofJson;
await record.TriggerAsync(ProofTrigger.Accept);
await RecordService.UpdateAsync(agentContext.Wallet, record);
var threadId = record.GetTag(TagConstants.LastThreadId);
var proofMsg = new ProofMessage
{
ProofJson = proofJson
};
proofMsg.ThreadFrom(threadId);
return(proofMsg, connection);
}
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);
}
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 AcceptProofRequestCredentialInvalidState()
{
//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
await _proofService.AcceptProofRequestAsync(_holderWallet, holderProofRequestId, requestedCredentials);
var ex = await Assert.ThrowsAsync <AgentFrameworkException>(async() => await _proofService.AcceptProofRequestAsync(_holderWallet, holderProofRequestId,
requestedCredentials));
Assert.True(ex.ErrorCode == ErrorCode.RecordInInvalidState);
}
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;
}
private async Task SelectCredentialsForProofAsync(IAgentContext agentContext, ProofRecord proof, ConnectionRecord connection)
{
var requestJson = (JObject)JsonConvert.DeserializeObject(proof.RequestJson);
JObject _requestedAttributes = (JObject)requestJson["requested_attributes"];
JObject _requestedPredicates = (JObject)requestJson["requested_predicates"];
IList <string> _requestedAttributesKeys = _requestedAttributes?.Properties().Select(p => p.Name).ToList();
IList <string> _requestedPredicatesKeys = _requestedPredicates?.Properties().Select(p => p.Name).ToList();
JToken cred_def_id = null;
try
{
cred_def_id = _requestedAttributes[_requestedAttributesKeys[0]]["restrictions"][0]["cred_def_id"];
}
catch (Exception)
{
cred_def_id = null;
}
var credentials = new List <CredentialRecord>();
if (cred_def_id != null)
{
credentials = await RecordService.SearchAsync <CredentialRecord>(agentContext.Wallet,
SearchQuery.And(SearchQuery.Equal(nameof(CredentialRecord.State), CredentialState.Issued.ToString("G")),
SearchQuery.Equal(nameof(CredentialRecord.CredentialDefinitionId), cred_def_id.ToString())), null, 100);
}
else
{
credentials = await RecordService.SearchAsync <CredentialRecord>(agentContext.Wallet,
SearchQuery.Equal(nameof(CredentialRecord.State), CredentialState.Issued.ToString("G")), null, 100);
}
bool credentialFound = false;
if (credentials.Count > 0)
{
Dictionary <string, RequestedAttribute> requestedAttributes = new Dictionary <string, RequestedAttribute>();
Dictionary <string, RequestedAttribute> requestedPredicates = new Dictionary <string, RequestedAttribute>();
foreach (var credential in credentials)
{
if (!credentialFound)
{
IEnumerable <CredentialAttribute> Attributes = credential.CredentialAttributesValues
.Select(p =>
new CredentialAttribute()
{
Name = p.Name,
Value = p.Value?.ToString(),
Type = "Text"
})
.ToList();
foreach (var item in _requestedAttributesKeys)
{
foreach (var attrib in Attributes)
{
if (_requestedAttributes[item]["name"].ToString() == attrib.Name)
{
RequestedAttribute requestedAttribute = new RequestedAttribute();
requestedAttribute.CredentialId = credential.CredentialId;
requestedAttribute.Revealed = true;
requestedAttribute.Timestamp = ((DateTimeOffset)DateTime.UtcNow).ToUnixTimeMilliseconds();
requestedAttributes.Add(item, requestedAttribute);
credentialFound = true;
}
}
if (!credentialFound)
{
requestedAttributes.Clear();
}
}
foreach (var item in _requestedPredicatesKeys)
{
RequestedAttribute requestedAttribute = new RequestedAttribute();
requestedAttribute.CredentialId = credential.CredentialId;
requestedAttribute.Timestamp = ((DateTimeOffset)DateTime.UtcNow).ToUnixTimeMilliseconds();
requestedPredicates.Add(item, requestedAttribute);
}
}
}
if (credentialFound)
{
RequestedCredentials requestedCredentials = new RequestedCredentials();
requestedCredentials.RequestedAttributes = requestedAttributes;
requestedCredentials.RequestedPredicates = requestedPredicates;
var proofJson = await CreateProofJsonAsync(agentContext, requestedCredentials, proof.RequestJson);
var threadId = proof.GetTag(TagConstants.LastThreadId);
var proofMsg = new ProofMessage
{
ProofJson = proofJson
};
proofMsg.ThreadFrom(threadId);
await MessageService.SendAsync(agentContext.Wallet, proofMsg, connection);
}
}
}
