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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\Encryption\Algorithm\KeyEncryption; |
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use Jose\Component\Core\JWK; |
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/** |
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* Class ECDHESAESKW. |
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*/ |
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abstract class ECDHESAESKW implements KeyAgreementWrappingInterface |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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public function allowedKeyTypes(): array |
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{ |
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return ['EC', 'OKP']; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function wrapAgreementKey(JWK $receiver_key, string $cek, int $encryption_key_length, array $complete_header, array &$additional_header_values): string |
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{ |
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$ecdh_es = new ECDHES(); |
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$agreement_key = $ecdh_es->getAgreementKey($this->getKeyLength(), $this->name(), $receiver_key->toPublic(), $complete_header, $additional_header_values); |
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$wrapper = $this->getWrapper(); |
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return $wrapper::wrap($agreement_key, $cek); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function unwrapAgreementKey(JWK $receiver_key, string $encrypted_cek, int $encryption_key_length, array $complete_header): string |
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{ |
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$ecdh_es = new ECDHES(); |
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$agreement_key = $ecdh_es->getAgreementKey($this->getKeyLength(), $this->name(), $receiver_key, $complete_header); |
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$wrapper = $this->getWrapper(); |
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return $wrapper::unwrap($agreement_key, $encrypted_cek); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getKeyManagementMode(): string |
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{ |
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return self::MODE_WRAP; |
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} |
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/** |
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* @return \AESKW\A128KW|\AESKW\A192KW|\AESKW\A256KW |
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*/ |
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abstract protected function getWrapper(); |
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/** |
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* @return int |
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*/ |
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abstract protected function getKeyLength(): int; |
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} |
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Spomky-Labs /
jose
