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29be6023 | 1 | /* |
96ebe52e | 2 | * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved. |
29be6023 RL |
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 | ||
c5f87134 P |
10 | /* |
11 | * RSA low level APIs are deprecated for public use, but still ok for | |
12 | * internal use. | |
13 | */ | |
14 | #include "internal/deprecated.h" | |
15 | ||
23c48d94 | 16 | #include <openssl/core_dispatch.h> |
29be6023 RL |
17 | #include <openssl/core_names.h> |
18 | #include <openssl/bn.h> | |
8baa49ae | 19 | #include <openssl/err.h> |
29be6023 | 20 | #include <openssl/rsa.h> |
8baa49ae | 21 | #include <openssl/evp.h> |
29be6023 | 22 | #include "prov/implementations.h" |
1640d48c | 23 | #include "prov/providercommon.h" |
afb638f1 | 24 | #include "prov/provider_ctx.h" |
29be6023 | 25 | #include "crypto/rsa.h" |
1017b8e4 | 26 | #include "crypto/cryptlib.h" |
96ebe52e | 27 | #include "internal/param_build_set.h" |
29be6023 | 28 | |
363b1e5d DMSP |
29 | static OSSL_FUNC_keymgmt_new_fn rsa_newdata; |
30 | static OSSL_FUNC_keymgmt_new_fn rsapss_newdata; | |
31 | static OSSL_FUNC_keymgmt_gen_init_fn rsa_gen_init; | |
32 | static OSSL_FUNC_keymgmt_gen_init_fn rsapss_gen_init; | |
33 | static OSSL_FUNC_keymgmt_gen_set_params_fn rsa_gen_set_params; | |
34 | static OSSL_FUNC_keymgmt_gen_settable_params_fn rsa_gen_settable_params; | |
35 | static OSSL_FUNC_keymgmt_gen_settable_params_fn rsapss_gen_settable_params; | |
36 | static OSSL_FUNC_keymgmt_gen_fn rsa_gen; | |
37 | static OSSL_FUNC_keymgmt_gen_cleanup_fn rsa_gen_cleanup; | |
1017b8e4 | 38 | static OSSL_FUNC_keymgmt_load_fn rsa_load; |
363b1e5d DMSP |
39 | static OSSL_FUNC_keymgmt_free_fn rsa_freedata; |
40 | static OSSL_FUNC_keymgmt_get_params_fn rsa_get_params; | |
41 | static OSSL_FUNC_keymgmt_gettable_params_fn rsa_gettable_params; | |
42 | static OSSL_FUNC_keymgmt_has_fn rsa_has; | |
43 | static OSSL_FUNC_keymgmt_match_fn rsa_match; | |
44 | static OSSL_FUNC_keymgmt_validate_fn rsa_validate; | |
45 | static OSSL_FUNC_keymgmt_import_fn rsa_import; | |
46 | static OSSL_FUNC_keymgmt_import_types_fn rsa_import_types; | |
47 | static OSSL_FUNC_keymgmt_export_fn rsa_export; | |
48 | static OSSL_FUNC_keymgmt_export_types_fn rsa_export_types; | |
80f4fd18 | 49 | static OSSL_FUNC_keymgmt_query_operation_name_fn rsa_query_operation_name; |
29be6023 | 50 | |
8baa49ae | 51 | #define RSA_DEFAULT_MD "SHA256" |
8a758e96 RL |
52 | #define RSA_PSS_DEFAULT_MD OSSL_DIGEST_NAME_SHA1 |
53 | #define RSA_POSSIBLE_SELECTIONS \ | |
8dd5c603 | 54 | (OSSL_KEYMGMT_SELECT_KEYPAIR | OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) |
8baa49ae | 55 | |
29be6023 RL |
56 | DEFINE_STACK_OF(BIGNUM) |
57 | DEFINE_SPECIAL_STACK_OF_CONST(BIGNUM_const, BIGNUM) | |
58 | ||
8a758e96 RL |
59 | static int pss_params_fromdata(RSA_PSS_PARAMS_30 *pss_params, |
60 | const OSSL_PARAM params[], int rsa_type, | |
b4250010 | 61 | OSSL_LIB_CTX *libctx) |
29be6023 | 62 | { |
23b2fc0b | 63 | if (!ossl_rsa_pss_params_30_fromdata(pss_params, params, libctx)) |
8a758e96 | 64 | return 0; |
29be6023 | 65 | |
8a758e96 RL |
66 | /* If not a PSS type RSA, sending us PSS parameters is wrong */ |
67 | if (rsa_type != RSA_FLAG_TYPE_RSASSAPSS | |
23b2fc0b | 68 | && !ossl_rsa_pss_params_30_is_unrestricted(pss_params)) |
8a758e96 | 69 | return 0; |
29be6023 | 70 | |
8a758e96 | 71 | return 1; |
29be6023 RL |
72 | } |
73 | ||
8dd5c603 | 74 | static void *rsa_newdata(void *provctx) |
29be6023 | 75 | { |
a829b735 | 76 | OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx); |
422cbcee | 77 | RSA *rsa; |
8a758e96 | 78 | |
422cbcee P |
79 | if (!ossl_prov_is_running()) |
80 | return NULL; | |
81 | ||
23b2fc0b | 82 | rsa = ossl_rsa_new_with_ctx(libctx); |
8a758e96 RL |
83 | if (rsa != NULL) { |
84 | RSA_clear_flags(rsa, RSA_FLAG_TYPE_MASK); | |
85 | RSA_set_flags(rsa, RSA_FLAG_TYPE_RSA); | |
86 | } | |
87 | return rsa; | |
88 | } | |
89 | ||
90 | static void *rsapss_newdata(void *provctx) | |
91 | { | |
a829b735 | 92 | OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx); |
422cbcee P |
93 | RSA *rsa; |
94 | ||
95 | if (!ossl_prov_is_running()) | |
96 | return NULL; | |
afb638f1 | 97 | |
23b2fc0b | 98 | rsa = ossl_rsa_new_with_ctx(libctx); |
8a758e96 RL |
99 | if (rsa != NULL) { |
100 | RSA_clear_flags(rsa, RSA_FLAG_TYPE_MASK); | |
101 | RSA_set_flags(rsa, RSA_FLAG_TYPE_RSASSAPSS); | |
102 | } | |
103 | return rsa; | |
8dd5c603 | 104 | } |
29be6023 | 105 | |
8dd5c603 RL |
106 | static void rsa_freedata(void *keydata) |
107 | { | |
108 | RSA_free(keydata); | |
29be6023 RL |
109 | } |
110 | ||
3d914185 | 111 | static int rsa_has(const void *keydata, int selection) |
29be6023 | 112 | { |
3d914185 | 113 | const RSA *rsa = keydata; |
8dd5c603 RL |
114 | int ok = 0; |
115 | ||
422cbcee | 116 | if (rsa != NULL && ossl_prov_is_running()) { |
adc9f731 RL |
117 | if ((selection & RSA_POSSIBLE_SELECTIONS) != 0) |
118 | ok = 1; | |
119 | ||
120 | if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0) | |
8a758e96 RL |
121 | /* This will change with OAEP */ |
122 | ok = ok && (RSA_test_flags(rsa, RSA_FLAG_TYPE_RSASSAPSS) != 0); | |
adc9f731 RL |
123 | if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) |
124 | ok = ok && (RSA_get0_e(rsa) != NULL); | |
125 | if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) | |
126 | ok = ok && (RSA_get0_n(rsa) != NULL); | |
127 | if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) | |
128 | ok = ok && (RSA_get0_d(rsa) != NULL); | |
129 | } | |
8dd5c603 RL |
130 | return ok; |
131 | } | |
132 | ||
2888fc15 RL |
133 | static int rsa_match(const void *keydata1, const void *keydata2, int selection) |
134 | { | |
135 | const RSA *rsa1 = keydata1; | |
136 | const RSA *rsa2 = keydata2; | |
137 | int ok = 1; | |
138 | ||
422cbcee P |
139 | if (!ossl_prov_is_running()) |
140 | return 0; | |
141 | ||
2888fc15 RL |
142 | /* There is always an |e| */ |
143 | ok = ok && BN_cmp(RSA_get0_e(rsa1), RSA_get0_e(rsa2)) == 0; | |
144 | if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) | |
145 | ok = ok && BN_cmp(RSA_get0_n(rsa1), RSA_get0_n(rsa2)) == 0; | |
146 | if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) | |
147 | ok = ok && BN_cmp(RSA_get0_d(rsa1), RSA_get0_d(rsa2)) == 0; | |
148 | return ok; | |
149 | } | |
150 | ||
8dd5c603 RL |
151 | static int rsa_import(void *keydata, int selection, const OSSL_PARAM params[]) |
152 | { | |
153 | RSA *rsa = keydata; | |
8a758e96 | 154 | int rsa_type; |
8dd5c603 RL |
155 | int ok = 1; |
156 | ||
422cbcee | 157 | if (!ossl_prov_is_running() || rsa == NULL) |
8dd5c603 RL |
158 | return 0; |
159 | ||
8a758e96 RL |
160 | if ((selection & RSA_POSSIBLE_SELECTIONS) == 0) |
161 | return 0; | |
162 | ||
163 | rsa_type = RSA_test_flags(rsa, RSA_FLAG_TYPE_MASK); | |
164 | ||
165 | /* TODO(3.0) OAEP should bring on parameters as well */ | |
8dd5c603 | 166 | |
8a758e96 | 167 | if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0) |
23b2fc0b P |
168 | ok = ok && pss_params_fromdata(ossl_rsa_get0_pss_params_30(rsa), params, |
169 | rsa_type, ossl_rsa_get0_libctx(rsa)); | |
8dd5c603 | 170 | if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) |
23b2fc0b | 171 | ok = ok && ossl_rsa_fromdata(rsa, params); |
8dd5c603 RL |
172 | |
173 | return ok; | |
174 | } | |
175 | ||
176 | static int rsa_export(void *keydata, int selection, | |
177 | OSSL_CALLBACK *param_callback, void *cbarg) | |
178 | { | |
179 | RSA *rsa = keydata; | |
23b2fc0b | 180 | const RSA_PSS_PARAMS_30 *pss_params = ossl_rsa_get0_pss_params_30(rsa); |
6d4e6009 | 181 | OSSL_PARAM_BLD *tmpl; |
1640d48c | 182 | OSSL_PARAM *params = NULL; |
8dd5c603 RL |
183 | int ok = 1; |
184 | ||
422cbcee | 185 | if (!ossl_prov_is_running() || rsa == NULL) |
8dd5c603 RL |
186 | return 0; |
187 | ||
8a758e96 | 188 | /* TODO(3.0) OAEP should bring on parameters */ |
1640d48c | 189 | |
6d4e6009 P |
190 | tmpl = OSSL_PARAM_BLD_new(); |
191 | if (tmpl == NULL) | |
192 | return 0; | |
8dd5c603 | 193 | |
8a758e96 | 194 | if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0) |
23b2fc0b P |
195 | ok = ok && (ossl_rsa_pss_params_30_is_unrestricted(pss_params) |
196 | || ossl_rsa_pss_params_30_todata(pss_params, tmpl, NULL)); | |
8dd5c603 | 197 | if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) |
23b2fc0b | 198 | ok = ok && ossl_rsa_todata(rsa, tmpl, NULL); |
8dd5c603 RL |
199 | |
200 | if (!ok | |
96ebe52e SL |
201 | || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL) |
202 | goto err; | |
8dd5c603 RL |
203 | |
204 | ok = param_callback(params, cbarg); | |
6d4e6009 | 205 | OSSL_PARAM_BLD_free_params(params); |
96ebe52e SL |
206 | err: |
207 | OSSL_PARAM_BLD_free(tmpl); | |
8dd5c603 | 208 | return ok; |
29be6023 RL |
209 | } |
210 | ||
f844f9eb | 211 | #ifdef FIPS_MODULE |
96ebe52e SL |
212 | /* In fips mode there are no multi-primes. */ |
213 | # define RSA_KEY_MP_TYPES() \ | |
214 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR1, NULL, 0), \ | |
215 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR2, NULL, 0), \ | |
216 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT1, NULL, 0), \ | |
217 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT2, NULL, 0), \ | |
218 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT1, NULL, 0), | |
219 | #else | |
220 | /* | |
221 | * We allow up to 10 prime factors (starting with p, q). | |
222 | * NOTE: there is only 9 OSSL_PKEY_PARAM_RSA_COEFFICIENT | |
223 | */ | |
224 | # define RSA_KEY_MP_TYPES() \ | |
225 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR1, NULL, 0), \ | |
226 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR2, NULL, 0), \ | |
227 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR3, NULL, 0), \ | |
228 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR4, NULL, 0), \ | |
229 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR5, NULL, 0), \ | |
230 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR6, NULL, 0), \ | |
231 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR7, NULL, 0), \ | |
232 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR8, NULL, 0), \ | |
233 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR9, NULL, 0), \ | |
234 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR10, NULL, 0), \ | |
235 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT1, NULL, 0), \ | |
236 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT2, NULL, 0), \ | |
237 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT3, NULL, 0), \ | |
238 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT4, NULL, 0), \ | |
239 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT5, NULL, 0), \ | |
240 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT6, NULL, 0), \ | |
241 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT7, NULL, 0), \ | |
242 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT8, NULL, 0), \ | |
243 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT9, NULL, 0), \ | |
244 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT10, NULL, 0), \ | |
245 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT1, NULL, 0), \ | |
246 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT2, NULL, 0), \ | |
247 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT3, NULL, 0), \ | |
248 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT4, NULL, 0), \ | |
249 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT5, NULL, 0), \ | |
250 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT6, NULL, 0), \ | |
251 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT7, NULL, 0), \ | |
252 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT8, NULL, 0), \ | |
253 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT9, NULL, 0), | |
254 | #endif | |
255 | ||
256 | #define RSA_KEY_TYPES() \ | |
257 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_N, NULL, 0), \ | |
258 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_E, NULL, 0), \ | |
259 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_D, NULL, 0), \ | |
260 | RSA_KEY_MP_TYPES() | |
261 | ||
29be6023 RL |
262 | /* |
263 | * This provider can export everything in an RSA key, so we use the exact | |
264 | * same type description for export as for import. Other providers might | |
265 | * choose to import full keys, but only export the public parts, and will | |
266 | * therefore have the importkey_types and importkey_types functions return | |
267 | * different arrays. | |
268 | */ | |
269 | static const OSSL_PARAM rsa_key_types[] = { | |
96ebe52e SL |
270 | RSA_KEY_TYPES() |
271 | OSSL_PARAM_END | |
29be6023 RL |
272 | }; |
273 | /* | |
274 | * We lied about the amount of factors, exponents and coefficients, the | |
275 | * export and import functions can really deal with an infinite amount | |
276 | * of these numbers. However, RSA keys with too many primes are futile, | |
277 | * so we at least pretend to have some limits. | |
278 | */ | |
279 | ||
273a67e3 | 280 | static const OSSL_PARAM *rsa_imexport_types(int selection) |
29be6023 | 281 | { |
273a67e3 | 282 | if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) |
8dd5c603 RL |
283 | return rsa_key_types; |
284 | return NULL; | |
29be6023 RL |
285 | } |
286 | ||
8dd5c603 | 287 | static const OSSL_PARAM *rsa_import_types(int selection) |
29be6023 | 288 | { |
273a67e3 RL |
289 | return rsa_imexport_types(selection); |
290 | } | |
291 | ||
273a67e3 RL |
292 | static const OSSL_PARAM *rsa_export_types(int selection) |
293 | { | |
294 | return rsa_imexport_types(selection); | |
29be6023 RL |
295 | } |
296 | ||
8dd5c603 | 297 | static int rsa_get_params(void *key, OSSL_PARAM params[]) |
9e5aaf78 RL |
298 | { |
299 | RSA *rsa = key; | |
23b2fc0b | 300 | const RSA_PSS_PARAMS_30 *pss_params = ossl_rsa_get0_pss_params_30(rsa); |
8a758e96 | 301 | int rsa_type = RSA_test_flags(rsa, RSA_FLAG_TYPE_MASK); |
9e5aaf78 RL |
302 | OSSL_PARAM *p; |
303 | ||
304 | if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL | |
305 | && !OSSL_PARAM_set_int(p, RSA_bits(rsa))) | |
306 | return 0; | |
307 | if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL | |
308 | && !OSSL_PARAM_set_int(p, RSA_security_bits(rsa))) | |
309 | return 0; | |
310 | if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL | |
311 | && !OSSL_PARAM_set_int(p, RSA_size(rsa))) | |
312 | return 0; | |
8baa49ae | 313 | |
8a758e96 RL |
314 | /* |
315 | * For RSA-PSS keys, we ignore the default digest request | |
316 | * TODO(3.0) with RSA-OAEP keys, this may need to be amended | |
317 | */ | |
318 | if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DEFAULT_DIGEST)) != NULL | |
319 | && rsa_type != RSA_FLAG_TYPE_RSASSAPSS) { | |
320 | if (!OSSL_PARAM_set_utf8_string(p, RSA_DEFAULT_MD)) | |
321 | return 0; | |
322 | } | |
323 | ||
324 | /* | |
325 | * For non-RSA-PSS keys, we ignore the mandatory digest request | |
326 | * TODO(3.0) with RSA-OAEP keys, this may need to be amended | |
327 | */ | |
8baa49ae RL |
328 | if ((p = OSSL_PARAM_locate(params, |
329 | OSSL_PKEY_PARAM_MANDATORY_DIGEST)) != NULL | |
8a758e96 RL |
330 | && rsa_type == RSA_FLAG_TYPE_RSASSAPSS) { |
331 | const char *mdname = RSA_PSS_DEFAULT_MD; | |
8baa49ae | 332 | |
23b2fc0b | 333 | if (!ossl_rsa_pss_params_30_is_unrestricted(pss_params)) { |
8a758e96 | 334 | mdname = |
23b2fc0b | 335 | ossl_rsa_oaeppss_nid2name(ossl_rsa_pss_params_30_hashalg(pss_params)); |
8a758e96 RL |
336 | |
337 | if (mdname == NULL || !OSSL_PARAM_set_utf8_string(p, mdname)) | |
338 | return 0; | |
8baa49ae | 339 | } |
afb638f1 | 340 | } |
8a758e96 | 341 | return (rsa_type != RSA_FLAG_TYPE_RSASSAPSS |
23b2fc0b P |
342 | || ossl_rsa_pss_params_30_todata(pss_params, NULL, params)) |
343 | && ossl_rsa_todata(rsa, NULL, params); | |
9e5aaf78 RL |
344 | } |
345 | ||
273a67e3 RL |
346 | static const OSSL_PARAM rsa_params[] = { |
347 | OSSL_PARAM_int(OSSL_PKEY_PARAM_BITS, NULL), | |
348 | OSSL_PARAM_int(OSSL_PKEY_PARAM_SECURITY_BITS, NULL), | |
349 | OSSL_PARAM_int(OSSL_PKEY_PARAM_MAX_SIZE, NULL), | |
350 | OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_DEFAULT_DIGEST, NULL, 0), | |
96ebe52e | 351 | RSA_KEY_TYPES() |
273a67e3 RL |
352 | OSSL_PARAM_END |
353 | }; | |
354 | ||
af5e1e85 | 355 | static const OSSL_PARAM *rsa_gettable_params(void *provctx) |
273a67e3 RL |
356 | { |
357 | return rsa_params; | |
358 | } | |
359 | ||
d1fb6b48 | 360 | static int rsa_validate(const void *keydata, int selection) |
12603de6 | 361 | { |
d1fb6b48 | 362 | const RSA *rsa = keydata; |
8dd5c603 RL |
363 | int ok = 0; |
364 | ||
422cbcee P |
365 | if (!ossl_prov_is_running()) |
366 | return 0; | |
367 | ||
8dd5c603 RL |
368 | if ((selection & RSA_POSSIBLE_SELECTIONS) != 0) |
369 | ok = 1; | |
370 | ||
371 | /* If the whole key is selected, we do a pairwise validation */ | |
372 | if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) | |
373 | == OSSL_KEYMGMT_SELECT_KEYPAIR) { | |
23b2fc0b | 374 | ok = ok && ossl_rsa_validate_pairwise(rsa); |
8dd5c603 RL |
375 | } else { |
376 | if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) | |
23b2fc0b | 377 | ok = ok && ossl_rsa_validate_private(rsa); |
8dd5c603 | 378 | if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) |
23b2fc0b | 379 | ok = ok && ossl_rsa_validate_public(rsa); |
8dd5c603 RL |
380 | } |
381 | return ok; | |
12603de6 SL |
382 | } |
383 | ||
2972af10 | 384 | struct rsa_gen_ctx { |
b4250010 | 385 | OSSL_LIB_CTX *libctx; |
719523c7 | 386 | const char *propq; |
2972af10 | 387 | |
8a758e96 RL |
388 | int rsa_type; |
389 | ||
2972af10 RL |
390 | size_t nbits; |
391 | BIGNUM *pub_exp; | |
392 | size_t primes; | |
393 | ||
8a758e96 RL |
394 | /* For PSS */ |
395 | RSA_PSS_PARAMS_30 pss_params; | |
396 | ||
2972af10 RL |
397 | /* For generation callback */ |
398 | OSSL_CALLBACK *cb; | |
399 | void *cbarg; | |
4f2271d5 SL |
400 | |
401 | #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS) | |
402 | /* ACVP test parameters */ | |
403 | OSSL_PARAM *acvp_test_params; | |
404 | #endif | |
2972af10 RL |
405 | }; |
406 | ||
407 | static int rsa_gencb(int p, int n, BN_GENCB *cb) | |
408 | { | |
409 | struct rsa_gen_ctx *gctx = BN_GENCB_get_arg(cb); | |
410 | OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END }; | |
411 | ||
412 | params[0] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_POTENTIAL, &p); | |
413 | params[1] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_ITERATION, &n); | |
2972af10 RL |
414 | return gctx->cb(params, gctx->cbarg); |
415 | } | |
416 | ||
8a758e96 | 417 | static void *gen_init(void *provctx, int selection, int rsa_type) |
2972af10 | 418 | { |
a829b735 | 419 | OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx); |
2972af10 RL |
420 | struct rsa_gen_ctx *gctx = NULL; |
421 | ||
422cbcee P |
422 | if (!ossl_prov_is_running()) |
423 | return NULL; | |
424 | ||
2972af10 RL |
425 | if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0) |
426 | return NULL; | |
427 | ||
428 | if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) { | |
429 | gctx->libctx = libctx; | |
430 | if ((gctx->pub_exp = BN_new()) == NULL | |
431 | || !BN_set_word(gctx->pub_exp, RSA_F4)) { | |
432 | BN_free(gctx->pub_exp); | |
ba61a0e6 | 433 | OPENSSL_free(gctx); |
2972af10 RL |
434 | gctx = NULL; |
435 | } else { | |
436 | gctx->nbits = 2048; | |
437 | gctx->primes = RSA_DEFAULT_PRIME_NUM; | |
4d55122e | 438 | gctx->rsa_type = rsa_type; |
2972af10 RL |
439 | } |
440 | } | |
441 | return gctx; | |
442 | } | |
443 | ||
8a758e96 RL |
444 | static void *rsa_gen_init(void *provctx, int selection) |
445 | { | |
446 | return gen_init(provctx, selection, RSA_FLAG_TYPE_RSA); | |
447 | } | |
448 | ||
449 | static void *rsapss_gen_init(void *provctx, int selection) | |
450 | { | |
451 | return gen_init(provctx, selection, RSA_FLAG_TYPE_RSASSAPSS); | |
452 | } | |
453 | ||
454 | /* | |
455 | * This function is common for all RSA sub-types, to detect possible | |
456 | * misuse, such as PSS parameters being passed when a plain RSA key | |
457 | * is generated. | |
458 | */ | |
2972af10 RL |
459 | static int rsa_gen_set_params(void *genctx, const OSSL_PARAM params[]) |
460 | { | |
461 | struct rsa_gen_ctx *gctx = genctx; | |
462 | const OSSL_PARAM *p; | |
463 | ||
464 | if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_BITS)) != NULL | |
465 | && !OSSL_PARAM_get_size_t(p, &gctx->nbits)) | |
466 | return 0; | |
467 | if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_PRIMES)) != NULL | |
468 | && !OSSL_PARAM_get_size_t(p, &gctx->primes)) | |
469 | return 0; | |
470 | if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_E)) != NULL | |
471 | && !OSSL_PARAM_get_BN(p, &gctx->pub_exp)) | |
472 | return 0; | |
8a758e96 RL |
473 | /* Only attempt to get PSS parameters when generating an RSA-PSS key */ |
474 | if (gctx->rsa_type == RSA_FLAG_TYPE_RSASSAPSS | |
475 | && !pss_params_fromdata(&gctx->pss_params, params, gctx->rsa_type, | |
476 | gctx->libctx)) | |
477 | return 0; | |
4f2271d5 SL |
478 | #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS) |
479 | /* Any ACVP test related parameters are copied into a params[] */ | |
480 | if (!rsa_acvp_test_gen_params_new(&gctx->acvp_test_params, params)) | |
481 | return 0; | |
482 | #endif | |
2972af10 RL |
483 | return 1; |
484 | } | |
485 | ||
8a758e96 RL |
486 | #define rsa_gen_basic \ |
487 | OSSL_PARAM_size_t(OSSL_PKEY_PARAM_RSA_BITS, NULL), \ | |
488 | OSSL_PARAM_size_t(OSSL_PKEY_PARAM_RSA_PRIMES, NULL), \ | |
489 | OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_E, NULL, 0) | |
490 | ||
491 | /* | |
23b2fc0b | 492 | * The following must be kept in sync with ossl_rsa_pss_params_30_fromdata() |
8a758e96 RL |
493 | * in crypto/rsa/rsa_backend.c |
494 | */ | |
495 | #define rsa_gen_pss \ | |
496 | OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_DIGEST, NULL, 0), \ | |
719523c7 | 497 | OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_DIGEST_PROPS, NULL, 0), \ |
8a758e96 RL |
498 | OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_MASKGENFUNC, NULL, 0), \ |
499 | OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_MGF1_DIGEST, NULL, 0), \ | |
500 | OSSL_PARAM_int(OSSL_PKEY_PARAM_RSA_PSS_SALTLEN, NULL) | |
501 | ||
2972af10 RL |
502 | static const OSSL_PARAM *rsa_gen_settable_params(void *provctx) |
503 | { | |
504 | static OSSL_PARAM settable[] = { | |
8a758e96 RL |
505 | rsa_gen_basic, |
506 | OSSL_PARAM_END | |
507 | }; | |
508 | ||
509 | return settable; | |
510 | } | |
511 | ||
512 | static const OSSL_PARAM *rsapss_gen_settable_params(void *provctx) | |
513 | { | |
514 | static OSSL_PARAM settable[] = { | |
515 | rsa_gen_basic, | |
516 | rsa_gen_pss, | |
2972af10 RL |
517 | OSSL_PARAM_END |
518 | }; | |
519 | ||
520 | return settable; | |
521 | } | |
522 | ||
523 | static void *rsa_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg) | |
524 | { | |
525 | struct rsa_gen_ctx *gctx = genctx; | |
8a758e96 | 526 | RSA *rsa = NULL, *rsa_tmp = NULL; |
2972af10 RL |
527 | BN_GENCB *gencb = NULL; |
528 | ||
422cbcee | 529 | if (!ossl_prov_is_running() || gctx == NULL) |
3f17066f P |
530 | return NULL; |
531 | ||
8a758e96 RL |
532 | switch (gctx->rsa_type) { |
533 | case RSA_FLAG_TYPE_RSA: | |
534 | /* For plain RSA keys, PSS parameters must not be set */ | |
23b2fc0b | 535 | if (!ossl_rsa_pss_params_30_is_unrestricted(&gctx->pss_params)) |
8a758e96 RL |
536 | goto err; |
537 | break; | |
538 | case RSA_FLAG_TYPE_RSASSAPSS: | |
539 | /* | |
540 | * For plain RSA-PSS keys, PSS parameters may be set but don't have | |
541 | * to, so not check. | |
542 | */ | |
543 | break; | |
544 | default: | |
545 | /* Unsupported RSA key sub-type... */ | |
546 | return NULL; | |
547 | } | |
548 | ||
23b2fc0b | 549 | if ((rsa_tmp = ossl_rsa_new_with_ctx(gctx->libctx)) == NULL) |
2972af10 RL |
550 | return NULL; |
551 | ||
552 | gctx->cb = osslcb; | |
553 | gctx->cbarg = cbarg; | |
554 | gencb = BN_GENCB_new(); | |
555 | if (gencb != NULL) | |
556 | BN_GENCB_set(gencb, rsa_gencb, genctx); | |
557 | ||
4f2271d5 SL |
558 | #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS) |
559 | if (gctx->acvp_test_params != NULL) { | |
560 | if (!rsa_acvp_test_set_params(rsa_tmp, gctx->acvp_test_params)) | |
561 | goto err; | |
562 | } | |
563 | #endif | |
564 | ||
8a758e96 RL |
565 | if (!RSA_generate_multi_prime_key(rsa_tmp, |
566 | (int)gctx->nbits, (int)gctx->primes, | |
567 | gctx->pub_exp, gencb)) | |
568 | goto err; | |
2972af10 | 569 | |
23b2fc0b P |
570 | if (!ossl_rsa_pss_params_30_copy(ossl_rsa_get0_pss_params_30(rsa_tmp), |
571 | &gctx->pss_params)) | |
8a758e96 | 572 | goto err; |
2972af10 | 573 | |
8a758e96 RL |
574 | RSA_clear_flags(rsa_tmp, RSA_FLAG_TYPE_MASK); |
575 | RSA_set_flags(rsa_tmp, gctx->rsa_type); | |
576 | ||
577 | rsa = rsa_tmp; | |
578 | rsa_tmp = NULL; | |
579 | err: | |
580 | BN_GENCB_free(gencb); | |
581 | RSA_free(rsa_tmp); | |
2972af10 RL |
582 | return rsa; |
583 | } | |
584 | ||
585 | static void rsa_gen_cleanup(void *genctx) | |
586 | { | |
587 | struct rsa_gen_ctx *gctx = genctx; | |
588 | ||
589 | if (gctx == NULL) | |
590 | return; | |
4f2271d5 SL |
591 | #if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS) |
592 | rsa_acvp_test_gen_params_free(gctx->acvp_test_params); | |
593 | gctx->acvp_test_params = NULL; | |
594 | #endif | |
2972af10 RL |
595 | BN_clear_free(gctx->pub_exp); |
596 | OPENSSL_free(gctx); | |
597 | } | |
598 | ||
1017b8e4 RL |
599 | void *rsa_load(const void *reference, size_t reference_sz) |
600 | { | |
601 | RSA *rsa = NULL; | |
602 | ||
422cbcee | 603 | if (ossl_prov_is_running() && reference_sz == sizeof(rsa)) { |
1017b8e4 RL |
604 | /* The contents of the reference is the address to our object */ |
605 | rsa = *(RSA **)reference; | |
606 | /* We grabbed, so we detach it */ | |
607 | *(RSA **)reference = NULL; | |
608 | return rsa; | |
609 | } | |
610 | return NULL; | |
611 | } | |
612 | ||
8a758e96 | 613 | /* For any RSA key, we use the "RSA" algorithms regardless of sub-type. */ |
80f4fd18 | 614 | static const char *rsa_query_operation_name(int operation_id) |
8a758e96 RL |
615 | { |
616 | return "RSA"; | |
617 | } | |
618 | ||
1be63951 | 619 | const OSSL_DISPATCH ossl_rsa_keymgmt_functions[] = { |
8dd5c603 | 620 | { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))rsa_newdata }, |
2972af10 RL |
621 | { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))rsa_gen_init }, |
622 | { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, | |
623 | (void (*)(void))rsa_gen_set_params }, | |
624 | { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS, | |
625 | (void (*)(void))rsa_gen_settable_params }, | |
626 | { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))rsa_gen }, | |
627 | { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))rsa_gen_cleanup }, | |
1017b8e4 | 628 | { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))rsa_load }, |
8dd5c603 | 629 | { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))rsa_freedata }, |
273a67e3 RL |
630 | { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))rsa_get_params }, |
631 | { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))rsa_gettable_params }, | |
8dd5c603 | 632 | { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))rsa_has }, |
2888fc15 | 633 | { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))rsa_match }, |
273a67e3 | 634 | { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))rsa_validate }, |
8dd5c603 RL |
635 | { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))rsa_import }, |
636 | { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))rsa_import_types }, | |
637 | { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))rsa_export }, | |
638 | { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))rsa_export_types }, | |
29be6023 RL |
639 | { 0, NULL } |
640 | }; | |
8a758e96 | 641 | |
1be63951 | 642 | const OSSL_DISPATCH ossl_rsapss_keymgmt_functions[] = { |
8a758e96 RL |
643 | { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))rsapss_newdata }, |
644 | { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))rsapss_gen_init }, | |
645 | { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))rsa_gen_set_params }, | |
646 | { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS, | |
647 | (void (*)(void))rsapss_gen_settable_params }, | |
648 | { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))rsa_gen }, | |
649 | { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))rsa_gen_cleanup }, | |
a4e55ccc | 650 | { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))rsa_load }, |
8a758e96 RL |
651 | { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))rsa_freedata }, |
652 | { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))rsa_get_params }, | |
653 | { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))rsa_gettable_params }, | |
654 | { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))rsa_has }, | |
456b3b97 | 655 | { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))rsa_match }, |
8a758e96 RL |
656 | { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))rsa_validate }, |
657 | { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))rsa_import }, | |
658 | { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))rsa_import_types }, | |
659 | { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))rsa_export }, | |
660 | { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))rsa_export_types }, | |
661 | { OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME, | |
80f4fd18 | 662 | (void (*)(void))rsa_query_operation_name }, |
8a758e96 RL |
663 | { 0, NULL } |
664 | }; |