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2f17cc49 P |
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 | #include <openssl/evp.h> | |
11 | #include <openssl/core_names.h> | |
12 | #include "internal/provider_util.h" | |
13 | ||
14 | void ossl_prov_cipher_reset(PROV_CIPHER *pc) | |
15 | { | |
16 | EVP_CIPHER_free(pc->alloc_cipher); | |
17 | pc->alloc_cipher = NULL; | |
18 | pc->cipher = NULL; | |
19 | pc->engine = NULL; | |
20 | } | |
21 | ||
22 | int ossl_prov_cipher_copy(PROV_CIPHER *dst, const PROV_CIPHER *src) | |
23 | { | |
24 | if (src->alloc_cipher != NULL && !EVP_CIPHER_up_ref(src->alloc_cipher)) | |
25 | return 0; | |
26 | dst->engine = src->engine; | |
27 | dst->cipher = src->cipher; | |
28 | dst->alloc_cipher = src->alloc_cipher; | |
29 | return 1; | |
30 | } | |
31 | ||
32 | static int load_common(const OSSL_PARAM params[], const char **propquery, | |
33 | ENGINE **engine) | |
34 | { | |
35 | const OSSL_PARAM *p; | |
36 | ||
37 | *propquery = NULL; | |
38 | p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_PROPERTIES); | |
39 | if (p != NULL) { | |
40 | if (p->data_type != OSSL_PARAM_UTF8_STRING) | |
41 | return 0; | |
42 | *propquery = p->data; | |
43 | } | |
44 | ||
45 | *engine = NULL; | |
46 | /* TODO legacy stuff, to be removed */ | |
252a3665 MC |
47 | /* Inside the FIPS module, we don't support legacy ciphers */ |
48 | #if !defined(FIPS_MODE) && !defined(OPENSSL_NO_ENGINE) | |
2f17cc49 P |
49 | p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_ENGINE); |
50 | if (p != NULL) { | |
51 | if (p->data_type != OSSL_PARAM_UTF8_STRING) | |
52 | return 0; | |
53 | ENGINE_finish(*engine); | |
54 | *engine = ENGINE_by_id(p->data); | |
55 | if (*engine == NULL) | |
56 | return 0; | |
57 | } | |
58 | #endif | |
59 | return 1; | |
60 | } | |
61 | ||
62 | int ossl_prov_cipher_load_from_params(PROV_CIPHER *pc, | |
63 | const OSSL_PARAM params[], | |
64 | OPENSSL_CTX *ctx) | |
65 | { | |
66 | const OSSL_PARAM *p; | |
67 | const char *propquery; | |
68 | ||
69 | if (!load_common(params, &propquery, &pc->engine)) | |
70 | return 0; | |
71 | ||
72 | p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_CIPHER); | |
73 | if (p == NULL) | |
74 | return 1; | |
75 | if (p->data_type != OSSL_PARAM_UTF8_STRING) | |
76 | return 0; | |
77 | ||
78 | EVP_CIPHER_free(pc->alloc_cipher); | |
79 | pc->cipher = pc->alloc_cipher = EVP_CIPHER_fetch(ctx, p->data, propquery); | |
80 | /* TODO legacy stuff, to be removed */ | |
81 | #ifndef FIPS_MODE /* Inside the FIPS module, we don't support legacy ciphers */ | |
82 | if (pc->cipher == NULL) | |
83 | pc->cipher = EVP_get_cipherbyname(p->data); | |
84 | #endif | |
85 | return pc->cipher != NULL; | |
86 | } | |
87 | ||
88 | const EVP_CIPHER *ossl_prov_cipher_cipher(const PROV_CIPHER *pc) | |
89 | { | |
90 | return pc->cipher; | |
91 | } | |
92 | ||
93 | ENGINE *ossl_prov_cipher_engine(const PROV_CIPHER *pc) | |
94 | { | |
95 | return pc->engine; | |
96 | } | |
97 | ||
98 | void ossl_prov_digest_reset(PROV_DIGEST *pd) | |
99 | { | |
100 | EVP_MD_free(pd->alloc_md); | |
101 | pd->alloc_md = NULL; | |
102 | pd->md = NULL; | |
103 | pd->engine = NULL; | |
104 | } | |
105 | ||
106 | int ossl_prov_digest_copy(PROV_DIGEST *dst, const PROV_DIGEST *src) | |
107 | { | |
108 | if (src->alloc_md != NULL && !EVP_MD_up_ref(src->alloc_md)) | |
109 | return 0; | |
110 | dst->engine = src->engine; | |
111 | dst->md = src->md; | |
112 | dst->alloc_md = src->alloc_md; | |
113 | return 1; | |
114 | } | |
115 | ||
116 | int ossl_prov_digest_load_from_params(PROV_DIGEST *pd, | |
117 | const OSSL_PARAM params[], | |
118 | OPENSSL_CTX *ctx) | |
119 | { | |
120 | const OSSL_PARAM *p; | |
121 | const char *propquery; | |
122 | ||
123 | if (!load_common(params, &propquery, &pd->engine)) | |
124 | return 0; | |
125 | ||
126 | ||
127 | p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_DIGEST); | |
128 | if (p == NULL) | |
129 | return 1; | |
130 | if (p->data_type != OSSL_PARAM_UTF8_STRING) | |
131 | return 0; | |
132 | ||
133 | EVP_MD_free(pd->alloc_md); | |
134 | pd->md = pd->alloc_md = EVP_MD_fetch(ctx, p->data, propquery); | |
135 | /* TODO legacy stuff, to be removed */ | |
136 | #ifndef FIPS_MODE /* Inside the FIPS module, we don't support legacy digests */ | |
137 | if (pd->md == NULL) | |
138 | pd->md = EVP_get_digestbyname(p->data); | |
139 | #endif | |
140 | return pd->md != NULL; | |
141 | } | |
142 | ||
143 | const EVP_MD *ossl_prov_digest_md(const PROV_DIGEST *pd) | |
144 | { | |
145 | return pd->md; | |
146 | } | |
147 | ||
148 | ENGINE *ossl_prov_digest_engine(const PROV_DIGEST *pd) | |
149 | { | |
150 | return pd->engine; | |
151 | } | |
152 | ||
4e8b8e47 RL |
153 | int ossl_prov_macctx_load_from_params(EVP_MAC_CTX **macctx, |
154 | const OSSL_PARAM params[], | |
155 | const char *macname, | |
156 | const char *ciphername, | |
157 | const char *mdname, | |
158 | OPENSSL_CTX *libctx) | |
159 | { | |
160 | const OSSL_PARAM *p; | |
161 | OSSL_PARAM mac_params[5], *mp = mac_params; | |
162 | const char *properties = NULL; | |
163 | ||
164 | if (macname == NULL | |
165 | && (p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_MAC)) != NULL) { | |
166 | if (p->data_type != OSSL_PARAM_UTF8_STRING) | |
167 | return 0; | |
168 | macname = p->data; | |
169 | } | |
170 | if ((p = OSSL_PARAM_locate_const(params, | |
171 | OSSL_ALG_PARAM_PROPERTIES)) != NULL) { | |
172 | if (p->data_type != OSSL_PARAM_UTF8_STRING) | |
173 | return 0; | |
174 | properties = p->data; | |
175 | } | |
176 | ||
177 | /* If we got a new mac name, we make a new EVP_MAC_CTX */ | |
178 | if (macname != NULL) { | |
179 | EVP_MAC *mac = EVP_MAC_fetch(libctx, macname, properties); | |
180 | ||
181 | EVP_MAC_CTX_free(*macctx); | |
182 | *macctx = mac == NULL ? NULL : EVP_MAC_CTX_new(mac); | |
183 | /* The context holds on to the MAC */ | |
184 | EVP_MAC_free(mac); | |
185 | if (*macctx == NULL) | |
186 | return 0; | |
187 | } | |
188 | ||
189 | /* | |
190 | * If there is no MAC yet (and therefore, no MAC context), we ignore | |
191 | * all other parameters. | |
192 | */ | |
193 | if (*macctx == NULL) | |
194 | return 1; | |
195 | ||
196 | if (mdname == NULL) { | |
197 | if ((p = OSSL_PARAM_locate_const(params, | |
198 | OSSL_ALG_PARAM_DIGEST)) != NULL) { | |
199 | if (p->data_type != OSSL_PARAM_UTF8_STRING) | |
200 | return 0; | |
201 | mdname = p->data; | |
202 | } | |
203 | } | |
204 | if (ciphername == NULL) { | |
205 | if ((p = OSSL_PARAM_locate_const(params, | |
206 | OSSL_ALG_PARAM_CIPHER)) != NULL) { | |
207 | if (p->data_type != OSSL_PARAM_UTF8_STRING) | |
208 | return 0; | |
209 | ciphername = p->data; | |
210 | } | |
211 | } | |
212 | ||
213 | if (mdname != NULL) | |
214 | *mp++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_DIGEST, | |
215 | (char *)mdname, 0); | |
216 | if (ciphername != NULL) | |
217 | *mp++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_DIGEST, | |
218 | (char *)ciphername, 0); | |
219 | if (properties != NULL) | |
220 | *mp++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_PROPERTIES, | |
221 | (char *)properties, 0); | |
222 | ||
223 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE) | |
224 | if ((p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_ENGINE)) != NULL) { | |
225 | if (p->data_type != OSSL_PARAM_UTF8_STRING) | |
226 | return 0; | |
227 | *mp++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_ENGINE, | |
228 | p->data, p->data_size); | |
229 | } | |
230 | #endif | |
231 | *mp = OSSL_PARAM_construct_end(); | |
232 | ||
233 | if (EVP_MAC_CTX_set_params(*macctx, mac_params)) | |
234 | return 1; | |
235 | ||
236 | EVP_MAC_CTX_free(*macctx); | |
237 | *macctx = NULL; | |
238 | return 0; | |
239 | } |