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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\Framework\Jwt;
/**
* Initiates JWKs for various encryption types.
*/
class JwkFactory
{
private const EC_CURVE_MAP = [
'1.2.840.10045.3.1.7' => ['name' => 'P-256', 'bits' => 256],
'1.3.132.0.34' => ['name' => 'P-384', 'bits' => 384],
'1.3.132.0.35' => ['name' => 'P-521', 'bits' => 512]
];
/**
* Create JWK object from key data.
*
* @param array $data
* @return Jwk
*/
public function createFromData(array $data): Jwk
{
if (!array_key_exists('kty', $data)) {
throw new \InvalidArgumentException('Missing key type in JWK data (kty)');
}
$kty = $data['kty'];
unset($data['kty']);
$use = array_key_exists('use', $data) ? $data['use'] : null;
unset($data['use']);
$keyOps = array_key_exists('key_ops', $data) ? $data['key_ops'] : null;
unset($data['key_ops']);
$alg = array_key_exists('alg', $data) ? $data['alg'] : null;
unset($data['alg']);
$x5u = array_key_exists('x5u', $data) ? $data['x5u'] : null;
unset($data['use']);
$x5c = array_key_exists('x5c', $data) ? $data['x5c'] : null;
unset($data['x5c']);
$x5t = array_key_exists('x5t', $data) ? $data['x5t'] : null;
unset($data['x5t']);
$x5tS256 = array_key_exists('x5t#S256', $data) ? $data['x5t#S256'] : null;
unset($data['x5t#S256']);
$kid = array_key_exists('kid', $data) ? $data['kid'] : null;
unset($data['kid']);
return new Jwk(
$kty,
$data,
$use,
$keyOps,
$alg,
$x5u,
$x5c,
$x5t,
$x5tS256,
$kid
);
}
/**
* Create JWK for signatures generated with HMAC and SHA256
*
* @param string $key
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createHs256(string $key, ?string $kid = null): Jwk
{
return $this->createOct($key, Jwk::PUBLIC_KEY_USE_SIGNATURE, Jwk::ALGORITHM_HS256, $kid);
}
/**
* Create JWK for signatures generated with HMAC and SHA384
*
* @param string $key
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createHs384(string $key, ?string $kid = null): Jwk
{
return $this->createOct($key, Jwk::PUBLIC_KEY_USE_SIGNATURE, Jwk::ALGORITHM_HS384, $kid);
}
/**
* Create JWK for signatures generated with HMAC and SHA512
*
* @param string $key
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createHs512(string $key, ?string $kid = null): Jwk
{
return $this->createOct($key, Jwk::PUBLIC_KEY_USE_SIGNATURE, Jwk::ALGORITHM_HS512, $kid);
}
/**
* Create JWK to sign JWS with RSASSA-PKCS1-v1_5 using SHA-256.
*
* @param string $privateKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createSignRs256(string $privateKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateRsa(
$privateKey,
$passPhrase,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
Jwk::ALGORITHM_RS256,
$kid
);
}
/**
* Create JWK to verify JWS signed with RSASSA-PKCS1-v1_5 using SHA-256.
*
* @param string $publicKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createVerifyRs256(string $publicKey, ?string $kid = null): Jwk
{
return $this->createPublicRsa($publicKey, Jwk::PUBLIC_KEY_USE_SIGNATURE, Jwk::ALGORITHM_RS256, $kid);
}
/**
* Create JWK to sign JWS with RSASSA-PKCS1-v1_5 using SHA-384.
*
* @param string $privateKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createSignRs384(string $privateKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateRsa(
$privateKey,
$passPhrase,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
Jwk::ALGORITHM_RS384,
$kid
);
}
/**
* Create JWK to verify JWS signed with RSASSA-PKCS1-v1_5 using SHA-384.
*
* @param string $publicKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createVerifyRs384(string $publicKey, ?string $kid = null): Jwk
{
return $this->createPublicRsa($publicKey, Jwk::PUBLIC_KEY_USE_SIGNATURE, Jwk::ALGORITHM_RS384, $kid);
}
/**
* Create JWK to sign JWS with RSASSA-PKCS1-v1_5 using SHA-512.
*
* @param string $privateKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createSignRs512(string $privateKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateRsa(
$privateKey,
$passPhrase,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
Jwk::ALGORITHM_RS512,
$kid
);
}
/**
* Create JWK to verify JWS signed with RSASSA-PKCS1-v1_5 using SHA-512.
*
* @param string $publicKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createVerifyRs512(string $publicKey, ?string $kid = null): Jwk
{
return $this->createPublicRsa($publicKey, Jwk::PUBLIC_KEY_USE_SIGNATURE, Jwk::ALGORITHM_RS512, $kid);
}
/**
* Create JWK to sign JWS with ECDSA using P-256 and SHA-256.
*
* @param string $privateKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createSignEs256(string $privateKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateEc(
$privateKey,
$passPhrase,
256,
Jwk::ALGORITHM_ES256,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
$kid
);
}
/**
* Create JWK to verify JWS signed with ECDSA using P-256 and SHA-256.
*
* @param string $publicKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createVerifyEs256(string $publicKey, ?string $kid = null): Jwk
{
return $this->createPublicEc(
$publicKey,
256,
Jwk::ALGORITHM_ES256,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
$kid
);
}
/**
* Create JWK to sign JWS with ECDSA using P-384 and SHA-384 .
*
* @param string $privateKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createSignEs384(string $privateKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateEc(
$privateKey,
$passPhrase,
384,
Jwk::ALGORITHM_ES384,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
$kid
);
}
/**
* Create JWK to verify JWS signed with ECDSA using P-384 and SHA-384 .
*
* @param string $publicKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createVerifyEs384(string $publicKey, ?string $kid = null): Jwk
{
return $this->createPublicEc(
$publicKey,
384,
Jwk::ALGORITHM_ES384,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
$kid
);
}
/**
* Create JWK to sign JWS with ECDSA using P-521 and SHA-512.
*
* @param string $privateKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createSignEs512(string $privateKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateEc(
$privateKey,
$passPhrase,
512,
Jwk::ALGORITHM_ES512,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
$kid
);
}
/**
* Create JWK to verify JWS signed with ECDSA using P-521 and SHA-512.
*
* @param string $publicKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createVerifyEs512(string $publicKey, ?string $kid = null): Jwk
{
return $this->createPublicEc(
$publicKey,
512,
Jwk::ALGORITHM_ES512,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
$kid
);
}
/**
* Create JWK to sign JWS with RSASSA-PSS using SHA-256 and MGF1 with SHA-256.
*
* @param string $privateKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createSignPs256(string $privateKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateRsa(
$privateKey,
$passPhrase,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
Jwk::ALGORITHM_PS256,
$kid
);
}
/**
* Create JWK to verify JWS signed with RSASSA-PSS using SHA-256 and MGF1 with SHA-256.
*
* @param string $publicKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createVerifyPs256(string $publicKey, ?string $kid = null): Jwk
{
return $this->createPublicRsa($publicKey, Jwk::PUBLIC_KEY_USE_SIGNATURE, Jwk::ALGORITHM_PS256, $kid);
}
/**
* Create JWK to sign JWS with RSASSA-PSS using SHA-384 and MGF1 with SHA-384.
*
* @param string $privateKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createSignPs384(string $privateKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateRsa(
$privateKey,
$passPhrase,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
Jwk::ALGORITHM_PS384,
$kid
);
}
/**
* Create JWK to verify JWS signed with RSASSA-PSS using SHA-384 and MGF1 with SHA-384.
*
* @param string $publicKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createVerifyPs384(string $publicKey, ?string $kid = null): Jwk
{
return $this->createPublicRsa($publicKey, Jwk::PUBLIC_KEY_USE_SIGNATURE, Jwk::ALGORITHM_PS384, $kid);
}
/**
* Create JWK to sign JWS with RSASSA-PSS using SHA-512 and MGF1 with SHA-512.
*
* @param string $privateKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createSignPs512(string $privateKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateRsa(
$privateKey,
$passPhrase,
Jwk::PUBLIC_KEY_USE_SIGNATURE,
Jwk::ALGORITHM_PS512,
$kid
);
}
/**
* Create JWK to verify JWS signed with RSASSA-PSS using SHA-512 and MGF1 with SHA-512.
*
* @param string $publicKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createVerifyPs512(string $publicKey, ?string $kid = null): Jwk
{
return $this->createPublicRsa($publicKey, Jwk::PUBLIC_KEY_USE_SIGNATURE, Jwk::ALGORITHM_PS512, $kid);
}
/**
* Create key to use with A128KW algorithm to encrypt JWE.
*
* @param string $key
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createA128KW(string $key, ?string $kid = null): Jwk
{
return $this->createOct($key, Jwk::PUBLIC_KEY_USE_ENCRYPTION, Jwk::ALGORITHM_A128KW, $kid);
}
/**
* Create key to use with A192KW algorithm to encrypt JWE.
*
* @param string $key
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createA192KW(string $key, ?string $kid = null): Jwk
{
return $this->createOct($key, Jwk::PUBLIC_KEY_USE_ENCRYPTION, Jwk::ALGORITHM_A192KW, $kid);
}
/**
* Create key to use with A256KW algorithm to encrypt JWE.
*
* @param string $key
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createA256KW(string $key, ?string $kid = null): Jwk
{
return $this->createOct($key, Jwk::PUBLIC_KEY_USE_ENCRYPTION, Jwk::ALGORITHM_A256KW, $kid);
}
/**
* Create RSA key to use with RSA-OAEP algorithm to encrypt JWE.
*
* @param string $publicKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createEncryptRsaOaep(string $publicKey, ?string $kid = null): Jwk
{
return $this->createPublicRsa($publicKey, Jwk::PUBLIC_KEY_USE_ENCRYPTION, Jwk::ALGORITHM_RSA_OAEP, $kid);
}
/**
* Create RSA key to use with RSA-OAEP algorithm to decrypt JWE.
*
* @param string $privateKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createDecryptRsaOaep(string $privateKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateRsa(
$privateKey,
$passPhrase,
Jwk::PUBLIC_KEY_USE_ENCRYPTION,
Jwk::ALGORITHM_RSA_OAEP,
$kid
);
}
/**
* Create RSA key to use with RSA-OAEP-256 algorithm to encrypt JWE.
*
* @param string $publicKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createEncryptRsaOaep256(string $publicKey, ?string $kid = null): Jwk
{
return $this->createPublicRsa($publicKey, Jwk::PUBLIC_KEY_USE_ENCRYPTION, Jwk::ALGORITHM_RSA_OAEP_256, $kid);
}
/**
* Create RSA key to use with RSA-OAEP-256 algorithm to decrypt JWE.
*
* @param string $privateKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createDecryptRsaOaep256(string $privateKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateRsa(
$privateKey,
$passPhrase,
Jwk::PUBLIC_KEY_USE_ENCRYPTION,
Jwk::ALGORITHM_RSA_OAEP_256,
$kid
);
}
/**
* Create JWK to use with "dir" algorithm for JWEs.
*
* @param string $key
* @param string $contentEncryptionAlgorithm
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createDir(string $key, string $contentEncryptionAlgorithm, ?string $kid = null): Jwk
{
if (strlen($key) < 2048) {
throw new \InvalidArgumentException('Shared secret key must be at least 2048 bits.');
}
return new Jwk(
Jwk::KEY_TYPE_OCTET,
['k' => self::base64Encode($key)],
Jwk::PUBLIC_KEY_USE_ENCRYPTION,
null,
Jwk::ALGORITHM_DIR,
null,
null,
null,
null,
$kid,
$contentEncryptionAlgorithm
);
}
/**
* Create JWK to use ECDH-ES algorithm with EC key to encrypt JWE.
*
* @param string $publicEcKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createEncryptEcdhEsWithEc(string $publicEcKey, ?string $kid = null): Jwk
{
return $this->createPublicEc(
$publicEcKey,
null,
Jwk::ALGORITHM_ECDH_ES,
Jwk::PUBLIC_KEY_USE_ENCRYPTION,
$kid
);
}
/**
* Create JWK to use ECDH-ES algorithm with EC key to decrypt JWE.
*
* @param string $privateEcKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createDecryptEcdhEsWithEc(string $privateEcKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateEc(
$privateEcKey,
$passPhrase,
null,
Jwk::ALGORITHM_ECDH_ES,
Jwk::PUBLIC_KEY_USE_ENCRYPTION,
$kid
);
}
/**
* Create JWK to use ECDH-ES+A128KW algorithm with EC key to encrypt JWE.
*
* @param string $publicEcKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createEncryptEcdhEsA128kwWithEc(string $publicEcKey, ?string $kid = null): Jwk
{
return $this->createPublicEc(
$publicEcKey,
null,
Jwk::ALGORITHM_ECDH_ES_A128KW,
Jwk::PUBLIC_KEY_USE_ENCRYPTION,
$kid
);
}
/**
* Create JWK to use ECDH-ES+A128KW algorithm with EC key to decrypt JWE.
*
* @param string $privateEcKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createDecryptEcdhEsA128kwWithEc(string $privateEcKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateEc(
$privateEcKey,
$passPhrase,
null,
Jwk::ALGORITHM_ECDH_ES_A128KW,
Jwk::PUBLIC_KEY_USE_ENCRYPTION,
$kid
);
}
/**
* Create JWK to use ECDH-ES+A192KW algorithm with EC key to encrypt JWE.
*
* @param string $publicEcKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createEncryptEcdhEsA192kwWithEc(string $publicEcKey, ?string $kid = null): Jwk
{
return $this->createPublicEc(
$publicEcKey,
null,
Jwk::ALGORITHM_ECDH_ES_A192KW,
Jwk::PUBLIC_KEY_USE_ENCRYPTION,
$kid
);
}
/**
* Create JWK to use ECDH-ES+A192KW algorithm with EC key to decrypt JWE.
*
* @param string $privateEcKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createDecryptEcdhEsA192kwWithEc(string $privateEcKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateEc(
$privateEcKey,
$passPhrase,
null,
Jwk::ALGORITHM_ECDH_ES_A192KW,
Jwk::PUBLIC_KEY_USE_ENCRYPTION,
$kid
);
}
/**
* Create JWK to use ECDH-ES+A256KW algorithm with EC key to encrypt JWE.
*
* @param string $publicEcKey
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createEncryptEcdhEsA256kwWithEc(string $publicEcKey, ?string $kid = null): Jwk
{
return $this->createPublicEc(
$publicEcKey,
null,
Jwk::ALGORITHM_ECDH_ES_A256KW,
Jwk::PUBLIC_KEY_USE_ENCRYPTION,
$kid
);
}
/**
* Create JWK to use ECDH-ES+A256KW algorithm with EC key to decrypt JWE.
*
* @param string $privateEcKey
* @param string|null $passPhrase
* @param string|null $kid JWK ID.
* @return Jwk
*/
public function createDecryptEcdhEsA256kwWithEc(string $privateEcKey, ?string $passPhrase, ?string $kid = null): Jwk
{
return $this->createPrivateEc(
$privateEcKey,
$passPhrase,
null,
Jwk::ALGORITHM_ECDH_ES_A256KW,
Jwk::PUBLIC_KEY_USE_ENCRYPTION,
$kid
);
}
/**
* Create JWK to encrypt/decrypt JWEs with A128GCMKW algorithm.
*
* @param string $key
* @param string|null $kid
* @return Jwk
*/
public function createA128Gcmkw(string $key, ?string $kid = null): Jwk
{
return $this->createOct($key, Jwk::PUBLIC_KEY_USE_ENCRYPTION, Jwk::ALGORITHM_A128GCMKW, $kid);
}
/**
* Create JWK to encrypt/decrypt JWEs with A192GCMKW algorithm.
*
* @param string $key
* @param string|null $kid
* @return Jwk
*/
public function createA192Gcmkw(string $key, ?string $kid = null): Jwk
{
return $this->createOct($key, Jwk::PUBLIC_KEY_USE_ENCRYPTION, Jwk::ALGORITHM_A192GCMKW, $kid);
}
/**
* Create JWK to encrypt/decrypt JWEs with A256GCMKW algorithm.
*
* @param string $key
* @param string|null $kid
* @return Jwk
*/
public function createA256Gcmkw(string $key, ?string $kid = null): Jwk
{
return $this->createOct($key, Jwk::PUBLIC_KEY_USE_ENCRYPTION, Jwk::ALGORITHM_A256GCMKW, $kid);
}
/**
* Create JWK to encrypt/decrypt JWEs with PBES2-HS256+A128KW algorithm.
*
* @param string $password
* @param string|null $kid
* @return Jwk
*/
public function createPbes2Hs256A128kw(string $password, ?string $kid = null): Jwk
{
return $this->createOct($password, Jwk::PUBLIC_KEY_USE_ENCRYPTION, Jwk::ALGORITHM_PBES2_HS256_A128KW, $kid);
}
/**
* Create JWK to encrypt/decrypt JWEs with PBES2-HS384+A192KW algorithm.
*
* @param string $password
* @param string|null $kid
* @return Jwk
*/
public function createPbes2Hs384A192kw(string $password, ?string $kid = null): Jwk
{
return $this->createOct($password, Jwk::PUBLIC_KEY_USE_ENCRYPTION, Jwk::ALGORITHM_PBES2_HS384_A192KW, $kid);
}
/**
* Create JWK to encrypt/decrypt JWEs with PBES2-HS512+A256KW algorithm.
*
* @param string $password
* @param string|null $kid
* @return Jwk
*/
public function createPbes2Hs512A256kw(string $password, ?string $kid = null): Jwk
{
return $this->createOct($password, Jwk::PUBLIC_KEY_USE_ENCRYPTION, Jwk::ALGORITHM_PBES2_HS512_A256KW, $kid);
}
public function createNone(): Jwk
{
return new Jwk(
'none',
[],
null,
[Jwk::KEY_OP_SIGN, Jwk::KEY_OP_ENCRYPT],
'none'
);
}
private function createOct(string $key, string $use, string $algo, ?string $kid): Jwk
{
if (strlen($key) < 2048) {
throw new \InvalidArgumentException('Shared secret key must be at least 2048 bits.');
}
return new Jwk(
Jwk::KEY_TYPE_OCTET,
['k' => self::base64Encode($key)],
$use,
null,
$algo,
null,
null,
null,
null,
$kid
);
}
private function createPrivateRsa(string $key, ?string $pass, string $use, string $algorithm, ?string $kid): Jwk
{
$resource = openssl_get_privatekey($key, (string)$pass);
$keyData = openssl_pkey_get_details($resource)['rsa'];
$this->freeResource($resource);
$keysMap = [
'n' => 'n',
'e' => 'e',
'd' => 'd',
'p' => 'p',
'q' => 'q',
'dp' => 'dmp1',
'dq' => 'dmq1',
'qi' => 'iqmp'
];
$jwkData = [];
foreach ($keysMap as $jwkKey => $rsaKey) {
if (array_key_exists($rsaKey, $keyData)) {
$jwkData[$jwkKey] = self::base64Encode($keyData[$rsaKey]);
}
}
return new Jwk(
Jwk::KEY_TYPE_RSA,
$jwkData,
$use,
null,
$algorithm,
null,
null,
null,
null,
$kid
);
}
private function createPublicRsa(string $key, string $use, string $algorithm, ?string $kid): Jwk
{
$resource = openssl_get_publickey($key);
$keyData = openssl_pkey_get_details($resource)['rsa'];
$this->freeResource($resource);
$keysMap = [
'n' => 'n',
'e' => 'e'
];
$jwkData = [];
foreach ($keysMap as $jwkKey => $rsaKey) {
if (array_key_exists($rsaKey, $keyData)) {
$jwkData[$jwkKey] = self::base64Encode($keyData[$rsaKey]);
}
}
return new Jwk(
Jwk::KEY_TYPE_RSA,
$jwkData,
$use,
null,
$algorithm,
null,
null,
null,
null,
$kid
);
}
private function createPrivateEc(
string $key,
?string $pass,
?int $validateCurveBits,
string $algorithm,
string $use,
?string $kid
): Jwk {
$resource = openssl_get_privatekey($key, (string)$pass);
$keyData = openssl_pkey_get_details($resource)['ec'];
$this->freeResource($resource);
if (!array_key_exists($keyData['curve_oid'], self::EC_CURVE_MAP)) {
throw new \RuntimeException('Unsupported EC curve');
}
if ($validateCurveBits && $validateCurveBits !== self::EC_CURVE_MAP[$keyData['curve_oid']]['bits']) {
throw new \RuntimeException(
'The key cannot be used with SHA-' .$validateCurveBits .' hashing algorithm'
);
}
return new Jwk(
Jwk::KEY_TYPE_EC,
[
'd' => self::base64Encode($keyData['d']),
'x' => self::base64Encode($keyData['x']),
'y' => self::base64Encode($keyData['y']),
'crv' => self::EC_CURVE_MAP[$keyData['curve_oid']]['name']
],
$use,
null,
$algorithm,
null,
null,
null,
null,
$kid
);
}
private function createPublicEc(
string $key,
?int $validateCurveBits,
string $algorithm,
string $use,
?string $kid
): Jwk {
$resource = openssl_get_publickey($key);
$keyData = openssl_pkey_get_details($resource)['ec'];
$this->freeResource($resource);
if (!array_key_exists($keyData['curve_oid'], self::EC_CURVE_MAP)) {
throw new \RuntimeException('Unsupported EC curve');
}
if ($validateCurveBits && $validateCurveBits !== self::EC_CURVE_MAP[$keyData['curve_oid']]['bits']) {
throw new \RuntimeException(
'The key cannot be used with SHA-' .$validateCurveBits .' hashing algorithm'
);
}
return new Jwk(
Jwk::KEY_TYPE_EC,
[
'x' => self::base64Encode($keyData['x']),
'y' => self::base64Encode($keyData['y']),
'crv' => self::EC_CURVE_MAP[$keyData['curve_oid']]['name']
],
$use,
null,
$algorithm,
null,
null,
null,
null,
$kid
);
}
/**
* Encode value into Base64Url format.
*
* @param string $value
* @return string
*/
private static function base64Encode(string $value): string
{
return rtrim(strtr(base64_encode($value), '+/', '-_'), '=');
}
/**
* Decode Base64Url value.
*
* @param string $encoded
* @return string
*/
private static function base64Decode(string $encoded): string
{
$value = base64_decode(strtr($encoded, '-_', '+/'), true);
if ($value === false) {
throw new \InvalidArgumentException('Invalid base64Url string provided');
}
return $value;
}
/**
* @param mixed $resource
*
* @return void
*/
private function freeResource($resource): void
{
if (\is_resource($resource) && (version_compare(PHP_VERSION, '8.0') < 0)) {
openssl_free_key($resource);
}
}
}