1 | /* |
2 | * cchmac.h |
3 | * corecrypto |
4 | * |
5 | * Created on 12/07/2010 |
6 | * |
7 | * Copyright (c) 2010,2011,2012,2014,2015 Apple Inc. All rights reserved. |
8 | * |
9 | */ |
10 | |
11 | #ifndef _CORECRYPTO_CCHMAC_H_ |
12 | #define _CORECRYPTO_CCHMAC_H_ |
13 | |
14 | #include <corecrypto/cc.h> |
15 | #include <corecrypto/ccdigest.h> |
16 | |
17 | /* An hmac_ctx_t is normally allocated as an array of these. */ |
18 | struct cchmac_ctx { |
19 | uint8_t b[8]; |
20 | } CC_ALIGNED(8); |
21 | |
22 | typedef struct cchmac_ctx* cchmac_ctx_t; |
23 | |
24 | #define cchmac_ctx_size(STATE_SIZE, BLOCK_SIZE) (ccdigest_ctx_size(STATE_SIZE, BLOCK_SIZE) + (STATE_SIZE)) |
25 | #define cchmac_di_size(_di_) (cchmac_ctx_size((_di_)->state_size, (_di_)->block_size)) |
26 | |
27 | #define cchmac_ctx_n(STATE_SIZE, BLOCK_SIZE) ccn_nof_size(cchmac_ctx_size((STATE_SIZE), (BLOCK_SIZE))) |
28 | |
29 | #define cchmac_ctx_decl(STATE_SIZE, BLOCK_SIZE, _name_) cc_ctx_decl(struct cchmac_ctx, cchmac_ctx_size(STATE_SIZE, BLOCK_SIZE), _name_) |
30 | #define cchmac_ctx_clear(STATE_SIZE, BLOCK_SIZE, _name_) cc_clear(cchmac_ctx_size(STATE_SIZE, BLOCK_SIZE), _name_) |
31 | #define cchmac_di_decl(_di_, _name_) cchmac_ctx_decl((_di_)->state_size, (_di_)->block_size, _name_) |
32 | #define cchmac_di_clear(_di_, _name_) cchmac_ctx_clear((_di_)->state_size, (_di_)->block_size, _name_) |
33 | |
34 | /* Return a ccdigest_ctx_t which can be accesed with the macros in ccdigest.h */ |
35 | #define cchmac_digest_ctx(_di_, HC) ((ccdigest_ctx_t)(HC)) |
36 | |
37 | /* Accesors for ostate fields, this is all cchmac_ctx_t adds to the ccdigest_ctx_t. */ |
38 | #define cchmac_ostate(_di_, HC) ((struct ccdigest_state *)(((cchmac_ctx_t)(HC))->b + ccdigest_di_size(_di_))) |
39 | #define cchmac_ostate8(_di_, HC) (ccdigest_u8(cchmac_ostate(_di_, HC))) |
40 | #define cchmac_ostate32(_di_, HC) (ccdigest_u32(cchmac_ostate(_di_, HC))) |
41 | #define cchmac_ostate64(_di_, HC) (ccdigest_u64(cchmac_ostate(_di_, HC))) |
42 | #define cchmac_ostateccn(_di_, HC) (ccdigest_ccn(cchmac_ostate(_di_, HC))) |
43 | |
44 | /* Convenience accessors for ccdigest_ctx_t fields. */ |
45 | #define cchmac_istate(_di_, HC) ccdigest_state(_di_, ((ccdigest_ctx_t)(HC))) |
46 | #define cchmac_istate8(_di_, HC) ccdigest_u8(cchmac_istate(_di_, HC)) |
47 | #define cchmac_istate32(_di_, HC) ccdigest_u32(cchmac_istate(_di_, HC)) |
48 | #define cchmac_istate64(_di_, HC) ccdigest_u64(cchmac_istate(_di_, HC)) |
49 | #define cchmac_istateccn(_di_, HC) ccdigest_ccn(cchmac_istate(_di_, HC)) |
50 | |
51 | #define cchmac_data(_di_, HC) ccdigest_data(_di_, ((ccdigest_ctx_t)(HC))) |
52 | #define cchmac_num(_di_, HC) ccdigest_num(_di_, ((ccdigest_ctx_t)(HC))) |
53 | #define cchmac_nbits(_di_, HC) ccdigest_nbits(_di_, ((ccdigest_ctx_t)(HC))) |
54 | |
55 | void cchmac_init(const struct ccdigest_info *di, cchmac_ctx_t ctx, |
56 | size_t key_len, const void *key); |
57 | void cchmac_update(const struct ccdigest_info *di, cchmac_ctx_t ctx, |
58 | size_t data_len, const void *data); |
59 | void cchmac_final(const struct ccdigest_info *di, cchmac_ctx_t ctx, |
60 | unsigned char *mac); |
61 | |
62 | void cchmac(const struct ccdigest_info *di, size_t key_len, |
63 | const void *key, size_t data_len, const void *data, |
64 | unsigned char *mac); |
65 | |
66 | #endif /* _CORECRYPTO_CCHMAC_H_ */ |
67 | |