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f3a25707 | 1 | /* |
a28d06f3 | 2 | * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved. |
f3a25707 P |
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 <string.h> | |
363b1e5d | 11 | #include <openssl/core_dispatch.h> |
f3a25707 P |
12 | #include <openssl/e_os2.h> |
13 | #include <openssl/params.h> | |
1f50630a P |
14 | #include <openssl/core_names.h> |
15 | #include <openssl/evp.h> | |
16 | #include <openssl/err.h> | |
17 | #include <openssl/randerr.h> | |
f3a25707 P |
18 | #include "prov/providercommon.h" |
19 | #include "prov/provider_ctx.h" | |
20 | #include "prov/provider_util.h" | |
21 | #include "prov/implementations.h" | |
f3a25707 | 22 | |
1f50630a | 23 | static OSSL_FUNC_rand_newctx_fn test_rng_new; |
363b1e5d | 24 | static OSSL_FUNC_rand_freectx_fn test_rng_free; |
1f50630a P |
25 | static OSSL_FUNC_rand_instantiate_fn test_rng_instantiate; |
26 | static OSSL_FUNC_rand_uninstantiate_fn test_rng_uninstantiate; | |
27 | static OSSL_FUNC_rand_generate_fn test_rng_generate; | |
28 | static OSSL_FUNC_rand_reseed_fn test_rng_reseed; | |
363b1e5d DMSP |
29 | static OSSL_FUNC_rand_nonce_fn test_rng_nonce; |
30 | static OSSL_FUNC_rand_settable_ctx_params_fn test_rng_settable_ctx_params; | |
31 | static OSSL_FUNC_rand_set_ctx_params_fn test_rng_set_ctx_params; | |
32 | static OSSL_FUNC_rand_gettable_ctx_params_fn test_rng_gettable_ctx_params; | |
33 | static OSSL_FUNC_rand_get_ctx_params_fn test_rng_get_ctx_params; | |
34 | static OSSL_FUNC_rand_verify_zeroization_fn test_rng_verify_zeroization; | |
1f50630a P |
35 | static OSSL_FUNC_rand_enable_locking_fn test_rng_enable_locking; |
36 | static OSSL_FUNC_rand_lock_fn test_rng_lock; | |
37 | static OSSL_FUNC_rand_unlock_fn test_rng_unlock; | |
e2730b84 | 38 | static OSSL_FUNC_rand_get_seed_fn test_rng_get_seed; |
f3a25707 P |
39 | |
40 | typedef struct { | |
1f50630a P |
41 | void *provctx; |
42 | int state; | |
43 | unsigned int strength; | |
44 | size_t max_request; | |
f3a25707 P |
45 | unsigned char *entropy, *nonce; |
46 | size_t entropy_len, entropy_pos, nonce_len; | |
1f50630a | 47 | CRYPTO_RWLOCK *lock; |
f3a25707 P |
48 | } PROV_TEST_RNG; |
49 | ||
1f50630a P |
50 | static void *test_rng_new(void *provctx, void *parent, |
51 | const OSSL_DISPATCH *parent_dispatch) | |
f3a25707 P |
52 | { |
53 | PROV_TEST_RNG *t; | |
54 | ||
1f50630a P |
55 | if (parent != NULL) |
56 | return NULL; | |
57 | ||
f3a25707 P |
58 | t = OPENSSL_zalloc(sizeof(*t)); |
59 | if (t == NULL) | |
1f50630a P |
60 | return NULL; |
61 | ||
62 | t->max_request = INT_MAX; | |
63 | t->provctx = provctx; | |
64 | t->state = EVP_RAND_STATE_UNINITIALISED; | |
65 | return t; | |
f3a25707 P |
66 | } |
67 | ||
1f50630a | 68 | static void test_rng_free(void *vtest) |
f3a25707 | 69 | { |
1f50630a | 70 | PROV_TEST_RNG *t = (PROV_TEST_RNG *)vtest; |
f3a25707 | 71 | |
1f50630a P |
72 | if (t == NULL) |
73 | return; | |
f3a25707 P |
74 | OPENSSL_free(t->entropy); |
75 | OPENSSL_free(t->nonce); | |
1f50630a P |
76 | CRYPTO_THREAD_lock_free(t->lock); |
77 | OPENSSL_free(t); | |
f3a25707 P |
78 | } |
79 | ||
1f50630a P |
80 | static int test_rng_instantiate(void *vtest, unsigned int strength, |
81 | int prediction_resistance, | |
f3a25707 P |
82 | const unsigned char *pstr, size_t pstr_len) |
83 | { | |
1f50630a | 84 | PROV_TEST_RNG *t = (PROV_TEST_RNG *)vtest; |
f3a25707 | 85 | |
1f50630a | 86 | if (strength > t->strength) |
f3a25707 P |
87 | return 0; |
88 | ||
1f50630a | 89 | t->state = EVP_RAND_STATE_READY; |
f3a25707 | 90 | t->entropy_pos = 0; |
f3a25707 | 91 | |
1f50630a | 92 | return 1; |
f3a25707 P |
93 | } |
94 | ||
1f50630a | 95 | static int test_rng_uninstantiate(void *vtest) |
f3a25707 | 96 | { |
1f50630a | 97 | PROV_TEST_RNG *t = (PROV_TEST_RNG *)vtest; |
f3a25707 P |
98 | |
99 | t->entropy_pos = 0; | |
15f54941 | 100 | t->state = EVP_RAND_STATE_UNINITIALISED; |
1f50630a | 101 | return 1; |
f3a25707 P |
102 | } |
103 | ||
1f50630a P |
104 | static int test_rng_generate(void *vtest, unsigned char *out, size_t outlen, |
105 | unsigned int strength, int prediction_resistance, | |
f3a25707 P |
106 | const unsigned char *adin, size_t adin_len) |
107 | { | |
1f50630a | 108 | PROV_TEST_RNG *t = (PROV_TEST_RNG *)vtest; |
f3a25707 P |
109 | size_t i; |
110 | ||
1f50630a | 111 | if (strength > t->strength) |
f3a25707 P |
112 | return 0; |
113 | ||
114 | for (i = 0; i < outlen; i++) { | |
115 | out[i] = t->entropy[t->entropy_pos++]; | |
116 | if (t->entropy_pos >= t->entropy_len) | |
117 | break; | |
118 | } | |
119 | return 1; | |
120 | } | |
121 | ||
1f50630a P |
122 | static int test_rng_reseed(ossl_unused void *vtest, |
123 | ossl_unused int prediction_resistance, | |
124 | ossl_unused const unsigned char *ent, | |
125 | ossl_unused size_t ent_len, | |
126 | ossl_unused const unsigned char *adin, | |
127 | ossl_unused size_t adin_len) | |
f3a25707 | 128 | { |
f3a25707 P |
129 | return 1; |
130 | } | |
131 | ||
1f50630a P |
132 | static size_t test_rng_nonce(void *vtest, unsigned char *out, |
133 | unsigned int strength, | |
134 | ossl_unused size_t min_noncelen, | |
135 | ossl_unused size_t max_noncelen) | |
f3a25707 | 136 | { |
1f50630a | 137 | PROV_TEST_RNG *t = (PROV_TEST_RNG *)vtest; |
f3a25707 | 138 | |
1f50630a | 139 | if (t->nonce == NULL || strength > t->strength) |
f3a25707 P |
140 | return 0; |
141 | ||
142 | if (out != NULL) | |
143 | memcpy(out, t->nonce, t->nonce_len); | |
144 | return t->nonce_len; | |
145 | } | |
146 | ||
1f50630a | 147 | static int test_rng_get_ctx_params(void *vtest, OSSL_PARAM params[]) |
f3a25707 | 148 | { |
1f50630a P |
149 | PROV_TEST_RNG *t = (PROV_TEST_RNG *)vtest; |
150 | OSSL_PARAM *p; | |
f3a25707 | 151 | |
1f50630a P |
152 | p = OSSL_PARAM_locate(params, OSSL_RAND_PARAM_STATE); |
153 | if (p != NULL && !OSSL_PARAM_set_int(p, t->state)) | |
154 | return 0; | |
155 | ||
156 | p = OSSL_PARAM_locate(params, OSSL_RAND_PARAM_STRENGTH); | |
157 | if (p != NULL && !OSSL_PARAM_set_int(p, t->strength)) | |
158 | return 0; | |
159 | ||
160 | p = OSSL_PARAM_locate(params, OSSL_RAND_PARAM_MAX_REQUEST); | |
161 | if (p != NULL && !OSSL_PARAM_set_size_t(p, t->max_request)) | |
162 | return 0; | |
163 | return 1; | |
f3a25707 P |
164 | } |
165 | ||
1017ab21 | 166 | static const OSSL_PARAM *test_rng_gettable_ctx_params(ossl_unused void *provctx) |
f3a25707 P |
167 | { |
168 | static const OSSL_PARAM known_gettable_ctx_params[] = { | |
1f50630a P |
169 | OSSL_PARAM_int(OSSL_RAND_PARAM_STATE, NULL), |
170 | OSSL_PARAM_uint(OSSL_RAND_PARAM_STRENGTH, NULL), | |
171 | OSSL_PARAM_size_t(OSSL_RAND_PARAM_MAX_REQUEST, NULL), | |
f3a25707 P |
172 | OSSL_PARAM_END |
173 | }; | |
174 | return known_gettable_ctx_params; | |
175 | } | |
176 | ||
1f50630a | 177 | static int test_rng_set_ctx_params(void *vtest, const OSSL_PARAM params[]) |
f3a25707 | 178 | { |
1f50630a | 179 | PROV_TEST_RNG *t = (PROV_TEST_RNG *)vtest; |
f3a25707 P |
180 | const OSSL_PARAM *p; |
181 | void *ptr = NULL; | |
182 | size_t size = 0; | |
f3a25707 P |
183 | |
184 | p = OSSL_PARAM_locate_const(params, OSSL_RAND_PARAM_STRENGTH); | |
1f50630a | 185 | if (p != NULL && !OSSL_PARAM_get_uint(p, &t->strength)) |
f3a25707 P |
186 | return 0; |
187 | ||
188 | p = OSSL_PARAM_locate_const(params, OSSL_RAND_PARAM_TEST_ENTROPY); | |
189 | if (p != NULL) { | |
190 | if (!OSSL_PARAM_get_octet_string(p, &ptr, 0, &size)) | |
191 | return 0; | |
192 | OPENSSL_free(t->entropy); | |
193 | t->entropy = ptr; | |
194 | t->entropy_len = size; | |
195 | t->entropy_pos = 0; | |
196 | ptr = NULL; | |
197 | } | |
198 | ||
199 | p = OSSL_PARAM_locate_const(params, OSSL_RAND_PARAM_TEST_NONCE); | |
200 | if (p != NULL) { | |
201 | if (!OSSL_PARAM_get_octet_string(p, &ptr, 0, &size)) | |
202 | return 0; | |
203 | OPENSSL_free(t->nonce); | |
204 | t->nonce = ptr; | |
205 | t->nonce_len = size; | |
206 | } | |
207 | ||
1f50630a P |
208 | p = OSSL_PARAM_locate_const(params, OSSL_RAND_PARAM_MAX_REQUEST); |
209 | if (p != NULL && !OSSL_PARAM_get_size_t(p, &t->max_request)) | |
f3a25707 P |
210 | return 0; |
211 | ||
1f50630a | 212 | return 1; |
f3a25707 P |
213 | } |
214 | ||
1017ab21 | 215 | static const OSSL_PARAM *test_rng_settable_ctx_params(ossl_unused void *provctx) |
f3a25707 P |
216 | { |
217 | static const OSSL_PARAM known_settable_ctx_params[] = { | |
218 | OSSL_PARAM_octet_string(OSSL_RAND_PARAM_TEST_ENTROPY, NULL, 0), | |
219 | OSSL_PARAM_octet_string(OSSL_RAND_PARAM_TEST_NONCE, NULL, 0), | |
220 | OSSL_PARAM_uint(OSSL_RAND_PARAM_STRENGTH, NULL), | |
08edd447 | 221 | OSSL_PARAM_size_t(OSSL_RAND_PARAM_MAX_REQUEST, NULL), |
f3a25707 P |
222 | OSSL_PARAM_END |
223 | }; | |
224 | return known_settable_ctx_params; | |
225 | } | |
226 | ||
1f50630a | 227 | static int test_rng_verify_zeroization(ossl_unused void *vtest) |
f3a25707 P |
228 | { |
229 | return 1; | |
230 | } | |
231 | ||
e2730b84 P |
232 | static size_t test_rng_get_seed(void *vtest, unsigned char **pout, |
233 | int entropy, size_t min_len, size_t max_len, | |
234 | ossl_unused int prediction_resistance, | |
235 | ossl_unused const unsigned char *adin, | |
236 | ossl_unused size_t adin_len) | |
237 | { | |
238 | PROV_TEST_RNG *t = (PROV_TEST_RNG *)vtest; | |
239 | ||
240 | *pout = t->entropy; | |
241 | return t->entropy_len > max_len ? max_len : t->entropy_len; | |
242 | } | |
243 | ||
1f50630a | 244 | static int test_rng_enable_locking(void *vtest) |
f000e828 | 245 | { |
1f50630a P |
246 | PROV_TEST_RNG *t = (PROV_TEST_RNG *)vtest; |
247 | ||
248 | if (t != NULL && t->lock == NULL) { | |
249 | t->lock = CRYPTO_THREAD_lock_new(); | |
250 | if (t->lock == NULL) { | |
251 | ERR_raise(ERR_LIB_PROV, RAND_R_FAILED_TO_CREATE_LOCK); | |
252 | return 0; | |
253 | } | |
254 | } | |
255 | return 1; | |
256 | } | |
257 | ||
258 | static int test_rng_lock(void *vtest) | |
259 | { | |
260 | PROV_TEST_RNG *t = (PROV_TEST_RNG *)vtest; | |
261 | ||
262 | if (t == NULL || t->lock == NULL) | |
263 | return 1; | |
264 | return CRYPTO_THREAD_write_lock(t->lock); | |
265 | } | |
266 | ||
267 | static void test_rng_unlock(void *vtest) | |
268 | { | |
269 | PROV_TEST_RNG *t = (PROV_TEST_RNG *)vtest; | |
270 | ||
271 | if (t != NULL && t->lock != NULL) | |
272 | CRYPTO_THREAD_unlock(t->lock); | |
f000e828 P |
273 | } |
274 | ||
1be63951 | 275 | const OSSL_DISPATCH ossl_test_rng_functions[] = { |
1f50630a | 276 | { OSSL_FUNC_RAND_NEWCTX, (void(*)(void))test_rng_new }, |
f3a25707 P |
277 | { OSSL_FUNC_RAND_FREECTX, (void(*)(void))test_rng_free }, |
278 | { OSSL_FUNC_RAND_INSTANTIATE, | |
1f50630a | 279 | (void(*)(void))test_rng_instantiate }, |
f3a25707 | 280 | { OSSL_FUNC_RAND_UNINSTANTIATE, |
1f50630a P |
281 | (void(*)(void))test_rng_uninstantiate }, |
282 | { OSSL_FUNC_RAND_GENERATE, (void(*)(void))test_rng_generate }, | |
283 | { OSSL_FUNC_RAND_RESEED, (void(*)(void))test_rng_reseed }, | |
f3a25707 | 284 | { OSSL_FUNC_RAND_NONCE, (void(*)(void))test_rng_nonce }, |
1f50630a P |
285 | { OSSL_FUNC_RAND_ENABLE_LOCKING, (void(*)(void))test_rng_enable_locking }, |
286 | { OSSL_FUNC_RAND_LOCK, (void(*)(void))test_rng_lock }, | |
287 | { OSSL_FUNC_RAND_UNLOCK, (void(*)(void))test_rng_unlock }, | |
f3a25707 P |
288 | { OSSL_FUNC_RAND_SETTABLE_CTX_PARAMS, |
289 | (void(*)(void))test_rng_settable_ctx_params }, | |
290 | { OSSL_FUNC_RAND_SET_CTX_PARAMS, (void(*)(void))test_rng_set_ctx_params }, | |
291 | { OSSL_FUNC_RAND_GETTABLE_CTX_PARAMS, | |
292 | (void(*)(void))test_rng_gettable_ctx_params }, | |
293 | { OSSL_FUNC_RAND_GET_CTX_PARAMS, (void(*)(void))test_rng_get_ctx_params }, | |
294 | { OSSL_FUNC_RAND_VERIFY_ZEROIZATION, | |
295 | (void(*)(void))test_rng_verify_zeroization }, | |
e2730b84 | 296 | { OSSL_FUNC_RAND_GET_SEED, (void(*)(void))test_rng_get_seed }, |
f3a25707 P |
297 | { 0, NULL } |
298 | }; |