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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) 2014-2019 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 OAuth2Framework\Component\OpenIdConnect\UserInfo\Pairwise; |
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use Base64Url\Base64Url; |
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use OAuth2Framework\Component\Core\UserAccount\UserAccount; |
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final class EncryptedSubjectIdentifier implements PairwiseSubjectIdentifierAlgorithm |
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{ |
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/** |
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* @var string |
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*/ |
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private $pairwiseEncryptionKey; |
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/** |
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* @var string |
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*/ |
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private $algorithm; |
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/** |
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* EncryptedSubjectIdentifier constructor. |
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*/ |
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public function __construct(string $pairwiseEncryptionKey, string $algorithm) |
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{ |
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if (!\in_array($algorithm, openssl_get_cipher_methods(), true)) { |
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throw new \InvalidArgumentException(\Safe\sprintf('The algorithm "%s" is not supported.', $algorithm)); |
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} |
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$this->pairwiseEncryptionKey = $pairwiseEncryptionKey; |
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$this->algorithm = $algorithm; |
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} |
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public function calculateSubjectIdentifier(UserAccount $userAccount, string $sectorIdentifierHost): string |
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{ |
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$prepared = \Safe\sprintf('%s:%s', $sectorIdentifierHost, $userAccount->getUserAccountId()->getValue()); |
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$iv = hash('sha512', $userAccount->getUserAccountId()->getValue(), true); |
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$ivSize = \Safe\openssl_cipher_iv_length($this->algorithm); |
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$iv = mb_substr($iv, 0, $ivSize, '8bit'); |
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return Base64Url::encode($iv).':'.Base64Url::encode(\Safe\openssl_encrypt($prepared, $this->algorithm, $this->pairwiseEncryptionKey, OPENSSL_RAW_DATA, $iv)); |
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} |
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public function getPublicIdFromSubjectIdentifier(string $subjectIdentifier): ?string |
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{ |
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$data = explode(':', $subjectIdentifier); |
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if (2 !== \count($data)) { |
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return null; |
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} |
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$decoded = \Safe\openssl_decrypt(Base64Url::decode($data[1]), $this->algorithm, $this->pairwiseEncryptionKey, OPENSSL_RAW_DATA, Base64Url::decode($data[0])); |
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$parts = explode(':', $decoded); |
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if (3 !== \count($parts)) { |
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return null; |
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} |
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return $parts[1]; |
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} |
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} |
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OAuth2-Framework /
oauth2-framework
