/src/openssl/providers/implementations/keymgmt/dsa_kmgmt.c
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1 | | /* |
2 | | * Copyright 2019-2023 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 | | * DSA 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 "prov/providercommon.h" |
21 | | #include "prov/implementations.h" |
22 | | #include "prov/provider_ctx.h" |
23 | | #include "crypto/dsa.h" |
24 | | #include "internal/sizes.h" |
25 | | #include "internal/nelem.h" |
26 | | #include "internal/param_build_set.h" |
27 | | |
28 | | static OSSL_FUNC_keymgmt_new_fn dsa_newdata; |
29 | | static OSSL_FUNC_keymgmt_free_fn dsa_freedata; |
30 | | static OSSL_FUNC_keymgmt_gen_init_fn dsa_gen_init; |
31 | | static OSSL_FUNC_keymgmt_gen_set_template_fn dsa_gen_set_template; |
32 | | static OSSL_FUNC_keymgmt_gen_set_params_fn dsa_gen_set_params; |
33 | | static OSSL_FUNC_keymgmt_gen_settable_params_fn dsa_gen_settable_params; |
34 | | static OSSL_FUNC_keymgmt_gen_fn dsa_gen; |
35 | | static OSSL_FUNC_keymgmt_gen_cleanup_fn dsa_gen_cleanup; |
36 | | static OSSL_FUNC_keymgmt_load_fn dsa_load; |
37 | | static OSSL_FUNC_keymgmt_get_params_fn dsa_get_params; |
38 | | static OSSL_FUNC_keymgmt_gettable_params_fn dsa_gettable_params; |
39 | | static OSSL_FUNC_keymgmt_has_fn dsa_has; |
40 | | static OSSL_FUNC_keymgmt_match_fn dsa_match; |
41 | | static OSSL_FUNC_keymgmt_validate_fn dsa_validate; |
42 | | static OSSL_FUNC_keymgmt_import_fn dsa_import; |
43 | | static OSSL_FUNC_keymgmt_import_types_fn dsa_import_types; |
44 | | static OSSL_FUNC_keymgmt_export_fn dsa_export; |
45 | | static OSSL_FUNC_keymgmt_export_types_fn dsa_export_types; |
46 | | static OSSL_FUNC_keymgmt_dup_fn dsa_dup; |
47 | | |
48 | 0 | #define DSA_DEFAULT_MD "SHA256" |
49 | | #define DSA_POSSIBLE_SELECTIONS \ |
50 | 2.22k | (OSSL_KEYMGMT_SELECT_KEYPAIR | OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) |
51 | | |
52 | | struct dsa_gen_ctx { |
53 | | OSSL_LIB_CTX *libctx; |
54 | | |
55 | | FFC_PARAMS *ffc_params; |
56 | | int selection; |
57 | | /* All these parameters are used for parameter generation only */ |
58 | | size_t pbits; |
59 | | size_t qbits; |
60 | | unsigned char *seed; /* optional FIPS186-4 param for testing */ |
61 | | size_t seedlen; |
62 | | int gindex; /* optional FIPS186-4 generator index (ignored if -1) */ |
63 | | int gen_type; /* DSA_PARAMGEN_TYPE_FIPS_186_2 or DSA_PARAMGEN_TYPE_FIPS_186_4 */ |
64 | | int pcounter; |
65 | | int hindex; |
66 | | char *mdname; |
67 | | char *mdprops; |
68 | | OSSL_CALLBACK *cb; |
69 | | void *cbarg; |
70 | | }; |
71 | | typedef struct dh_name2id_st{ |
72 | | const char *name; |
73 | | int id; |
74 | | } DSA_GENTYPE_NAME2ID; |
75 | | |
76 | | static const DSA_GENTYPE_NAME2ID dsatype2id[] = { |
77 | | #ifdef FIPS_MODULE |
78 | | { "default", DSA_PARAMGEN_TYPE_FIPS_186_4 }, |
79 | | #else |
80 | | { "default", DSA_PARAMGEN_TYPE_FIPS_DEFAULT }, |
81 | | #endif |
82 | | { "fips186_4", DSA_PARAMGEN_TYPE_FIPS_186_4 }, |
83 | | { "fips186_2", DSA_PARAMGEN_TYPE_FIPS_186_2 }, |
84 | | }; |
85 | | |
86 | | static int dsa_gen_type_name2id(const char *name) |
87 | 0 | { |
88 | 0 | size_t i; |
89 | |
|
90 | 0 | for (i = 0; i < OSSL_NELEM(dsatype2id); ++i) { |
91 | 0 | if (OPENSSL_strcasecmp(dsatype2id[i].name, name) == 0) |
92 | 0 | return dsatype2id[i].id; |
93 | 0 | } |
94 | 0 | return -1; |
95 | 0 | } |
96 | | |
97 | | static int dsa_key_todata(DSA *dsa, OSSL_PARAM_BLD *bld, OSSL_PARAM params[], |
98 | | int include_private) |
99 | 846 | { |
100 | 846 | const BIGNUM *priv = NULL, *pub = NULL; |
101 | | |
102 | 846 | if (dsa == NULL) |
103 | 0 | return 0; |
104 | | |
105 | 846 | DSA_get0_key(dsa, &pub, &priv); |
106 | 846 | if (include_private |
107 | 846 | && priv != NULL |
108 | 846 | && !ossl_param_build_set_bn(bld, params, OSSL_PKEY_PARAM_PRIV_KEY, priv)) |
109 | 0 | return 0; |
110 | 846 | if (pub != NULL |
111 | 846 | && !ossl_param_build_set_bn(bld, params, OSSL_PKEY_PARAM_PUB_KEY, pub)) |
112 | 0 | return 0; |
113 | | |
114 | 846 | return 1; |
115 | 846 | } |
116 | | |
117 | | static void *dsa_newdata(void *provctx) |
118 | 0 | { |
119 | 0 | if (!ossl_prov_is_running()) |
120 | 0 | return NULL; |
121 | 0 | return ossl_dsa_new(PROV_LIBCTX_OF(provctx)); |
122 | 0 | } |
123 | | |
124 | | static void dsa_freedata(void *keydata) |
125 | 846 | { |
126 | 846 | DSA_free(keydata); |
127 | 846 | } |
128 | | |
129 | | static int dsa_has(const void *keydata, int selection) |
130 | 846 | { |
131 | 846 | const DSA *dsa = keydata; |
132 | 846 | int ok = 1; |
133 | | |
134 | 846 | if (!ossl_prov_is_running() || dsa == NULL) |
135 | 0 | return 0; |
136 | 846 | if ((selection & DSA_POSSIBLE_SELECTIONS) == 0) |
137 | 0 | return 1; /* the selection is not missing */ |
138 | | |
139 | 846 | if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) |
140 | 846 | ok = ok && (DSA_get0_pub_key(dsa) != NULL); |
141 | 846 | if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) |
142 | 0 | ok = ok && (DSA_get0_priv_key(dsa) != NULL); |
143 | 846 | if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0) |
144 | 0 | ok = ok && (DSA_get0_p(dsa) != NULL && DSA_get0_g(dsa) != NULL); |
145 | 846 | return ok; |
146 | 846 | } |
147 | | |
148 | | static int dsa_match(const void *keydata1, const void *keydata2, int selection) |
149 | 423 | { |
150 | 423 | const DSA *dsa1 = keydata1; |
151 | 423 | const DSA *dsa2 = keydata2; |
152 | 423 | int ok = 1; |
153 | | |
154 | 423 | if (!ossl_prov_is_running()) |
155 | 0 | return 0; |
156 | | |
157 | 423 | if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) { |
158 | 423 | int key_checked = 0; |
159 | | |
160 | 423 | if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) { |
161 | 423 | const BIGNUM *pa = DSA_get0_pub_key(dsa1); |
162 | 423 | const BIGNUM *pb = DSA_get0_pub_key(dsa2); |
163 | | |
164 | 423 | if (pa != NULL && pb != NULL) { |
165 | 423 | ok = ok && BN_cmp(pa, pb) == 0; |
166 | 423 | key_checked = 1; |
167 | 423 | } |
168 | 423 | } |
169 | 423 | if (!key_checked |
170 | 423 | && (selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) { |
171 | 0 | const BIGNUM *pa = DSA_get0_priv_key(dsa1); |
172 | 0 | const BIGNUM *pb = DSA_get0_priv_key(dsa2); |
173 | |
|
174 | 0 | if (pa != NULL && pb != NULL) { |
175 | 0 | ok = ok && BN_cmp(pa, pb) == 0; |
176 | 0 | key_checked = 1; |
177 | 0 | } |
178 | 0 | } |
179 | 423 | ok = ok && key_checked; |
180 | 423 | } |
181 | 423 | if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0) { |
182 | 423 | FFC_PARAMS *dsaparams1 = ossl_dsa_get0_params((DSA *)dsa1); |
183 | 423 | FFC_PARAMS *dsaparams2 = ossl_dsa_get0_params((DSA *)dsa2); |
184 | | |
185 | 423 | ok = ok && ossl_ffc_params_cmp(dsaparams1, dsaparams2, 1); |
186 | 423 | } |
187 | 423 | return ok; |
188 | 423 | } |
189 | | |
190 | | static int dsa_import(void *keydata, int selection, const OSSL_PARAM params[]) |
191 | 0 | { |
192 | 0 | DSA *dsa = keydata; |
193 | 0 | int ok = 1; |
194 | |
|
195 | 0 | if (!ossl_prov_is_running() || dsa == NULL) |
196 | 0 | return 0; |
197 | | |
198 | 0 | if ((selection & DSA_POSSIBLE_SELECTIONS) == 0) |
199 | 0 | return 0; |
200 | | |
201 | | /* a key without parameters is meaningless */ |
202 | 0 | ok = ok && ossl_dsa_ffc_params_fromdata(dsa, params); |
203 | |
|
204 | 0 | if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) { |
205 | 0 | int include_private = |
206 | 0 | selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY ? 1 : 0; |
207 | |
|
208 | 0 | ok = ok && ossl_dsa_key_fromdata(dsa, params, include_private); |
209 | 0 | } |
210 | |
|
211 | 0 | return ok; |
212 | 0 | } |
213 | | |
214 | | static int dsa_export(void *keydata, int selection, OSSL_CALLBACK *param_cb, |
215 | | void *cbarg) |
216 | 0 | { |
217 | 0 | DSA *dsa = keydata; |
218 | 0 | OSSL_PARAM_BLD *tmpl; |
219 | 0 | OSSL_PARAM *params = NULL; |
220 | 0 | int ok = 1; |
221 | |
|
222 | 0 | if (!ossl_prov_is_running() || dsa == NULL) |
223 | 0 | return 0; |
224 | | |
225 | 0 | if ((selection & DSA_POSSIBLE_SELECTIONS) == 0) |
226 | 0 | return 0; |
227 | | |
228 | 0 | tmpl = OSSL_PARAM_BLD_new(); |
229 | 0 | if (tmpl == NULL) |
230 | 0 | return 0; |
231 | | |
232 | 0 | if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0) |
233 | 0 | ok = ok && ossl_ffc_params_todata(ossl_dsa_get0_params(dsa), tmpl, NULL); |
234 | 0 | if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) { |
235 | 0 | int include_private = |
236 | 0 | selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY ? 1 : 0; |
237 | |
|
238 | 0 | ok = ok && dsa_key_todata(dsa, tmpl, NULL, include_private); |
239 | 0 | } |
240 | |
|
241 | 0 | if (!ok || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL) { |
242 | 0 | ok = 0; |
243 | 0 | goto err; |
244 | 0 | } |
245 | | |
246 | 0 | ok = param_cb(params, cbarg); |
247 | 0 | OSSL_PARAM_free(params); |
248 | 0 | err: |
249 | 0 | OSSL_PARAM_BLD_free(tmpl); |
250 | 0 | return ok; |
251 | 0 | } |
252 | | |
253 | | /* IMEXPORT = IMPORT + EXPORT */ |
254 | | |
255 | | # define DSA_IMEXPORTABLE_PARAMETERS \ |
256 | | OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_P, NULL, 0), \ |
257 | | OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_Q, NULL, 0), \ |
258 | | OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_G, NULL, 0), \ |
259 | | OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_COFACTOR, NULL, 0), \ |
260 | | OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_GINDEX, NULL), \ |
261 | | OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_PCOUNTER, NULL), \ |
262 | | OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_H, NULL), \ |
263 | | OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_FFC_SEED, NULL, 0) |
264 | | # define DSA_IMEXPORTABLE_PUBLIC_KEY \ |
265 | | OSSL_PARAM_BN(OSSL_PKEY_PARAM_PUB_KEY, NULL, 0) |
266 | | # define DSA_IMEXPORTABLE_PRIVATE_KEY \ |
267 | | OSSL_PARAM_BN(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0) |
268 | | static const OSSL_PARAM dsa_all_types[] = { |
269 | | DSA_IMEXPORTABLE_PARAMETERS, |
270 | | DSA_IMEXPORTABLE_PUBLIC_KEY, |
271 | | DSA_IMEXPORTABLE_PRIVATE_KEY, |
272 | | OSSL_PARAM_END |
273 | | }; |
274 | | static const OSSL_PARAM dsa_parameter_types[] = { |
275 | | DSA_IMEXPORTABLE_PARAMETERS, |
276 | | OSSL_PARAM_END |
277 | | }; |
278 | | static const OSSL_PARAM dsa_key_types[] = { |
279 | | DSA_IMEXPORTABLE_PUBLIC_KEY, |
280 | | DSA_IMEXPORTABLE_PRIVATE_KEY, |
281 | | OSSL_PARAM_END |
282 | | }; |
283 | | static const OSSL_PARAM *dsa_types[] = { |
284 | | NULL, /* Index 0 = none of them */ |
285 | | dsa_parameter_types, /* Index 1 = parameter types */ |
286 | | dsa_key_types, /* Index 2 = key types */ |
287 | | dsa_all_types /* Index 3 = 1 + 2 */ |
288 | | }; |
289 | | |
290 | | static const OSSL_PARAM *dsa_imexport_types(int selection) |
291 | 0 | { |
292 | 0 | int type_select = 0; |
293 | |
|
294 | 0 | if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0) |
295 | 0 | type_select += 1; |
296 | 0 | if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) |
297 | 0 | type_select += 2; |
298 | 0 | return dsa_types[type_select]; |
299 | 0 | } |
300 | | |
301 | | static const OSSL_PARAM *dsa_import_types(int selection) |
302 | 0 | { |
303 | 0 | return dsa_imexport_types(selection); |
304 | 0 | } |
305 | | |
306 | | static const OSSL_PARAM *dsa_export_types(int selection) |
307 | 0 | { |
308 | 0 | return dsa_imexport_types(selection); |
309 | 0 | } |
310 | | |
311 | | static ossl_inline int dsa_get_params(void *key, OSSL_PARAM params[]) |
312 | 846 | { |
313 | 846 | DSA *dsa = key; |
314 | 846 | OSSL_PARAM *p; |
315 | | |
316 | 846 | if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL |
317 | 846 | && !OSSL_PARAM_set_int(p, DSA_bits(dsa))) |
318 | 0 | return 0; |
319 | 846 | if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL |
320 | 846 | && !OSSL_PARAM_set_int(p, DSA_security_bits(dsa))) |
321 | 0 | return 0; |
322 | 846 | if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL |
323 | 846 | && !OSSL_PARAM_set_int(p, DSA_size(dsa))) |
324 | 0 | return 0; |
325 | 846 | if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DEFAULT_DIGEST)) != NULL |
326 | 846 | && !OSSL_PARAM_set_utf8_string(p, DSA_DEFAULT_MD)) |
327 | 0 | return 0; |
328 | 846 | return ossl_ffc_params_todata(ossl_dsa_get0_params(dsa), NULL, params) |
329 | 846 | && dsa_key_todata(dsa, NULL, params, 1); |
330 | 846 | } |
331 | | |
332 | | static const OSSL_PARAM dsa_params[] = { |
333 | | OSSL_PARAM_int(OSSL_PKEY_PARAM_BITS, NULL), |
334 | | OSSL_PARAM_int(OSSL_PKEY_PARAM_SECURITY_BITS, NULL), |
335 | | OSSL_PARAM_int(OSSL_PKEY_PARAM_MAX_SIZE, NULL), |
336 | | OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_DEFAULT_DIGEST, NULL, 0), |
337 | | DSA_IMEXPORTABLE_PARAMETERS, |
338 | | DSA_IMEXPORTABLE_PUBLIC_KEY, |
339 | | DSA_IMEXPORTABLE_PRIVATE_KEY, |
340 | | OSSL_PARAM_END |
341 | | }; |
342 | | |
343 | | static const OSSL_PARAM *dsa_gettable_params(void *provctx) |
344 | 0 | { |
345 | 0 | return dsa_params; |
346 | 0 | } |
347 | | |
348 | | static int dsa_validate_domparams(const DSA *dsa, int checktype) |
349 | 423 | { |
350 | 423 | int status = 0; |
351 | | |
352 | 423 | return ossl_dsa_check_params(dsa, checktype, &status); |
353 | 423 | } |
354 | | |
355 | | static int dsa_validate_public(const DSA *dsa) |
356 | 689 | { |
357 | 689 | int status = 0; |
358 | 689 | const BIGNUM *pub_key = NULL; |
359 | | |
360 | 689 | DSA_get0_key(dsa, &pub_key, NULL); |
361 | 689 | if (pub_key == NULL) |
362 | 0 | return 0; |
363 | 689 | return ossl_dsa_check_pub_key(dsa, pub_key, &status); |
364 | 689 | } |
365 | | |
366 | | static int dsa_validate_private(const DSA *dsa) |
367 | 315 | { |
368 | 315 | int status = 0; |
369 | 315 | const BIGNUM *priv_key = NULL; |
370 | | |
371 | 315 | DSA_get0_key(dsa, NULL, &priv_key); |
372 | 315 | if (priv_key == NULL) |
373 | 10 | return 0; |
374 | 305 | return ossl_dsa_check_priv_key(dsa, priv_key, &status); |
375 | 315 | } |
376 | | |
377 | | static int dsa_validate(const void *keydata, int selection, int checktype) |
378 | 1.37k | { |
379 | 1.37k | const DSA *dsa = keydata; |
380 | 1.37k | int ok = 1; |
381 | | |
382 | 1.37k | if (!ossl_prov_is_running()) |
383 | 0 | return 0; |
384 | | |
385 | 1.37k | if ((selection & DSA_POSSIBLE_SELECTIONS) == 0) |
386 | 0 | return 1; /* nothing to validate */ |
387 | | |
388 | 1.37k | if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0) |
389 | 423 | ok = ok && dsa_validate_domparams(dsa, checktype); |
390 | | |
391 | 1.37k | if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) |
392 | 689 | ok = ok && dsa_validate_public(dsa); |
393 | | |
394 | 1.37k | if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) |
395 | 532 | ok = ok && dsa_validate_private(dsa); |
396 | | |
397 | | /* If the whole key is selected, we do a pairwise validation */ |
398 | 1.37k | if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) |
399 | 1.37k | == OSSL_KEYMGMT_SELECT_KEYPAIR) |
400 | 266 | ok = ok && ossl_dsa_check_pairwise(dsa); |
401 | 1.37k | return ok; |
402 | 1.37k | } |
403 | | |
404 | | static void *dsa_gen_init(void *provctx, int selection, |
405 | | const OSSL_PARAM params[]) |
406 | 0 | { |
407 | 0 | OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx); |
408 | 0 | struct dsa_gen_ctx *gctx = NULL; |
409 | |
|
410 | 0 | if (!ossl_prov_is_running() || (selection & DSA_POSSIBLE_SELECTIONS) == 0) |
411 | 0 | return NULL; |
412 | | |
413 | 0 | if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) { |
414 | 0 | gctx->selection = selection; |
415 | 0 | gctx->libctx = libctx; |
416 | 0 | gctx->pbits = 2048; |
417 | 0 | gctx->qbits = 224; |
418 | | #ifdef FIPS_MODULE |
419 | | gctx->gen_type = DSA_PARAMGEN_TYPE_FIPS_186_4; |
420 | | #else |
421 | 0 | gctx->gen_type = DSA_PARAMGEN_TYPE_FIPS_DEFAULT; |
422 | 0 | #endif |
423 | 0 | gctx->gindex = -1; |
424 | 0 | gctx->pcounter = -1; |
425 | 0 | gctx->hindex = 0; |
426 | 0 | } |
427 | 0 | if (!dsa_gen_set_params(gctx, params)) { |
428 | 0 | OPENSSL_free(gctx); |
429 | 0 | gctx = NULL; |
430 | 0 | } |
431 | 0 | return gctx; |
432 | 0 | } |
433 | | |
434 | | static int dsa_gen_set_template(void *genctx, void *templ) |
435 | 0 | { |
436 | 0 | struct dsa_gen_ctx *gctx = genctx; |
437 | 0 | DSA *dsa = templ; |
438 | |
|
439 | 0 | if (!ossl_prov_is_running() || gctx == NULL || dsa == NULL) |
440 | 0 | return 0; |
441 | 0 | gctx->ffc_params = ossl_dsa_get0_params(dsa); |
442 | 0 | return 1; |
443 | 0 | } |
444 | | |
445 | | static int dsa_set_gen_seed(struct dsa_gen_ctx *gctx, unsigned char *seed, |
446 | | size_t seedlen) |
447 | 0 | { |
448 | 0 | OPENSSL_clear_free(gctx->seed, gctx->seedlen); |
449 | 0 | gctx->seed = NULL; |
450 | 0 | gctx->seedlen = 0; |
451 | 0 | if (seed != NULL && seedlen > 0) { |
452 | 0 | gctx->seed = OPENSSL_memdup(seed, seedlen); |
453 | 0 | if (gctx->seed == NULL) |
454 | 0 | return 0; |
455 | 0 | gctx->seedlen = seedlen; |
456 | 0 | } |
457 | 0 | return 1; |
458 | 0 | } |
459 | | |
460 | | static int dsa_gen_set_params(void *genctx, const OSSL_PARAM params[]) |
461 | 0 | { |
462 | 0 | struct dsa_gen_ctx *gctx = genctx; |
463 | 0 | const OSSL_PARAM *p; |
464 | 0 | int gen_type = -1; |
465 | |
|
466 | 0 | if (gctx == NULL) |
467 | 0 | return 0; |
468 | 0 | if (params == NULL) |
469 | 0 | return 1; |
470 | | |
471 | | |
472 | 0 | p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_TYPE); |
473 | 0 | if (p != NULL) { |
474 | 0 | if (p->data_type != OSSL_PARAM_UTF8_STRING |
475 | 0 | || ((gen_type = dsa_gen_type_name2id(p->data)) == -1)) { |
476 | 0 | ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT); |
477 | 0 | return 0; |
478 | 0 | } |
479 | | |
480 | | /* |
481 | | * Only assign context gen_type if it was set by dsa_gen_type_name2id |
482 | | * must be in range: |
483 | | * DSA_PARAMGEN_TYPE_FIPS_186_4 <= gen_type <= DSA_PARAMGEN_TYPE_FIPS_DEFAULT |
484 | | */ |
485 | 0 | if (gen_type != -1) |
486 | 0 | gctx->gen_type = gen_type; |
487 | 0 | } |
488 | 0 | p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_GINDEX); |
489 | 0 | if (p != NULL |
490 | 0 | && !OSSL_PARAM_get_int(p, &gctx->gindex)) |
491 | 0 | return 0; |
492 | 0 | p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_PCOUNTER); |
493 | 0 | if (p != NULL |
494 | 0 | && !OSSL_PARAM_get_int(p, &gctx->pcounter)) |
495 | 0 | return 0; |
496 | 0 | p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_H); |
497 | 0 | if (p != NULL |
498 | 0 | && !OSSL_PARAM_get_int(p, &gctx->hindex)) |
499 | 0 | return 0; |
500 | 0 | p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_SEED); |
501 | 0 | if (p != NULL |
502 | 0 | && (p->data_type != OSSL_PARAM_OCTET_STRING |
503 | 0 | || !dsa_set_gen_seed(gctx, p->data, p->data_size))) |
504 | 0 | return 0; |
505 | 0 | if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_PBITS)) != NULL |
506 | 0 | && !OSSL_PARAM_get_size_t(p, &gctx->pbits)) |
507 | 0 | return 0; |
508 | 0 | if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_QBITS)) != NULL |
509 | 0 | && !OSSL_PARAM_get_size_t(p, &gctx->qbits)) |
510 | 0 | return 0; |
511 | 0 | p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_DIGEST); |
512 | 0 | if (p != NULL) { |
513 | 0 | if (p->data_type != OSSL_PARAM_UTF8_STRING) |
514 | 0 | return 0; |
515 | 0 | OPENSSL_free(gctx->mdname); |
516 | 0 | gctx->mdname = OPENSSL_strdup(p->data); |
517 | 0 | if (gctx->mdname == NULL) |
518 | 0 | return 0; |
519 | 0 | } |
520 | 0 | p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_DIGEST_PROPS); |
521 | 0 | if (p != NULL) { |
522 | 0 | if (p->data_type != OSSL_PARAM_UTF8_STRING) |
523 | 0 | return 0; |
524 | 0 | OPENSSL_free(gctx->mdprops); |
525 | 0 | gctx->mdprops = OPENSSL_strdup(p->data); |
526 | 0 | if (gctx->mdprops == NULL) |
527 | 0 | return 0; |
528 | 0 | } |
529 | 0 | return 1; |
530 | 0 | } |
531 | | |
532 | | static const OSSL_PARAM *dsa_gen_settable_params(ossl_unused void *genctx, |
533 | | ossl_unused void *provctx) |
534 | 0 | { |
535 | 0 | static OSSL_PARAM settable[] = { |
536 | 0 | OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_FFC_TYPE, NULL, 0), |
537 | 0 | OSSL_PARAM_size_t(OSSL_PKEY_PARAM_FFC_PBITS, NULL), |
538 | 0 | OSSL_PARAM_size_t(OSSL_PKEY_PARAM_FFC_QBITS, NULL), |
539 | 0 | OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST, NULL, 0), |
540 | 0 | OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST_PROPS, NULL, 0), |
541 | 0 | OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_GINDEX, NULL), |
542 | 0 | OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_FFC_SEED, NULL, 0), |
543 | 0 | OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_PCOUNTER, NULL), |
544 | 0 | OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_H, NULL), |
545 | 0 | OSSL_PARAM_END |
546 | 0 | }; |
547 | 0 | return settable; |
548 | 0 | } |
549 | | |
550 | | static int dsa_gencb(int p, int n, BN_GENCB *cb) |
551 | 0 | { |
552 | 0 | struct dsa_gen_ctx *gctx = BN_GENCB_get_arg(cb); |
553 | 0 | OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END }; |
554 | |
|
555 | 0 | params[0] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_POTENTIAL, &p); |
556 | 0 | params[1] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_ITERATION, &n); |
557 | |
|
558 | 0 | return gctx->cb(params, gctx->cbarg); |
559 | 0 | } |
560 | | |
561 | | static void *dsa_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg) |
562 | 0 | { |
563 | 0 | struct dsa_gen_ctx *gctx = genctx; |
564 | 0 | DSA *dsa = NULL; |
565 | 0 | BN_GENCB *gencb = NULL; |
566 | 0 | int ret = 0; |
567 | 0 | FFC_PARAMS *ffc; |
568 | |
|
569 | 0 | if (!ossl_prov_is_running() || gctx == NULL) |
570 | 0 | return NULL; |
571 | 0 | dsa = ossl_dsa_new(gctx->libctx); |
572 | 0 | if (dsa == NULL) |
573 | 0 | return NULL; |
574 | | |
575 | 0 | if (gctx->gen_type == DSA_PARAMGEN_TYPE_FIPS_DEFAULT) |
576 | 0 | gctx->gen_type = (gctx->pbits >= 2048 ? DSA_PARAMGEN_TYPE_FIPS_186_4 : |
577 | 0 | DSA_PARAMGEN_TYPE_FIPS_186_2); |
578 | | |
579 | | /* |
580 | | * Do a bounds check on context gen_type. Must be in range: |
581 | | * DSA_PARAMGEN_TYPE_FIPS_186_4 <= gen_type <= DSA_PARAMGEN_TYPE_FIPS_DEFAULT |
582 | | * Noted here as this needs to be adjusted if a new type is |
583 | | * added. |
584 | | */ |
585 | 0 | if (!ossl_assert((gctx->gen_type >= DSA_PARAMGEN_TYPE_FIPS_186_4) |
586 | 0 | && (gctx->gen_type <= DSA_PARAMGEN_TYPE_FIPS_DEFAULT))) { |
587 | 0 | ERR_raise_data(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR, |
588 | 0 | "gen_type set to unsupported value %d", gctx->gen_type); |
589 | 0 | return NULL; |
590 | 0 | } |
591 | | |
592 | 0 | gctx->cb = osslcb; |
593 | 0 | gctx->cbarg = cbarg; |
594 | 0 | gencb = BN_GENCB_new(); |
595 | 0 | if (gencb != NULL) |
596 | 0 | BN_GENCB_set(gencb, dsa_gencb, genctx); |
597 | |
|
598 | 0 | ffc = ossl_dsa_get0_params(dsa); |
599 | | /* Copy the template value if one was passed */ |
600 | 0 | if (gctx->ffc_params != NULL |
601 | 0 | && !ossl_ffc_params_copy(ffc, gctx->ffc_params)) |
602 | 0 | goto end; |
603 | | |
604 | 0 | if (gctx->seed != NULL |
605 | 0 | && !ossl_ffc_params_set_seed(ffc, gctx->seed, gctx->seedlen)) |
606 | 0 | goto end; |
607 | 0 | if (gctx->gindex != -1) { |
608 | 0 | ossl_ffc_params_set_gindex(ffc, gctx->gindex); |
609 | 0 | if (gctx->pcounter != -1) |
610 | 0 | ossl_ffc_params_set_pcounter(ffc, gctx->pcounter); |
611 | 0 | } else if (gctx->hindex != 0) { |
612 | 0 | ossl_ffc_params_set_h(ffc, gctx->hindex); |
613 | 0 | } |
614 | 0 | if (gctx->mdname != NULL) |
615 | 0 | ossl_ffc_set_digest(ffc, gctx->mdname, gctx->mdprops); |
616 | |
|
617 | 0 | if ((gctx->selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0) { |
618 | |
|
619 | 0 | if (ossl_dsa_generate_ffc_parameters(dsa, gctx->gen_type, |
620 | 0 | gctx->pbits, gctx->qbits, |
621 | 0 | gencb) <= 0) |
622 | 0 | goto end; |
623 | 0 | } |
624 | 0 | ossl_ffc_params_enable_flags(ffc, FFC_PARAM_FLAG_VALIDATE_LEGACY, |
625 | 0 | gctx->gen_type == DSA_PARAMGEN_TYPE_FIPS_186_2); |
626 | 0 | if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) { |
627 | 0 | if (ffc->p == NULL |
628 | 0 | || ffc->q == NULL |
629 | 0 | || ffc->g == NULL) |
630 | 0 | goto end; |
631 | 0 | if (DSA_generate_key(dsa) <= 0) |
632 | 0 | goto end; |
633 | 0 | } |
634 | 0 | ret = 1; |
635 | 0 | end: |
636 | 0 | if (ret <= 0) { |
637 | 0 | DSA_free(dsa); |
638 | 0 | dsa = NULL; |
639 | 0 | } |
640 | 0 | BN_GENCB_free(gencb); |
641 | 0 | return dsa; |
642 | 0 | } |
643 | | |
644 | | static void dsa_gen_cleanup(void *genctx) |
645 | 0 | { |
646 | 0 | struct dsa_gen_ctx *gctx = genctx; |
647 | |
|
648 | 0 | if (gctx == NULL) |
649 | 0 | return; |
650 | | |
651 | 0 | OPENSSL_free(gctx->mdname); |
652 | 0 | OPENSSL_free(gctx->mdprops); |
653 | 0 | OPENSSL_clear_free(gctx->seed, gctx->seedlen); |
654 | 0 | OPENSSL_free(gctx); |
655 | 0 | } |
656 | | |
657 | | static void *dsa_load(const void *reference, size_t reference_sz) |
658 | 423 | { |
659 | 423 | DSA *dsa = NULL; |
660 | | |
661 | 423 | if (ossl_prov_is_running() && reference_sz == sizeof(dsa)) { |
662 | | /* The contents of the reference is the address to our object */ |
663 | 423 | dsa = *(DSA **)reference; |
664 | | /* We grabbed, so we detach it */ |
665 | 423 | *(DSA **)reference = NULL; |
666 | 423 | return dsa; |
667 | 423 | } |
668 | 0 | return NULL; |
669 | 423 | } |
670 | | |
671 | | static void *dsa_dup(const void *keydata_from, int selection) |
672 | 423 | { |
673 | 423 | if (ossl_prov_is_running()) |
674 | 423 | return ossl_dsa_dup(keydata_from, selection); |
675 | 0 | return NULL; |
676 | 423 | } |
677 | | |
678 | | const OSSL_DISPATCH ossl_dsa_keymgmt_functions[] = { |
679 | | { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))dsa_newdata }, |
680 | | { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))dsa_gen_init }, |
681 | | { OSSL_FUNC_KEYMGMT_GEN_SET_TEMPLATE, (void (*)(void))dsa_gen_set_template }, |
682 | | { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))dsa_gen_set_params }, |
683 | | { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS, |
684 | | (void (*)(void))dsa_gen_settable_params }, |
685 | | { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))dsa_gen }, |
686 | | { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))dsa_gen_cleanup }, |
687 | | { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))dsa_load }, |
688 | | { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))dsa_freedata }, |
689 | | { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))dsa_get_params }, |
690 | | { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))dsa_gettable_params }, |
691 | | { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))dsa_has }, |
692 | | { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))dsa_match }, |
693 | | { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))dsa_validate }, |
694 | | { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))dsa_import }, |
695 | | { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))dsa_import_types }, |
696 | | { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))dsa_export }, |
697 | | { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))dsa_export_types }, |
698 | | { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))dsa_dup }, |
699 | | OSSL_DISPATCH_END |
700 | | }; |