91 lines
2.5 KiB
PHP
91 lines
2.5 KiB
PHP
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<?php
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/**
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* @copyright Copyright (c) 2016 Lukas Reschke <lukas@statuscode.ch>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OC\Security\IdentityProof;
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use OCP\Files\IAppData;
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use OCP\Files\SimpleFS\ISimpleFolder;
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use OCP\IUser;
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use OCP\Security\ICrypto;
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class Manager {
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/** @var ISimpleFolder */
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private $folder;
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/** @var ICrypto */
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private $crypto;
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/**
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* @param IAppData $appData
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* @param ICrypto $crypto
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*/
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public function __construct(IAppData $appData,
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ICrypto $crypto) {
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$this->folder = $appData->getFolder('identityproof');
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$this->crypto = $crypto;
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}
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/**
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* Generate a key for $user
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* Note: If a key already exists it will be overwritten
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*
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* @param IUser $user
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* @return Key
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*/
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public function generateKey(IUser $user) {
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$config = [
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'digest_alg' => 'sha512',
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'private_key_bits' => 2048,
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];
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// Generate new key
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$res = openssl_pkey_new($config);
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openssl_pkey_export($res, $privateKey);
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// Extract the public key from $res to $pubKey
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$publicKey = openssl_pkey_get_details($res);
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$publicKey = $publicKey['key'];
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// Write the private and public key to the disk
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$this->folder->newFile($user->getUID() . '.private')
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->putContent($this->crypto->encrypt($privateKey));
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$this->folder->newFile($user->getUID() . '.public')
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->putContent($publicKey);
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return new Key($publicKey, $privateKey);
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}
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/**
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* Get public and private key for $user
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*
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* @param IUser $user
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* @return Key
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*/
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public function getKey(IUser $user) {
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try {
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$privateKey = $this->crypto->decrypt($this->folder->getFile($user->getUID() . '.private')->getContent());
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$publicKey = $this->folder->getFile($user->getUID() . '.public')->getContent();
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return new Key($publicKey, $privateKey);
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} catch (\Exception $e) {
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return $this->generateKey($user);
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}
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}
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}
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