ObjFW
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OFHMAC.h
1/*
2 * Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
3 *
4 * All rights reserved.
5 *
6 * This file is part of ObjFW. It may be distributed under the terms of the
7 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
8 * the packaging of this file.
9 *
10 * Alternatively, it may be distributed under the terms of the GNU General
11 * Public License, either version 2 or 3, which can be found in the file
12 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
13 * file.
14 */
15
16#import "OFObject.h"
17#import "OFCryptographicHash.h"
18
19OF_ASSUME_NONNULL_BEGIN
20
26OF_SUBCLASSING_RESTRICTED
27@interface OFHMAC: OFObject
28{
29 Class <OFCryptographicHash> _hashClass;
30 bool _allowsSwappableMemory;
31 id <OFCryptographicHash> _Nullable _outerHash, _innerHash;
32 id <OFCryptographicHash> _Nullable _outerHashCopy, _innerHashCopy;
33 bool _calculated;
34}
35
39@property (readonly, nonatomic) Class <OFCryptographicHash> hashClass;
40
44@property (readonly, nonatomic) bool allowsSwappableMemory;
45
54@property (readonly, nonatomic) const unsigned char *digest
55 OF_RETURNS_INNER_POINTER;
56
60@property (readonly, nonatomic) size_t digestSize;
61
69+ (instancetype)HMACWithHashClass: (Class <OFCryptographicHash>)hashClass
70 allowsSwappableMemory: (bool)allowsSwappableMemory;
71
72- (instancetype)init OF_UNAVAILABLE;
73
82- (instancetype)initWithHashClass: (Class <OFCryptographicHash>)hashClass
83 allowsSwappableMemory: (bool)allowsSwappableMemory
84 OF_DESIGNATED_INITIALIZER;
85
98- (void)setKey: (const void *)key length: (size_t)length;
99
107- (void)updateWithBuffer: (const void *)buffer length: (size_t)length;
108
114- (void)calculate;
115
127- (void)reset;
128
135- (void)zero;
136@end
137
138OF_ASSUME_NONNULL_END
A class which provides methods to calculate an HMAC.
Definition OFHMAC.h:28
The root class for all other classes inside ObjFW.
Definition OFObject.h:688