Examples with AuthenticationExtensionsAuthenticatorOutputs com.webauthn4j.data.extension.authenticator.AuthenticationExtensionsAuthenticatorOutputs used on opensource projects

Example 1 with AuthenticationExtensionsAuthenticatorOutputs

use of com.webauthn4j.data.extension.authenticator.AuthenticationExtensionsAuthenticatorOutputs in project webauthn4j by webauthn4j.

the class WebAuthnModelAuthenticator method getAssertion.

public GetAssertionResponse getAssertion(GetAssertionRequest getAssertionRequest, AuthenticationEmulationOption authenticationEmulationOption) {
    byte flags = 0;
    // Check if all the supplied parameters are syntactically well-formed and of the correct length.
    // If not, return an error code equivalent to "UnknownError" and terminate the operation.
    // TODO
    // Let credentialOptions be a new empty set of public key credential sources.
    List<PublicKeyCredentialSource> credentialOptions = new ArrayList<>();
    // If allowCredentialDescriptorList was supplied, then for each descriptor of allowCredentialDescriptorList:
    List<PublicKeyCredentialDescriptor> allowCredentialDescriptorList = getAssertionRequest.getAllowCredentialDescriptorList();
    if (allowCredentialDescriptorList != null && !allowCredentialDescriptorList.isEmpty()) {
        for (PublicKeyCredentialDescriptor credentialDescriptor : getAssertionRequest.getAllowCredentialDescriptorList()) {
            // Let credSource be the result of looking up descriptor.id in this authenticator.
            PublicKeyCredentialSource credSource = lookup(credentialDescriptor.getId());
            if (credSource != null) {
                credentialOptions.add(credSource);
            }
        }
    } else // Otherwise (allowCredentialDescriptorList was not supplied),
    // for each key -> credSource of this authenticator’s credentials map, append credSource to credentialOptions.
    {
        for (Map.Entry<CredentialMapKey, PublicKeyCredentialSource> entry : credentialMap.entrySet()) {
            credentialOptions.add(entry.getValue());
        }
    }
    // Remove any items from credentialOptions whose rpId is not equal to rpId.
    credentialOptions = credentialOptions.stream().filter(item -> item.getRpId().equals(getAssertionRequest.getRpId())).collect(Collectors.toList());
    // If credentialOptions is now empty, return an error code equivalent to "NotAllowedError" and terminate the operation.
    if (credentialOptions.isEmpty()) {
        throw new NotAllowedException("No matching authenticator found");
    }
    // If requireUserVerification is true, the method of obtaining user consent MUST include user verification.
    if (getAssertionRequest.isRequireUserVerification()) {
        flags |= BIT_UV;
    }
    // If requireUserPresence is true, the method of obtaining user consent MUST include a test of user presence.
    if (getAssertionRequest.isRequireUserPresence()) {
        flags |= BIT_UP;
    }
    // If the user does not consent, return an error code equivalent to "NotAllowedError" and terminate the operation.
    // TODO
    PublicKeyCredentialSource selectedCredential = credentialOptions.get(0);
    // Let processedExtensions be the result of authenticator extension processing for each supported
    // extension identifier -> authenticator extension input in extensions.
    AuthenticationExtensionsAuthenticatorOutputs<AuthenticationExtensionAuthenticatorOutput> processedExtensions = new AuthenticationExtensionsAuthenticatorOutputs<>();
    if (!processedExtensions.getKeys().isEmpty()) {
        flags |= BIT_ED;
    }
    // Increment the RP ID-associated signature counter or the global signature counter value,
    // depending on which approach is implemented by the authenticator, by some positive value.
    countUp();
    // Let authenticatorData be the byte array specified in §6.1 Authenticator data including processedExtensions,
    // if any, as the extensions and excluding attestedCredentialData.
    byte[] rpIdHash = MessageDigestUtil.createSHA256().digest(getAssertionRequest.getRpId().getBytes(StandardCharsets.UTF_8));
    AuthenticatorData<AuthenticationExtensionAuthenticatorOutput> authenticatorDataObject = new AuthenticatorData<>(rpIdHash, flags, counter, processedExtensions);
    byte[] authenticatorData = authenticatorDataConverter.convert(authenticatorDataObject);
    // Let signature be the assertion signature of the concatenation authenticatorData || hash using
    // the privateKey of selectedCredential as shown in Figure 2, below. A simple, undelimited concatenation is
    // safe to use here because the authenticator data describes its own length.
    // The hash of the serialized client data (which potentially has a variable length) is always the last element.
    byte[] clientDataHash = getAssertionRequest.getHash();
    byte[] signedData = ByteBuffer.allocate(authenticatorData.length + clientDataHash.length).put(authenticatorData).put(clientDataHash).array();
    byte[] signature = TestDataUtil.calculateSignature(selectedCredential.getPrivateKey().getPrivateKey(), signedData);
    // If any error occurred while generating the assertion signature,
    // return an error code equivalent to "UnknownError" and terminate the operation.
    // Return to the user agent:
    GetAssertionResponse getAssertionResponse = new GetAssertionResponse();
    getAssertionResponse.setCredentialId(selectedCredential.getId());
    getAssertionResponse.setAuthenticatorData(authenticatorData);
    getAssertionResponse.setSignature(signature);
    getAssertionResponse.setUserHandle(selectedCredential.getUserHandle());
    return getAssertionResponse;
}

Example 2 with AuthenticationExtensionsAuthenticatorOutputs

use of com.webauthn4j.data.extension.authenticator.AuthenticationExtensionsAuthenticatorOutputs in project webauthn4j by webauthn4j.

the class AuthenticatorDataConverter method convertToExtensions.

@Nullable
<T extends ExtensionAuthenticatorOutput> AuthenticationExtensionsAuthenticatorOutputs<T> convertToExtensions(@NonNull ByteBuffer byteBuffer) {
    // Since convertToExtensions is called when ED flag is set, return empty AuthenticationExtensionsAuthenticatorOutputs even when remaining is zero.
    if (byteBuffer.remaining() == 0) {
        return new AuthenticationExtensionsAuthenticatorOutputs<>();
    }
    byte[] remaining = new byte[byteBuffer.remaining()];
    byteBuffer.get(remaining);
    ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(remaining);
    AuthenticationExtensionsAuthenticatorOutputsEnvelope<T> envelope = cborConverter.readValue(byteArrayInputStream, new TypeReference<AuthenticationExtensionsAuthenticatorOutputsEnvelope<T>>() {
    });
    if (envelope == null) {
        return null;
    }
    int leftoverLength = remaining.length - envelope.getLength();
    byteBuffer.position(byteBuffer.position() - leftoverLength);
    return envelope.getAuthenticationExtensionsAuthenticatorOutputs();
}

Example 3 with AuthenticationExtensionsAuthenticatorOutputs

use of com.webauthn4j.data.extension.authenticator.AuthenticationExtensionsAuthenticatorOutputs in project webauthn4j by webauthn4j.

the class AuthenticatorImplTest method getter_setter_test.

@Test
void getter_setter_test() {
    AttestedCredentialData attestedCredentialData = TestDataUtil.createAttestedCredentialData();
    AttestationStatement attestationStatement = TestAttestationStatementUtil.createFIDOU2FAttestationStatement();
    AuthenticatorImpl authenticator = new AuthenticatorImpl(TestDataUtil.createAttestedCredentialData(), TestAttestationStatementUtil.createBasicPackedAttestationStatement(), 0);
    AuthenticationExtensionsAuthenticatorOutputs<RegistrationExtensionAuthenticatorOutput> authenticatorExtensions = new AuthenticationExtensionsAuthenticatorOutputs<>();
    AuthenticationExtensionsClientOutputs<RegistrationExtensionClientOutput> clientExtensions = new AuthenticationExtensionsClientOutputs<>();
    Set<AuthenticatorTransport> transports = Collections.singleton(AuthenticatorTransport.USB);
    authenticator.setAttestedCredentialData(attestedCredentialData);
    authenticator.setAttestationStatement(attestationStatement);
    authenticator.setTransports(transports);
    authenticator.setCounter(1);
    authenticator.setAuthenticatorExtensions(authenticatorExtensions);
    authenticator.setClientExtensions(clientExtensions);
    assertAll(() -> assertThat(authenticator.getAttestedCredentialData()).isEqualTo(attestedCredentialData), () -> assertThat(authenticator.getAttestationStatement()).isEqualTo(attestationStatement), () -> assertThat(authenticator.getTransports()).isEqualTo(transports), () -> assertThat(authenticator.getCounter()).isEqualTo(1), () -> assertThat(authenticator.getAuthenticatorExtensions()).isEqualTo(authenticatorExtensions), () -> assertThat(authenticator.getClientExtensions()).isEqualTo(clientExtensions));
}