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<?php |
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declare(strict_types=1); |
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namespace SimpleSAML\XMLSecurity\Key; |
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use OpenSSLCertificate; |
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use SimpleSAML\Assert\Assert; |
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use SimpleSAML\XMLSecurity\Constants as C; |
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use SimpleSAML\XMLSecurity\CryptoEncoding\PEM; |
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use SimpleSAML\XMLSecurity\Exception\RuntimeException; |
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use SimpleSAML\XMLSecurity\Exception\UnsupportedAlgorithmException; |
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use function openssl_error_string; |
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use function openssl_pkey_get_details; |
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use function openssl_pkey_get_public; |
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use function openssl_x509_fingerprint; |
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use function openssl_x509_parse; |
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/** |
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* A class modeling X509 certificates. |
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* |
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* @package simplesamlphp/xml-security |
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*/ |
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class X509Certificate |
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{ |
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/** @var \SimpleSAML\XMLSecurity\CryptoEncoding\PEM */ |
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protected PEM $material; |
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/** @var \SimpleSAML\XMLSecurity\Key\PublicKey */ |
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protected PublicKey $publicKey; |
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/** @var array */ |
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protected array $thumbprint = []; |
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/** @var array */ |
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protected array $parsed = []; |
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/** |
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* Create a new X509 certificate from its PEM-encoded representation. |
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* |
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* @param \SimpleSAML\XMLSecurity\CryptoEncoding\PEM $cert The PEM-encoded certificate or the path to a file containing it. |
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* |
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* @throws \SimpleSAML\XMLSecurity\Exception\RuntimeException If the certificate cannot be exported to PEM format. |
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*/ |
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final public function __construct(PEM $cert) |
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{ |
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Assert::oneOf($cert->type(), [PEM::TYPE_CERTIFICATE], "PEM structure has the wrong type %s."); |
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$this->material = $cert; |
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if (($key = openssl_pkey_get_public($cert->string())) === false) { |
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throw new RuntimeException('Failed to read key: ' . openssl_error_string()); |
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} |
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// Some OpenSSL functions will add errors to the list even if they succeed |
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while (openssl_error_string() !== false); |
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if (($details = openssl_pkey_get_details($key)) === false) { |
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throw new RuntimeException('Failed to export key: ' . openssl_error_string()); |
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} |
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// Some OpenSSL functions will add errors to the list even if they succeed |
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while (openssl_error_string() !== false); |
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$this->publicKey = new PublicKey(PEM::fromString($details['key'])); |
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$this->thumbprint[C::DIGEST_SHA1] = $this->getRawThumbprint(); |
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$this->parsed = openssl_x509_parse($cert->string()); |
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} |
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/** |
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* Return the public key associated with this certificate. |
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* |
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* @return \SimpleSAML\XMLSecurity\Key\PublicKey The public key. |
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*/ |
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public function getPublicKey(): PublicKey |
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{ |
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return $this->publicKey; |
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} |
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/** |
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* Return the key material associated with this key. |
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* |
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* @return string The key material. |
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*/ |
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public function getMaterial(): string |
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{ |
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return $this->material->string(); |
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} |
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/** |
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* Return the raw PEM-object associated with this key. |
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* |
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* @return \SimpleSAML\XMLSecurity\CryptoEncoding\PEM The raw material. |
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*/ |
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public function getPEM(): PEM |
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{ |
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return $this->material; |
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} |
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/** |
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* Get the raw thumbprint of a certificate |
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* |
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* @param string $alg The digest algorithm to use. Defaults to SHA1. |
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* |
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* @return string The thumbprint associated with the given certificate. |
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*/ |
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public function getRawThumbprint(string $alg = C::DIGEST_SHA1): string |
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{ |
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if (isset($this->thumbprint[$alg])) { |
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return $this->thumbprint[$alg]; |
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} |
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Assert::keyExists( |
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C::$DIGEST_ALGORITHMS, |
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$alg, |
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'Invalid digest algorithm identifier', |
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UnsupportedAlgorithmException::class, |
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); |
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return $this->thumbprint[$alg] = openssl_x509_fingerprint( |
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$this->material->string(), |
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C::$DIGEST_ALGORITHMS[$alg], |
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); |
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} |
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/** |
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* Get the details of this certificate. |
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* |
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* @return array An array with all the details of the certificate. |
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* |
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* @see openssl_x509_parse() |
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*/ |
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public function getCertificateDetails(): array |
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{ |
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return $this->parsed; |
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} |
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/** |
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* Get a new X509 certificate from a file. |
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* |
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* @param string $file The file where the PEM-encoded certificate is stored. |
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* |
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* @return static A new X509Certificate key. |
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*/ |
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public static function fromFile(string $file): static |
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{ |
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return new static(PEM::fromFile($file)); |
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} |
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} |
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simplesamlphp /
xml-security
