ObjFW  Diff

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
 *               2018, 2019, 2020
 *   Jonathan Schleifer <js@nil.im>
 * Copyright (c) 2008-2021 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *

 * @warning This invalidates any pointer previously returned by @ref digest. If
 *	    you are still interested in the previous digest, you need to memcpy
 *	    it yourself before calling @ref setKey:length:!
 *
 * @param key The key for the HMAC
 * @param length The length of the key for the HMAC
 */
- (void)setKey: (const void *)key
- (void)setKey: (const void *)key length: (size_t)length;
	length: (size_t)length;

/**
 * @brief Adds a buffer to the HMAC to be calculated.
 *
 * @param buffer The buffer which should be included into the calculation
 * @param length The length of the buffer
 */
- (void)updateWithBuffer: (const void *)buffer
- (void)updateWithBuffer: (const void *)buffer length: (size_t)length;
		  length: (size_t)length;

/**
 * @brief Resets the HMAC so that it can be calculated for a new message.
 *
 * @note This does not reset the key so that a new HMAC with the same key can
 *	 be calculated efficiently. If you want to reset both, use
 *	 @ref setKey:length:.