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<?php |
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namespace MadWizard\WebAuthn\Server\Registration; |
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use MadWizard\WebAuthn\Attestation\AttestationObject; |
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use MadWizard\WebAuthn\Attestation\AuthenticatorData; |
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use MadWizard\WebAuthn\Attestation\Identifier\AttestationKeyIdentifier; |
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use MadWizard\WebAuthn\Attestation\Identifier\IdentifierInterface; |
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use MadWizard\WebAuthn\Attestation\Statement\FidoU2fAttestationStatement; |
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use MadWizard\WebAuthn\Attestation\TrustAnchor\MetadataInterface; |
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use MadWizard\WebAuthn\Attestation\TrustPath\CertificateTrustPath; |
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use MadWizard\WebAuthn\Attestation\Verifier\VerificationResult; |
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use MadWizard\WebAuthn\Credential\CredentialId; |
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use MadWizard\WebAuthn\Crypto\CoseKeyInterface; |
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use MadWizard\WebAuthn\Pki\CertificateDetails; |
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final class RegistrationResult implements RegistrationResultInterface // TODO: use interface everywhere |
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{ // TODO: add credentialRegistration? |
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/** |
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* @var CredentialId |
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*/ |
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private $credentialId; |
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/** |
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* @var AuthenticatorData |
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*/ |
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private $authenticatorData; |
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/** |
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* @var VerificationResult |
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*/ |
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private $verificationResult; |
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/** |
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* @var MetadataInterface|null |
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*/ |
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private $metadata; |
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/** |
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* @var AttestationObject |
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*/ |
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private $attestationObject; |
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/** |
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* @var IdentifierInterface|false|null |
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*/ |
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private $cachedIdentifier = false; |
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public function __construct(CredentialId $credentialId, AuthenticatorData $authenticatorData, AttestationObject $attestationObject, VerificationResult $verificationResult, ?MetadataInterface $metadata = null) |
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{ |
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$this->credentialId = $credentialId; |
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$this->authenticatorData = $authenticatorData; |
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$this->verificationResult = $verificationResult; |
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$this->metadata = $metadata; |
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$this->attestationObject = $attestationObject; |
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} |
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public function getCredentialId(): CredentialId |
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{ |
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return $this->credentialId; |
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} |
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public function getPublicKey(): CoseKeyInterface |
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{ |
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return $this->authenticatorData->getKey(); |
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} |
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public function getVerificationResult(): VerificationResult |
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{ |
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return $this->verificationResult; |
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} |
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public function getSignatureCounter(): int |
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{ |
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return $this->authenticatorData->getSignCount(); |
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} |
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public function getAttestationObject(): AttestationObject |
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{ |
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return $this->attestationObject; |
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} |
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public function getAuthenticatorData(): AuthenticatorData |
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{ |
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return $this->authenticatorData; |
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} |
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public function getMetadata(): ?MetadataInterface |
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{ |
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return $this->metadata; |
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} |
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public function getIdentifier(): ?IdentifierInterface |
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{ |
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if ($this->cachedIdentifier === false) { |
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$this->cachedIdentifier = $this->determineIdentifier(); |
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} |
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return $this->cachedIdentifier; |
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} |
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public function withMetadata(?MetadataInterface $metadata): RegistrationResult |
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{ |
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return new RegistrationResult($this->credentialId, $this->authenticatorData, $this->attestationObject, $this->verificationResult, $metadata); |
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} |
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private static function pkIdFromPemCertificate(string $pem): IdentifierInterface |
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{ |
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$cert = CertificateDetails::fromPem($pem); |
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return new AttestationKeyIdentifier($cert->getPublicKeyIdentifier()); |
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} |
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private function determineIdentifier(): ?IdentifierInterface |
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{ |
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// If a valid AAGUID is present, this is the main identifier. Do not look for others. |
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$identifier = $this->authenticatorData->getAaguid(); |
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if ($identifier !== null && !$identifier->isZeroAaguid()) { |
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return $identifier; |
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} |
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// Use public key identifier for U2F only. Apple for example generates a certificate |
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// for each credential using the credential's key so using the public key identifier |
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// would 'leak' a personal public key to the MDS. |
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if ($this->attestationObject->getFormat() === FidoU2fAttestationStatement::FORMAT_ID) { |
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// If certificates are available, get the attestation certificate's public key identifier |
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$trustPath = $this->verificationResult->getTrustPath(); |
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if ($trustPath instanceof CertificateTrustPath) { |
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$certs = $trustPath->getCertificates(); |
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if (isset($certs[0])) { |
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return self::pkIdFromPemCertificate($certs[0]->asPem()); |
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} |
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} |
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} |
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return null; |
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} |
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} |
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madwizard-org /
webauthn-server
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