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<?php |
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declare(strict_types=1); |
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/* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2014-2017 Spomky-Labs |
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* |
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* This software may be modified and distributed under the terms |
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* of the MIT license. See the LICENSE file for details. |
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*/ |
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namespace Jose\Component\KeyManagement; |
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use Base64Url\Base64Url; |
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use Jose\Component\Core\JWK; |
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use Jose\Component\Core\JWKSet; |
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use Jose\Component\KeyManagement\KeyConverter\ECKey; |
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use Jose\Component\KeyManagement\KeyConverter\KeyConverter; |
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use Jose\Component\KeyManagement\KeyConverter\RSAKey; |
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/** |
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* Class JWKFactory. |
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*/ |
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final class JWKFactory |
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{ |
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/** |
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* @param int $size The key size in bits |
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* @param array $values values to configure the key |
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* |
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* @return JWK |
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*/ |
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public static function createRSAKey(int $size, array $values = []): JWK |
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{ |
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if (0 !== $size % 8) { |
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throw new \InvalidArgumentException('Invalid key size.'); |
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} |
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if (384 > $size) { |
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throw new \InvalidArgumentException('Key length is too short. It needs to be at least 384 bits.'); |
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} |
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$key = openssl_pkey_new([ |
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'private_key_bits' => $size, |
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'private_key_type' => OPENSSL_KEYTYPE_RSA, |
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]); |
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openssl_pkey_export($key, $out); |
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$rsa = RSAKey::createFromPEM($out); |
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$values = array_merge( |
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$values, |
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$rsa->toArray() |
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); |
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return JWK::create($values); |
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} |
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/** |
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* @param string $curve The curve |
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* @param array $values values to configure the key |
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* |
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* @return JWK |
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*/ |
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public static function createECKey(string $curve, array $values = []): JWK |
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{ |
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$args = [ |
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'curve_name' => self::getOpensslName($curve), |
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'private_key_type' => OPENSSL_KEYTYPE_EC, |
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]; |
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$key = openssl_pkey_new($args); |
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$res = openssl_pkey_export($key, $out); |
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if (false === $res) { |
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throw new \InvalidArgumentException('Unable to create the key'); |
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} |
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$ec = ECKey::createFromPEM($out); |
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$values = array_merge( |
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$values, |
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$ec->toArray() |
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); |
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return JWK::create($values); |
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} |
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/** |
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* @param int $size The key size in bits |
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* @param array $values values to configure the key |
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* |
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* @return JWK |
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*/ |
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public static function createOctKey(int $size, array $values = []): JWK |
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{ |
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if (0 !== $size % 8) { |
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throw new \InvalidArgumentException('Invalid key size.'); |
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} |
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$values = array_merge( |
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$values, |
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[ |
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'kty' => 'oct', |
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'k' => Base64Url::encode(random_bytes($size / 8)), |
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] |
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); |
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return JWK::create($values); |
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} |
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/** |
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* @param string $curve The curve |
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* @param array $values values to configure the key |
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* |
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* @return JWK |
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*/ |
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public static function createOKPKey(string $curve, array $values = []): JWK |
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{ |
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switch ($curve) { |
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case 'X25519': |
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$d = sodium_randombytes_buf(\Sodium\CRYPTO_BOX_SEEDBYTES); |
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$x = sodium_crypto_scalarmult_base($d); |
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break; |
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case 'Ed25519': |
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$d = sodium_randombytes_buf(\Sodium\CRYPTO_SIGN_SEEDBYTES); |
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$keyPair = sodium_crypto_sign_seed_keypair($d); |
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$x = sodium_crypto_sign_publickey($keyPair); |
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break; |
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default: |
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throw new \InvalidArgumentException(sprintf('Unsupported "%s" curve', $curve)); |
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} |
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$values = array_merge( |
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$values, |
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[ |
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'kty' => 'OKP', |
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'crv' => $curve, |
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'x' => Base64Url::encode($x), |
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'd' => Base64Url::encode($d), |
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] |
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); |
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return JWK::create($values); |
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} |
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/** |
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* @param array $values values to configure the key |
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* |
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* @return JWK |
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*/ |
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public static function createNoneKey(array $values = []): JWK |
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{ |
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$values = array_merge( |
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$values, |
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[ |
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'kty' => 'none', |
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'alg' => 'none', |
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'use' => 'sig', |
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] |
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); |
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return JWK::create($values); |
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} |
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/** |
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* @param string $curve |
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* |
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* @throws \InvalidArgumentException |
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* |
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* @return string |
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*/ |
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private static function getOpensslName(string $curve): string |
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{ |
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switch ($curve) { |
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case 'P-256': |
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return 'prime256v1'; |
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case 'P-384': |
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return 'secp384r1'; |
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case 'P-521': |
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return 'secp521r1'; |
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default: |
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throw new \InvalidArgumentException(sprintf('The curve "%s" is not supported.', $curve)); |
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} |
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} |
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/** |
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* @param string $value |
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* |
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* @return JWK|JWKSet |
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*/ |
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public static function createFromString(string $value) |
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{ |
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$json = json_decode($value, true); |
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if(!is_array($json)) { |
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throw new \InvalidArgumentException('Invalid key or key set.'); |
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} |
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return self::createFromValues($json); |
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} |
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/** |
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* @param array $values |
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* |
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* @return JWK|JWKSet |
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*/ |
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public static function createFromValues(array $values) |
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{ |
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if (array_key_exists('keys', $values) && is_array($values['keys'])) { |
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return JWKSet::createFromKeyData($values); |
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} |
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return JWK::create($values); |
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} |
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/** |
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* @param string $file |
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* @param array $additional_values |
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* |
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* @return JWK |
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*/ |
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public static function createFromCertificateFile(string $file, array $additional_values = []): JWK |
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{ |
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$values = KeyConverter::loadKeyFromCertificateFile($file); |
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$values = array_merge($values, $additional_values); |
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return JWK::create($values); |
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} |
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/** |
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* @param string $file |
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* @param null|string $secret |
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* @param array $additional_values |
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* |
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* @return JWK |
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*/ |
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public static function createFromPKCS12CertificateFile(string $file, ?string $secret = null, array $additional_values = []): JWK |
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{ |
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$res = openssl_pkcs12_read(file_get_contents($file), $certs, $secret); |
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if (false === $res || !is_array($certs) || !array_key_exists('pkey', $certs)) { |
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throw new \RuntimeException('Unable to load the certificates.'); |
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} |
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return self::createFromKey($certs['pkey'], null, $additional_values); |
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} |
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/** |
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* @param string $certificate |
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* @param array $additional_values |
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* |
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* @return JWK |
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*/ |
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public static function createFromCertificate(string $certificate, array $additional_values = []): JWK |
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{ |
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$values = KeyConverter::loadKeyFromCertificate($certificate); |
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$values = array_merge($values, $additional_values); |
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return JWK::create($values); |
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} |
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/** |
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* @param resource $res |
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* @param array $additional_values |
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* |
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* @return JWK |
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*/ |
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public static function createFromX509Resource($res, array $additional_values = []): JWK |
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{ |
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$values = KeyConverter::loadKeyFromX509Resource($res); |
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$values = array_merge($values, $additional_values); |
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return JWK::create($values); |
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} |
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/** |
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* @param string $file |
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* @param null|string $password |
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* @param array $additional_values |
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* |
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* @return JWK |
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*/ |
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public static function createFromKeyFile(string $file, ?string $password = null, array $additional_values = []): JWK |
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{ |
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$values = KeyConverter::loadFromKeyFile($file, $password); |
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$values = array_merge($values, $additional_values); |
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return JWK::create($values); |
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} |
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/** |
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* @param string $key |
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* @param null|string $password |
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* @param array $additional_values |
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* |
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* @return JWK |
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*/ |
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public static function createFromKey(string $key, ?string $password = null, array $additional_values = []): JWK |
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{ |
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$values = KeyConverter::loadFromKey($key, $password); |
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$values = array_merge($values, $additional_values); |
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return JWK::create($values); |
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} |
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/** |
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* @param array $x5c |
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* @param array $additional_values |
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* |
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* @return JWK |
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*/ |
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public static function createFromX5C(array $x5c, array $additional_values = []): JWK |
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{ |
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$values = KeyConverter::loadFromX5C($x5c); |
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$values = array_merge($values, $additional_values); |
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return JWK::create($values); |
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} |
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} |
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