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1 | /* |
2 | * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use | |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | ||
10 | #ifndef OSSL_CORE_MKDIGEST_H | |
11 | # define OSSL_CORE_MKDIGEST_H | |
12 | ||
13 | # include <openssl/core_numbers.h> | |
3d214461 RL |
14 | # include <openssl/core_names.h> |
15 | # include <openssl/params.h> | |
d5e5e2ff SL |
16 | |
17 | # ifdef __cplusplus | |
18 | extern "C" { | |
19 | # endif | |
20 | ||
21 | # define OSSL_FUNC_DIGEST_ALLOC_METHODS(name, CTX_NAME) \ | |
22 | static OSSL_OP_digest_newctx_fn name##_newctx; \ | |
23 | static OSSL_OP_digest_freectx_fn name##_freectx; \ | |
24 | static OSSL_OP_digest_dupctx_fn name##_dupctx; \ | |
25 | static void *name##_newctx(void *prov_ctx) \ | |
26 | { \ | |
27 | CTX_NAME *ctx = OPENSSL_zalloc(sizeof(*ctx)); \ | |
28 | return ctx; \ | |
29 | } \ | |
30 | static void name##_freectx(void *vctx) \ | |
31 | { \ | |
32 | CTX_NAME *ctx = (CTX_NAME *)vctx; \ | |
33 | OPENSSL_clear_free(ctx, sizeof(*ctx)); \ | |
34 | } \ | |
35 | static void *name##_dupctx(void *ctx) \ | |
36 | { \ | |
37 | CTX_NAME *in = (CTX_NAME *)ctx; \ | |
38 | CTX_NAME *ret = OPENSSL_malloc(sizeof(*ret)); \ | |
39 | *ret = *in; \ | |
40 | return ret; \ | |
41 | } | |
42 | ||
3d214461 RL |
43 | # define OSSL_FUNC_DIGEST_GET_PARAM(name, blksize, dgstsize, flags) \ |
44 | static OSSL_OP_digest_get_params_fn name##_get_params; \ | |
45 | static int name##_get_params(OSSL_PARAM params[]) \ | |
46 | { \ | |
47 | OSSL_PARAM *p = NULL; \ | |
48 | \ | |
49 | p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_BLOCK_SIZE); \ | |
50 | if (p != NULL && !OSSL_PARAM_set_int(p, (blksize))) \ | |
51 | return 0; \ | |
52 | p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_SIZE); \ | |
53 | if (p != NULL && !OSSL_PARAM_set_int(p, (dgstsize))) \ | |
54 | return 0; \ | |
55 | p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_FLAGS); \ | |
56 | if (p != NULL && !OSSL_PARAM_set_ulong(p, (flags))) \ | |
57 | return 0; \ | |
58 | return 1; \ | |
59 | } | |
60 | ||
d5e5e2ff SL |
61 | # define OSSL_FUNC_DIGEST_SET_FINAL(name, dgstsize, fin) \ |
62 | static OSSL_OP_digest_final_fn name##_wrapfinal; \ | |
63 | static int name##_wrapfinal(void *ctx, unsigned char *out, size_t *outl, size_t outsz) \ | |
64 | { \ | |
65 | if (outsz >= dgstsize && fin(out, ctx)) { \ | |
66 | *outl = dgstsize; \ | |
67 | return 1; \ | |
68 | } \ | |
69 | return 0; \ | |
70 | } | |
71 | ||
3d214461 | 72 | # define OSSL_FUNC_DIGEST_COMMON(name, init, upd) \ |
d5e5e2ff SL |
73 | const OSSL_DISPATCH name##_functions[] = { \ |
74 | { OSSL_FUNC_DIGEST_NEWCTX, (void (*)(void))name##_newctx }, \ | |
75 | { OSSL_FUNC_DIGEST_INIT, (void (*)(void))init }, \ | |
76 | { OSSL_FUNC_DIGEST_UPDATE, (void (*)(void))upd }, \ | |
77 | { OSSL_FUNC_DIGEST_FINAL, (void (*)(void))name##_wrapfinal }, \ | |
78 | { OSSL_FUNC_DIGEST_FREECTX, (void (*)(void))name##_freectx }, \ | |
79 | { OSSL_FUNC_DIGEST_DUPCTX, (void (*)(void))name##_dupctx }, \ | |
3d214461 | 80 | { OSSL_FUNC_DIGEST_GET_PARAMS, (void (*)(void))name##_get_params }, |
d5e5e2ff SL |
81 | |
82 | # define OSSL_FUNC_DIGEST_CONSTRUCT_END \ | |
83 | { 0, NULL } \ | |
84 | }; | |
85 | ||
3d214461 RL |
86 | # define OSSL_FUNC_DIGEST_CONSTRUCT_START(name, CTX, \ |
87 | blksize, dgstsize, flags, \ | |
88 | init, upd, fin) \ | |
89 | OSSL_FUNC_DIGEST_ALLOC_METHODS(name, CTX) \ | |
90 | OSSL_FUNC_DIGEST_SET_FINAL(name, dgstsize, fin) \ | |
91 | OSSL_FUNC_DIGEST_GET_PARAM(name, blksize, dgstsize, flags) \ | |
92 | OSSL_FUNC_DIGEST_COMMON(name, init, upd) | |
93 | ||
94 | # define OSSL_FUNC_DIGEST_CONSTRUCT(name, CTX, blksize, dgstsize, flags, \ | |
95 | init, upd, fin) \ | |
96 | OSSL_FUNC_DIGEST_CONSTRUCT_START(name, CTX, blksize, dgstsize, flags, \ | |
97 | init, upd, fin) \ | |
d5e5e2ff SL |
98 | OSSL_FUNC_DIGEST_CONSTRUCT_END |
99 | ||
3d214461 RL |
100 | # define OSSL_FUNC_DIGEST_CONSTRUCT_PARAMS(name, CTX, \ |
101 | blksize, dgstsize, flags, \ | |
102 | init, upd, fin, setparams) \ | |
103 | OSSL_FUNC_DIGEST_CONSTRUCT_START(name, CTX, blksize, dgstsize, flags, \ | |
104 | init, upd, fin) \ | |
105 | { OSSL_FUNC_DIGEST_CTX_SET_PARAMS, (void (*)(void))setparams }, \ | |
d5e5e2ff SL |
106 | OSSL_FUNC_DIGEST_CONSTRUCT_END |
107 | ||
108 | # ifdef __cplusplus | |
109 | } | |
110 | # endif | |
111 | ||
112 | #endif /* OSSL_CORE_MKDIGEST_H */ |