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<?php |
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namespace MadWizard\WebAuthn\Attestation\Statement; |
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use MadWizard\WebAuthn\Attestation\AttestationObject; |
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use MadWizard\WebAuthn\Attestation\Tpm\TpmAttest; |
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use MadWizard\WebAuthn\Attestation\Tpm\TpmPublic; |
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use MadWizard\WebAuthn\Exception\DataValidationException; |
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use MadWizard\WebAuthn\Exception\ParseException; |
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use MadWizard\WebAuthn\Format\ByteBuffer; |
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use MadWizard\WebAuthn\Format\DataValidator; |
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use MadWizard\WebAuthn\Pki\X509Certificate; |
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class TpmAttestationStatement extends AbstractAttestationStatement |
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{ |
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public const FORMAT_ID = 'tpm'; |
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/** |
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* @var ByteBuffer |
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*/ |
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private $signature; |
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/** |
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* @var int |
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*/ |
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private $algorithm; |
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/** |
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* @var X509Certificate[]|null |
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*/ |
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private $certificates; |
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/** |
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* @var ByteBuffer|null |
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*/ |
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private $ecdaaKeyId; |
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/** |
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* @var ByteBuffer |
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*/ |
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private $certInfo; |
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/** |
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* @var TpmAttest |
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*/ |
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private $attest; |
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/** |
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* @var TpmPublic |
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*/ |
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private $public; |
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public function __construct(AttestationObject $attestationObject) |
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{ |
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parent::__construct($attestationObject, self::FORMAT_ID); |
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$statement = $attestationObject->getStatement(); |
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try { |
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DataValidator::checkMap( |
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$statement, |
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[ |
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'ver' => 'string', |
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'alg' => 'integer', |
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'ecdaaKeyId' => '?' . ByteBuffer::class, |
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'x5c' => '?array', |
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'sig' => ByteBuffer::class, |
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'certInfo' => ByteBuffer::class, |
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'pubArea' => ByteBuffer::class, |
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] |
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); |
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} catch (DataValidationException $e) { |
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throw new ParseException('Invalid TPM attestation statement.', 0, $e); |
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} |
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$this->algorithm = $statement->get('alg'); |
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$this->signature = $statement->get('sig'); |
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if ($statement->get('ver') !== '2.0') { |
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throw new ParseException('Only TPM version 2.0 is supported.'); |
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} |
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$this->ecdaaKeyId = $statement->getDefault('ecdaaKeyId', null); |
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$x5c = $statement->getDefault('x5c', null); |
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if ($this->ecdaaKeyId === null && $x5c === null) { |
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throw new ParseException('Either ecdaaKeyId or x5c must be set.'); |
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} |
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if ($this->ecdaaKeyId !== null && $x5c !== null) { |
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throw new ParseException('ecdaaKeyId and x5c cannot both be set.'); |
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} |
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$this->certificates = $x5c === null ? null : $this->buildPEMCertificateArray($x5c); |
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$this->attest = new TpmAttest($statement->get('certInfo')); |
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$this->public = new TpmPublic($statement->get('pubArea')); |
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$this->certInfo = $statement->get('certInfo'); |
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} |
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public function getSignature(): ByteBuffer |
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{ |
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return $this->signature; |
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} |
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public function getAlgorithm(): int |
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{ |
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return $this->algorithm; |
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} |
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/** |
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* @return X509Certificate[]|null |
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*/ |
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public function getCertificates(): ?array |
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{ |
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return $this->certificates; |
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} |
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public function getEcdaaKeyId(): ?ByteBuffer |
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{ |
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return $this->ecdaaKeyId; |
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} |
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public function getRawCertInfo(): ByteBuffer |
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{ |
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return $this->certInfo; |
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} |
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public function getCertInfo(): TpmAttest |
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{ |
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return $this->attest; |
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} |
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public function getPubArea(): TpmPublic |
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{ |
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return $this->public; |
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} |
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} |
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madwizard-org /
webauthn-server
