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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; \ | |
ec02412b RL |
45 | static OSSL_OP_digest_gettable_params_fn name##_gettable_params; \ |
46 | static const OSSL_PARAM known_##name##_gettable_params[] = { \ | |
47 | {OSSL_DIGEST_PARAM_BLOCK_SIZE, OSSL_PARAM_INTEGER, \ | |
48 | NULL, sizeof(int), 0}, \ | |
49 | {OSSL_DIGEST_PARAM_SIZE, OSSL_PARAM_INTEGER, NULL, sizeof(int), 0}, \ | |
50 | {OSSL_DIGEST_PARAM_FLAGS, OSSL_PARAM_INTEGER, \ | |
51 | NULL, sizeof(unsigned long), 0}, \ | |
52 | OSSL_PARAM_END \ | |
53 | }; \ | |
54 | static const OSSL_PARAM *name##_gettable_params(void) \ | |
55 | { \ | |
56 | return known_##name##_gettable_params; \ | |
57 | } \ | |
3d214461 RL |
58 | static int name##_get_params(OSSL_PARAM params[]) \ |
59 | { \ | |
60 | OSSL_PARAM *p = NULL; \ | |
61 | \ | |
62 | p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_BLOCK_SIZE); \ | |
63 | if (p != NULL && !OSSL_PARAM_set_int(p, (blksize))) \ | |
64 | return 0; \ | |
65 | p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_SIZE); \ | |
66 | if (p != NULL && !OSSL_PARAM_set_int(p, (dgstsize))) \ | |
67 | return 0; \ | |
68 | p = OSSL_PARAM_locate(params, OSSL_DIGEST_PARAM_FLAGS); \ | |
69 | if (p != NULL && !OSSL_PARAM_set_ulong(p, (flags))) \ | |
70 | return 0; \ | |
71 | return 1; \ | |
72 | } | |
73 | ||
d5e5e2ff SL |
74 | # define OSSL_FUNC_DIGEST_SET_FINAL(name, dgstsize, fin) \ |
75 | static OSSL_OP_digest_final_fn name##_wrapfinal; \ | |
76 | static int name##_wrapfinal(void *ctx, unsigned char *out, size_t *outl, size_t outsz) \ | |
77 | { \ | |
78 | if (outsz >= dgstsize && fin(out, ctx)) { \ | |
79 | *outl = dgstsize; \ | |
80 | return 1; \ | |
81 | } \ | |
82 | return 0; \ | |
83 | } | |
84 | ||
3d214461 | 85 | # define OSSL_FUNC_DIGEST_COMMON(name, init, upd) \ |
d5e5e2ff SL |
86 | const OSSL_DISPATCH name##_functions[] = { \ |
87 | { OSSL_FUNC_DIGEST_NEWCTX, (void (*)(void))name##_newctx }, \ | |
88 | { OSSL_FUNC_DIGEST_INIT, (void (*)(void))init }, \ | |
89 | { OSSL_FUNC_DIGEST_UPDATE, (void (*)(void))upd }, \ | |
90 | { OSSL_FUNC_DIGEST_FINAL, (void (*)(void))name##_wrapfinal }, \ | |
91 | { OSSL_FUNC_DIGEST_FREECTX, (void (*)(void))name##_freectx }, \ | |
92 | { OSSL_FUNC_DIGEST_DUPCTX, (void (*)(void))name##_dupctx }, \ | |
ec02412b RL |
93 | { OSSL_FUNC_DIGEST_GET_PARAMS, (void (*)(void))name##_get_params }, \ |
94 | { OSSL_FUNC_DIGEST_GETTABLE_PARAMS, \ | |
95 | (void (*)(void))name##_gettable_params }, | |
d5e5e2ff SL |
96 | |
97 | # define OSSL_FUNC_DIGEST_CONSTRUCT_END \ | |
98 | { 0, NULL } \ | |
99 | }; | |
100 | ||
3d214461 RL |
101 | # define OSSL_FUNC_DIGEST_CONSTRUCT_START(name, CTX, \ |
102 | blksize, dgstsize, flags, \ | |
103 | init, upd, fin) \ | |
104 | OSSL_FUNC_DIGEST_ALLOC_METHODS(name, CTX) \ | |
105 | OSSL_FUNC_DIGEST_SET_FINAL(name, dgstsize, fin) \ | |
106 | OSSL_FUNC_DIGEST_GET_PARAM(name, blksize, dgstsize, flags) \ | |
107 | OSSL_FUNC_DIGEST_COMMON(name, init, upd) | |
108 | ||
109 | # define OSSL_FUNC_DIGEST_CONSTRUCT(name, CTX, blksize, dgstsize, flags, \ | |
110 | init, upd, fin) \ | |
111 | OSSL_FUNC_DIGEST_CONSTRUCT_START(name, CTX, blksize, dgstsize, flags, \ | |
112 | init, upd, fin) \ | |
d5e5e2ff SL |
113 | OSSL_FUNC_DIGEST_CONSTRUCT_END |
114 | ||
3d214461 RL |
115 | # define OSSL_FUNC_DIGEST_CONSTRUCT_PARAMS(name, CTX, \ |
116 | blksize, dgstsize, flags, \ | |
ec02412b RL |
117 | init, upd, fin, \ |
118 | setparamtypes, setparams) \ | |
3d214461 RL |
119 | OSSL_FUNC_DIGEST_CONSTRUCT_START(name, CTX, blksize, dgstsize, flags, \ |
120 | init, upd, fin) \ | |
ec02412b RL |
121 | { OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS, \ |
122 | (void (*)(void))setparamtypes }, \ | |
3d214461 | 123 | { OSSL_FUNC_DIGEST_CTX_SET_PARAMS, (void (*)(void))setparams }, \ |
d5e5e2ff SL |
124 | OSSL_FUNC_DIGEST_CONSTRUCT_END |
125 | ||
126 | # ifdef __cplusplus | |
127 | } | |
128 | # endif | |
129 | ||
130 | #endif /* OSSL_CORE_MKDIGEST_H */ |