2 * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
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
11 * DH low level APIs are deprecated for public use, but still ok for
14 #include "internal/deprecated.h"
16 #include <string.h> /* strcmp */
17 #include <openssl/core_dispatch.h>
18 #include <openssl/core_names.h>
19 #include <openssl/bn.h>
20 #include <openssl/err.h>
21 #include "prov/implementations.h"
22 #include "prov/providercommon.h"
23 #include "prov/provider_ctx.h"
24 #include "crypto/dh.h"
25 #include "internal/sizes.h"
27 static OSSL_FUNC_keymgmt_new_fn dh_newdata;
28 static OSSL_FUNC_keymgmt_free_fn dh_freedata;
29 static OSSL_FUNC_keymgmt_gen_init_fn dh_gen_init;
30 static OSSL_FUNC_keymgmt_gen_init_fn dhx_gen_init;
31 static OSSL_FUNC_keymgmt_gen_set_template_fn dh_gen_set_template;
32 static OSSL_FUNC_keymgmt_gen_set_params_fn dh_gen_set_params;
33 static OSSL_FUNC_keymgmt_gen_settable_params_fn dh_gen_settable_params;
34 static OSSL_FUNC_keymgmt_gen_fn dh_gen;
35 static OSSL_FUNC_keymgmt_gen_cleanup_fn dh_gen_cleanup;
36 static OSSL_FUNC_keymgmt_load_fn dh_load;
37 static OSSL_FUNC_keymgmt_get_params_fn dh_get_params;
38 static OSSL_FUNC_keymgmt_gettable_params_fn dh_gettable_params;
39 static OSSL_FUNC_keymgmt_set_params_fn dh_set_params;
40 static OSSL_FUNC_keymgmt_settable_params_fn dh_settable_params;
41 static OSSL_FUNC_keymgmt_has_fn dh_has;
42 static OSSL_FUNC_keymgmt_match_fn dh_match;
43 static OSSL_FUNC_keymgmt_validate_fn dh_validate;
44 static OSSL_FUNC_keymgmt_import_fn dh_import;
45 static OSSL_FUNC_keymgmt_import_types_fn dh_import_types;
46 static OSSL_FUNC_keymgmt_export_fn dh_export;
47 static OSSL_FUNC_keymgmt_export_types_fn dh_export_types;
48 static OSSL_FUNC_keymgmt_dup_fn dh_dup;
50 #define DH_POSSIBLE_SELECTIONS \
51 (OSSL_KEYMGMT_SELECT_KEYPAIR | OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS)
56 FFC_PARAMS *ffc_params;
58 /* All these parameters are used for parameter generation only */
59 /* If there is a group name then the remaining parameters are not needed */
63 unsigned char *seed; /* optional FIPS186-4 param for testing */
65 int gindex; /* optional FIPS186-4 generator index (ignored if -1) */
66 int gen_type; /* see dhtype2id */
67 int generator; /* Used by DH_PARAMGEN_TYPE_GENERATOR in non fips mode only */
79 static int dh_gen_type_name2id_w_default(const char *name, int type)
81 if (strcmp(name, "default") == 0) {
83 if (type == DH_FLAG_TYPE_DHX)
84 return DH_PARAMGEN_TYPE_FIPS_186_4;
86 return DH_PARAMGEN_TYPE_GROUP;
88 if (type == DH_FLAG_TYPE_DHX)
89 return DH_PARAMGEN_TYPE_FIPS_186_2;
91 return DH_PARAMGEN_TYPE_GENERATOR;
95 return ossl_dh_gen_type_name2id(name, type);
98 static void *dh_newdata(void *provctx)
102 if (ossl_prov_is_running()) {
103 dh = ossl_dh_new_ex(PROV_LIBCTX_OF(provctx));
105 DH_clear_flags(dh, DH_FLAG_TYPE_MASK);
106 DH_set_flags(dh, DH_FLAG_TYPE_DH);
112 static void *dhx_newdata(void *provctx)
116 dh = ossl_dh_new_ex(PROV_LIBCTX_OF(provctx));
118 DH_clear_flags(dh, DH_FLAG_TYPE_MASK);
119 DH_set_flags(dh, DH_FLAG_TYPE_DHX);
124 static void dh_freedata(void *keydata)
129 static int dh_has(const void *keydata, int selection)
131 const DH *dh = keydata;
134 if (!ossl_prov_is_running() || dh == NULL)
136 if ((selection & DH_POSSIBLE_SELECTIONS) == 0)
137 return 1; /* the selection is not missing */
139 if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
140 ok = ok && (DH_get0_pub_key(dh) != NULL);
141 if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
142 ok = ok && (DH_get0_priv_key(dh) != NULL);
143 if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0)
144 ok = ok && (DH_get0_p(dh) != NULL && DH_get0_g(dh) != NULL);
148 static int dh_match(const void *keydata1, const void *keydata2, int selection)
150 const DH *dh1 = keydata1;
151 const DH *dh2 = keydata2;
154 if (!ossl_prov_is_running())
157 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
160 if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0) {
161 const BIGNUM *pa = DH_get0_pub_key(dh1);
162 const BIGNUM *pb = DH_get0_pub_key(dh2);
164 if (pa != NULL && pb != NULL) {
165 ok = ok && BN_cmp(pa, pb) == 0;
170 && (selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) {
171 const BIGNUM *pa = DH_get0_priv_key(dh1);
172 const BIGNUM *pb = DH_get0_priv_key(dh2);
174 if (pa != NULL && pb != NULL) {
175 ok = ok && BN_cmp(pa, pb) == 0;
179 ok = ok && key_checked;
181 if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0) {
182 FFC_PARAMS *dhparams1 = ossl_dh_get0_params((DH *)dh1);
183 FFC_PARAMS *dhparams2 = ossl_dh_get0_params((DH *)dh2);
185 ok = ok && ossl_ffc_params_cmp(dhparams1, dhparams2, 1);
190 static int dh_import(void *keydata, int selection, const OSSL_PARAM params[])
195 if (!ossl_prov_is_running() || dh == NULL)
198 if ((selection & DH_POSSIBLE_SELECTIONS) == 0)
201 if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
202 ok = ok && ossl_dh_params_fromdata(dh, params);
204 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
205 ok = ok && ossl_dh_key_fromdata(dh, params);
210 static int dh_export(void *keydata, int selection, OSSL_CALLBACK *param_cb,
214 OSSL_PARAM_BLD *tmpl = NULL;
215 OSSL_PARAM *params = NULL;
218 if (!ossl_prov_is_running() || dh == NULL)
221 tmpl = OSSL_PARAM_BLD_new();
225 if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
226 ok = ok && ossl_dh_params_todata(dh, tmpl, NULL);
227 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
228 ok = ok && ossl_dh_key_todata(dh, tmpl, NULL);
231 || (params = OSSL_PARAM_BLD_to_param(tmpl)) == NULL) {
235 ok = param_cb(params, cbarg);
236 OSSL_PARAM_free(params);
238 OSSL_PARAM_BLD_free(tmpl);
242 /* IMEXPORT = IMPORT + EXPORT */
244 # define DH_IMEXPORTABLE_PARAMETERS \
245 OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_P, NULL, 0), \
246 OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_Q, NULL, 0), \
247 OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_G, NULL, 0), \
248 OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_COFACTOR, NULL, 0), \
249 OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_GINDEX, NULL), \
250 OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_PCOUNTER, NULL), \
251 OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_H, NULL), \
252 OSSL_PARAM_int(OSSL_PKEY_PARAM_DH_PRIV_LEN, NULL), \
253 OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_FFC_SEED, NULL, 0), \
254 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME, NULL, 0)
255 # define DH_IMEXPORTABLE_PUBLIC_KEY \
256 OSSL_PARAM_BN(OSSL_PKEY_PARAM_PUB_KEY, NULL, 0)
257 # define DH_IMEXPORTABLE_PRIVATE_KEY \
258 OSSL_PARAM_BN(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0)
259 static const OSSL_PARAM dh_all_types[] = {
260 DH_IMEXPORTABLE_PARAMETERS,
261 DH_IMEXPORTABLE_PUBLIC_KEY,
262 DH_IMEXPORTABLE_PRIVATE_KEY,
265 static const OSSL_PARAM dh_parameter_types[] = {
266 DH_IMEXPORTABLE_PARAMETERS,
269 static const OSSL_PARAM dh_key_types[] = {
270 DH_IMEXPORTABLE_PUBLIC_KEY,
271 DH_IMEXPORTABLE_PRIVATE_KEY,
274 static const OSSL_PARAM *dh_types[] = {
275 NULL, /* Index 0 = none of them */
276 dh_parameter_types, /* Index 1 = parameter types */
277 dh_key_types, /* Index 2 = key types */
278 dh_all_types /* Index 3 = 1 + 2 */
281 static const OSSL_PARAM *dh_imexport_types(int selection)
285 if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
287 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
289 return dh_types[type_select];
292 static const OSSL_PARAM *dh_import_types(int selection)
294 return dh_imexport_types(selection);
297 static const OSSL_PARAM *dh_export_types(int selection)
299 return dh_imexport_types(selection);
302 static ossl_inline int dh_get_params(void *key, OSSL_PARAM params[])
307 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL
308 && !OSSL_PARAM_set_int(p, DH_bits(dh)))
310 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL
311 && !OSSL_PARAM_set_int(p, DH_security_bits(dh)))
313 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL
314 && !OSSL_PARAM_set_int(p, DH_size(dh)))
316 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY)) != NULL) {
317 if (p->data_type != OSSL_PARAM_OCTET_STRING)
319 p->return_size = ossl_dh_key2buf(dh, (unsigned char **)&p->data,
321 if (p->return_size == 0)
325 return ossl_dh_params_todata(dh, NULL, params)
326 && ossl_dh_key_todata(dh, NULL, params);
329 static const OSSL_PARAM dh_params[] = {
330 OSSL_PARAM_int(OSSL_PKEY_PARAM_BITS, NULL),
331 OSSL_PARAM_int(OSSL_PKEY_PARAM_SECURITY_BITS, NULL),
332 OSSL_PARAM_int(OSSL_PKEY_PARAM_MAX_SIZE, NULL),
333 OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY, NULL, 0),
334 DH_IMEXPORTABLE_PARAMETERS,
335 DH_IMEXPORTABLE_PUBLIC_KEY,
336 DH_IMEXPORTABLE_PRIVATE_KEY,
340 static const OSSL_PARAM *dh_gettable_params(void *provctx)
345 static const OSSL_PARAM dh_known_settable_params[] = {
346 OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY, NULL, 0),
350 static const OSSL_PARAM *dh_settable_params(void *provctx)
352 return dh_known_settable_params;
355 static int dh_set_params(void *key, const OSSL_PARAM params[])
360 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_ENCODED_PUBLIC_KEY);
362 && (p->data_type != OSSL_PARAM_OCTET_STRING
363 || !ossl_dh_buf2key(dh, p->data, p->data_size)))
369 static int dh_validate_public(const DH *dh, int checktype)
371 const BIGNUM *pub_key = NULL;
374 DH_get0_key(dh, &pub_key, NULL);
378 /* The partial test is only valid for named group's with q = (p - 1) / 2 */
379 if (checktype == OSSL_KEYMGMT_VALIDATE_QUICK_CHECK
380 && ossl_dh_is_named_safe_prime_group(dh))
381 return ossl_dh_check_pub_key_partial(dh, pub_key, &res);
383 return DH_check_pub_key(dh, pub_key, &res);
386 static int dh_validate_private(const DH *dh)
389 const BIGNUM *priv_key = NULL;
391 DH_get0_key(dh, NULL, &priv_key);
392 if (priv_key == NULL)
394 return ossl_dh_check_priv_key(dh, priv_key, &status);;
397 static int dh_validate(const void *keydata, int selection, int checktype)
399 const DH *dh = keydata;
402 if (!ossl_prov_is_running())
405 if ((selection & DH_POSSIBLE_SELECTIONS) == 0)
406 return 1; /* nothing to validate */
408 if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0) {
410 * Both of these functions check parameters. DH_check_params_ex()
411 * performs a lightweight check (e.g. it does not check that p is a
414 if (checktype == OSSL_KEYMGMT_VALIDATE_QUICK_CHECK)
415 ok = ok && DH_check_params_ex(dh);
417 ok = ok && DH_check_ex(dh);
420 if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
421 ok = ok && dh_validate_public(dh, checktype);
423 if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
424 ok = ok && dh_validate_private(dh);
426 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR)
427 == OSSL_KEYMGMT_SELECT_KEYPAIR)
428 ok = ok && ossl_dh_check_pairwise(dh);
432 static void *dh_gen_init_base(void *provctx, int selection,
433 const OSSL_PARAM params[], int type)
435 OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);
436 struct dh_gen_ctx *gctx = NULL;
438 if (!ossl_prov_is_running())
441 if ((selection & (OSSL_KEYMGMT_SELECT_KEYPAIR
442 | OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS)) == 0)
445 if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) {
446 gctx->selection = selection;
447 gctx->libctx = libctx;
452 gctx->gen_type = (type == DH_FLAG_TYPE_DHX)
453 ? DH_PARAMGEN_TYPE_FIPS_186_4
454 : DH_PARAMGEN_TYPE_GROUP;
456 gctx->gen_type = (type == DH_FLAG_TYPE_DHX)
457 ? DH_PARAMGEN_TYPE_FIPS_186_2
458 : DH_PARAMGEN_TYPE_GENERATOR;
463 gctx->generator = DH_GENERATOR_2;
464 gctx->dh_type = type;
466 if (!dh_gen_set_params(gctx, params)) {
473 static void *dh_gen_init(void *provctx, int selection,
474 const OSSL_PARAM params[])
476 return dh_gen_init_base(provctx, selection, params, DH_FLAG_TYPE_DH);
479 static void *dhx_gen_init(void *provctx, int selection,
480 const OSSL_PARAM params[])
482 return dh_gen_init_base(provctx, selection, params, DH_FLAG_TYPE_DHX);
485 static int dh_gen_set_template(void *genctx, void *templ)
487 struct dh_gen_ctx *gctx = genctx;
490 if (!ossl_prov_is_running() || gctx == NULL || dh == NULL)
492 gctx->ffc_params = ossl_dh_get0_params(dh);
496 static int dh_set_gen_seed(struct dh_gen_ctx *gctx, unsigned char *seed,
499 OPENSSL_clear_free(gctx->seed, gctx->seedlen);
502 if (seed != NULL && seedlen > 0) {
503 gctx->seed = OPENSSL_memdup(seed, seedlen);
504 if (gctx->seed == NULL)
506 gctx->seedlen = seedlen;
511 static int dh_gen_common_set_params(void *genctx, const OSSL_PARAM params[])
513 struct dh_gen_ctx *gctx = genctx;
521 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_TYPE);
523 if (p->data_type != OSSL_PARAM_UTF8_STRING
524 || ((gctx->gen_type =
525 dh_gen_type_name2id_w_default(p->data, gctx->dh_type)) == -1)) {
526 ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
530 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_GROUP_NAME);
532 const DH_NAMED_GROUP *group = NULL;
534 if (p->data_type != OSSL_PARAM_UTF8_STRING
535 || (group = ossl_ffc_name_to_dh_named_group(p->data)) == NULL
536 || ((gctx->group_nid =
537 ossl_ffc_named_group_get_uid(group)) == NID_undef)) {
538 ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
542 if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_PBITS)) != NULL
543 && !OSSL_PARAM_get_size_t(p, &gctx->pbits))
545 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DH_PRIV_LEN);
546 if (p != NULL && !OSSL_PARAM_get_int(p, &gctx->priv_len))
551 static const OSSL_PARAM *dh_gen_settable_params(ossl_unused void *genctx,
552 ossl_unused void *provctx)
554 static const OSSL_PARAM dh_gen_settable[] = {
555 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_FFC_TYPE, NULL, 0),
556 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME, NULL, 0),
557 OSSL_PARAM_int(OSSL_PKEY_PARAM_DH_PRIV_LEN, NULL),
558 OSSL_PARAM_size_t(OSSL_PKEY_PARAM_FFC_PBITS, NULL),
559 OSSL_PARAM_int(OSSL_PKEY_PARAM_DH_GENERATOR, NULL),
562 return dh_gen_settable;
565 static const OSSL_PARAM *dhx_gen_settable_params(ossl_unused void *genctx,
566 ossl_unused void *provctx)
568 static const OSSL_PARAM dhx_gen_settable[] = {
569 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_FFC_TYPE, NULL, 0),
570 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME, NULL, 0),
571 OSSL_PARAM_int(OSSL_PKEY_PARAM_DH_PRIV_LEN, NULL),
572 OSSL_PARAM_size_t(OSSL_PKEY_PARAM_FFC_PBITS, NULL),
573 OSSL_PARAM_size_t(OSSL_PKEY_PARAM_FFC_QBITS, NULL),
574 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST, NULL, 0),
575 OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST_PROPS, NULL, 0),
576 OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_GINDEX, NULL),
577 OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_FFC_SEED, NULL, 0),
578 OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_PCOUNTER, NULL),
579 OSSL_PARAM_int(OSSL_PKEY_PARAM_FFC_H, NULL),
582 return dhx_gen_settable;
585 static int dhx_gen_set_params(void *genctx, const OSSL_PARAM params[])
587 struct dh_gen_ctx *gctx = genctx;
590 if (!dh_gen_common_set_params(genctx, params))
593 /* Parameters related to fips186-4 and fips186-2 */
594 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_GINDEX);
595 if (p != NULL && !OSSL_PARAM_get_int(p, &gctx->gindex))
597 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_PCOUNTER);
598 if (p != NULL && !OSSL_PARAM_get_int(p, &gctx->pcounter))
600 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_H);
601 if (p != NULL && !OSSL_PARAM_get_int(p, &gctx->hindex))
603 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_SEED);
605 && (p->data_type != OSSL_PARAM_OCTET_STRING
606 || !dh_set_gen_seed(gctx, p->data, p->data_size)))
608 if ((p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_QBITS)) != NULL
609 && !OSSL_PARAM_get_size_t(p, &gctx->qbits))
611 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_DIGEST);
613 if (p->data_type != OSSL_PARAM_UTF8_STRING)
615 OPENSSL_free(gctx->mdname);
616 gctx->mdname = OPENSSL_strdup(p->data);
617 if (gctx->mdname == NULL)
620 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_DIGEST_PROPS);
622 if (p->data_type != OSSL_PARAM_UTF8_STRING)
624 OPENSSL_free(gctx->mdprops);
625 gctx->mdprops = OPENSSL_strdup(p->data);
626 if (gctx->mdprops == NULL)
630 /* Parameters that are not allowed for DHX */
631 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DH_GENERATOR);
633 ERR_raise(ERR_LIB_PROV, ERR_R_UNSUPPORTED);
639 static int dh_gen_set_params(void *genctx, const OSSL_PARAM params[])
641 struct dh_gen_ctx *gctx = genctx;
644 if (!dh_gen_common_set_params(genctx, params))
647 p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_DH_GENERATOR);
648 if (p != NULL && !OSSL_PARAM_get_int(p, &gctx->generator))
651 /* Parameters that are not allowed for DH */
652 if (OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_GINDEX) != NULL
653 || OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_PCOUNTER) != NULL
654 || OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_H) != NULL
655 || OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_SEED) != NULL
656 || OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_QBITS) != NULL
657 || OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_DIGEST) != NULL
658 || OSSL_PARAM_locate_const(params,
659 OSSL_PKEY_PARAM_FFC_DIGEST_PROPS) != NULL) {
660 ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
666 static int dh_gencb(int p, int n, BN_GENCB *cb)
668 struct dh_gen_ctx *gctx = BN_GENCB_get_arg(cb);
669 OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END };
671 params[0] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_POTENTIAL, &p);
672 params[1] = OSSL_PARAM_construct_int(OSSL_GEN_PARAM_ITERATION, &n);
674 return gctx->cb(params, gctx->cbarg);
677 static void *dh_gen(void *genctx, OSSL_CALLBACK *osslcb, void *cbarg)
680 struct dh_gen_ctx *gctx = genctx;
682 BN_GENCB *gencb = NULL;
685 if (!ossl_prov_is_running() || gctx == NULL)
689 * If a group name is selected then the type is group regardless of what the
690 * the user selected. This overrides rather than errors for backwards
693 if (gctx->group_nid != NID_undef)
694 gctx->gen_type = DH_PARAMGEN_TYPE_GROUP;
696 /* For parameter generation - If there is a group name just create it */
697 if (gctx->gen_type == DH_PARAMGEN_TYPE_GROUP
698 && gctx->ffc_params == NULL) {
699 /* Select a named group if there is not one already */
700 if (gctx->group_nid == NID_undef)
701 gctx->group_nid = ossl_dh_get_named_group_uid_from_size(gctx->pbits);
702 if (gctx->group_nid == NID_undef)
704 dh = ossl_dh_new_by_nid_ex(gctx->libctx, gctx->group_nid);
707 ffc = ossl_dh_get0_params(dh);
709 dh = ossl_dh_new_ex(gctx->libctx);
712 ffc = ossl_dh_get0_params(dh);
714 /* Copy the template value if one was passed */
715 if (gctx->ffc_params != NULL
716 && !ossl_ffc_params_copy(ffc, gctx->ffc_params))
719 if (!ossl_ffc_params_set_seed(ffc, gctx->seed, gctx->seedlen))
721 if (gctx->gindex != -1) {
722 ossl_ffc_params_set_gindex(ffc, gctx->gindex);
723 if (gctx->pcounter != -1)
724 ossl_ffc_params_set_pcounter(ffc, gctx->pcounter);
725 } else if (gctx->hindex != 0) {
726 ossl_ffc_params_set_h(ffc, gctx->hindex);
728 if (gctx->mdname != NULL) {
729 if (!ossl_ffc_set_digest(ffc, gctx->mdname, gctx->mdprops))
734 gencb = BN_GENCB_new();
736 BN_GENCB_set(gencb, dh_gencb, genctx);
738 if ((gctx->selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0) {
740 * NOTE: The old safe prime generator code is not used in fips mode,
741 * (i.e internally it ignores the generator and chooses a named
742 * group based on pbits.
744 if (gctx->gen_type == DH_PARAMGEN_TYPE_GENERATOR)
745 ret = DH_generate_parameters_ex(dh, gctx->pbits,
746 gctx->generator, gencb);
748 ret = ossl_dh_generate_ffc_parameters(dh, gctx->gen_type,
749 gctx->pbits, gctx->qbits,
756 if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0) {
757 if (ffc->p == NULL || ffc->g == NULL)
759 if (gctx->priv_len > 0)
760 DH_set_length(dh, (long)gctx->priv_len);
761 ossl_ffc_params_enable_flags(ffc, FFC_PARAM_FLAG_VALIDATE_LEGACY,
762 gctx->gen_type == DH_PARAMGEN_TYPE_FIPS_186_2);
763 if (DH_generate_key(dh) <= 0)
766 DH_clear_flags(dh, DH_FLAG_TYPE_MASK);
767 DH_set_flags(dh, gctx->dh_type);
775 BN_GENCB_free(gencb);
779 static void dh_gen_cleanup(void *genctx)
781 struct dh_gen_ctx *gctx = genctx;
786 OPENSSL_free(gctx->mdname);
787 OPENSSL_free(gctx->mdprops);
788 OPENSSL_clear_free(gctx->seed, gctx->seedlen);
792 static void *dh_load(const void *reference, size_t reference_sz)
796 if (ossl_prov_is_running() && reference_sz == sizeof(dh)) {
797 /* The contents of the reference is the address to our object */
798 dh = *(DH **)reference;
799 /* We grabbed, so we detach it */
800 *(DH **)reference = NULL;
806 static void *dh_dup(const void *keydata_from, int selection)
808 if (ossl_prov_is_running())
809 return ossl_dh_dup(keydata_from, selection);
813 const OSSL_DISPATCH ossl_dh_keymgmt_functions[] = {
814 { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))dh_newdata },
815 { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))dh_gen_init },
816 { OSSL_FUNC_KEYMGMT_GEN_SET_TEMPLATE, (void (*)(void))dh_gen_set_template },
817 { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))dh_gen_set_params },
818 { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
819 (void (*)(void))dh_gen_settable_params },
820 { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))dh_gen },
821 { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))dh_gen_cleanup },
822 { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))dh_load },
823 { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))dh_freedata },
824 { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))dh_get_params },
825 { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))dh_gettable_params },
826 { OSSL_FUNC_KEYMGMT_SET_PARAMS, (void (*) (void))dh_set_params },
827 { OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS, (void (*) (void))dh_settable_params },
828 { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))dh_has },
829 { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))dh_match },
830 { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))dh_validate },
831 { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))dh_import },
832 { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))dh_import_types },
833 { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))dh_export },
834 { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))dh_export_types },
835 { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))dh_dup },
839 /* For any DH key, we use the "DH" algorithms regardless of sub-type. */
840 static const char *dhx_query_operation_name(int operation_id)
845 const OSSL_DISPATCH ossl_dhx_keymgmt_functions[] = {
846 { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))dhx_newdata },
847 { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))dhx_gen_init },
848 { OSSL_FUNC_KEYMGMT_GEN_SET_TEMPLATE, (void (*)(void))dh_gen_set_template },
849 { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))dhx_gen_set_params },
850 { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
851 (void (*)(void))dhx_gen_settable_params },
852 { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))dh_gen },
853 { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))dh_gen_cleanup },
854 { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))dh_load },
855 { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))dh_freedata },
856 { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))dh_get_params },
857 { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))dh_gettable_params },
858 { OSSL_FUNC_KEYMGMT_SET_PARAMS, (void (*) (void))dh_set_params },
859 { OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS, (void (*) (void))dh_settable_params },
860 { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))dh_has },
861 { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))dh_match },
862 { OSSL_FUNC_KEYMGMT_VALIDATE, (void (*)(void))dh_validate },
863 { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))dh_import },
864 { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))dh_import_types },
865 { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))dh_export },
866 { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))dh_export_types },
867 { OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME,
868 (void (*)(void))dhx_query_operation_name },
869 { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))dh_dup },