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419
libraries/vendor/web-token/jwt-library/KeyManagement/KeyConverter/KeyConverter.php
vendored
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419
libraries/vendor/web-token/jwt-library/KeyManagement/KeyConverter/KeyConverter.php
vendored
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<?php
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declare(strict_types=1);
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namespace Jose\Component\KeyManagement\KeyConverter;
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use Brick\Math\BigInteger;
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use InvalidArgumentException;
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use Jose\Component\Core\Util\Base64UrlSafe;
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use OpenSSLCertificate;
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use ParagonIE\Sodium\Core\Ed25519;
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use RuntimeException;
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use SpomkyLabs\Pki\CryptoEncoding\PEM;
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use SpomkyLabs\Pki\CryptoTypes\AlgorithmIdentifier\AlgorithmIdentifier;
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use SpomkyLabs\Pki\CryptoTypes\Asymmetric\PrivateKey;
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use SpomkyLabs\Pki\CryptoTypes\Asymmetric\PublicKey;
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use SpomkyLabs\Pki\CryptoTypes\Asymmetric\RSA\RSASSAPSSPrivateKey;
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use Throwable;
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use function array_key_exists;
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use function assert;
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use function count;
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use function extension_loaded;
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use function in_array;
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use function is_array;
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use function is_string;
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use const E_ERROR;
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use const E_PARSE;
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use const OPENSSL_KEYTYPE_EC;
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use const OPENSSL_KEYTYPE_RSA;
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use const OPENSSL_RAW_DATA;
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use const PREG_PATTERN_ORDER;
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/**
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* @internal
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*/
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final class KeyConverter
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{
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public static function loadKeyFromCertificateFile(string $file): array
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{
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if (! file_exists($file)) {
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throw new InvalidArgumentException(sprintf('File "%s" does not exist.', $file));
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}
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$content = file_get_contents($file);
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if (! is_string($content)) {
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throw new InvalidArgumentException(sprintf('File "%s" cannot be read.', $file));
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}
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return self::loadKeyFromCertificate($content);
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}
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public static function loadKeyFromCertificate(string $certificate): array
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{
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if (! extension_loaded('openssl')) {
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throw new RuntimeException('Please install the OpenSSL extension');
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}
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$errorReporting = error_reporting(E_ERROR | E_PARSE);
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try {
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$res = openssl_x509_read($certificate);
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if ($res === false) {
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throw new InvalidArgumentException('Unable to load the certificate.');
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}
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} catch (Throwable) {
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$certificate = self::convertDerToPem($certificate);
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$res = openssl_x509_read($certificate);
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} finally {
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error_reporting($errorReporting);
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}
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if ($res === false) {
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throw new InvalidArgumentException('Unable to load the certificate.');
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}
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return self::loadKeyFromX509Resource($res);
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}
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public static function loadKeyFromX509Resource(OpenSSLCertificate $res): array
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{
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if (! extension_loaded('openssl')) {
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throw new RuntimeException('Please install the OpenSSL extension');
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}
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$key = openssl_pkey_get_public($res);
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if ($key === false) {
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throw new InvalidArgumentException('Unable to load the certificate.');
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}
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$details = openssl_pkey_get_details($key);
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if (! is_array($details)) {
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throw new InvalidArgumentException('Unable to load the certificate');
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}
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if (isset($details['key'])) {
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$values = self::loadKeyFromPEM($details['key']);
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openssl_x509_export($res, $out);
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$x5c = preg_replace('#-.*-#', '', (string) $out);
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$x5c = preg_replace('~\R~', '', (string) $x5c);
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if (! is_string($x5c)) {
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throw new InvalidArgumentException('Unable to load the certificate');
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}
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$x5c = trim($x5c);
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$x5tsha1 = openssl_x509_fingerprint($res, 'sha1', true);
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$x5tsha256 = openssl_x509_fingerprint($res, 'sha256', true);
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if (! is_string($x5tsha1) || ! is_string($x5tsha256)) {
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throw new InvalidArgumentException('Unable to compute the certificate fingerprint');
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}
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$values['x5c'] = [$x5c];
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$values['x5t'] = Base64UrlSafe::encodeUnpadded($x5tsha1);
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$values['x5t#256'] = Base64UrlSafe::encodeUnpadded($x5tsha256);
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return $values;
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}
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throw new InvalidArgumentException('Unable to load the certificate');
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}
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public static function loadFromKeyFile(string $file, ?string $password = null): array
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{
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$content = file_get_contents($file);
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if (! is_string($content)) {
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throw new InvalidArgumentException('Unable to load the key from the file.');
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}
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return self::loadFromKey($content, $password);
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}
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public static function loadFromKey(string $key, ?string $password = null): array
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{
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try {
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return self::loadKeyFromDER($key, $password);
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} catch (Throwable) {
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return self::loadKeyFromPEM($key, $password);
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}
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}
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/**
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* Be careful! The certificate chain is loaded, but it is NOT VERIFIED by any mean! It is mandatory to verify the
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* root CA or intermediate CA are trusted. If not done, it may lead to potential security issues.
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*/
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public static function loadFromX5C(array $x5c): array
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{
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if (! extension_loaded('openssl')) {
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throw new RuntimeException('Please install the OpenSSL extension');
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}
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if (count($x5c) === 0) {
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throw new InvalidArgumentException('The certificate chain is empty');
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}
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foreach ($x5c as $id => $cert) {
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$x5c[$id] = '-----BEGIN CERTIFICATE-----' . "\n" . chunk_split(
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(string) $cert,
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64,
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"\n"
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) . '-----END CERTIFICATE-----';
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$x509 = openssl_x509_read($x5c[$id]);
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if ($x509 === false) {
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throw new InvalidArgumentException('Unable to load the certificate chain');
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}
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$parsed = openssl_x509_parse($x509);
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if ($parsed === false) {
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throw new InvalidArgumentException('Unable to load the certificate chain');
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}
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}
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return self::loadKeyFromCertificate(reset($x5c));
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}
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private static function loadKeyFromDER(string $der, ?string $password = null): array
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{
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$pem = self::convertDerToPem($der);
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return self::loadKeyFromPEM($pem, $password);
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}
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private static function loadKeyFromPEM(string $pem, ?string $password = null): array
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{
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if (! extension_loaded('openssl')) {
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throw new RuntimeException('Please install the OpenSSL extension');
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}
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if (preg_match('#DEK-Info: (.+),(.+)#', $pem, $matches) === 1) {
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$pem = self::decodePem($pem, $matches, $password);
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}
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if (preg_match('#BEGIN ENCRYPTED PRIVATE KEY(.+)(.+)#', $pem) === 1) {
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$decrypted = openssl_pkey_get_private($pem, $password);
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if ($decrypted === false) {
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throw new InvalidArgumentException('Unable to decrypt the key.');
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}
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openssl_pkey_export($decrypted, $pem);
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}
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self::sanitizePEM($pem);
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$res = openssl_pkey_get_private($pem);
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if ($res === false) {
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$res = openssl_pkey_get_public($pem);
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}
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if ($res === false) {
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throw new InvalidArgumentException('Unable to load the key.');
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}
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$details = openssl_pkey_get_details($res);
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if (! is_array($details) || ! array_key_exists('type', $details)) {
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throw new InvalidArgumentException('Unable to get details of the key');
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}
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return match ($details['type']) {
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OPENSSL_KEYTYPE_EC => self::tryToLoadECKey($pem),
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OPENSSL_KEYTYPE_RSA => RSAKey::createFromPEM($pem)->toArray(),
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-1 => self::tryToLoadOtherKeyTypes($pem),
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default => throw new InvalidArgumentException('Unsupported key type'),
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};
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}
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/**
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* This method tries to load Ed448, X488, Ed25519 and X25519 keys.
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*/
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private static function tryToLoadECKey(string $input): array
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{
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try {
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return ECKey::createFromPEM($input)->toArray();
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} catch (Throwable) {
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}
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try {
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return self::tryToLoadOtherKeyTypes($input);
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} catch (Throwable) {
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}
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throw new InvalidArgumentException('Unable to load the key.');
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}
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/**
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* This method tries to load Ed448, X488, Ed25519 and X25519 keys.
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*/
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private static function tryToLoadOtherKeyTypes(string $input): array
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{
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$pem = PEM::fromString($input);
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return match ($pem->type()) {
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PEM::TYPE_PUBLIC_KEY => self::loadPublicKey($pem),
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PEM::TYPE_PRIVATE_KEY => self::loadPrivateKey($pem),
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default => throw new InvalidArgumentException('Unsupported key type'),
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};
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}
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/**
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* @return array<string, mixed>
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*/
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private static function loadPrivateKey(PEM $pem): array
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{
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try {
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$key = PrivateKey::fromPEM($pem);
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switch ($key->algorithmIdentifier()->oid()) {
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case AlgorithmIdentifier::OID_RSASSA_PSS_ENCRYPTION:
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assert($key instanceof RSASSAPSSPrivateKey);
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return [
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'kty' => 'RSA',
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'n' => self::convertDecimalToBas64Url($key->modulus()),
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'e' => self::convertDecimalToBas64Url($key->publicExponent()),
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'd' => self::convertDecimalToBas64Url($key->privateExponent()),
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'dp' => self::convertDecimalToBas64Url($key->exponent1()),
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'dq' => self::convertDecimalToBas64Url($key->exponent2()),
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'p' => self::convertDecimalToBas64Url($key->prime1()),
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'q' => self::convertDecimalToBas64Url($key->prime2()),
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'qi' => self::convertDecimalToBas64Url($key->coefficient()),
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];
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case AlgorithmIdentifier::OID_ED25519:
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case AlgorithmIdentifier::OID_ED448:
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case AlgorithmIdentifier::OID_X25519:
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case AlgorithmIdentifier::OID_X448:
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$curve = self::getCurve($key->algorithmIdentifier()->oid());
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$values = [
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'kty' => 'OKP',
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'crv' => $curve,
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'd' => Base64UrlSafe::encodeUnpadded($key->privateKeyData()),
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];
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return self::populatePoints($key, $values);
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default:
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throw new InvalidArgumentException('Unsupported key type');
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}
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} catch (Throwable $e) {
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throw new InvalidArgumentException('Unable to load the key.', 0, $e);
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}
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}
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/**
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* @return array<string, mixed>
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*/
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private static function loadPublicKey(PEM $pem): array
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{
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$key = PublicKey::fromPEM($pem);
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switch ($key->algorithmIdentifier()->oid()) {
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case AlgorithmIdentifier::OID_ED25519:
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case AlgorithmIdentifier::OID_ED448:
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case AlgorithmIdentifier::OID_X25519:
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case AlgorithmIdentifier::OID_X448:
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$curve = self::getCurve($key->algorithmIdentifier()->oid());
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self::checkType($curve);
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return [
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'kty' => 'OKP',
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'crv' => $curve,
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'x' => Base64UrlSafe::encodeUnpadded((string) $key->subjectPublicKey()),
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];
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default:
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throw new InvalidArgumentException('Unsupported key type');
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}
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}
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private static function convertDecimalToBas64Url(string $decimal): string
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{
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return Base64UrlSafe::encodeUnpadded(BigInteger::fromBase($decimal, 10)->toBytes());
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}
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/**
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* @param array<string, mixed> $values
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* @return array<string, mixed>
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*/
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private static function populatePoints(PrivateKey $key, array $values): array
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{
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$crv = $values['crv'] ?? null;
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assert(is_string($crv), 'Unsupported key type.');
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$x = self::getPublicKey($key, $crv);
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if ($x !== null) {
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$values['x'] = Base64UrlSafe::encodeUnpadded($x);
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}
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return $values;
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}
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private static function getPublicKey(PrivateKey $key, string $crv): ?string
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{
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switch ($crv) {
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case 'Ed25519':
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return Ed25519::publickey_from_secretkey($key->privateKeyData());
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case 'X25519':
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if (extension_loaded('sodium')) {
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return sodium_crypto_scalarmult_base($key->privateKeyData());
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}
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// no break
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default:
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return null;
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}
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}
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private static function checkType(string $curve): void
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{
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$curves = ['Ed448ph', 'Ed25519ph', 'Ed448', 'Ed25519', 'X448', 'X25519'];
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in_array($curve, $curves, true) || throw new InvalidArgumentException('Unsupported key type.');
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}
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/**
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* This method modifies the PEM to get 64 char lines and fix bug with old OpenSSL versions.
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*/
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private static function getCurve(string $oid): string
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{
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return match ($oid) {
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'1.3.101.115' => 'Ed448ph',
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'1.3.101.114' => 'Ed25519ph',
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'1.3.101.113' => 'Ed448',
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'1.3.101.112' => 'Ed25519',
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'1.3.101.111' => 'X448',
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'1.3.101.110' => 'X25519',
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default => throw new InvalidArgumentException('Unsupported key type.'),
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};
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}
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/**
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* This method modifies the PEM to get 64 char lines and fix bug with old OpenSSL versions.
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*/
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private static function sanitizePEM(string &$pem): void
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{
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$number = preg_match_all('#(-.*-)#', $pem, $matches, PREG_PATTERN_ORDER);
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if ($number !== 2) {
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throw new InvalidArgumentException('Unable to load the key');
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}
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$ciphertext = preg_replace('#-.*-|\r|\n| #', '', $pem);
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$pem = $matches[0][0] . "\n";
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$pem .= chunk_split($ciphertext ?? '', 64, "\n");
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$pem .= $matches[0][1] . "\n";
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}
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/**
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* @param string[] $matches
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*/
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private static function decodePem(string $pem, array $matches, ?string $password = null): string
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{
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if ($password === null) {
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throw new InvalidArgumentException('Password required for encrypted keys.');
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}
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$iv = pack('H*', trim($matches[2]));
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$iv_sub = mb_substr($iv, 0, 8, '8bit');
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$symkey = pack('H*', md5($password . $iv_sub));
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$symkey .= pack('H*', md5($symkey . $password . $iv_sub));
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$key = preg_replace('#^(?:Proc-Type|DEK-Info): .*#m', '', $pem);
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$ciphertext = base64_decode(preg_replace('#-.*-|\r|\n#', '', $key ?? '') ?? '', true);
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if (! is_string($ciphertext)) {
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throw new InvalidArgumentException('Unable to encode the data.');
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}
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$decoded = openssl_decrypt($ciphertext, mb_strtolower($matches[1]), $symkey, OPENSSL_RAW_DATA, $iv);
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if ($decoded === false) {
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throw new RuntimeException('Unable to decrypt the key');
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}
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$number = preg_match_all('#-{5}.*-{5}#', $pem, $result);
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if ($number !== 2) {
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throw new InvalidArgumentException('Unable to load the key');
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}
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$pem = $result[0][0] . "\n";
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$pem .= chunk_split(base64_encode($decoded), 64);
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return $pem . ($result[0][1] . "\n");
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}
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private static function convertDerToPem(string $der_data): string
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{
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$pem = chunk_split(base64_encode($der_data), 64, "\n");
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return '-----BEGIN CERTIFICATE-----' . "\n" . $pem . '-----END CERTIFICATE-----' . "\n";
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}
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}
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