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source: vbox/trunk/src/libs/openssl-3.0.2/providers/implementations/keymgmt/rsa_kmgmt.c@ 94552

Last change on this file since 94552 was 94404, checked in by vboxsync, 3 years ago

libs/openssl: Update to 3.0.2 and switch to it, bugref:10128
File size: 25.5 KB
Line 
1/*
2 * Copyright 2019-2022 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/*
11 * RSA low level APIs are deprecated for public use, but still ok for
12 * internal use.
13 */
14#include "internal/deprecated.h"
15
16#include <openssl/core_dispatch.h>
17#include <openssl/core_names.h>
18#include <openssl/bn.h>
19#include <openssl/err.h>
20#include <openssl/rsa.h>
21#include <openssl/evp.h>
22#include <openssl/proverr.h>
23#include "prov/implementations.h"
24#include "prov/providercommon.h"
25#include "prov/provider_ctx.h"
26#include "crypto/rsa.h"
27#include "crypto/cryptlib.h"
28#include "internal/param_build_set.h"
29
30static OSSL_FUNC_keymgmt_new_fn rsa_newdata;
31static OSSL_FUNC_keymgmt_new_fn rsapss_newdata;
32static OSSL_FUNC_keymgmt_gen_init_fn rsa_gen_init;
33static OSSL_FUNC_keymgmt_gen_init_fn rsapss_gen_init;
34static OSSL_FUNC_keymgmt_gen_set_params_fn rsa_gen_set_params;
35static OSSL_FUNC_keymgmt_gen_settable_params_fn rsa_gen_settable_params;
36static OSSL_FUNC_keymgmt_gen_settable_params_fn rsapss_gen_settable_params;
37static OSSL_FUNC_keymgmt_gen_fn rsa_gen;
38static OSSL_FUNC_keymgmt_gen_cleanup_fn rsa_gen_cleanup;
39static OSSL_FUNC_keymgmt_load_fn rsa_load;
40static OSSL_FUNC_keymgmt_load_fn rsapss_load;
41static OSSL_FUNC_keymgmt_free_fn rsa_freedata;
42static OSSL_FUNC_keymgmt_get_params_fn rsa_get_params;
43static OSSL_FUNC_keymgmt_gettable_params_fn rsa_gettable_params;
44static OSSL_FUNC_keymgmt_has_fn rsa_has;
45static OSSL_FUNC_keymgmt_match_fn rsa_match;
46static OSSL_FUNC_keymgmt_validate_fn rsa_validate;
47static OSSL_FUNC_keymgmt_import_fn rsa_import;
48static OSSL_FUNC_keymgmt_import_types_fn rsa_import_types;
49static OSSL_FUNC_keymgmt_export_fn rsa_export;
50static OSSL_FUNC_keymgmt_export_types_fn rsa_export_types;
51static OSSL_FUNC_keymgmt_query_operation_name_fn rsa_query_operation_name;
52static OSSL_FUNC_keymgmt_dup_fn rsa_dup;
53
54#define RSA_DEFAULT_MD "SHA256"
55#define RSA_PSS_DEFAULT_MD OSSL_DIGEST_NAME_SHA1
56#define RSA_POSSIBLE_SELECTIONS \
57 (OSSL_KEYMGMT_SELECT_KEYPAIR | OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS)
58
59DEFINE_STACK_OF(BIGNUM)
60DEFINE_SPECIAL_STACK_OF_CONST(BIGNUM_const, BIGNUM)
61
62static int pss_params_fromdata(RSA_PSS_PARAMS_30 *pss_params, int *defaults_set,
63 const OSSL_PARAM params[], int rsa_type,
64 OSSL_LIB_CTX *libctx)
65{
66 if (!ossl_rsa_pss_params_30_fromdata(pss_params, defaults_set,
67 params, libctx))
68 return 0;
69
70 /* If not a PSS type RSA, sending us PSS parameters is wrong */
71 if (rsa_type != RSA_FLAG_TYPE_RSASSAPSS
72 && !ossl_rsa_pss_params_30_is_unrestricted(pss_params))
73 return 0;
74
75 return 1;
76}
77
78static void *rsa_newdata(void *provctx)
79{
80 OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);
81 RSA *rsa;
82
83 if (!ossl_prov_is_running())
84 return NULL;
85
86 rsa = ossl_rsa_new_with_ctx(libctx);
87 if (rsa != NULL) {
88 RSA_clear_flags(rsa, RSA_FLAG_TYPE_MASK);
89 RSA_set_flags(rsa, RSA_FLAG_TYPE_RSA);
90 }
91 return rsa;
92}
93
94static void *rsapss_newdata(void *provctx)
95{
96 OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);
97 RSA *rsa;
98
99 if (!ossl_prov_is_running())
100 return NULL;
101
102 rsa = ossl_rsa_new_with_ctx(libctx);
103 if (rsa != NULL) {
104 RSA_clear_flags(rsa, RSA_FLAG_TYPE_MASK);
105 RSA_set_flags(rsa, RSA_FLAG_TYPE_RSASSAPSS);
106 }
107 return rsa;
108}
109
110static void rsa_freedata(void *keydata)
111{
112 RSA_free(keydata);
113}
114
115static int rsa_has(const void *keydata, int selection)
116{
117 const RSA *rsa = keydata;
118 int ok = 1;
119
120 if (rsa == NULL || !ossl_prov_is_running())
121 return 0;
122 if ((selection & RSA_POSSIBLE_SELECTIONS) == 0)
123 return 1; /* the selection is not missing */
124
125 /* OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS are always available even if empty */
126 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
127 ok = ok && (RSA_get0_e(rsa) != NULL);
128 if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
129 ok = ok && (RSA_get0_n(rsa) != NULL);
130 if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
131 ok = ok && (RSA_get0_d(rsa) != NULL);
132 return ok;
133}
134
135static int rsa_match(const void *keydata1, const void *keydata2, int selection)
136{
137 const RSA *rsa1 = keydata1;
138 const RSA *rsa2 = keydata2;
139 int ok = 1;
140
141 if (!ossl_prov_is_running())
142 return 0;
143
144 /* There is always an |e| */
145 ok = ok && BN_cmp(RSA_get0_e(rsa1), RSA_get0_e(rsa2)) == 0;
146 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
147 int key_checked = 0;
148
149 if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) {
150 const BIGNUM *pa = RSA_get0_n(rsa1);
151 const BIGNUM *pb = RSA_get0_n(rsa2);
152
153 if (pa != NULL && pb != NULL) {
154 ok = ok && BN_cmp(pa, pb) == 0;
155 key_checked = 1;
156 }
157 }
158 if (!key_checked
159 && (selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) {
160 const BIGNUM *pa = RSA_get0_d(rsa1);
161 const BIGNUM *pb = RSA_get0_d(rsa2);
162
163 if (pa != NULL && pb != NULL) {
164 ok = ok && BN_cmp(pa, pb) == 0;
165 key_checked = 1;
166 }
167 }
168 ok = ok && key_checked;
169 }
170 return ok;
171}
172
173static int rsa_import(void *keydata, int selection, const OSSL_PARAM params[])
174{
175 RSA *rsa = keydata;
176 int rsa_type;
177 int ok = 1;
178 int pss_defaults_set = 0;
179
180 if (!ossl_prov_is_running() || rsa == NULL)
181 return 0;
182
183 if ((selection & RSA_POSSIBLE_SELECTIONS) == 0)
184 return 0;
185
186 rsa_type = RSA_test_flags(rsa, RSA_FLAG_TYPE_MASK);
187
188 if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0)
189 ok = ok && pss_params_fromdata(ossl_rsa_get0_pss_params_30(rsa),
190 &pss_defaults_set,
191 params, rsa_type,
192 ossl_rsa_get0_libctx(rsa));
193 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
194 int include_private =
195 selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY ? 1 : 0;
196
197 ok = ok && ossl_rsa_fromdata(rsa, params, include_private);
198 }
199
200 return ok;
201}
202
203static int rsa_export(void *keydata, int selection,
204 OSSL_CALLBACK *param_callback, void *cbarg)
205{
206 RSA *rsa = keydata;
207 const RSA_PSS_PARAMS_30 *pss_params = ossl_rsa_get0_pss_params_30(rsa);
208 OSSL_PARAM_BLD *tmpl;
209 OSSL_PARAM *params = NULL;
210 int ok = 1;
211
212 if (!ossl_prov_is_running() || rsa == NULL)
213 return 0;
214
215 if ((selection & RSA_POSSIBLE_SELECTIONS) == 0)
216 return 0;
217
218 tmpl = OSSL_PARAM_BLD_new();
219 if (tmpl == NULL)
220 return 0;
221
222 if ((selection & OSSL_KEYMGMT_SELECT_OTHER_PARAMETERS) != 0)
223 ok = ok && (ossl_rsa_pss_params_30_is_unrestricted(pss_params)
224 || ossl_rsa_pss_params_30_todata(pss_params, tmpl, NULL));
225 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
226 int include_private =
227 selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY ? 1 : 0;
228
229 ok = ok && ossl_rsa_todata(rsa, tmpl, NULL, include_private);
230 }
231
232 if (!ok
233 || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL)
234 goto err;
235
236 ok = param_callback(params, cbarg);
237 OSSL_PARAM_free(params);
238err:
239 OSSL_PARAM_BLD_free(tmpl);
240 return ok;
241}
242
243#ifdef FIPS_MODULE
244/* In fips mode there are no multi-primes. */
245# define RSA_KEY_MP_TYPES() \
246OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR1, NULL, 0), \
247OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR2, NULL, 0), \
248OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT1, NULL, 0), \
249OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT2, NULL, 0), \
250OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT1, NULL, 0),
251#else
252/*
253 * We allow up to 10 prime factors (starting with p, q).
254 * NOTE: there is only 9 OSSL_PKEY_PARAM_RSA_COEFFICIENT
255 */
256# define RSA_KEY_MP_TYPES() \
257OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR1, NULL, 0), \
258OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR2, NULL, 0), \
259OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR3, NULL, 0), \
260OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR4, NULL, 0), \
261OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR5, NULL, 0), \
262OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR6, NULL, 0), \
263OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR7, NULL, 0), \
264OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR8, NULL, 0), \
265OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR9, NULL, 0), \
266OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_FACTOR10, NULL, 0), \
267OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT1, NULL, 0), \
268OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT2, NULL, 0), \
269OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT3, NULL, 0), \
270OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT4, NULL, 0), \
271OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT5, NULL, 0), \
272OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT6, NULL, 0), \
273OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT7, NULL, 0), \
274OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT8, NULL, 0), \
275OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT9, NULL, 0), \
276OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_EXPONENT10, NULL, 0), \
277OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT1, NULL, 0), \
278OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT2, NULL, 0), \
279OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT3, NULL, 0), \
280OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT4, NULL, 0), \
281OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT5, NULL, 0), \
282OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT6, NULL, 0), \
283OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT7, NULL, 0), \
284OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT8, NULL, 0), \
285OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_COEFFICIENT9, NULL, 0),
286#endif
287
288#define RSA_KEY_TYPES() \
289OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_N, NULL, 0), \
290OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_E, NULL, 0), \
291OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_D, NULL, 0), \
292RSA_KEY_MP_TYPES()
293
294/*
295 * This provider can export everything in an RSA key, so we use the exact
296 * same type description for export as for import. Other providers might
297 * choose to import full keys, but only export the public parts, and will
298 * therefore have the importkey_types and importkey_types functions return
299 * different arrays.
300 */
301static const OSSL_PARAM rsa_key_types[] = {
302 RSA_KEY_TYPES()
303 OSSL_PARAM_END
304};
305/*
306 * We lied about the amount of factors, exponents and coefficients, the
307 * export and import functions can really deal with an infinite amount
308 * of these numbers. However, RSA keys with too many primes are futile,
309 * so we at least pretend to have some limits.
310 */
311
312static const OSSL_PARAM *rsa_imexport_types(int selection)
313{
314 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
315 return rsa_key_types;
316 return NULL;
317}
318
319static const OSSL_PARAM *rsa_import_types(int selection)
320{
321 return rsa_imexport_types(selection);
322}
323
324static const OSSL_PARAM *rsa_export_types(int selection)
325{
326 return rsa_imexport_types(selection);
327}
328
329static int rsa_get_params(void *key, OSSL_PARAM params[])
330{
331 RSA *rsa = key;
332 const RSA_PSS_PARAMS_30 *pss_params = ossl_rsa_get0_pss_params_30(rsa);
333 int rsa_type = RSA_test_flags(rsa, RSA_FLAG_TYPE_MASK);
334 OSSL_PARAM *p;
335 int empty = RSA_get0_n(rsa) == NULL;
336
337 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL
338 && (empty || !OSSL_PARAM_set_int(p, RSA_bits(rsa))))
339 return 0;
340 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL
341 && (empty || !OSSL_PARAM_set_int(p, RSA_security_bits(rsa))))
342 return 0;
343 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL
344 && (empty || !OSSL_PARAM_set_int(p, RSA_size(rsa))))
345 return 0;
346
347 /*
348 * For restricted RSA-PSS keys, we ignore the default digest request.
349 * With RSA-OAEP keys, this may need to be amended.
350 */
351 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DEFAULT_DIGEST)) != NULL
352 && (rsa_type != RSA_FLAG_TYPE_RSASSAPSS
353 || ossl_rsa_pss_params_30_is_unrestricted(pss_params))) {
354 if (!OSSL_PARAM_set_utf8_string(p, RSA_DEFAULT_MD))
355 return 0;
356 }
357
358 /*
359 * For non-RSA-PSS keys, we ignore the mandatory digest request.
360 * With RSA-OAEP keys, this may need to be amended.
361 */
362 if ((p = OSSL_PARAM_locate(params,
363 OSSL_PKEY_PARAM_MANDATORY_DIGEST)) != NULL
364 && rsa_type == RSA_FLAG_TYPE_RSASSAPSS
365 && !ossl_rsa_pss_params_30_is_unrestricted(pss_params)) {
366 const char *mdname =
367 ossl_rsa_oaeppss_nid2name(ossl_rsa_pss_params_30_hashalg(pss_params));
368
369 if (mdname == NULL || !OSSL_PARAM_set_utf8_string(p, mdname))
370 return 0;
371 }
372 return (rsa_type != RSA_FLAG_TYPE_RSASSAPSS
373 || ossl_rsa_pss_params_30_todata(pss_params, NULL, params))
374 && ossl_rsa_todata(rsa, NULL, params, 1);
375}
376
377static const OSSL_PARAM rsa_params[] = {
378 OSSL_PARAM_int(OSSL_PKEY_PARAM_BITS, NULL),
379 OSSL_PARAM_int(OSSL_PKEY_PARAM_SECURITY_BITS, NULL),
380 OSSL_PARAM_int(OSSL_PKEY_PARAM_MAX_SIZE, NULL),
381 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_DEFAULT_DIGEST, NULL, 0),
382 RSA_KEY_TYPES()
383 OSSL_PARAM_END
384};
385
386static const OSSL_PARAM *rsa_gettable_params(void *provctx)
387{
388 return rsa_params;
389}
390
391static int rsa_validate(const void *keydata, int selection, int checktype)
392{
393 const RSA *rsa = keydata;
394 int ok = 1;
395
396 if (!ossl_prov_is_running())
397 return 0;
398
399 if ((selection & RSA_POSSIBLE_SELECTIONS) == 0)
400 return 1; /* nothing to validate */
401
402 /* If the whole key is selected, we do a pairwise validation */
403 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR)
404 == OSSL_KEYMGMT_SELECT_KEYPAIR) {
405 ok = ok && ossl_rsa_validate_pairwise(rsa);
406 } else {
407 if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
408 ok = ok && ossl_rsa_validate_private(rsa);
409 if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
410 ok = ok && ossl_rsa_validate_public(rsa);
411 }
412 return ok;
413}
414
415struct rsa_gen_ctx {
416 OSSL_LIB_CTX *libctx;
417 const char *propq;
418
419 int rsa_type;
420
421 size_t nbits;
422 BIGNUM *pub_exp;
423 size_t primes;
424
425 /* For PSS */
426 RSA_PSS_PARAMS_30 pss_params;
427 int pss_defaults_set;
428
429 /* For generation callback */
430 OSSL_CALLBACK *cb;
431 void *cbarg;
432
433#if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS)
434 /* ACVP test parameters */
435 OSSL_PARAM *acvp_test_params;
436#endif
437};
438
439static int rsa_gencb(int p, int n, BN_GENCB *cb)
440{
441 struct rsa_gen_ctx *gctx = BN_GENCB_get_arg(cb);
442 OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END };
443
444 params[0] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_POTENTIAL, &p);
445 params[1] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_ITERATION, &n);
446 return gctx->cb(params, gctx->cbarg);
447}
448
449static void *gen_init(void *provctx, int selection, int rsa_type,
450 const OSSL_PARAM params[])
451{
452 OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);
453 struct rsa_gen_ctx *gctx = NULL;
454
455 if (!ossl_prov_is_running())
456 return NULL;
457
458 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
459 return NULL;
460
461 if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) {
462 gctx->libctx = libctx;
463 if ((gctx->pub_exp = BN_new()) == NULL
464 || !BN_set_word(gctx->pub_exp, RSA_F4)) {
465 goto err;
466 }
467 gctx->nbits = 2048;
468 gctx->primes = RSA_DEFAULT_PRIME_NUM;
469 gctx->rsa_type = rsa_type;
470 } else {
471 goto err;
472 }
473
474 if (!rsa_gen_set_params(gctx, params))
475 goto err;
476 return gctx;
477
478err:
479 if (gctx != NULL)
480 BN_free(gctx->pub_exp);
481 OPENSSL_free(gctx);
482 return NULL;
483}
484
485static void *rsa_gen_init(void *provctx, int selection,
486 const OSSL_PARAM params[])
487{
488 return gen_init(provctx, selection, RSA_FLAG_TYPE_RSA, params);
489}
490
491static void *rsapss_gen_init(void *provctx, int selection,
492 const OSSL_PARAM params[])
493{
494 return gen_init(provctx, selection, RSA_FLAG_TYPE_RSASSAPSS, params);
495}
496
497/*
498 * This function is common for all RSA sub-types, to detect possible
499 * misuse, such as PSS parameters being passed when a plain RSA key
500 * is generated.
501 */
502static int rsa_gen_set_params(void *genctx, const OSSL_PARAM params[])
503{
504 struct rsa_gen_ctx *gctx = genctx;
505 const OSSL_PARAM *p;
506
507 if (params == NULL)
508 return 1;
509
510 if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_BITS)) != NULL) {
511 if (!OSSL_PARAM_get_size_t(p, &gctx->nbits))
512 return 0;
513 if (gctx->nbits < RSA_MIN_MODULUS_BITS) {
514 ERR_raise(ERR_LIB_PROV, PROV_R_KEY_SIZE_TOO_SMALL);
515 return 0;
516 }
517 }
518 if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_PRIMES)) != NULL
519 && !OSSL_PARAM_get_size_t(p, &gctx->primes))
520 return 0;
521 if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_E)) != NULL
522 && !OSSL_PARAM_get_BN(p, &gctx->pub_exp))
523 return 0;
524 /* Only attempt to get PSS parameters when generating an RSA-PSS key */
525 if (gctx->rsa_type == RSA_FLAG_TYPE_RSASSAPSS
526 && !pss_params_fromdata(&gctx->pss_params, &gctx->pss_defaults_set, params,
527 gctx->rsa_type, gctx->libctx))
528 return 0;
529#if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS)
530 /* Any ACVP test related parameters are copied into a params[] */
531 if (!ossl_rsa_acvp_test_gen_params_new(&gctx->acvp_test_params, params))
532 return 0;
533#endif
534 return 1;
535}
536
537#define rsa_gen_basic \
538 OSSL_PARAM_size_t(OSSL_PKEY_PARAM_RSA_BITS, NULL), \
539 OSSL_PARAM_size_t(OSSL_PKEY_PARAM_RSA_PRIMES, NULL), \
540 OSSL_PARAM_BN(OSSL_PKEY_PARAM_RSA_E, NULL, 0)
541
542/*
543 * The following must be kept in sync with ossl_rsa_pss_params_30_fromdata()
544 * in crypto/rsa/rsa_backend.c
545 */
546#define rsa_gen_pss \
547 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_DIGEST, NULL, 0), \
548 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_DIGEST_PROPS, NULL, 0), \
549 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_MASKGENFUNC, NULL, 0), \
550 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_RSA_MGF1_DIGEST, NULL, 0), \
551 OSSL_PARAM_int(OSSL_PKEY_PARAM_RSA_PSS_SALTLEN, NULL)
552
553static const OSSL_PARAM *rsa_gen_settable_params(ossl_unused void *genctx,
554 ossl_unused void *provctx)
555{
556 static OSSL_PARAM settable[] = {
557 rsa_gen_basic,
558 OSSL_PARAM_END
559 };
560
561 return settable;
562}
563
564static const OSSL_PARAM *rsapss_gen_settable_params(ossl_unused void *genctx,
565 ossl_unused void *provctx)
566{
567 static OSSL_PARAM settable[] = {
568 rsa_gen_basic,
569 rsa_gen_pss,
570 OSSL_PARAM_END
571 };
572
573 return settable;
574}
575
576static void *rsa_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg)
577{
578 struct rsa_gen_ctx *gctx = genctx;
579 RSA *rsa = NULL, *rsa_tmp = NULL;
580 BN_GENCB *gencb = NULL;
581
582 if (!ossl_prov_is_running() || gctx == NULL)
583 return NULL;
584
585 switch (gctx->rsa_type) {
586 case RSA_FLAG_TYPE_RSA:
587 /* For plain RSA keys, PSS parameters must not be set */
588 if (!ossl_rsa_pss_params_30_is_unrestricted(&gctx->pss_params))
589 goto err;
590 break;
591 case RSA_FLAG_TYPE_RSASSAPSS:
592 /*
593 * For plain RSA-PSS keys, PSS parameters may be set but don't have
594 * to, so not check.
595 */
596 break;
597 default:
598 /* Unsupported RSA key sub-type... */
599 return NULL;
600 }
601
602 if ((rsa_tmp = ossl_rsa_new_with_ctx(gctx->libctx)) == NULL)
603 return NULL;
604
605 gctx->cb = osslcb;
606 gctx->cbarg = cbarg;
607 gencb = BN_GENCB_new();
608 if (gencb != NULL)
609 BN_GENCB_set(gencb, rsa_gencb, genctx);
610
611#if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS)
612 if (gctx->acvp_test_params != NULL) {
613 if (!ossl_rsa_acvp_test_set_params(rsa_tmp, gctx->acvp_test_params))
614 goto err;
615 }
616#endif
617
618 if (!RSA_generate_multi_prime_key(rsa_tmp,
619 (int)gctx->nbits, (int)gctx->primes,
620 gctx->pub_exp, gencb))
621 goto err;
622
623 if (!ossl_rsa_pss_params_30_copy(ossl_rsa_get0_pss_params_30(rsa_tmp),
624 &gctx->pss_params))
625 goto err;
626
627 RSA_clear_flags(rsa_tmp, RSA_FLAG_TYPE_MASK);
628 RSA_set_flags(rsa_tmp, gctx->rsa_type);
629
630 rsa = rsa_tmp;
631 rsa_tmp = NULL;
632 err:
633 BN_GENCB_free(gencb);
634 RSA_free(rsa_tmp);
635 return rsa;
636}
637
638static void rsa_gen_cleanup(void *genctx)
639{
640 struct rsa_gen_ctx *gctx = genctx;
641
642 if (gctx == NULL)
643 return;
644#if defined(FIPS_MODULE) && !defined(OPENSSL_NO_ACVP_TESTS)
645 ossl_rsa_acvp_test_gen_params_free(gctx->acvp_test_params);
646 gctx->acvp_test_params = NULL;
647#endif
648 BN_clear_free(gctx->pub_exp);
649 OPENSSL_free(gctx);
650}
651
652static void *common_load(const void *reference, size_t reference_sz,
653 int expected_rsa_type)
654{
655 RSA *rsa = NULL;
656
657 if (ossl_prov_is_running() && reference_sz == sizeof(rsa)) {
658 /* The contents of the reference is the address to our object */
659 rsa = *(RSA **)reference;
660
661 if (RSA_test_flags(rsa, RSA_FLAG_TYPE_MASK) != expected_rsa_type)
662 return NULL;
663
664 /* We grabbed, so we detach it */
665 *(RSA **)reference = NULL;
666 return rsa;
667 }
668 return NULL;
669}
670
671static void *rsa_load(const void *reference, size_t reference_sz)
672{
673 return common_load(reference, reference_sz, RSA_FLAG_TYPE_RSA);
674}
675
676static void *rsapss_load(const void *reference, size_t reference_sz)
677{
678 return common_load(reference, reference_sz, RSA_FLAG_TYPE_RSASSAPSS);
679}
680
681static void *rsa_dup(const void *keydata_from, int selection)
682{
683 if (ossl_prov_is_running()
684 /* do not allow creating empty keys by duplication */
685 && (selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
686 return ossl_rsa_dup(keydata_from, selection);
687 return NULL;
688}
689
690/* For any RSA key, we use the "RSA" algorithms regardless of sub-type. */
691static const char *rsa_query_operation_name(int operation_id)
692{
693 return "RSA";
694}
695
696const OSSL_DISPATCH ossl_rsa_keymgmt_functions[] = {
697 { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))rsa_newdata },
698 { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))rsa_gen_init },
699 { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS,
700 (void (*)(void))rsa_gen_set_params },
701 { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
702 (void (*)(void))rsa_gen_settable_params },
703 { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))rsa_gen },
704 { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))rsa_gen_cleanup },
705 { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))rsa_load },
706 { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))rsa_freedata },
707 { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))rsa_get_params },
708 { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))rsa_gettable_params },
709 { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))rsa_has },
710 { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))rsa_match },
711 { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))rsa_validate },
712 { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))rsa_import },
713 { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))rsa_import_types },
714 { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))rsa_export },
715 { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))rsa_export_types },
716 { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))rsa_dup },
717 { 0, NULL }
718};
719
720const OSSL_DISPATCH ossl_rsapss_keymgmt_functions[] = {
721 { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))rsapss_newdata },
722 { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))rsapss_gen_init },
723 { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))rsa_gen_set_params },
724 { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
725 (void (*)(void))rsapss_gen_settable_params },
726 { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))rsa_gen },
727 { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))rsa_gen_cleanup },
728 { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))rsapss_load },
729 { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))rsa_freedata },
730 { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))rsa_get_params },
731 { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))rsa_gettable_params },
732 { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))rsa_has },
733 { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))rsa_match },
734 { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))rsa_validate },
735 { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))rsa_import },
736 { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))rsa_import_types },
737 { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))rsa_export },
738 { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))rsa_export_types },
739 { OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME,
740 (void (*)(void))rsa_query_operation_name },
741 { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))rsa_dup },
742 { 0, NULL }
743};
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