Jose\Behaviour\EncrypterTrait::checkKeys PHP Method

    private function checkKeys(Algorithm\KeyEncryptionAlgorithmInterface $key_encryption_algorithm, Algorithm\ContentEncryptionAlgorithmInterface $content_encryption_algorithm, Object\JWKInterface $recipient_key)
    {
        $this->checkKeyUsage($recipient_key, 'encryption');
        if ('dir' !== $key_encryption_algorithm->getAlgorithmName()) {
            $this->checkKeyAlgorithm($recipient_key, $key_encryption_algorithm->getAlgorithmName());
        } else {
            $this->checkKeyAlgorithm($recipient_key, $content_encryption_algorithm->getAlgorithmName());
        }
    }