1/* Copyright (c) (2010-2012,2014-2021) Apple Inc. All rights reserved.
2 *
3 * corecrypto is licensed under Apple Inc.’s Internal Use License Agreement (which
4 * is contained in the License.txt file distributed with corecrypto) and only to
5 * people who accept that license. IMPORTANT: Any license rights granted to you by
6 * Apple Inc. (if any) are limited to internal use within your organization only on
7 * devices and computers you own or control, for the sole purpose of verifying the
8 * security characteristics and correct functioning of the Apple Software. You may
9 * not, directly or indirectly, redistribute the Apple Software or any portions thereof.
10 */
11
12#ifndef _CORECRYPTO_CCHMAC_H_
13#define _CORECRYPTO_CCHMAC_H_
14
15#include <corecrypto/cc.h>
16#include <corecrypto/ccdigest.h>
17
18/* An hmac_ctx_t is normally allocated as an array of these. */
19struct cchmac_ctx {
20 uint8_t b[1];
21} CC_ALIGNED(8);
22
23typedef struct cchmac_ctx* cchmac_ctx_t;
24
25#define cchmac_ctx_size(STATE_SIZE, BLOCK_SIZE) (cc_pad_align(ccdigest_ctx_size(STATE_SIZE, BLOCK_SIZE)) + (STATE_SIZE))
26#define cchmac_di_size(_di_) (cchmac_ctx_size((_di_)->state_size, (_di_)->block_size))
27
28#define cchmac_ctx_n(STATE_SIZE, BLOCK_SIZE) ccn_nof_size(cchmac_ctx_size((STATE_SIZE), (BLOCK_SIZE)))
29
30#define cchmac_ctx_decl(STATE_SIZE, BLOCK_SIZE, _name_) cc_ctx_decl_vla(struct cchmac_ctx, cchmac_ctx_size(STATE_SIZE, BLOCK_SIZE), _name_)
31#define cchmac_ctx_clear(STATE_SIZE, BLOCK_SIZE, _name_) cc_clear(cchmac_ctx_size(STATE_SIZE, BLOCK_SIZE), _name_)
32#define cchmac_di_decl(_di_, _name_) cchmac_ctx_decl((_di_)->state_size, (_di_)->block_size, _name_)
33#define cchmac_di_clear(_di_, _name_) cchmac_ctx_clear((_di_)->state_size, (_di_)->block_size, _name_)
34
35/* Return a ccdigest_ctx_t which can be accesed with the macros in ccdigest.h */
36#define cchmac_digest_ctx(_di_, HC) ((ccdigest_ctx_t)(HC))
37
38/* Accesors for ostate fields, this is all cchmac_ctx_t adds to the ccdigest_ctx_t. */
39#define cchmac_ostate(_di_, HC) ((ccdigest_state_t)(((cchmac_ctx_t)(HC))->b + cc_pad_align(ccdigest_di_size(_di_))))
40#define cchmac_ostate8(_di_, HC) (ccdigest_u8(cchmac_ostate(_di_, HC)))
41#define cchmac_ostate32(_di_, HC) (ccdigest_u32(cchmac_ostate(_di_, HC)))
42#define cchmac_ostate64(_di_, HC) (ccdigest_u64(cchmac_ostate(_di_, HC)))
43#define cchmac_ostateccn(_di_, HC) (ccdigest_ccn(cchmac_ostate(_di_, HC)))
44
45/* Convenience accessors for ccdigest_ctx_t fields. */
46#define cchmac_istate(_di_, HC) ccdigest_state(_di_, ((ccdigest_ctx_t)(HC)))
47#define cchmac_istate8(_di_, HC) ccdigest_u8(cchmac_istate(_di_, HC))
48#define cchmac_istate32(_di_, HC) ccdigest_u32(cchmac_istate(_di_, HC))
49#define cchmac_istate64(_di_, HC) ccdigest_u64(cchmac_istate(_di_, HC))
50#define cchmac_istateccn(_di_, HC) ccdigest_ccn(cchmac_istate(_di_, HC))
51
52#define cchmac_data(_di_, HC) ccdigest_data(_di_, ((ccdigest_ctx_t)(HC)))
53#define cchmac_num(_di_, HC) ccdigest_num(_di_, ((ccdigest_ctx_t)(HC)))
54#define cchmac_nbits(_di_, HC) ccdigest_nbits(_di_, ((ccdigest_ctx_t)(HC)))
55
56void cchmac_init(const struct ccdigest_info *di, cchmac_ctx_t ctx,
57 size_t key_len, const void *key);
58void cchmac_update(const struct ccdigest_info *di, cchmac_ctx_t ctx,
59 size_t data_len, const void *data);
60void cchmac_final(const struct ccdigest_info *di, cchmac_ctx_t ctx,
61 unsigned char *mac);
62
63void cchmac(const struct ccdigest_info *di, size_t key_len,
64 const void *key, size_t data_len, const void *data,
65 unsigned char *mac);
66
67#endif /* _CORECRYPTO_CCHMAC_H_ */
68