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50 lines
1.7 KiB
PHP
50 lines
1.7 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
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* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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namespace OCP\Security;
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/**
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* Class Crypto provides a high-level encryption layer using AES-CBC. If no key has been provided
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* it will use the secret defined in config.php as key. Additionally the message will be HMAC'd.
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*
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* Usage:
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* $encryptWithDefaultPassword = \OC::$server->getCrypto()->encrypt('EncryptedText');
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* $encryptWithCustomPassword = \OC::$server->getCrypto()->encrypt('EncryptedText', 'password');
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*
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* @since 8.0.0
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*/
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interface ICrypto {
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/**
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* @param string $message The message to authenticate
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* @param string $password Password to use (defaults to `secret` in config.php)
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* @return string Calculated HMAC
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* @since 8.0.0
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*/
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public function calculateHMAC(string $message, string $password = ''): string;
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/**
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* Encrypts a value and adds an HMAC (Encrypt-Then-MAC)
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* @param string $plaintext
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* @param string $password Password to encrypt, if not specified the secret from config.php will be taken
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* @return string Authenticated ciphertext
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* @since 8.0.0
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*/
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public function encrypt(string $plaintext, string $password = ''): string;
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/**
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* Decrypts a value and verifies the HMAC (Encrypt-Then-Mac)
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* @param string $authenticatedCiphertext
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* @param string $password Password to encrypt, if not specified the secret from config.php will be taken
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* @return string plaintext
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* @throws \Exception If the HMAC does not match
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* @throws \Exception If the decryption failed
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* @since 8.0.0
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*/
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public function decrypt(string $authenticatedCiphertext, string $password = ''): string;
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}
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