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5a285add | 1 | /* |
d2ba8123 SL |
2 | * Copyright 2018-2019 The OpenSSL Project Authors. All Rights Reserved. |
3 | * Copyright (c) 2018-2019, Oracle and/or its affiliates. All rights reserved. | |
5a285add DM |
4 | * |
5 | * Licensed under the Apache License 2.0 (the "License"). You may not use | |
6 | * this file except in compliance with the License. You can obtain a copy | |
7 | * in the file LICENSE in the source distribution or at | |
8 | * https://www.openssl.org/source/license.html | |
9 | */ | |
10 | ||
11 | #include <stdio.h> | |
12 | #include <stdlib.h> | |
13 | #include "internal/cryptlib.h" | |
14 | #include <openssl/engine.h> | |
15 | #include <openssl/evp.h> | |
16 | #include <openssl/x509v3.h> | |
17 | #include <openssl/kdf.h> | |
fb9e6dd6 P |
18 | #include <openssl/core.h> |
19 | #include <openssl/core_names.h> | |
25f2138b DMSP |
20 | #include "crypto/asn1.h" |
21 | #include "crypto/evp.h" | |
5a285add | 22 | #include "internal/numbers.h" |
fb9e6dd6 | 23 | #include "internal/provider.h" |
706457b7 | 24 | #include "evp_local.h" |
5a285add | 25 | |
fb9e6dd6 | 26 | EVP_KDF_CTX *EVP_KDF_CTX_new(EVP_KDF *kdf) |
5a285add | 27 | { |
8bbeaaa4 | 28 | EVP_KDF_CTX *ctx = NULL; |
d2ba8123 | 29 | |
8bbeaaa4 SL |
30 | if (kdf == NULL) |
31 | return NULL; | |
32 | ||
33 | ctx = OPENSSL_zalloc(sizeof(EVP_KDF_CTX)); | |
fb9e6dd6 P |
34 | if (ctx == NULL |
35 | || (ctx->data = kdf->newctx(ossl_provider_ctx(kdf->prov))) == NULL | |
36 | || !EVP_KDF_up_ref(kdf)) { | |
d2ba8123 | 37 | EVPerr(EVP_F_EVP_KDF_CTX_NEW, ERR_R_MALLOC_FAILURE); |
fb9e6dd6 P |
38 | if (ctx != NULL) |
39 | kdf->freectx(ctx->data); | |
d2ba8123 SL |
40 | OPENSSL_free(ctx); |
41 | ctx = NULL; | |
42 | } else { | |
43 | ctx->meth = kdf; | |
44 | } | |
45 | return ctx; | |
5a285add DM |
46 | } |
47 | ||
fb9e6dd6 | 48 | void EVP_KDF_CTX_free(EVP_KDF_CTX *ctx) |
5a285add | 49 | { |
fb9e6dd6 P |
50 | if (ctx != NULL) { |
51 | ctx->meth->freectx(ctx->data); | |
52 | ctx->data = NULL; | |
53 | EVP_KDF_free(ctx->meth); | |
54 | OPENSSL_free(ctx); | |
55 | } | |
5a285add DM |
56 | } |
57 | ||
fb9e6dd6 | 58 | EVP_KDF_CTX *EVP_KDF_CTX_dup(const EVP_KDF_CTX *src) |
5a285add | 59 | { |
fb9e6dd6 P |
60 | EVP_KDF_CTX *dst; |
61 | ||
6ce4ff19 | 62 | if (src == NULL || src->data == NULL || src->meth->dupctx == NULL) |
fb9e6dd6 P |
63 | return NULL; |
64 | ||
65 | dst = OPENSSL_malloc(sizeof(*dst)); | |
66 | if (dst == NULL) { | |
67 | EVPerr(EVP_F_EVP_KDF_CTX_DUP, ERR_R_MALLOC_FAILURE); | |
68 | return NULL; | |
69 | } | |
70 | ||
71 | memcpy(dst, src, sizeof(*dst)); | |
72 | if (!EVP_KDF_up_ref(dst->meth)) { | |
73 | EVPerr(EVP_F_EVP_KDF_CTX_DUP, ERR_R_MALLOC_FAILURE); | |
74 | OPENSSL_free(dst); | |
75 | return NULL; | |
76 | } | |
77 | ||
78 | dst->data = src->meth->dupctx(src->data); | |
79 | if (dst->data == NULL) { | |
80 | EVP_KDF_CTX_free(dst); | |
81 | return NULL; | |
82 | } | |
83 | return dst; | |
d2ba8123 | 84 | } |
5a285add | 85 | |
251e610c RL |
86 | int EVP_KDF_is_a(const EVP_KDF *kdf, const char *name) |
87 | { | |
88 | return evp_is_a(kdf->prov, kdf->name_id, name); | |
89 | } | |
90 | ||
fb9e6dd6 | 91 | const OSSL_PROVIDER *EVP_KDF_provider(const EVP_KDF *kdf) |
5a285add | 92 | { |
fb9e6dd6 P |
93 | return kdf->prov; |
94 | } | |
5a285add | 95 | |
fb9e6dd6 P |
96 | const EVP_KDF *EVP_KDF_CTX_kdf(EVP_KDF_CTX *ctx) |
97 | { | |
98 | return ctx->meth; | |
5a285add DM |
99 | } |
100 | ||
101 | void EVP_KDF_reset(EVP_KDF_CTX *ctx) | |
102 | { | |
103 | if (ctx == NULL) | |
104 | return; | |
105 | ||
d2ba8123 | 106 | if (ctx->meth->reset != NULL) |
fb9e6dd6 | 107 | ctx->meth->reset(ctx->data); |
5a285add DM |
108 | } |
109 | ||
fb9e6dd6 | 110 | size_t EVP_KDF_size(EVP_KDF_CTX *ctx) |
5a285add | 111 | { |
fb9e6dd6 P |
112 | OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; |
113 | size_t s; | |
5a285add | 114 | |
5a285add DM |
115 | if (ctx == NULL) |
116 | return 0; | |
117 | ||
fb9e6dd6 P |
118 | *params = OSSL_PARAM_construct_size_t(OSSL_KDF_PARAM_SIZE, &s); |
119 | if (ctx->meth->get_ctx_params != NULL | |
6b3d0423 | 120 | && ctx->meth->get_ctx_params(ctx->data, params)) |
fb9e6dd6 P |
121 | return s; |
122 | if (ctx->meth->get_params != NULL | |
123 | && ctx->meth->get_params(params)) | |
124 | return s; | |
125 | return 0; | |
5a285add DM |
126 | } |
127 | ||
fb9e6dd6 | 128 | int EVP_KDF_derive(EVP_KDF_CTX *ctx, unsigned char *key, size_t keylen) |
5a285add | 129 | { |
5a285add DM |
130 | if (ctx == NULL) |
131 | return 0; | |
132 | ||
fb9e6dd6 | 133 | return ctx->meth->derive(ctx->data, key, keylen); |
5a285add DM |
134 | } |
135 | ||
fb9e6dd6 P |
136 | /* |
137 | * The {get,set}_params functions return 1 if there is no corresponding | |
138 | * function in the implementation. This is the same as if there was one, | |
139 | * but it didn't recognise any of the given params, i.e. nothing in the | |
140 | * bag of parameters was useful. | |
141 | */ | |
142 | int EVP_KDF_get_params(EVP_KDF *kdf, OSSL_PARAM params[]) | |
5a285add | 143 | { |
fb9e6dd6 P |
144 | if (kdf->get_params != NULL) |
145 | return kdf->get_params(params); | |
146 | return 1; | |
5a285add DM |
147 | } |
148 | ||
fb9e6dd6 | 149 | int EVP_KDF_CTX_get_params(EVP_KDF_CTX *ctx, OSSL_PARAM params[]) |
5a285add | 150 | { |
fb9e6dd6 P |
151 | if (ctx->meth->get_ctx_params != NULL) |
152 | return ctx->meth->get_ctx_params(ctx->data, params); | |
153 | return 1; | |
154 | } | |
5a285add | 155 | |
fb9e6dd6 P |
156 | int EVP_KDF_CTX_set_params(EVP_KDF_CTX *ctx, const OSSL_PARAM params[]) |
157 | { | |
158 | if (ctx->meth->set_ctx_params != NULL) | |
159 | return ctx->meth->set_ctx_params(ctx->data, params); | |
160 | return 1; | |
5a285add | 161 | } |
f651c727 RL |
162 | |
163 | void EVP_KDF_names_do_all(const EVP_KDF *kdf, | |
164 | void (*fn)(const char *name, void *data), | |
165 | void *data) | |
166 | { | |
167 | if (kdf->prov != NULL) | |
168 | evp_names_do_all(kdf->prov, kdf->name_id, fn, data); | |
169 | } |