File "Server.php"
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<?php
declare(strict_types=1);
/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2021 Spomky-Labs
*
* This software may be modified and distributed under the terms
* of the MIT license. See the LICENSE file for details.
*/
namespace Webauthn;
use Assert\Assertion;
use Cose\Algorithm\Algorithm;
use Cose\Algorithm\ManagerFactory;
use Cose\Algorithm\Signature\ECDSA;
use Cose\Algorithm\Signature\EdDSA;
use Cose\Algorithm\Signature\RSA;
use Jose\Component\KeyManagement\JWKFactory;
use Jose\Component\Signature\Algorithm\RS256;
use Psr\Http\Client\ClientInterface;
use Psr\Http\Message\RequestFactoryInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Log\LoggerInterface;
use Psr\Log\NullLogger;
use Webauthn\AttestationStatement\AndroidKeyAttestationStatementSupport;
use Webauthn\AttestationStatement\AndroidSafetyNetAttestationStatementSupport;
use Webauthn\AttestationStatement\AttestationObjectLoader;
use Webauthn\AttestationStatement\AttestationStatementSupportManager;
use Webauthn\AttestationStatement\FidoU2FAttestationStatementSupport;
use Webauthn\AttestationStatement\NoneAttestationStatementSupport;
use Webauthn\AttestationStatement\PackedAttestationStatementSupport;
use Webauthn\AttestationStatement\TPMAttestationStatementSupport;
use Webauthn\AuthenticationExtensions\AuthenticationExtensionsClientInputs;
use Webauthn\AuthenticationExtensions\ExtensionOutputCheckerHandler;
use Webauthn\Counter\CounterChecker;
use Webauthn\MetadataService\MetadataStatementRepository;
use Webauthn\TokenBinding\IgnoreTokenBindingHandler;
use Webauthn\TokenBinding\TokenBindingHandler;
class Server
{
/**
* @var int
*/
public $timeout = 60000;
/**
* @var int
*/
public $challengeSize = 32;
/**
* @var PublicKeyCredentialRpEntity
*/
private $rpEntity;
/**
* @var ManagerFactory
*/
private $coseAlgorithmManagerFactory;
/**
* @var PublicKeyCredentialSourceRepository
*/
private $publicKeyCredentialSourceRepository;
/**
* @var TokenBindingHandler
*/
private $tokenBindingHandler;
/**
* @var ExtensionOutputCheckerHandler
*/
private $extensionOutputCheckerHandler;
/**
* @var string[]
*/
private $selectedAlgorithms;
/**
* @var MetadataStatementRepository|null
*/
private $metadataStatementRepository;
/**
* @var ClientInterface|null
*/
private $httpClient;
/**
* @var string|null
*/
private $googleApiKey;
/**
* @var RequestFactoryInterface|null
*/
private $requestFactory;
/**
* @var CounterChecker|null
*/
private $counterChecker;
/**
* @var LoggerInterface
*/
private $logger;
/**
* @var string[]
*/
private $securedRelyingPartyId = [];
public function __construct(PublicKeyCredentialRpEntity $relyingParty, PublicKeyCredentialSourceRepository $publicKeyCredentialSourceRepository, ?MetadataStatementRepository $metadataStatementRepository = null)
{
if (null !== $metadataStatementRepository) {
@trigger_error('The argument "metadataStatementRepository" is deprecated since version 3.3 and will be removed in 4.0. Please use the method "setMetadataStatementRepository".', E_USER_DEPRECATED);
}
$this->rpEntity = $relyingParty;
$this->logger = new NullLogger();
$this->coseAlgorithmManagerFactory = new ManagerFactory();
$this->coseAlgorithmManagerFactory->add('RS1', new RSA\RS1());
$this->coseAlgorithmManagerFactory->add('RS256', new RSA\RS256());
$this->coseAlgorithmManagerFactory->add('RS384', new RSA\RS384());
$this->coseAlgorithmManagerFactory->add('RS512', new RSA\RS512());
$this->coseAlgorithmManagerFactory->add('PS256', new RSA\PS256());
$this->coseAlgorithmManagerFactory->add('PS384', new RSA\PS384());
$this->coseAlgorithmManagerFactory->add('PS512', new RSA\PS512());
$this->coseAlgorithmManagerFactory->add('ES256', new ECDSA\ES256());
$this->coseAlgorithmManagerFactory->add('ES256K', new ECDSA\ES256K());
$this->coseAlgorithmManagerFactory->add('ES384', new ECDSA\ES384());
$this->coseAlgorithmManagerFactory->add('ES512', new ECDSA\ES512());
$this->coseAlgorithmManagerFactory->add('Ed25519', new EdDSA\Ed25519());
$this->selectedAlgorithms = ['RS256', 'RS512', 'PS256', 'PS512', 'ES256', 'ES512', 'Ed25519'];
$this->publicKeyCredentialSourceRepository = $publicKeyCredentialSourceRepository;
$this->tokenBindingHandler = new IgnoreTokenBindingHandler();
$this->extensionOutputCheckerHandler = new ExtensionOutputCheckerHandler();
$this->metadataStatementRepository = $metadataStatementRepository;
}
public function setMetadataStatementRepository(MetadataStatementRepository $metadataStatementRepository): self
{
$this->metadataStatementRepository = $metadataStatementRepository;
return $this;
}
/**
* @param string[] $selectedAlgorithms
*/
public function setSelectedAlgorithms(array $selectedAlgorithms): self
{
$this->selectedAlgorithms = $selectedAlgorithms;
return $this;
}
public function setTokenBindingHandler(TokenBindingHandler $tokenBindingHandler): self
{
$this->tokenBindingHandler = $tokenBindingHandler;
return $this;
}
public function addAlgorithm(string $alias, Algorithm $algorithm): self
{
$this->coseAlgorithmManagerFactory->add($alias, $algorithm);
$this->selectedAlgorithms[] = $alias;
$this->selectedAlgorithms = array_unique($this->selectedAlgorithms);
return $this;
}
public function setExtensionOutputCheckerHandler(ExtensionOutputCheckerHandler $extensionOutputCheckerHandler): self
{
$this->extensionOutputCheckerHandler = $extensionOutputCheckerHandler;
return $this;
}
/**
* @param string[] $securedRelyingPartyId
*/
public function setSecuredRelyingPartyId(array $securedRelyingPartyId): self
{
Assertion::allString($securedRelyingPartyId, 'Invalid list. Shall be a list of strings');
$this->securedRelyingPartyId = $securedRelyingPartyId;
return $this;
}
/**
* @param PublicKeyCredentialDescriptor[] $excludedPublicKeyDescriptors
*/
public function generatePublicKeyCredentialCreationOptions(PublicKeyCredentialUserEntity $userEntity, ?string $attestationMode = null, array $excludedPublicKeyDescriptors = [], ?AuthenticatorSelectionCriteria $criteria = null, ?AuthenticationExtensionsClientInputs $extensions = null): PublicKeyCredentialCreationOptions
{
$coseAlgorithmManager = $this->coseAlgorithmManagerFactory->create($this->selectedAlgorithms);
$publicKeyCredentialParametersList = [];
foreach ($coseAlgorithmManager->all() as $algorithm) {
$publicKeyCredentialParametersList[] = new PublicKeyCredentialParameters(
PublicKeyCredentialDescriptor::CREDENTIAL_TYPE_PUBLIC_KEY,
$algorithm::identifier()
);
}
$criteria = $criteria ?? new AuthenticatorSelectionCriteria();
$extensions = $extensions ?? new AuthenticationExtensionsClientInputs();
$challenge = random_bytes($this->challengeSize);
return PublicKeyCredentialCreationOptions::create(
$this->rpEntity,
$userEntity,
$challenge,
$publicKeyCredentialParametersList
)
->excludeCredentials($excludedPublicKeyDescriptors)
->setAuthenticatorSelection($criteria)
->setAttestation($attestationMode ?? PublicKeyCredentialCreationOptions::ATTESTATION_CONVEYANCE_PREFERENCE_NONE)
->setExtensions($extensions)
->setTimeout($this->timeout)
;
}
/**
* @param PublicKeyCredentialDescriptor[] $allowedPublicKeyDescriptors
*/
public function generatePublicKeyCredentialRequestOptions(?string $userVerification = null, array $allowedPublicKeyDescriptors = [], ?AuthenticationExtensionsClientInputs $extensions = null): PublicKeyCredentialRequestOptions
{
return PublicKeyCredentialRequestOptions::create(random_bytes($this->challengeSize))
->setRpId($this->rpEntity->getId())
->setUserVerification($userVerification ?? PublicKeyCredentialRequestOptions::USER_VERIFICATION_REQUIREMENT_PREFERRED)
->allowCredentials($allowedPublicKeyDescriptors)
->setTimeout($this->timeout)
->setExtensions($extensions ?? new AuthenticationExtensionsClientInputs())
;
}
public function loadAndCheckAttestationResponse(string $data, PublicKeyCredentialCreationOptions $publicKeyCredentialCreationOptions, ServerRequestInterface $serverRequest): PublicKeyCredentialSource
{
$attestationStatementSupportManager = $this->getAttestationStatementSupportManager();
$attestationObjectLoader = AttestationObjectLoader::create($attestationStatementSupportManager)
->setLogger($this->logger)
;
$publicKeyCredentialLoader = PublicKeyCredentialLoader::create($attestationObjectLoader)
->setLogger($this->logger)
;
$publicKeyCredential = $publicKeyCredentialLoader->load($data);
$authenticatorResponse = $publicKeyCredential->getResponse();
Assertion::isInstanceOf($authenticatorResponse, AuthenticatorAttestationResponse::class, 'Not an authenticator attestation response');
$authenticatorAttestationResponseValidator = new AuthenticatorAttestationResponseValidator(
$attestationStatementSupportManager,
$this->publicKeyCredentialSourceRepository,
$this->tokenBindingHandler,
$this->extensionOutputCheckerHandler,
$this->metadataStatementRepository
);
$authenticatorAttestationResponseValidator->setLogger($this->logger);
return $authenticatorAttestationResponseValidator->check($authenticatorResponse, $publicKeyCredentialCreationOptions, $serverRequest, $this->securedRelyingPartyId);
}
public function loadAndCheckAssertionResponse(string $data, PublicKeyCredentialRequestOptions $publicKeyCredentialRequestOptions, ?PublicKeyCredentialUserEntity $userEntity, ServerRequestInterface $serverRequest): PublicKeyCredentialSource
{
$attestationStatementSupportManager = $this->getAttestationStatementSupportManager();
$attestationObjectLoader = AttestationObjectLoader::create($attestationStatementSupportManager)
->setLogger($this->logger)
;
$publicKeyCredentialLoader = PublicKeyCredentialLoader::create($attestationObjectLoader)
->setLogger($this->logger)
;
$publicKeyCredential = $publicKeyCredentialLoader->load($data);
$authenticatorResponse = $publicKeyCredential->getResponse();
Assertion::isInstanceOf($authenticatorResponse, AuthenticatorAssertionResponse::class, 'Not an authenticator assertion response');
$authenticatorAssertionResponseValidator = new AuthenticatorAssertionResponseValidator(
$this->publicKeyCredentialSourceRepository,
$this->tokenBindingHandler,
$this->extensionOutputCheckerHandler,
$this->coseAlgorithmManagerFactory->create($this->selectedAlgorithms),
$this->counterChecker
);
$authenticatorAssertionResponseValidator->setLogger($this->logger);
return $authenticatorAssertionResponseValidator->check(
$publicKeyCredential->getRawId(),
$authenticatorResponse,
$publicKeyCredentialRequestOptions,
$serverRequest,
null !== $userEntity ? $userEntity->getId() : null,
$this->securedRelyingPartyId
);
}
public function setCounterChecker(CounterChecker $counterChecker): self
{
$this->counterChecker = $counterChecker;
return $this;
}
public function setLogger(LoggerInterface $logger): self
{
$this->logger = $logger;
return $this;
}
public function enforceAndroidSafetyNetVerification(ClientInterface $client, string $apiKey, RequestFactoryInterface $requestFactory): self
{
$this->httpClient = $client;
$this->googleApiKey = $apiKey;
$this->requestFactory = $requestFactory;
return $this;
}
private function getAttestationStatementSupportManager(): AttestationStatementSupportManager
{
$attestationStatementSupportManager = new AttestationStatementSupportManager();
$attestationStatementSupportManager->add(new NoneAttestationStatementSupport());
$attestationStatementSupportManager->add(new FidoU2FAttestationStatementSupport());
if (class_exists(RS256::class) && class_exists(JWKFactory::class)) {
$androidSafetyNetAttestationStatementSupport = new AndroidSafetyNetAttestationStatementSupport();
if (null !== $this->httpClient && null !== $this->googleApiKey && null !== $this->requestFactory) {
$androidSafetyNetAttestationStatementSupport
->enableApiVerification($this->httpClient, $this->googleApiKey, $this->requestFactory)
->setLeeway(2000)
->setMaxAge(60000)
;
}
$attestationStatementSupportManager->add($androidSafetyNetAttestationStatementSupport);
}
$attestationStatementSupportManager->add(new AndroidKeyAttestationStatementSupport());
$attestationStatementSupportManager->add(new TPMAttestationStatementSupport());
$coseAlgorithmManager = $this->coseAlgorithmManagerFactory->create($this->selectedAlgorithms);
$attestationStatementSupportManager->add(new PackedAttestationStatementSupport($coseAlgorithmManager));
return $attestationStatementSupportManager;
}
}