WebAuthnServer::finishRegistration() - Code Metrics - madwizard-org/webauthn-server - Measure and Improve Code Quality continuously with Scrutinizer

WebAuthnServer::finishRegistration() A
last analyzed 2025-02-14 10:50 UTC

↳ Parent: WebAuthnServer

Complexity

Conditions	3
Paths	3

Size

Total Lines	55
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	9
CRAP Score	3.1406

Importance

Changes	9
Bugs	1	Features	1

Metric	Value
cc	3
eloc	12
c	9
b	1
f	1
nc	3
nop	2
dl	0
loc	55
ccs	9
cts	12
cp	0.75
crap	3.1406
rs	9.8666

How to fix Long Method

<?php

namespace MadWizard\WebAuthn\Server;

use MadWizard\WebAuthn\Attestation\Registry\AttestationFormatRegistryInterface;
use MadWizard\WebAuthn\Config\RelyingPartyInterface;
use MadWizard\WebAuthn\Credential\CredentialId;
use MadWizard\WebAuthn\Credential\CredentialStoreInterface;
use MadWizard\WebAuthn\Credential\UserHandle;
use MadWizard\WebAuthn\Dom\AuthenticationExtensionsClientInputs;
use MadWizard\WebAuthn\Dom\AuthenticatorSelectionCriteria;
use MadWizard\WebAuthn\Dom\PublicKeyCredentialCreationOptions;
use MadWizard\WebAuthn\Dom\PublicKeyCredentialDescriptor;
use MadWizard\WebAuthn\Dom\PublicKeyCredentialInterface;
use MadWizard\WebAuthn\Dom\PublicKeyCredentialParameters;
use MadWizard\WebAuthn\Dom\PublicKeyCredentialRequestOptions;
use MadWizard\WebAuthn\Dom\PublicKeyCredentialRpEntity;
use MadWizard\WebAuthn\Dom\PublicKeyCredentialUserEntity;
use MadWizard\WebAuthn\Dom\ResidentKeyRequirement;
use MadWizard\WebAuthn\Dom\UserVerificationRequirement;
use MadWizard\WebAuthn\Exception\CredentialIdExistsException;
use MadWizard\WebAuthn\Exception\NoCredentialsException;
use MadWizard\WebAuthn\Exception\UntrustedException;
use MadWizard\WebAuthn\Exception\VerificationException;
use MadWizard\WebAuthn\Exception\WebAuthnException;
use MadWizard\WebAuthn\Extension\ExtensionRegistryInterface;
use MadWizard\WebAuthn\Format\ByteBuffer;
use MadWizard\WebAuthn\Metadata\MetadataResolverInterface;
use MadWizard\WebAuthn\Policy\PolicyInterface;
use MadWizard\WebAuthn\Policy\Trust\TrustDecisionManagerInterface;
use MadWizard\WebAuthn\Server\Authentication\AuthenticationContext;
use MadWizard\WebAuthn\Server\Authentication\AuthenticationOptions;
use MadWizard\WebAuthn\Server\Authentication\AuthenticationRequest;
use MadWizard\WebAuthn\Server\Authentication\AuthenticationResultInterface;
use MadWizard\WebAuthn\Server\Authentication\AuthenticationVerifier;
use MadWizard\WebAuthn\Server\Registration\RegistrationContext;
use MadWizard\WebAuthn\Server\Registration\RegistrationOptions;
use MadWizard\WebAuthn\Server\Registration\RegistrationRequest;
use MadWizard\WebAuthn\Server\Registration\RegistrationResultInterface;
use MadWizard\WebAuthn\Server\Registration\RegistrationVerifier;
use Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerAwareTrait;
use Psr\Log\NullLogger;

final class WebAuthnServer implements ServerInterface, LoggerAwareInterface
{
    use LoggerAwareTrait;

    /**
     * @var RelyingPartyInterface
     */
    private $relyingParty;

    /**
     * @var PolicyInterface
     */
    private $policy;

    /**
     * @var CredentialStoreInterface
     */
    private $credentialStore;

    /**
     * @var AttestationFormatRegistryInterface
     */
    private $formatRegistry;

    /**
     * @var MetadataResolverInterface
     */
    private $metadataResolver;

    /**
     * @var TrustDecisionManagerInterface
     */
    private $trustDecisionManager;

    /**
     * @var ExtensionRegistryInterface
     */
    private $extensionRegistry;

    public function __construct(
        RelyingPartyInterface $relyingParty,
        PolicyInterface $policy,
        CredentialStoreInterface $credentialStore,
        AttestationFormatRegistryInterface $formatRegistry,
        MetadataResolverInterface $metadataResolver,
        TrustDecisionManagerInterface $trustDecisionManager,
        ExtensionRegistryInterface $extensionRegistry
    ) {
        $this->relyingParty = $relyingParty;
        $this->policy = $policy;
        $this->credentialStore = $credentialStore;
        $this->formatRegistry = $formatRegistry;
        $this->metadataResolver = $metadataResolver;
        $this->trustDecisionManager = $trustDecisionManager;
        $this->extensionRegistry = $extensionRegistry;
        $this->logger = new NullLogger();
    }

    public function startRegistration(RegistrationOptions $options): RegistrationRequest
    {
        $challenge = $this->createChallenge();

        $creationOptions = new PublicKeyCredentialCreationOptions(
            PublicKeyCredentialRpEntity::fromRelyingParty($this->relyingParty),
            $this->createUserEntity($options->getUser()),
            $challenge,
            $this->getCredentialParameters()
        );

        $creationOptions->setAttestation($options->getAttestation());
        $creationOptions->setTimeout($options->getTimeout());

        $selection = $this->createAuthenticatorSelection($options);

        $creationOptions->setAuthenticatorSelection($selection);
        $extensions = $options->getExtensionInputs();
        if (count($extensions) > 0) {
            $creationOptions->setExtensions(
                AuthenticationExtensionsClientInputs::fromArray($extensions)
            );
        }

        if ($options->getExcludeExistingCredentials()) {
            $credentialIds = $this->credentialStore->getUserCredentialIds($options->getUser()->getUserHandle());
            foreach ($credentialIds as $credential) {
                $creationOptions->addExcludeCredential(
                    new PublicKeyCredentialDescriptor($credential->toBuffer())
                );
            }
        }

        $context = $this->createRegistrationContext($options, $creationOptions);
        return new RegistrationRequest($creationOptions, $context);
    }

    private function createAuthenticatorSelection(RegistrationOptions $options): ?AuthenticatorSelectionCriteria
    {
        $criteria = null;
        $attachment = $options->getAuthenticatorAttachment();
        if ($attachment !== null) {
            $criteria = new AuthenticatorSelectionCriteria();
            $criteria->setAuthenticatorAttachment($attachment);
        }

        $userVerification = $options->getUserVerification();
        if ($userVerification !== null) {
            $criteria = $criteria ?? new AuthenticatorSelectionCriteria();
            $criteria->setUserVerification($userVerification);
        }

        $residentKey = $options->getResidentKey();
        if ($residentKey !== null) {
            $criteria = $criteria ?? new AuthenticatorSelectionCriteria();
            $criteria->setRequireResidentKey($residentKey === ResidentKeyRequirement::REQUIRED);
        }
        return $criteria;
    }

    private function createRegistrationContext(RegistrationOptions $regOptions, PublicKeyCredentialCreationOptions $options): RegistrationContext
    {
        $origin = $this->relyingParty->getOrigin();
        $rpId = $this->relyingParty->getEffectiveId();

        // TODO: mismatch $rp and rp in $options? Check?
        $context = new RegistrationContext($options->getChallenge(), $origin, $rpId, UserHandle::fromBuffer($options->getUserEntity()->getId()));

        $context->setUserPresenceRequired($this->policy->isUserPresenceRequired());

        if ($regOptions->getUserVerification() === UserVerificationRequirement::REQUIRED) {
            $context->setUserVerificationRequired(true);
        }

        foreach ($regOptions->getExtensionInputs() as $input) {
            $context->addExtensionInput($input);
        }
        return $context;
    }

    /**
     * @param PublicKeyCredentialInterface $credential Attestation credential response from the client
     *
     * @throws CredentialIdExistsException
     * @throws VerificationException
     */
    public function finishRegistration(PublicKeyCredentialInterface $credential, RegistrationContext $context): RegistrationResultInterface
    {
        $verifier = new RegistrationVerifier($this->formatRegistry, $this->extensionRegistry);
        $registrationResult = $verifier->verify($credential, $context);

        $response = $credential->getResponse()->asAttestationResponse();


        // 15. If validation is successful, obtain a list of acceptable trust anchors (attestation root certificates or
        //     ECDAA-Issuer public keys) for that attestation type and attestation statement format fmt, from a trusted
        //     source or from policy.

        $metadata = $this->metadataResolver->getMetadata($registrationResult);
        $registrationResult = $registrationResult->withMetadata($metadata);

        // 16. Assess the attestation trustworthiness using the outputs of the verification procedure in step 14,
        //     as follows:
        //       If self attestation was used, check if self attestation is acceptable under Relying Party policy.
        //       If ECDAA was used, verify that the identifier of the ECDAA-Issuer public key used is included in the
        //       set of acceptable trust anchors obtained in step 15.
        //       Otherwise, use the X.509 certificates returned by the verification procedure to verify that the
        //       attestation public key correctly chains up to an acceptable root certificate.

        try {
            $this->trustDecisionManager->verifyTrust($registrationResult, $metadata);
        } catch (UntrustedException $e) {
            throw new VerificationException('The attestation is not trusted: ' . $e->getReason(), 0, $e);
        }

        // 17. Check that the credentialId is not yet registered to any other user. If registration is requested for a
        //     credential that is already registered to a different user, the Relying Party SHOULD fail this
        //     registration ceremony, or it MAY decide to accept the registration, e.g. while deleting the older
        //     registration.
        if ($this->credentialStore->findCredential($registrationResult->getCredentialId())) {
            throw new CredentialIdExistsException('Credential is already registered.');
        }

        // 18. If the attestation statement attStmt verified successfully and is found to be trustworthy, then register
        //     the new credential with the account that was denoted in the options.user passed to create(), by
        //     associating it with the credentialId and credentialPublicKey in the attestedCredentialData in authData,
        //     as appropriate for the Relying Party's system.
        // 19. If the attestation statement attStmt successfully verified but is not trustworthy per step 16 above,
        //     the Relying Party SHOULD fail the registration ceremony.
        //
        //    NOTE: However, if permitted by policy, the Relying Party MAY register the credential ID and credential
        //    public key but treat the credential as one with self attestation (see §6.3.3 Attestation Types).
        //    If doing so, the Relying Party is asserting there is no cryptographic proof that the public key credential
        //    has been generated by a particular authenticator model. See [FIDOSecRef] and [UAFProtocol] for a more
        //    detailed discussion.
        //
        //    Verification of attestation objects requires that the Relying Party has a trusted method of determining
        //    acceptable trust anchors in step 15 above. Also, if certificates are being used, the Relying Party MUST
        //    have access to certificate status information for the intermediate CA certificates. The Relying Party MUST
        //    also be able to build the attestation certificate chain if the client did not provide this chain in the
        //    attestation information.
        return $registrationResult;
    }

    public function startAuthentication(AuthenticationOptions $options): AuthenticationRequest
    {
        $challenge = $this->createChallenge();

        $requestOptions = new PublicKeyCredentialRequestOptions($challenge);
        $requestOptions->setRpId($this->relyingParty->getId());
        $uv = $options->getUserVerification();
        if ($uv !== UserVerificationRequirement::DEFAULT) {
            $requestOptions->setUserVerification($uv);
        }
        $requestOptions->setTimeout($options->getTimeout());

        $this->addAllowCredentials($options, $requestOptions);

        $extensions = $options->getExtensionInputs();
        if (count($extensions) > 0) {
            $requestOptions->setExtensions(
                AuthenticationExtensionsClientInputs::fromArray($extensions)
            );
        }

        $context = $this->createAuthenticationContext($options, $requestOptions);
        return new AuthenticationRequest($requestOptions, $context);
    }

    private function createAuthenticationContext(AuthenticationOptions $authOptions, PublicKeyCredentialRequestOptions $options): AuthenticationContext
    {
        $origin = $this->relyingParty->getOrigin();
        $rpId = $this->relyingParty->getEffectiveId();

        // TODO: mismatch $rp and rp in $policy? Check?
        $context = new AuthenticationContext($options->getChallenge(), $origin, $rpId, $authOptions->getUserHandle());

        if ($authOptions->getUserVerification() === UserVerificationRequirement::REQUIRED) {
            $context->setUserVerificationRequired(true);
        }

        $context->setUserPresenceRequired($this->policy->isUserPresenceRequired());

        $allowCredentials = $options->getAllowCredentials();
        if ($allowCredentials !== null) {
            foreach ($allowCredentials as $credential) {
                $context->addAllowCredentialId(CredentialId::fromBuffer($credential->getId()));
            }
        }
        foreach ($authOptions->getExtensionInputs() as $input) {
            $context->addExtensionInput($input);
        }
        return $context;
    }

    /**
     * @param PublicKeyCredentialInterface $credential Assertion credential response from the client
     *
     * @throws VerificationException
     */
    public function finishAuthentication(PublicKeyCredentialInterface $credential, AuthenticationContext $context): AuthenticationResultInterface
    {
        $verifier = new AuthenticationVerifier($this->credentialStore, $this->extensionRegistry);

        $authenticationResult = $verifier->verifyAuthenticatonAssertion($credential, $context);

        return $authenticationResult;
    }

    /**
     * @throws WebAuthnException
     */
    private function addAllowCredentials(AuthenticationOptions $options, PublicKeyCredentialRequestOptions $requestOptions): void
    {
        $userHandle = $options->getUserHandle();
        if ($userHandle !== null) {
            $credentialIds = $this->credentialStore->getUserCredentialIds($userHandle);
            if (count($credentialIds) === 0) {
                throw new NoCredentialsException('User being authenticated has no credentials.');
            }
            foreach ($credentialIds as $credentialId) {
                $descriptor = new PublicKeyCredentialDescriptor($credentialId->toBuffer());
                $requestOptions->addAllowedCredential($descriptor);
            }
        }

        $credentialIds = $options->getAllowCredentials();
        if (count($credentialIds) > 0) {
            foreach ($credentialIds as $credential) {
                $credentialId = $credential->toBuffer();
                $descriptor = new PublicKeyCredentialDescriptor($credentialId);
                // TODO
//                foreach ($transports as $transport) {
//                    $descriptor->addTransport($transport);
//                }
                $requestOptions->addAllowedCredential($descriptor);
            }
        }
    }

    private function createUserEntity(UserIdentityInterface $user): PublicKeyCredentialUserEntity
    {
        return new PublicKeyCredentialUserEntity(
            $user->getUsername(),
            $user->getUserHandle()->toBuffer(),
            $user->getDisplayName()
        );
    }

    /**
     * @return PublicKeyCredentialParameters[]
     */
    private function getCredentialParameters(): array
    {
        $parameters = [];
        $algorithms = $this->policy->getAllowedAlgorithms();        // TODO: verify server side?
        foreach ($algorithms as $algorithm) {
            $parameters[] = new PublicKeyCredentialParameters($algorithm);
        }
        return $parameters;
    }

    private function createChallenge(): ByteBuffer
    {
        return ByteBuffer::randomBuffer($this->policy->getChallengeLength());
    }
}


1		<?php
2
3		namespace MadWizard\WebAuthn\Server;
4
5		use MadWizard\WebAuthn\Attestation\Registry\AttestationFormatRegistryInterface;
6		use MadWizard\WebAuthn\Config\RelyingPartyInterface;
7		use MadWizard\WebAuthn\Credential\CredentialId;
8		use MadWizard\WebAuthn\Credential\CredentialStoreInterface;
9		use MadWizard\WebAuthn\Credential\UserHandle;
10		use MadWizard\WebAuthn\Dom\AuthenticationExtensionsClientInputs;
11		use MadWizard\WebAuthn\Dom\AuthenticatorSelectionCriteria;
12		use MadWizard\WebAuthn\Dom\PublicKeyCredentialCreationOptions;
13		use MadWizard\WebAuthn\Dom\PublicKeyCredentialDescriptor;
14		use MadWizard\WebAuthn\Dom\PublicKeyCredentialInterface;
15		use MadWizard\WebAuthn\Dom\PublicKeyCredentialParameters;
16		use MadWizard\WebAuthn\Dom\PublicKeyCredentialRequestOptions;
17		use MadWizard\WebAuthn\Dom\PublicKeyCredentialRpEntity;
18		use MadWizard\WebAuthn\Dom\PublicKeyCredentialUserEntity;
19		use MadWizard\WebAuthn\Dom\ResidentKeyRequirement;
20		use MadWizard\WebAuthn\Dom\UserVerificationRequirement;
21		use MadWizard\WebAuthn\Exception\CredentialIdExistsException;
22		use MadWizard\WebAuthn\Exception\NoCredentialsException;
23		use MadWizard\WebAuthn\Exception\UntrustedException;
24		use MadWizard\WebAuthn\Exception\VerificationException;
25		use MadWizard\WebAuthn\Exception\WebAuthnException;
26		use MadWizard\WebAuthn\Extension\ExtensionRegistryInterface;
27		use MadWizard\WebAuthn\Format\ByteBuffer;
28		use MadWizard\WebAuthn\Metadata\MetadataResolverInterface;
29		use MadWizard\WebAuthn\Policy\PolicyInterface;
30		use MadWizard\WebAuthn\Policy\Trust\TrustDecisionManagerInterface;
31		use MadWizard\WebAuthn\Server\Authentication\AuthenticationContext;
32		use MadWizard\WebAuthn\Server\Authentication\AuthenticationOptions;
33		use MadWizard\WebAuthn\Server\Authentication\AuthenticationRequest;
34		use MadWizard\WebAuthn\Server\Authentication\AuthenticationResultInterface;
35		use MadWizard\WebAuthn\Server\Authentication\AuthenticationVerifier;
36		use MadWizard\WebAuthn\Server\Registration\RegistrationContext;
37		use MadWizard\WebAuthn\Server\Registration\RegistrationOptions;
38		use MadWizard\WebAuthn\Server\Registration\RegistrationRequest;
39		use MadWizard\WebAuthn\Server\Registration\RegistrationResultInterface;
40		use MadWizard\WebAuthn\Server\Registration\RegistrationVerifier;
41		use Psr\Log\LoggerAwareInterface;
42		use Psr\Log\LoggerAwareTrait;
43		use Psr\Log\NullLogger;
44
45		final class WebAuthnServer implements ServerInterface, LoggerAwareInterface
46		{
47		use LoggerAwareTrait;
48
49		/**
50		* @var RelyingPartyInterface
51		*/
52		private $relyingParty;
53
54		/**
55		* @var PolicyInterface
56		*/
57		private $policy;
58
59		/**
60		* @var CredentialStoreInterface
61		*/
62		private $credentialStore;
63
64		/**
65		* @var AttestationFormatRegistryInterface
66		*/
67		private $formatRegistry;
68
69		/**
70		* @var MetadataResolverInterface
71		*/
72		private $metadataResolver;
73
74		/**
75		* @var TrustDecisionManagerInterface
76		*/
77		private $trustDecisionManager;
78
79		/**
80		* @var ExtensionRegistryInterface
81		*/
82		private $extensionRegistry;
83
84	18	public function __construct(
85		RelyingPartyInterface $relyingParty,
86		PolicyInterface $policy,
87		CredentialStoreInterface $credentialStore,
88		AttestationFormatRegistryInterface $formatRegistry,
89		MetadataResolverInterface $metadataResolver,
90		TrustDecisionManagerInterface $trustDecisionManager,
91		ExtensionRegistryInterface $extensionRegistry
92		) {
93	18	$this->relyingParty = $relyingParty;
94	18	$this->policy = $policy;
95	18	$this->credentialStore = $credentialStore;
96	18	$this->formatRegistry = $formatRegistry;
97	18	$this->metadataResolver = $metadataResolver;
98	18	$this->trustDecisionManager = $trustDecisionManager;
99	18	$this->extensionRegistry = $extensionRegistry;
100	18	$this->logger = new NullLogger();
101	18	}
102
103	1	public function startRegistration(RegistrationOptions $options): RegistrationRequest
104		{
105	1	$challenge = $this->createChallenge();
106
107	1	$creationOptions = new PublicKeyCredentialCreationOptions(
108	1	PublicKeyCredentialRpEntity::fromRelyingParty($this->relyingParty),
109	1	$this->createUserEntity($options->getUser()),
110		$challenge,
111	1	$this->getCredentialParameters()
112		);
113
114	1	$creationOptions->setAttestation($options->getAttestation());
115	1	$creationOptions->setTimeout($options->getTimeout());
116
117	1	$selection = $this->createAuthenticatorSelection($options);
118
119	1	$creationOptions->setAuthenticatorSelection($selection);
120	1	$extensions = $options->getExtensionInputs();
121	1	if (count($extensions) > 0) {
122		$creationOptions->setExtensions(
123		AuthenticationExtensionsClientInputs::fromArray($extensions)
124		);
125		}
126
127	1	if ($options->getExcludeExistingCredentials()) {
128		$credentialIds = $this->credentialStore->getUserCredentialIds($options->getUser()->getUserHandle());
129		foreach ($credentialIds as $credential) {
130		$creationOptions->addExcludeCredential(
131		new PublicKeyCredentialDescriptor($credential->toBuffer())
132		);
133		}
134		}
135
136	1	$context = $this->createRegistrationContext($options, $creationOptions);
137	1	return new RegistrationRequest($creationOptions, $context);
138		}
139
140	1	private function createAuthenticatorSelection(RegistrationOptions $options): ?AuthenticatorSelectionCriteria
141		{
142	1	$criteria = null;
143	1	$attachment = $options->getAuthenticatorAttachment();
144	1	if ($attachment !== null) {
145		$criteria = new AuthenticatorSelectionCriteria();
146		$criteria->setAuthenticatorAttachment($attachment);
147		}
148
149	1	$userVerification = $options->getUserVerification();
150	1	if ($userVerification !== null) {
151		$criteria = $criteria ?? new AuthenticatorSelectionCriteria();
152		$criteria->setUserVerification($userVerification);
153		}
154
155	1	$residentKey = $options->getResidentKey();
156	1	if ($residentKey !== null) {
157		$criteria = $criteria ?? new AuthenticatorSelectionCriteria();
158		$criteria->setRequireResidentKey($residentKey === ResidentKeyRequirement::REQUIRED);
159		}
160	1	return $criteria;
161		}
162
163	1	private function createRegistrationContext(RegistrationOptions $regOptions, PublicKeyCredentialCreationOptions $options): RegistrationContext
164		{
165	1	$origin = $this->relyingParty->getOrigin();
166	1	$rpId = $this->relyingParty->getEffectiveId();
167
168		// TODO: mismatch $rp and rp in $options? Check?
169	1	$context = new RegistrationContext($options->getChallenge(), $origin, $rpId, UserHandle::fromBuffer($options->getUserEntity()->getId()));
170
171	1	$context->setUserPresenceRequired($this->policy->isUserPresenceRequired());
172
173	1	if ($regOptions->getUserVerification() === UserVerificationRequirement::REQUIRED) {
174		$context->setUserVerificationRequired(true);
175		}
176
177	1	foreach ($regOptions->getExtensionInputs() as $input) {
178		$context->addExtensionInput($input);
179		}
180	1	return $context;
181		}
182
183		/**
184		* @param PublicKeyCredentialInterface $credential Attestation credential response from the client
185		*
186		* @throws CredentialIdExistsException
187		* @throws VerificationException
188		*/
189	1	public function finishRegistration(PublicKeyCredentialInterface $credential, RegistrationContext $context): RegistrationResultInterface
190		{
191	1	$verifier = new RegistrationVerifier($this->formatRegistry, $this->extensionRegistry);
192	1	$registrationResult = $verifier->verify($credential, $context);
193
194	1	$response = $credential->getResponse()->asAttestationResponse();
		0 ignored issues – show Unused Code introduced 2021-02-07 19:41 UTC by Report Bug Copy Issue Report The assignment to `$response` is dead and can be removed. Loading history...
195
196		// 15. If validation is successful, obtain a list of acceptable trust anchors (attestation root certificates or
197		// ECDAA-Issuer public keys) for that attestation type and attestation statement format fmt, from a trusted
198		// source or from policy.
199
200	1	$metadata = $this->metadataResolver->getMetadata($registrationResult);
201	1	$registrationResult = $registrationResult->withMetadata($metadata);
202
203		// 16. Assess the attestation trustworthiness using the outputs of the verification procedure in step 14,
204		// as follows:
205		// If self attestation was used, check if self attestation is acceptable under Relying Party policy.
206		// If ECDAA was used, verify that the identifier of the ECDAA-Issuer public key used is included in the
207		// set of acceptable trust anchors obtained in step 15.
208		// Otherwise, use the X.509 certificates returned by the verification procedure to verify that the
209		// attestation public key correctly chains up to an acceptable root certificate.
210
211		try {
212	1	$this->trustDecisionManager->verifyTrust($registrationResult, $metadata);
213		} catch (UntrustedException $e) {
214		throw new VerificationException('The attestation is not trusted: ' . $e->getReason(), 0, $e);
215		}
216
217		// 17. Check that the credentialId is not yet registered to any other user. If registration is requested for a
218		// credential that is already registered to a different user, the Relying Party SHOULD fail this
219		// registration ceremony, or it MAY decide to accept the registration, e.g. while deleting the older
220		// registration.
221	1	if ($this->credentialStore->findCredential($registrationResult->getCredentialId())) {
222		throw new CredentialIdExistsException('Credential is already registered.');
223		}
224
225		// 18. If the attestation statement attStmt verified successfully and is found to be trustworthy, then register
226		// the new credential with the account that was denoted in the options.user passed to create(), by
227		// associating it with the credentialId and credentialPublicKey in the attestedCredentialData in authData,
228		// as appropriate for the Relying Party's system.
229		// 19. If the attestation statement attStmt successfully verified but is not trustworthy per step 16 above,
230		// the Relying Party SHOULD fail the registration ceremony.
231		//
232		// NOTE: However, if permitted by policy, the Relying Party MAY register the credential ID and credential
233		// public key but treat the credential as one with self attestation (see §6.3.3 Attestation Types).
234		// If doing so, the Relying Party is asserting there is no cryptographic proof that the public key credential
235		// has been generated by a particular authenticator model. See [FIDOSecRef] and [UAFProtocol] for a more
236		// detailed discussion.
237		//
238		// Verification of attestation objects requires that the Relying Party has a trusted method of determining
239		// acceptable trust anchors in step 15 above. Also, if certificates are being used, the Relying Party MUST
240		// have access to certificate status information for the intermediate CA certificates. The Relying Party MUST
241		// also be able to build the attestation certificate chain if the client did not provide this chain in the
242		// attestation information.
243	1	return $registrationResult;
244		}
245
246	1	public function startAuthentication(AuthenticationOptions $options): AuthenticationRequest
247		{
248	1	$challenge = $this->createChallenge();
249
250	1	$requestOptions = new PublicKeyCredentialRequestOptions($challenge);
251	1	$requestOptions->setRpId($this->relyingParty->getId());
252	1	$uv = $options->getUserVerification();
253	1	if ($uv !== UserVerificationRequirement::DEFAULT) {
254	1	$requestOptions->setUserVerification($uv);
255		}
256	1	$requestOptions->setTimeout($options->getTimeout());
257
258	1	$this->addAllowCredentials($options, $requestOptions);
259
260	1	$extensions = $options->getExtensionInputs();
261	1	if (count($extensions) > 0) {
262		$requestOptions->setExtensions(
263		AuthenticationExtensionsClientInputs::fromArray($extensions)
264		);
265		}
266
267	1	$context = $this->createAuthenticationContext($options, $requestOptions);
268	1	return new AuthenticationRequest($requestOptions, $context);
269		}
270
271	1	private function createAuthenticationContext(AuthenticationOptions $authOptions, PublicKeyCredentialRequestOptions $options): AuthenticationContext
272		{
273	1	$origin = $this->relyingParty->getOrigin();
274	1	$rpId = $this->relyingParty->getEffectiveId();
275
276		// TODO: mismatch $rp and rp in $policy? Check?
277	1	$context = new AuthenticationContext($options->getChallenge(), $origin, $rpId, $authOptions->getUserHandle());
278
279	1	if ($authOptions->getUserVerification() === UserVerificationRequirement::REQUIRED) {
280		$context->setUserVerificationRequired(true);
281		}
282
283	1	$context->setUserPresenceRequired($this->policy->isUserPresenceRequired());
284
285	1	$allowCredentials = $options->getAllowCredentials();
286	1	if ($allowCredentials !== null) {
287	1	foreach ($allowCredentials as $credential) {
288	1	$context->addAllowCredentialId(CredentialId::fromBuffer($credential->getId()));
289		}
290		}
291	1	foreach ($authOptions->getExtensionInputs() as $input) {
292		$context->addExtensionInput($input);
293		}
294	1	return $context;
295		}
296
297		/**
298		* @param PublicKeyCredentialInterface $credential Assertion credential response from the client
299		*
300		* @throws VerificationException
301		*/
302	11	public function finishAuthentication(PublicKeyCredentialInterface $credential, AuthenticationContext $context): AuthenticationResultInterface
303		{
304	11	$verifier = new AuthenticationVerifier($this->credentialStore, $this->extensionRegistry);
305
306	11	$authenticationResult = $verifier->verifyAuthenticatonAssertion($credential, $context);
307
308	4	return $authenticationResult;
309		}
310
311		/**
312		* @throws WebAuthnException
313		*/
314	1	private function addAllowCredentials(AuthenticationOptions $options, PublicKeyCredentialRequestOptions $requestOptions): void
315		{
316	1	$userHandle = $options->getUserHandle();
317	1	if ($userHandle !== null) {
318		$credentialIds = $this->credentialStore->getUserCredentialIds($userHandle);
319		if (count($credentialIds) === 0) {
320		throw new NoCredentialsException('User being authenticated has no credentials.');
321		}
322		foreach ($credentialIds as $credentialId) {
323		$descriptor = new PublicKeyCredentialDescriptor($credentialId->toBuffer());
324		$requestOptions->addAllowedCredential($descriptor);
325		}
326		}
327
328	1	$credentialIds = $options->getAllowCredentials();
329	1	if (count($credentialIds) > 0) {
330	1	foreach ($credentialIds as $credential) {
331	1	$credentialId = $credential->toBuffer();
332	1	$descriptor = new PublicKeyCredentialDescriptor($credentialId);
333		// TODO
334		// foreach ($transports as $transport) {
335		// $descriptor->addTransport($transport);
336		// }
337	1	$requestOptions->addAllowedCredential($descriptor);
338		}
339		}
340	1	}
341
342	1	private function createUserEntity(UserIdentityInterface $user): PublicKeyCredentialUserEntity
343		{
344	1	return new PublicKeyCredentialUserEntity(
345	1	$user->getUsername(),
346	1	$user->getUserHandle()->toBuffer(),
347	1	$user->getDisplayName()
348		);
349		}
350
351		/**
352		* @return PublicKeyCredentialParameters[]
353		*/
354	1	private function getCredentialParameters(): array
355		{
356	1	$parameters = [];
357	1	$algorithms = $this->policy->getAllowedAlgorithms(); // TODO: verify server side?
358	1	foreach ($algorithms as $algorithm) {
359	1	$parameters[] = new PublicKeyCredentialParameters($algorithm);
360		}
361	1	return $parameters;
362		}
363
364	2	private function createChallenge(): ByteBuffer
365		{
366	2	return ByteBuffer::randomBuffer($this->policy->getChallengeLength());
367		}
368		}
369

madwizard-org / webauthn-server

WebAuthnServer::finishRegistration() A last analyzed 2025-02-14 10:50 UTC

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WebAuthnServer::finishRegistration() A
last analyzed 2025-02-14 10:50 UTC