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EVP: constify the EVP_PKEY_get_*_param() argument |pkey|
[thirdparty/openssl.git] / ssl / t1_lib.c
CommitLineData
846e33c7 1/*
33388b44 2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
f1fd4544 3 *
2c18d164 4 * Licensed under the Apache License 2.0 (the "License"). You may not use
846e33c7
RS		 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
f1fd4544 8 */
58964a49
RE		 9
10#include <stdio.h>
aa474d1f 11#include <stdlib.h>
ec577822 12#include <openssl/objects.h>
6434abbf
DSH		 13#include <openssl/evp.h>
14#include <openssl/hmac.h>
a76ce286 15#include <openssl/core_names.h>
67c8e7f4 16#include <openssl/ocsp.h>
5951e840
MC		 17#include <openssl/conf.h>
18#include <openssl/x509v3.h>
3c27208f
RS		 19#include <openssl/dh.h>
20#include <openssl/bn.h>
9d2d857f 21#include <openssl/provider.h>
091f6074 22#include <openssl/param_build.h>
677963e5 23#include "internal/nelem.h"
c2041da8 24#include "internal/evp.h"
48e971dd 25#include "internal/tlsgroups.h"
706457b7 26#include "ssl_local.h"
3c27208f 27#include <openssl/ct.h>
58964a49 28
5235ef44 29static const SIGALG_LOOKUP *find_sig_alg(SSL *s, X509 *x, EVP_PKEY *pkey);
b0031e5d 30static int tls12_sigalg_allowed(const SSL *s, int op, const SIGALG_LOOKUP *lu);
5235ef44 31
0f113f3e
MC		 32SSL3_ENC_METHOD const TLSv1_enc_data = {
33 tls1_enc,
34 tls1_mac,
35 tls1_setup_key_block,
36 tls1_generate_master_secret,
37 tls1_change_cipher_state,
38 tls1_final_finish_mac,
0f113f3e
MC		 39 TLS_MD_CLIENT_FINISH_CONST, TLS_MD_CLIENT_FINISH_CONST_SIZE,
40 TLS_MD_SERVER_FINISH_CONST, TLS_MD_SERVER_FINISH_CONST_SIZE,
41 tls1_alert_code,
42 tls1_export_keying_material,
43 0,
a29fa98c 44 ssl3_set_handshake_header,
2c7b4dbc 45 tls_close_construct_packet,
0f113f3e
MC		 46 ssl3_handshake_write
47};
48
49SSL3_ENC_METHOD const TLSv1_1_enc_data = {
50 tls1_enc,
51 tls1_mac,
52 tls1_setup_key_block,
53 tls1_generate_master_secret,
54 tls1_change_cipher_state,
55 tls1_final_finish_mac,
0f113f3e
MC		 56 TLS_MD_CLIENT_FINISH_CONST, TLS_MD_CLIENT_FINISH_CONST_SIZE,
57 TLS_MD_SERVER_FINISH_CONST, TLS_MD_SERVER_FINISH_CONST_SIZE,
58 tls1_alert_code,
59 tls1_export_keying_material,
60 SSL_ENC_FLAG_EXPLICIT_IV,
a29fa98c 61 ssl3_set_handshake_header,
2c7b4dbc 62 tls_close_construct_packet,
0f113f3e
MC		 63 ssl3_handshake_write
64};
65
66SSL3_ENC_METHOD const TLSv1_2_enc_data = {
67 tls1_enc,
68 tls1_mac,
69 tls1_setup_key_block,
70 tls1_generate_master_secret,
71 tls1_change_cipher_state,
72 tls1_final_finish_mac,
0f113f3e
MC		 73 TLS_MD_CLIENT_FINISH_CONST, TLS_MD_CLIENT_FINISH_CONST_SIZE,
74 TLS_MD_SERVER_FINISH_CONST, TLS_MD_SERVER_FINISH_CONST_SIZE,
75 tls1_alert_code,
76 tls1_export_keying_material,
77 SSL_ENC_FLAG_EXPLICIT_IV | SSL_ENC_FLAG_SIGALGS | SSL_ENC_FLAG_SHA256_PRF
78 | SSL_ENC_FLAG_TLS1_2_CIPHERS,
a29fa98c 79 ssl3_set_handshake_header,
2c7b4dbc 80 tls_close_construct_packet,
0f113f3e
MC		 81 ssl3_handshake_write
82};
58964a49 83
582a17d6 84SSL3_ENC_METHOD const TLSv1_3_enc_data = {
bebc0c7d 85 tls13_enc,
582a17d6 86 tls1_mac,
92760c21
MC		 87 tls13_setup_key_block,
88 tls13_generate_master_secret,
89 tls13_change_cipher_state,
90 tls13_final_finish_mac,
582a17d6
MC		 91 TLS_MD_CLIENT_FINISH_CONST, TLS_MD_CLIENT_FINISH_CONST_SIZE,
92 TLS_MD_SERVER_FINISH_CONST, TLS_MD_SERVER_FINISH_CONST_SIZE,
04904312 93 tls13_alert_code,
0ca8d1ec 94 tls13_export_keying_material,
bebc0c7d 95 SSL_ENC_FLAG_SIGALGS | SSL_ENC_FLAG_SHA256_PRF,
582a17d6
MC		 96 ssl3_set_handshake_header,
97 tls_close_construct_packet,
98 ssl3_handshake_write
99};
100
f3b656b2 101long tls1_default_timeout(void)
0f113f3e
MC		 102{
103 /*
104 * 2 hours, the 24 hours mentioned in the TLSv1 spec is way too long for
105 * http, the cache would over fill
106 */
107 return (60 * 60 * 2);
108}
58964a49 109
6b691a5c 110int tls1_new(SSL *s)
0f113f3e
MC		 111{
112 if (!ssl3_new(s))
b77f3ed1
MC		 113 return 0;
114 if (!s->method->ssl_clear(s))
115 return 0;
116
117 return 1;
0f113f3e 118}
58964a49 119
6b691a5c 120void tls1_free(SSL *s)
0f113f3e 121{
aff8c126 122 OPENSSL_free(s->ext.session_ticket);
0f113f3e
MC		 123 ssl3_free(s);
124}
58964a49 125
b77f3ed1 126int tls1_clear(SSL *s)
0f113f3e 127{
b77f3ed1
MC		 128 if (!ssl3_clear(s))
129 return 0;
130
4fa52141 131 if (s->method->version == TLS_ANY_VERSION)
5c587fb6 132 s->version = TLS_MAX_VERSION_INTERNAL;
4fa52141
VD		 133 else
134 s->version = s->method->version;
b77f3ed1
MC		 135
136 return 1;
0f113f3e 137}
58964a49 138
9d2d857f
MC		 139/* Legacy NID to group_id mapping. Only works for groups we know about */
140static struct {
141 int nid;
142 uint16_t group_id;
143} nid_to_group[] = {
48e971dd
MC		 144 {NID_sect163k1, OSSL_TLS_GROUP_ID_sect163k1},
145 {NID_sect163r1, OSSL_TLS_GROUP_ID_sect163r1},
146 {NID_sect163r2, OSSL_TLS_GROUP_ID_sect163r2},
147 {NID_sect193r1, OSSL_TLS_GROUP_ID_sect193r1},
148 {NID_sect193r2, OSSL_TLS_GROUP_ID_sect193r2},
149 {NID_sect233k1, OSSL_TLS_GROUP_ID_sect233k1},
150 {NID_sect233r1, OSSL_TLS_GROUP_ID_sect233r1},
151 {NID_sect239k1, OSSL_TLS_GROUP_ID_sect239k1},
152 {NID_sect283k1, OSSL_TLS_GROUP_ID_sect283k1},
153 {NID_sect283r1, OSSL_TLS_GROUP_ID_sect283r1},
154 {NID_sect409k1, OSSL_TLS_GROUP_ID_sect409k1},
155 {NID_sect409r1, OSSL_TLS_GROUP_ID_sect409r1},
156 {NID_sect571k1, OSSL_TLS_GROUP_ID_sect571k1},
157 {NID_sect571r1, OSSL_TLS_GROUP_ID_sect571r1},
158 {NID_secp160k1, OSSL_TLS_GROUP_ID_secp160k1},
159 {NID_secp160r1, OSSL_TLS_GROUP_ID_secp160r1},
160 {NID_secp160r2, OSSL_TLS_GROUP_ID_secp160r2},
161 {NID_secp192k1, OSSL_TLS_GROUP_ID_secp192k1},
162 {NID_X9_62_prime192v1, OSSL_TLS_GROUP_ID_secp192r1},
163 {NID_secp224k1, OSSL_TLS_GROUP_ID_secp224k1},
164 {NID_secp224r1, OSSL_TLS_GROUP_ID_secp224r1},
165 {NID_secp256k1, OSSL_TLS_GROUP_ID_secp256k1},
166 {NID_X9_62_prime256v1, OSSL_TLS_GROUP_ID_secp256r1},
167 {NID_secp384r1, OSSL_TLS_GROUP_ID_secp384r1},
168 {NID_secp521r1, OSSL_TLS_GROUP_ID_secp521r1},
169 {NID_brainpoolP256r1, OSSL_TLS_GROUP_ID_brainpoolP256r1},
170 {NID_brainpoolP384r1, OSSL_TLS_GROUP_ID_brainpoolP384r1},
171 {NID_brainpoolP512r1, OSSL_TLS_GROUP_ID_brainpoolP512r1},
172 {EVP_PKEY_X25519, OSSL_TLS_GROUP_ID_x25519},
173 {EVP_PKEY_X448, OSSL_TLS_GROUP_ID_x448},
9d2d857f
MC		 174 {NID_id_tc26_gost_3410_2012_256_paramSetA, 0x0022},
175 {NID_id_tc26_gost_3410_2012_256_paramSetB, 0x0023},
176 {NID_id_tc26_gost_3410_2012_256_paramSetC, 0x0024},
177 {NID_id_tc26_gost_3410_2012_256_paramSetD, 0x0025},
178 {NID_id_tc26_gost_3410_2012_512_paramSetA, 0x0026},
179 {NID_id_tc26_gost_3410_2012_512_paramSetB, 0x0027},
180 {NID_id_tc26_gost_3410_2012_512_paramSetC, 0x0028},
48e971dd
MC		 181 {NID_ffdhe2048, OSSL_TLS_GROUP_ID_ffdhe2048},
182 {NID_ffdhe3072, OSSL_TLS_GROUP_ID_ffdhe3072},
183 {NID_ffdhe4096, OSSL_TLS_GROUP_ID_ffdhe4096},
184 {NID_ffdhe6144, OSSL_TLS_GROUP_ID_ffdhe6144},
185 {NID_ffdhe8192, OSSL_TLS_GROUP_ID_ffdhe8192}
0f113f3e
MC		 186};
187
dbc6268f 188#ifndef OPENSSL_NO_EC
0f113f3e
MC		 189static const unsigned char ecformats_default[] = {
190 TLSEXT_ECPOINTFORMAT_uncompressed,
191 TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime,
192 TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2
193};
65dc5c3c 194#endif /* !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) */
0f113f3e 195
fe6ef247 196/* The default curves */
65dc5c3c 197#if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_EC)
9aaecbfc 198static const uint16_t supported_groups_default[] = {
65dc5c3c 199# ifndef OPENSSL_NO_EC
9e84a42d
DSH		 200 29, /* X25519 (29) */
201 23, /* secp256r1 (23) */
0e1d6ecf 202 30, /* X448 (30) */
9e84a42d
DSH		 203 25, /* secp521r1 (25) */
204 24, /* secp384r1 (24) */
65dc5c3c 205# endif
fa555aa8
NM		 206# ifndef OPENSSL_NO_GOST
207 34, /* GC256A (34) */
208 35, /* GC256B (35) */
209 36, /* GC256C (36) */
210 37, /* GC256D (37) */
211 38, /* GC512A (38) */
212 39, /* GC512B (39) */
213 40, /* GC512C (40) */
214# endif
65dc5c3c 215# ifndef OPENSSL_NO_DH
9aaecbfc 216 0x100, /* ffdhe2048 (0x100) */
217 0x101, /* ffdhe3072 (0x101) */
218 0x102, /* ffdhe4096 (0x102) */
219 0x103, /* ffdhe6144 (0x103) */
220 0x104, /* ffdhe8192 (0x104) */
65dc5c3c 221# endif
de57d237 222};
65dc5c3c 223#endif /* !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) */
de57d237 224
dbc6268f 225#ifndef OPENSSL_NO_EC
9e84a42d
DSH		 226static const uint16_t suiteb_curves[] = {
227 TLSEXT_curve_P_256,
228 TLSEXT_curve_P_384
0f113f3e 229};
dbc6268f 230#endif
2ea80354 231
9d2d857f
MC		 232struct provider_group_data_st {
233 SSL_CTX *ctx;
234 OSSL_PROVIDER *provider;
235};
236
237#define TLS_GROUP_LIST_MALLOC_BLOCK_SIZE 10
238static OSSL_CALLBACK add_provider_groups;
239static int add_provider_groups(const OSSL_PARAM params[], void *data)
240{
241 struct provider_group_data_st *pgd = data;
242 SSL_CTX *ctx = pgd->ctx;
243 OSSL_PROVIDER *provider = pgd->provider;
244 const OSSL_PARAM *p;
245 TLS_GROUP_INFO *ginf = NULL;
246 EVP_KEYMGMT *keymgmt;
247 unsigned int gid;
c1a74f59 248 unsigned int is_kem = 0;
9d2d857f
MC		 249 int ret = 0;
250
251 if (ctx->group_list_max_len == ctx->group_list_len) {
252 TLS_GROUP_INFO *tmp = NULL;
253
254 if (ctx->group_list_max_len == 0)
255 tmp = OPENSSL_malloc(sizeof(TLS_GROUP_INFO)
256 * TLS_GROUP_LIST_MALLOC_BLOCK_SIZE);
257 else
258 tmp = OPENSSL_realloc(ctx->group_list,
259 (ctx->group_list_max_len
260 + TLS_GROUP_LIST_MALLOC_BLOCK_SIZE)
261 * sizeof(TLS_GROUP_INFO));
262 if (tmp == NULL) {
6849b73c 263 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
9d2d857f
MC		 264 return 0;
265 }
266 ctx->group_list = tmp;
267 memset(tmp + ctx->group_list_max_len,
268 0,
269 sizeof(TLS_GROUP_INFO) * TLS_GROUP_LIST_MALLOC_BLOCK_SIZE);
270 ctx->group_list_max_len += TLS_GROUP_LIST_MALLOC_BLOCK_SIZE;
271 }
272
273 ginf = &ctx->group_list[ctx->group_list_len];
274
275 p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_NAME);
276 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING) {
6849b73c 277 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_INVALID_ARGUMENT);
9d2d857f
MC		 278 goto err;
279 }
280 ginf->tlsname = OPENSSL_strdup(p->data);
281 if (ginf->tlsname == NULL) {
6849b73c 282 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
9d2d857f
MC		 283 goto err;
284 }
285
286 p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_NAME_INTERNAL);
287 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING) {
6849b73c 288 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_INVALID_ARGUMENT);
9d2d857f
MC		 289 goto err;
290 }
291 ginf->realname = OPENSSL_strdup(p->data);
292 if (ginf->realname == NULL) {
6849b73c 293 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
9d2d857f
MC		 294 goto err;
295 }
296
297 p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_ID);
298 if (p == NULL || !OSSL_PARAM_get_uint(p, &gid) || gid > UINT16_MAX) {
6849b73c 299 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_INVALID_ARGUMENT);
9d2d857f
MC		 300 goto err;
301 }
302 ginf->group_id = (uint16_t)gid;
303
304 p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_ALG);
305 if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING) {
6849b73c 306 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_INVALID_ARGUMENT);
9d2d857f
MC		 307 goto err;
308 }
309 ginf->algorithm = OPENSSL_strdup(p->data);
310 if (ginf->algorithm == NULL) {
6849b73c 311 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
9d2d857f
MC		 312 goto err;
313 }
314
315 p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_SECURITY_BITS);
316 if (p == NULL || !OSSL_PARAM_get_uint(p, &ginf->secbits)) {
6849b73c 317 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_INVALID_ARGUMENT);
9d2d857f
MC		 318 goto err;
319 }
320
c1a74f59
NT		 321 p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_IS_KEM);
322 if (p != NULL && (!OSSL_PARAM_get_uint(p, &is_kem) || is_kem > 1)) {
6849b73c 323 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_INVALID_ARGUMENT);
c1a74f59
NT		 324 goto err;
325 }
326 ginf->is_kem = 1 & is_kem;
327
9d2d857f
MC		 328 p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_MIN_TLS);
329 if (p == NULL || !OSSL_PARAM_get_int(p, &ginf->mintls)) {
6849b73c 330 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_INVALID_ARGUMENT);
9d2d857f
MC		 331 goto err;
332 }
333
334 p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_MAX_TLS);
335 if (p == NULL || !OSSL_PARAM_get_int(p, &ginf->maxtls)) {
6849b73c 336 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_INVALID_ARGUMENT);
90a74d8c 337 goto err;
9d2d857f
MC		 338 }
339
340 p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_MIN_DTLS);
341 if (p == NULL || !OSSL_PARAM_get_int(p, &ginf->mindtls)) {
6849b73c 342 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_INVALID_ARGUMENT);
9d2d857f
MC		 343 goto err;
344 }
345
346 p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_MAX_DTLS);
347 if (p == NULL || !OSSL_PARAM_get_int(p, &ginf->maxdtls)) {
6849b73c 348 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_INVALID_ARGUMENT);
9d2d857f
MC		 349 goto err;
350 }
351 /*
352 * Now check that the algorithm is actually usable for our property query
353 * string. Regardless of the result we still return success because we have
354 * successfully processed this group, even though we may decide not to use
355 * it.
356 */
357 ret = 1;
358 keymgmt = EVP_KEYMGMT_fetch(ctx->libctx, ginf->algorithm, ctx->propq);
359 if (keymgmt != NULL) {
360 /*
361 * We have successfully fetched the algorithm - however if the provider
362 * doesn't match this one then we ignore it.
363 *
364 * Note: We're cheating a little here. Technically if the same algorithm
365 * is available from more than one provider then it is undefined which
366 * implementation you will get back. Theoretically this could be
367 * different every time...we assume here that you'll always get the
368 * same one back if you repeat the exact same fetch. Is this a reasonable
369 * assumption to make (in which case perhaps we should document this
370 * behaviour)?
371 */
372 if (EVP_KEYMGMT_provider(keymgmt) == provider) {
373 /* We have a match - so we will use this group */
374 ctx->group_list_len++;
375 ginf = NULL;
376 }
377 EVP_KEYMGMT_free(keymgmt);
378 }
379 err:
380 if (ginf != NULL) {
381 OPENSSL_free(ginf->tlsname);
382 OPENSSL_free(ginf->realname);
383 OPENSSL_free(ginf->algorithm);
384 ginf->tlsname = ginf->realname = NULL;
385 }
386 return ret;
387}
388
389static int discover_provider_groups(OSSL_PROVIDER *provider, void *vctx)
390{
391 struct provider_group_data_st pgd;
392
393 pgd.ctx = vctx;
394 pgd.provider = provider;
395 return OSSL_PROVIDER_get_capabilities(provider, "TLS-GROUP",
396 add_provider_groups, &pgd);
397}
398
399int ssl_load_groups(SSL_CTX *ctx)
400{
401 return OSSL_PROVIDER_do_all(ctx->libctx, discover_provider_groups, ctx);
402}
403
260009d8
MC		 404static uint16_t tls1_group_name2id(SSL_CTX *ctx, const char *name)
405{
406 size_t i;
407 int nid = NID_undef;
408
409 /* See if we can identify a nid for this name */
410#ifndef OPENSSL_NO_EC
411 nid = EC_curve_nist2nid(name);
412#endif
413 if (nid == NID_undef)
414 nid = OBJ_sn2nid(name);
415 if (nid == NID_undef)
416 nid = OBJ_ln2nid(name);
417
418 for (i = 0; i < ctx->group_list_len; i++) {
419 if (strcmp(ctx->group_list[i].tlsname, name) == 0
420 || (nid != NID_undef
421 && nid == tls1_group_id2nid(ctx->group_list[i].group_id,
cbb85bda
MC		 422 0))
423 )
260009d8
MC		 424 return ctx->group_list[i].group_id;
425 }
426
427 return 0;
428}
429
9d2d857f 430const TLS_GROUP_INFO *tls1_group_id_lookup(SSL_CTX *ctx, uint16_t group_id)
0f113f3e 431{
9aaecbfc 432 size_t i;
433
9d2d857f
MC		 434 for (i = 0; i < ctx->group_list_len; i++) {
435 if (ctx->group_list[i].group_id == group_id)
436 return &ctx->group_list[i];
9aaecbfc 437 }
9d2d857f 438
9aaecbfc 439 return NULL;
0f113f3e 440}
525de5d3 441
260009d8 442int tls1_group_id2nid(uint16_t group_id, int include_unknown)
84d4b9e3 443{
9d2d857f 444 size_t i;
84d4b9e3 445
260009d8
MC		 446 if (group_id == 0)
447 return NID_undef;
448
9d2d857f
MC		 449 /*
450 * Return well known Group NIDs - for backwards compatibility. This won't
451 * work for groups we don't know about.
452 */
453 for (i = 0; i < OSSL_NELEM(nid_to_group); i++)
454 {
455 if (nid_to_group[i].group_id == group_id)
456 return nid_to_group[i].nid;
457 }
260009d8
MC		 458 if (!include_unknown)
459 return NID_undef;
460 return TLSEXT_nid_unknown | (int)group_id;
84d4b9e3 461}
462
4a1b4280 463static uint16_t tls1_nid2group_id(int nid)
0f113f3e 464{
2fa2d15a 465 size_t i;
9aaecbfc 466
9d2d857f
MC		 467 /*
468 * Return well known Group ids - for backwards compatibility. This won't
469 * work for groups we don't know about.
470 */
471 for (i = 0; i < OSSL_NELEM(nid_to_group); i++)
472 {
473 if (nid_to_group[i].nid == nid)
474 return nid_to_group[i].group_id;
0f113f3e 475 }
9d2d857f 476
2fa2d15a 477 return 0;
0f113f3e
MC		 478}
479
740580c2 480/*
ff6d20a6
DSH		 481 * Set *pgroups to the supported groups list and *pgroupslen to
482 * the number of groups supported.
fd2b65ce 483 */
ff6d20a6
DSH		 484void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups,
485 size_t *pgroupslen)
0f113f3e 486{
65dc5c3c 487#if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
34e5292c
DSH		 488 /* For Suite B mode only include P-256, P-384 */
489 switch (tls1_suiteb(s)) {
65dc5c3c 490# ifndef OPENSSL_NO_EC
34e5292c 491 case SSL_CERT_FLAG_SUITEB_128_LOS:
ff6d20a6
DSH		 492 *pgroups = suiteb_curves;
493 *pgroupslen = OSSL_NELEM(suiteb_curves);
34e5292c
DSH		 494 break;
495
496 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY:
ff6d20a6
DSH		 497 *pgroups = suiteb_curves;
498 *pgroupslen = 1;
34e5292c
DSH		 499 break;
500
501 case SSL_CERT_FLAG_SUITEB_192_LOS:
ff6d20a6
DSH		 502 *pgroups = suiteb_curves + 1;
503 *pgroupslen = 1;
34e5292c 504 break;
65dc5c3c 505# endif
34e5292c
DSH		 506
507 default:
508 if (s->ext.supportedgroups == NULL) {
9aaecbfc 509 *pgroups = supported_groups_default;
510 *pgroupslen = OSSL_NELEM(supported_groups_default);
34e5292c 511 } else {
ff6d20a6
DSH		 512 *pgroups = s->ext.supportedgroups;
513 *pgroupslen = s->ext.supportedgroups_len;
0f113f3e 514 }
34e5292c 515 break;
0f113f3e 516 }
65dc5c3c
MC		 517#else
518 *pgroups = NULL;
519 *pgroupslen = 0;
520#endif /* !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) */
0f113f3e 521}
b362ccab 522
9d2d857f 523int tls_valid_group(SSL *s, uint16_t group_id, int minversion, int maxversion)
9aaecbfc 524{
9d2d857f
MC		 525 const TLS_GROUP_INFO *ginfo = tls1_group_id_lookup(s->ctx, group_id);
526 int ret;
9aaecbfc 527
9d2d857f
MC		 528 if (ginfo == NULL)
529 return 0;
530
531 if (SSL_IS_DTLS(s)) {
532 if (ginfo->mindtls < 0 || ginfo->maxdtls < 0)
9aaecbfc 533 return 0;
9d2d857f
MC		 534 if (ginfo->maxdtls == 0)
535 ret = 1;
536 else
537 ret = DTLS_VERSION_LE(minversion, ginfo->maxdtls);
538 if (ginfo->mindtls > 0)
539 ret &= DTLS_VERSION_GE(maxversion, ginfo->mindtls);
540 } else {
541 if (ginfo->mintls < 0 || ginfo->maxtls < 0)
542 return 0;
543 if (ginfo->maxtls == 0)
544 ret = 1;
545 else
546 ret = (minversion <= ginfo->maxtls);
547 if (ginfo->mintls > 0)
548 ret &= (maxversion >= ginfo->mintls);
9aaecbfc 549 }
9d2d857f
MC		 550
551 return ret;
9aaecbfc 552}
553
dbc6268f
MC		 554/* See if group is allowed by security callback */
555int tls_group_allowed(SSL *s, uint16_t group, int op)
0f113f3e 556{
9d2d857f 557 const TLS_GROUP_INFO *ginfo = tls1_group_id_lookup(s->ctx, group);
dbc6268f 558 unsigned char gtmp[2];
5ce5f787 559
dbc6268f 560 if (ginfo == NULL)
0f113f3e 561 return 0;
9d2d857f 562
dbc6268f
MC		 563 gtmp[0] = group >> 8;
564 gtmp[1] = group & 0xff;
9d2d857f 565 return ssl_security(s, op, ginfo->secbits,
260009d8 566 tls1_group_id2nid(ginfo->group_id, 0), (void *)gtmp);
0f113f3e 567}
b362ccab 568
b50951d3
DSH		 569/* Return 1 if "id" is in "list" */
570static int tls1_in_list(uint16_t id, const uint16_t *list, size_t listlen)
571{
572 size_t i;
573 for (i = 0; i < listlen; i++)
574 if (list[i] == id)
575 return 1;
576 return 0;
577}
578
1d97c843 579/*-
8841154a 580 * For nmatch >= 0, return the id of the |nmatch|th shared group or 0
6977e8ee
KR		 581 * if there is no match.
582 * For nmatch == -1, return number of matches
8841154a 583 * For nmatch == -2, return the id of the group to use for
b50951d3 584 * a tmp key, or 0 if there is no match.
d0595f17 585 */
8841154a 586uint16_t tls1_shared_group(SSL *s, int nmatch)
0f113f3e 587{
9e84a42d 588 const uint16_t *pref, *supp;
b50951d3 589 size_t num_pref, num_supp, i;
0f113f3e 590 int k;
3e373518 591
0f113f3e
MC		 592 /* Can't do anything on client side */
593 if (s->server == 0)
8841154a 594 return 0;
0f113f3e
MC		 595 if (nmatch == -2) {
596 if (tls1_suiteb(s)) {
597 /*
598 * For Suite B ciphersuite determines curve: we already know
599 * these are acceptable due to previous checks.
600 */
555cbb32 601 unsigned long cid = s->s3.tmp.new_cipher->id;
3e373518 602
0f113f3e 603 if (cid == TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256)
8841154a 604 return TLSEXT_curve_P_256;
0f113f3e 605 if (cid == TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384)
8841154a 606 return TLSEXT_curve_P_384;
0f113f3e 607 /* Should never happen */
8841154a 608 return 0;
0f113f3e
MC		 609 }
610 /* If not Suite B just return first preference shared curve */
611 nmatch = 0;
612 }
613 /*
ff6d20a6
DSH		 614 * If server preference set, our groups are the preference order
615 * otherwise peer decides.
0f113f3e 616 */
ff6d20a6
DSH		 617 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE) {
618 tls1_get_supported_groups(s, &pref, &num_pref);
619 tls1_get_peer_groups(s, &supp, &num_supp);
620 } else {
621 tls1_get_peer_groups(s, &pref, &num_pref);
622 tls1_get_supported_groups(s, &supp, &num_supp);
623 }
3c06513f 624
9e84a42d
DSH		 625 for (k = 0, i = 0; i < num_pref; i++) {
626 uint16_t id = pref[i];
3e373518 627
b50951d3 628 if (!tls1_in_list(id, supp, num_supp)
dbc6268f 629 || !tls_group_allowed(s, id, SSL_SECOP_CURVE_SHARED))
0f113f3e 630 continue;
b50951d3
DSH		 631 if (nmatch == k)
632 return id;
633 k++;
0f113f3e
MC		 634 }
635 if (nmatch == -1)
636 return k;
637 /* Out of range (nmatch > k). */
8841154a 638 return 0;
0f113f3e 639}
d0595f17 640
9e84a42d 641int tls1_set_groups(uint16_t **pext, size_t *pextlen,
de4d764e 642 int *groups, size_t ngroups)
0f113f3e 643{
9e84a42d 644 uint16_t *glist;
0f113f3e
MC		 645 size_t i;
646 /*
9aaecbfc 647 * Bitmap of groups included to detect duplicates: two variables are added
648 * to detect duplicates as some values are more than 32.
0f113f3e 649 */
9aaecbfc 650 unsigned long *dup_list = NULL;
651 unsigned long dup_list_egrp = 0;
652 unsigned long dup_list_dhgrp = 0;
cdb10bae 653
680bd131 654 if (ngroups == 0) {
6849b73c 655 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
680bd131
MC		 656 return 0;
657 }
cdb10bae 658 if ((glist = OPENSSL_malloc(ngroups * sizeof(*glist))) == NULL) {
6849b73c 659 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 660 return 0;
cdb10bae 661 }
9e84a42d 662 for (i = 0; i < ngroups; i++) {
0f113f3e 663 unsigned long idmask;
9e84a42d 664 uint16_t id;
4a1b4280 665 id = tls1_nid2group_id(groups[i]);
9aaecbfc 666 if ((id & 0x00FF) >= (sizeof(unsigned long) * 8))
667 goto err;
668 idmask = 1L << (id & 0x00FF);
669 dup_list = (id < 0x100) ? &dup_list_egrp : &dup_list_dhgrp;
670 if (!id || ((*dup_list) & idmask))
671 goto err;
672 *dup_list |= idmask;
9e84a42d 673 glist[i] = id;
0f113f3e 674 }
b548a1f1 675 OPENSSL_free(*pext);
de4d764e 676 *pext = glist;
9e84a42d 677 *pextlen = ngroups;
0f113f3e 678 return 1;
9aaecbfc 679err:
680 OPENSSL_free(glist);
681 return 0;
0f113f3e
MC		 682}
683
9d2d857f
MC		 684/* TODO(3.0): An arbitrary amount for now. Take another look at this */
685# define MAX_GROUPLIST 40
0f113f3e
MC		 686
687typedef struct {
260009d8
MC		 688 SSL_CTX *ctx;
689 size_t gidcnt;
690 uint16_t gid_arr[MAX_GROUPLIST];
691} gid_cb_st;
d0595f17 692
260009d8 693static int gid_cb(const char *elem, int len, void *arg)
0f113f3e 694{
260009d8 695 gid_cb_st *garg = arg;
0f113f3e 696 size_t i;
260009d8 697 uint16_t gid = 0;
0f113f3e 698 char etmp[20];
260009d8 699
2747d73c
KR		 700 if (elem == NULL)
701 return 0;
260009d8 702 if (garg->gidcnt == MAX_GROUPLIST)
0f113f3e
MC		 703 return 0;
704 if (len > (int)(sizeof(etmp) - 1))
705 return 0;
706 memcpy(etmp, elem, len);
707 etmp[len] = 0;
260009d8
MC		 708
709 gid = tls1_group_name2id(garg->ctx, etmp);
710 if (gid == 0)
0f113f3e 711 return 0;
260009d8
MC		 712 for (i = 0; i < garg->gidcnt; i++)
713 if (garg->gid_arr[i] == gid)
0f113f3e 714 return 0;
260009d8 715 garg->gid_arr[garg->gidcnt++] = gid;
0f113f3e
MC		 716 return 1;
717}
718
260009d8
MC		 719/* Set groups based on a colon separated list */
720int tls1_set_groups_list(SSL_CTX *ctx, uint16_t **pext, size_t *pextlen,
721 const char *str)
0f113f3e 722{
260009d8
MC		 723 gid_cb_st gcb;
724 uint16_t *tmparr;
725
726 gcb.gidcnt = 0;
727 gcb.ctx = ctx;
728 if (!CONF_parse_list(str, ':', 1, gid_cb, &gcb))
0f113f3e
MC		 729 return 0;
730 if (pext == NULL)
731 return 1;
260009d8
MC		 732
733 /*
734 * gid_cb ensurse there are no duplicates so we can just go ahead and set
735 * the result
736 */
737 tmparr = OPENSSL_memdup(gcb.gid_arr, gcb.gidcnt * sizeof(*tmparr));
738 if (tmparr == NULL)
739 return 0;
740 *pext = tmparr;
741 *pextlen = gcb.gidcnt;
742 return 1;
0f113f3e 743}
b50951d3 744
4a1b4280 745/* Check a group id matches preferences */
dcf8b01f 746int tls1_check_group_id(SSL *s, uint16_t group_id, int check_own_groups)
4a1b4280
DSH		 747 {
748 const uint16_t *groups;
b50951d3 749 size_t groups_len;
4a1b4280
DSH		 750
751 if (group_id == 0)
752 return 0;
753
6447e818 754 /* Check for Suite B compliance */
555cbb32
TS		 755 if (tls1_suiteb(s) && s->s3.tmp.new_cipher != NULL) {
756 unsigned long cid = s->s3.tmp.new_cipher->id;
6447e818
DSH		 757
758 if (cid == TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256) {
759 if (group_id != TLSEXT_curve_P_256)
760 return 0;
761 } else if (cid == TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384) {
762 if (group_id != TLSEXT_curve_P_384)
763 return 0;
764 } else {
765 /* Should never happen */
766 return 0;
767 }
768 }
b50951d3 769
dcf8b01f
MC		 770 if (check_own_groups) {
771 /* Check group is one of our preferences */
772 tls1_get_supported_groups(s, &groups, &groups_len);
773 if (!tls1_in_list(group_id, groups, groups_len))
774 return 0;
775 }
4a1b4280 776
dbc6268f 777 if (!tls_group_allowed(s, group_id, SSL_SECOP_CURVE_CHECK))
6447e818
DSH		 778 return 0;
779
4a1b4280
DSH		 780 /* For clients, nothing more to check */
781 if (!s->server)
782 return 1;
783
784 /* Check group is one of peers preferences */
ff6d20a6 785 tls1_get_peer_groups(s, &groups, &groups_len);
4a1b4280
DSH		 786
787 /*
788 * RFC 4492 does not require the supported elliptic curves extension
789 * so if it is not sent we can just choose any curve.
790 * It is invalid to send an empty list in the supported groups
791 * extension, so groups_len == 0 always means no extension.
792 */
793 if (groups_len == 0)
794 return 1;
b50951d3 795 return tls1_in_list(group_id, groups, groups_len);
0f113f3e 796}
d61ff83b 797
dbc6268f 798#ifndef OPENSSL_NO_EC
7da160b0
MC		 799void tls1_get_formatlist(SSL *s, const unsigned char **pformats,
800 size_t *num_formats)
0f113f3e
MC		 801{
802 /*
803 * If we have a custom point format list use it otherwise use default
804 */
aff8c126
RS		 805 if (s->ext.ecpointformats) {
806 *pformats = s->ext.ecpointformats;
807 *num_formats = s->ext.ecpointformats_len;
0f113f3e
MC		 808 } else {
809 *pformats = ecformats_default;
810 /* For Suite B we don't support char2 fields */
811 if (tls1_suiteb(s))
812 *num_formats = sizeof(ecformats_default) - 1;
813 else
814 *num_formats = sizeof(ecformats_default);
815 }
816}
817
dbc6268f
MC		 818/* Check a key is compatible with compression extension */
819static int tls1_check_pkey_comp(SSL *s, EVP_PKEY *pkey)
820{
821 const EC_KEY *ec;
822 const EC_GROUP *grp;
823 unsigned char comp_id;
824 size_t i;
825
826 /* If not an EC key nothing to check */
c2041da8 827 if (!EVP_PKEY_is_a(pkey, "EC"))
dbc6268f
MC		 828 return 1;
829 ec = EVP_PKEY_get0_EC_KEY(pkey);
830 grp = EC_KEY_get0_group(ec);
831
832 /* Get required compression id */
833 if (EC_KEY_get_conv_form(ec) == POINT_CONVERSION_UNCOMPRESSED) {
834 comp_id = TLSEXT_ECPOINTFORMAT_uncompressed;
835 } else if (SSL_IS_TLS13(s)) {
836 /*
837 * ec_point_formats extension is not used in TLSv1.3 so we ignore
838 * this check.
839 */
840 return 1;
841 } else {
23ccae80 842 int field_type = EC_GROUP_get_field_type(grp);
dbc6268f
MC		 843
844 if (field_type == NID_X9_62_prime_field)
845 comp_id = TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime;
846 else if (field_type == NID_X9_62_characteristic_two_field)
847 comp_id = TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2;
848 else
849 return 0;
850 }
851 /*
852 * If point formats extension present check it, otherwise everything is
853 * supported (see RFC4492).
854 */
cd0fb43c 855 if (s->ext.peer_ecpointformats == NULL)
dbc6268f
MC		 856 return 1;
857
cd0fb43c
MC		 858 for (i = 0; i < s->ext.peer_ecpointformats_len; i++) {
859 if (s->ext.peer_ecpointformats[i] == comp_id)
dbc6268f
MC		 860 return 1;
861 }
862 return 0;
863}
864
865/* Return group id of a key */
866static uint16_t tls1_get_group_id(EVP_PKEY *pkey)
867{
c2041da8 868 int curve_nid = evp_pkey_get_EC_KEY_curve_nid(pkey);
dbc6268f 869
c2041da8 870 if (curve_nid == NID_undef)
dbc6268f 871 return 0;
c2041da8 872 return tls1_nid2group_id(curve_nid);
dbc6268f
MC		 873}
874
0f113f3e
MC		 875/*
876 * Check cert parameters compatible with extensions: currently just checks EC
877 * certificates have compatible curves and compression.
d61ff83b 878 */
9195ddcd 879static int tls1_check_cert_param(SSL *s, X509 *x, int check_ee_md)
0f113f3e 880{
4a1b4280 881 uint16_t group_id;
0f113f3e 882 EVP_PKEY *pkey;
8382fd3a 883 pkey = X509_get0_pubkey(x);
4a1b4280 884 if (pkey == NULL)
0f113f3e
MC		 885 return 0;
886 /* If not EC nothing to do */
c2041da8 887 if (!EVP_PKEY_is_a(pkey, "EC"))
0f113f3e 888 return 1;
4a1b4280
DSH		 889 /* Check compression */
890 if (!tls1_check_pkey_comp(s, pkey))
0f113f3e 891 return 0;
4a1b4280 892 group_id = tls1_get_group_id(pkey);
dcf8b01f
MC		 893 /*
894 * For a server we allow the certificate to not be in our list of supported
895 * groups.
896 */
897 if (!tls1_check_group_id(s, group_id, !s->server))
0f113f3e
MC		 898 return 0;
899 /*
900 * Special case for suite B. We *MUST* sign using SHA256+P-256 or
9195ddcd 901 * SHA384+P-384.
0f113f3e 902 */
9195ddcd 903 if (check_ee_md && tls1_suiteb(s)) {
0f113f3e
MC		 904 int check_md;
905 size_t i;
9e84a42d 906
0f113f3e 907 /* Check to see we have necessary signing algorithm */
4a1b4280 908 if (group_id == TLSEXT_curve_P_256)
0f113f3e 909 check_md = NID_ecdsa_with_SHA256;
4a1b4280 910 else if (group_id == TLSEXT_curve_P_384)
0f113f3e
MC		 911 check_md = NID_ecdsa_with_SHA384;
912 else
913 return 0; /* Should never happen */
29948ac8
BK		 914 for (i = 0; i < s->shared_sigalgslen; i++) {
915 if (check_md == s->shared_sigalgs[i]->sigandhash)
4a1b4280
DSH		 916 return 1;;
917 }
918 return 0;
0f113f3e 919 }
4a1b4280 920 return 1;
0f113f3e
MC		 921}
922
6977e8ee 923/*
8483a003 924 * tls1_check_ec_tmp_key - Check EC temporary key compatibility
6977e8ee
KR		 925 * @s: SSL connection
926 * @cid: Cipher ID we're considering using
927 *
928 * Checks that the kECDHE cipher suite we're considering using
929 * is compatible with the client extensions.
930 *
931 * Returns 0 when the cipher can't be used or 1 when it can.
932 */
2ea80354 933int tls1_check_ec_tmp_key(SSL *s, unsigned long cid)
0f113f3e 934{
4a1b4280
DSH		 935 /* If not Suite B just need a shared group */
936 if (!tls1_suiteb(s))
937 return tls1_shared_group(s, 0) != 0;
0f113f3e
MC		 938 /*
939 * If Suite B, AES128 MUST use P-256 and AES256 MUST use P-384, no other
940 * curves permitted.
941 */
4a1b4280 942 if (cid == TLS1_CK_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256)
dcf8b01f 943 return tls1_check_group_id(s, TLSEXT_curve_P_256, 1);
4a1b4280 944 if (cid == TLS1_CK_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384)
dcf8b01f 945 return tls1_check_group_id(s, TLSEXT_curve_P_384, 1);
4a1b4280
DSH		 946
947 return 0;
0f113f3e 948}
d0595f17 949
14536c8c
DSH		 950#else
951
952static int tls1_check_cert_param(SSL *s, X509 *x, int set_ee_md)
0f113f3e
MC		 953{
954 return 1;
955}
14536c8c 956
0f113f3e 957#endif /* OPENSSL_NO_EC */
f1fd4544 958
703bcee0 959/* Default sigalg schemes */
98c792d1 960static const uint16_t tls12_sigalgs[] = {
703bcee0
MC		 961#ifndef OPENSSL_NO_EC
962 TLSEXT_SIGALG_ecdsa_secp256r1_sha256,
963 TLSEXT_SIGALG_ecdsa_secp384r1_sha384,
964 TLSEXT_SIGALG_ecdsa_secp521r1_sha512,
3d234c9e 965 TLSEXT_SIGALG_ed25519,
0e1d6ecf 966 TLSEXT_SIGALG_ed448,
e481f9b9 967#endif
0f113f3e 968
f55e99f7
BK		 969 TLSEXT_SIGALG_rsa_pss_pss_sha256,
970 TLSEXT_SIGALG_rsa_pss_pss_sha384,
971 TLSEXT_SIGALG_rsa_pss_pss_sha512,
972 TLSEXT_SIGALG_rsa_pss_rsae_sha256,
973 TLSEXT_SIGALG_rsa_pss_rsae_sha384,
974 TLSEXT_SIGALG_rsa_pss_rsae_sha512,
536199ec 975
703bcee0
MC		 976 TLSEXT_SIGALG_rsa_pkcs1_sha256,
977 TLSEXT_SIGALG_rsa_pkcs1_sha384,
978 TLSEXT_SIGALG_rsa_pkcs1_sha512,
0f113f3e 979
5eeb6c6e 980#ifndef OPENSSL_NO_EC
d8311fc9 981 TLSEXT_SIGALG_ecdsa_sha224,
42ab2230 982 TLSEXT_SIGALG_ecdsa_sha1,
5eeb6c6e 983#endif
d8311fc9 984 TLSEXT_SIGALG_rsa_pkcs1_sha224,
42ab2230 985 TLSEXT_SIGALG_rsa_pkcs1_sha1,
5eeb6c6e 986#ifndef OPENSSL_NO_DSA
d8311fc9 987 TLSEXT_SIGALG_dsa_sha224,
42ab2230
MC		 988 TLSEXT_SIGALG_dsa_sha1,
989
703bcee0
MC		 990 TLSEXT_SIGALG_dsa_sha256,
991 TLSEXT_SIGALG_dsa_sha384,
41f10305
DB		 992 TLSEXT_SIGALG_dsa_sha512,
993#endif
994#ifndef OPENSSL_NO_GOST
6f892296
NM		 995 TLSEXT_SIGALG_gostr34102012_256_intrinsic,
996 TLSEXT_SIGALG_gostr34102012_512_intrinsic,
41f10305
DB		 997 TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256,
998 TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512,
999 TLSEXT_SIGALG_gostr34102001_gostr3411,
5eeb6c6e 1000#endif
fc101f88 1001};
0f113f3e 1002
e481f9b9 1003#ifndef OPENSSL_NO_EC
98c792d1 1004static const uint16_t suiteb_sigalgs[] = {
703bcee0
MC		 1005 TLSEXT_SIGALG_ecdsa_secp256r1_sha256,
1006 TLSEXT_SIGALG_ecdsa_secp384r1_sha384
2ea80354 1007};
e481f9b9 1008#endif
aff8c126 1009
7a531ee4 1010static const SIGALG_LOOKUP sigalg_lookup_tbl[] = {
5eeb6c6e 1011#ifndef OPENSSL_NO_EC
edbfba1a 1012 {"ecdsa_secp256r1_sha256", TLSEXT_SIGALG_ecdsa_secp256r1_sha256,
17ae384e 1013 NID_sha256, SSL_MD_SHA256_IDX, EVP_PKEY_EC, SSL_PKEY_ECC,
263ff2c9 1014 NID_ecdsa_with_SHA256, NID_X9_62_prime256v1, 1},
edbfba1a 1015 {"ecdsa_secp384r1_sha384", TLSEXT_SIGALG_ecdsa_secp384r1_sha384,
17ae384e 1016 NID_sha384, SSL_MD_SHA384_IDX, EVP_PKEY_EC, SSL_PKEY_ECC,
263ff2c9 1017 NID_ecdsa_with_SHA384, NID_secp384r1, 1},
edbfba1a 1018 {"ecdsa_secp521r1_sha512", TLSEXT_SIGALG_ecdsa_secp521r1_sha512,
17ae384e 1019 NID_sha512, SSL_MD_SHA512_IDX, EVP_PKEY_EC, SSL_PKEY_ECC,
263ff2c9 1020 NID_ecdsa_with_SHA512, NID_secp521r1, 1},
b04d4e38 1021 {"ed25519", TLSEXT_SIGALG_ed25519,
d2916a5b 1022 NID_undef, -1, EVP_PKEY_ED25519, SSL_PKEY_ED25519,
263ff2c9 1023 NID_undef, NID_undef, 1},
0e1d6ecf
MC		 1024 {"ed448", TLSEXT_SIGALG_ed448,
1025 NID_undef, -1, EVP_PKEY_ED448, SSL_PKEY_ED448,
263ff2c9 1026 NID_undef, NID_undef, 1},
d8311fc9
MC		 1027 {NULL, TLSEXT_SIGALG_ecdsa_sha224,
1028 NID_sha224, SSL_MD_SHA224_IDX, EVP_PKEY_EC, SSL_PKEY_ECC,
263ff2c9 1029 NID_ecdsa_with_SHA224, NID_undef, 1},
edbfba1a 1030 {NULL, TLSEXT_SIGALG_ecdsa_sha1,
17ae384e 1031 NID_sha1, SSL_MD_SHA1_IDX, EVP_PKEY_EC, SSL_PKEY_ECC,
263ff2c9 1032 NID_ecdsa_with_SHA1, NID_undef, 1},
5eeb6c6e 1033#endif
f55e99f7
BK		 1034 {"rsa_pss_rsae_sha256", TLSEXT_SIGALG_rsa_pss_rsae_sha256,
1035 NID_sha256, SSL_MD_SHA256_IDX, EVP_PKEY_RSA_PSS, SSL_PKEY_RSA,
263ff2c9 1036 NID_undef, NID_undef, 1},
f55e99f7
BK		 1037 {"rsa_pss_rsae_sha384", TLSEXT_SIGALG_rsa_pss_rsae_sha384,
1038 NID_sha384, SSL_MD_SHA384_IDX, EVP_PKEY_RSA_PSS, SSL_PKEY_RSA,
263ff2c9 1039 NID_undef, NID_undef, 1},
f55e99f7
BK		 1040 {"rsa_pss_rsae_sha512", TLSEXT_SIGALG_rsa_pss_rsae_sha512,
1041 NID_sha512, SSL_MD_SHA512_IDX, EVP_PKEY_RSA_PSS, SSL_PKEY_RSA,
263ff2c9 1042 NID_undef, NID_undef, 1},
f55e99f7 1043 {"rsa_pss_pss_sha256", TLSEXT_SIGALG_rsa_pss_pss_sha256,
17ae384e 1044 NID_sha256, SSL_MD_SHA256_IDX, EVP_PKEY_RSA_PSS, SSL_PKEY_RSA_PSS_SIGN,
263ff2c9 1045 NID_undef, NID_undef, 1},
f55e99f7 1046 {"rsa_pss_pss_sha384", TLSEXT_SIGALG_rsa_pss_pss_sha384,
17ae384e 1047 NID_sha384, SSL_MD_SHA384_IDX, EVP_PKEY_RSA_PSS, SSL_PKEY_RSA_PSS_SIGN,
263ff2c9 1048 NID_undef, NID_undef, 1},
f55e99f7 1049 {"rsa_pss_pss_sha512", TLSEXT_SIGALG_rsa_pss_pss_sha512,
17ae384e 1050 NID_sha512, SSL_MD_SHA512_IDX, EVP_PKEY_RSA_PSS, SSL_PKEY_RSA_PSS_SIGN,
263ff2c9 1051 NID_undef, NID_undef, 1},
edbfba1a 1052 {"rsa_pkcs1_sha256", TLSEXT_SIGALG_rsa_pkcs1_sha256,
d0ff28f8 1053 NID_sha256, SSL_MD_SHA256_IDX, EVP_PKEY_RSA, SSL_PKEY_RSA,
263ff2c9 1054 NID_sha256WithRSAEncryption, NID_undef, 1},
edbfba1a 1055 {"rsa_pkcs1_sha384", TLSEXT_SIGALG_rsa_pkcs1_sha384,
d0ff28f8 1056 NID_sha384, SSL_MD_SHA384_IDX, EVP_PKEY_RSA, SSL_PKEY_RSA,
263ff2c9 1057 NID_sha384WithRSAEncryption, NID_undef, 1},
edbfba1a 1058 {"rsa_pkcs1_sha512", TLSEXT_SIGALG_rsa_pkcs1_sha512,
d0ff28f8 1059 NID_sha512, SSL_MD_SHA512_IDX, EVP_PKEY_RSA, SSL_PKEY_RSA,
263ff2c9 1060 NID_sha512WithRSAEncryption, NID_undef, 1},
d8311fc9
MC		 1061 {"rsa_pkcs1_sha224", TLSEXT_SIGALG_rsa_pkcs1_sha224,
1062 NID_sha224, SSL_MD_SHA224_IDX, EVP_PKEY_RSA, SSL_PKEY_RSA,
263ff2c9 1063 NID_sha224WithRSAEncryption, NID_undef, 1},
edbfba1a 1064 {"rsa_pkcs1_sha1", TLSEXT_SIGALG_rsa_pkcs1_sha1,
d0ff28f8 1065 NID_sha1, SSL_MD_SHA1_IDX, EVP_PKEY_RSA, SSL_PKEY_RSA,
263ff2c9 1066 NID_sha1WithRSAEncryption, NID_undef, 1},
5eeb6c6e 1067#ifndef OPENSSL_NO_DSA
edbfba1a 1068 {NULL, TLSEXT_SIGALG_dsa_sha256,
17ae384e 1069 NID_sha256, SSL_MD_SHA256_IDX, EVP_PKEY_DSA, SSL_PKEY_DSA_SIGN,
263ff2c9 1070 NID_dsa_with_SHA256, NID_undef, 1},
edbfba1a 1071 {NULL, TLSEXT_SIGALG_dsa_sha384,
17ae384e 1072 NID_sha384, SSL_MD_SHA384_IDX, EVP_PKEY_DSA, SSL_PKEY_DSA_SIGN,
263ff2c9 1073 NID_undef, NID_undef, 1},
edbfba1a 1074 {NULL, TLSEXT_SIGALG_dsa_sha512,
17ae384e 1075 NID_sha512, SSL_MD_SHA512_IDX, EVP_PKEY_DSA, SSL_PKEY_DSA_SIGN,
263ff2c9 1076 NID_undef, NID_undef, 1},
d8311fc9
MC		 1077 {NULL, TLSEXT_SIGALG_dsa_sha224,
1078 NID_sha224, SSL_MD_SHA224_IDX, EVP_PKEY_DSA, SSL_PKEY_DSA_SIGN,
263ff2c9 1079 NID_undef, NID_undef, 1},
edbfba1a 1080 {NULL, TLSEXT_SIGALG_dsa_sha1,
17ae384e 1081 NID_sha1, SSL_MD_SHA1_IDX, EVP_PKEY_DSA, SSL_PKEY_DSA_SIGN,
263ff2c9 1082 NID_dsaWithSHA1, NID_undef, 1},
5eeb6c6e
MC		 1083#endif
1084#ifndef OPENSSL_NO_GOST
6f892296
NM		 1085 {NULL, TLSEXT_SIGALG_gostr34102012_256_intrinsic,
1086 NID_id_GostR3411_2012_256, SSL_MD_GOST12_256_IDX,
1087 NID_id_GostR3410_2012_256, SSL_PKEY_GOST12_256,
263ff2c9 1088 NID_undef, NID_undef, 1},
6f892296
NM		 1089 {NULL, TLSEXT_SIGALG_gostr34102012_512_intrinsic,
1090 NID_id_GostR3411_2012_512, SSL_MD_GOST12_512_IDX,
1091 NID_id_GostR3410_2012_512, SSL_PKEY_GOST12_512,
263ff2c9 1092 NID_undef, NID_undef, 1},
edbfba1a 1093 {NULL, TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256,
17ae384e
DSH		 1094 NID_id_GostR3411_2012_256, SSL_MD_GOST12_256_IDX,
1095 NID_id_GostR3410_2012_256, SSL_PKEY_GOST12_256,
263ff2c9 1096 NID_undef, NID_undef, 1},
edbfba1a 1097 {NULL, TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512,
17ae384e
DSH		 1098 NID_id_GostR3411_2012_512, SSL_MD_GOST12_512_IDX,
1099 NID_id_GostR3410_2012_512, SSL_PKEY_GOST12_512,
263ff2c9 1100 NID_undef, NID_undef, 1},
edbfba1a 1101 {NULL, TLSEXT_SIGALG_gostr34102001_gostr3411,
17ae384e
DSH		 1102 NID_id_GostR3411_94, SSL_MD_GOST94_IDX,
1103 NID_id_GostR3410_2001, SSL_PKEY_GOST01,
263ff2c9 1104 NID_undef, NID_undef, 1}
5eeb6c6e 1105#endif
703bcee0 1106};
0972bc5c
DSH		 1107/* Legacy sigalgs for TLS < 1.2 RSA TLS signatures */
1108static const SIGALG_LOOKUP legacy_rsa_sigalg = {
1109 "rsa_pkcs1_md5_sha1", 0,
1110 NID_md5_sha1, SSL_MD_MD5_SHA1_IDX,
1111 EVP_PKEY_RSA, SSL_PKEY_RSA,
263ff2c9 1112 NID_undef, NID_undef, 1
0972bc5c
DSH		 1113};
1114
1115/*
1116 * Default signature algorithm values used if signature algorithms not present.
1117 * From RFC5246. Note: order must match certificate index order.
1118 */
1119static const uint16_t tls_default_sigalg[] = {
1120 TLSEXT_SIGALG_rsa_pkcs1_sha1, /* SSL_PKEY_RSA */
045d078a 1121 0, /* SSL_PKEY_RSA_PSS_SIGN */
0972bc5c
DSH		 1122 TLSEXT_SIGALG_dsa_sha1, /* SSL_PKEY_DSA_SIGN */
1123 TLSEXT_SIGALG_ecdsa_sha1, /* SSL_PKEY_ECC */
1124 TLSEXT_SIGALG_gostr34102001_gostr3411, /* SSL_PKEY_GOST01 */
6f892296
NM		 1125 TLSEXT_SIGALG_gostr34102012_256_intrinsic, /* SSL_PKEY_GOST12_256 */
1126 TLSEXT_SIGALG_gostr34102012_512_intrinsic, /* SSL_PKEY_GOST12_512 */
0e1d6ecf
MC		 1127 0, /* SSL_PKEY_ED25519 */
1128 0, /* SSL_PKEY_ED448 */
0972bc5c 1129};
703bcee0 1130
263ff2c9
MC		 1131int ssl_setup_sig_algs(SSL_CTX *ctx)
1132{
1133 size_t i;
1134 const SIGALG_LOOKUP *lu;
1135 SIGALG_LOOKUP *cache
1136 = OPENSSL_malloc(sizeof(*lu) * OSSL_NELEM(sigalg_lookup_tbl));
1137 EVP_PKEY *tmpkey = EVP_PKEY_new();
1138 int ret = 0;
1139
1140 if (cache == NULL || tmpkey == NULL)
1141 goto err;
1142
1143 ERR_set_mark();
1144 for (i = 0, lu = sigalg_lookup_tbl;
1145 i < OSSL_NELEM(sigalg_lookup_tbl); lu++, i++) {
1146 EVP_PKEY_CTX *pctx;
1147
1148 cache[i] = *lu;
1149
1150 /*
1151 * Check hash is available.
1152 * TODO(3.0): This test is not perfect. A provider could have support
1153 * for a signature scheme, but not a particular hash. However the hash
1154 * could be available from some other loaded provider. In that case it
1155 * could be that the signature is available, and the hash is available
1156 * independently - but not as a combination. We ignore this for now.
1157 */
1158 if (lu->hash != NID_undef
1159 && ctx->ssl_digest_methods[lu->hash_idx] == NULL) {
1160 cache[i].enabled = 0;
1161 continue;
1162 }
1163
1164 if (!EVP_PKEY_set_type(tmpkey, lu->sig)) {
1165 cache[i].enabled = 0;
1166 continue;
1167 }
1168 pctx = EVP_PKEY_CTX_new_from_pkey(ctx->libctx, tmpkey, ctx->propq);
1169 /* If unable to create pctx we assume the sig algorithm is unavailable */
1170 if (pctx == NULL)
1171 cache[i].enabled = 0;
1172 EVP_PKEY_CTX_free(pctx);
1173 }
1174 ERR_pop_to_mark();
1175 ctx->sigalg_lookup_cache = cache;
1176 cache = NULL;
1177
1178 ret = 1;
1179 err:
1180 OPENSSL_free(cache);
1181 EVP_PKEY_free(tmpkey);
1182 return ret;
1183}
1184
4d43ee28 1185/* Lookup TLS signature algorithm */
263ff2c9 1186static const SIGALG_LOOKUP *tls1_lookup_sigalg(const SSL *s, uint16_t sigalg)
703bcee0
MC		 1187{
1188 size_t i;
263ff2c9 1189 const SIGALG_LOOKUP *lu;
703bcee0 1190
263ff2c9
MC		 1191 for (i = 0, lu = s->ctx->sigalg_lookup_cache;
1192 /* cache should have the same number of elements as sigalg_lookup_tbl */
1193 i < OSSL_NELEM(sigalg_lookup_tbl);
1194 lu++, i++) {
1195 if (lu->sigalg == sigalg)
1196 return lu;
703bcee0 1197 }
4d43ee28
DSH		 1198 return NULL;
1199}
168067b6 1200/* Lookup hash: return 0 if invalid or not enabled */
c8f6c28a 1201int tls1_lookup_md(SSL_CTX *ctx, const SIGALG_LOOKUP *lu, const EVP_MD **pmd)
168067b6
DSH		 1202{
1203 const EVP_MD *md;
1204 if (lu == NULL)
1205 return 0;
1206 /* lu->hash == NID_undef means no associated digest */
1207 if (lu->hash == NID_undef) {
1208 md = NULL;
1209 } else {
c8f6c28a 1210 md = ssl_md(ctx, lu->hash_idx);
168067b6
DSH		 1211 if (md == NULL)
1212 return 0;
1213 }
1214 if (pmd)
1215 *pmd = md;
1216 return 1;
1217}
1218
0fe3db25
NR		 1219/*
1220 * Check if key is large enough to generate RSA-PSS signature.
1221 *
1222 * The key must greater than or equal to 2 * hash length + 2.
1223 * SHA512 has a hash length of 64 bytes, which is incompatible
1224 * with a 128 byte (1024 bit) key.
1225 */
1226#define RSA_PSS_MINIMUM_KEY_SIZE(md) (2 * EVP_MD_size(md) + 2)
c5f87134 1227static int rsa_pss_check_min_key_size(SSL_CTX *ctx, const EVP_PKEY *pkey,
c8f6c28a 1228 const SIGALG_LOOKUP *lu)
0fe3db25
NR		 1229{
1230 const EVP_MD *md;
1231
c5f87134 1232 if (pkey == NULL)
0fe3db25 1233 return 0;
c8f6c28a 1234 if (!tls1_lookup_md(ctx, lu, &md) || md == NULL)
0fe3db25 1235 return 0;
c5f87134 1236 if (EVP_PKEY_size(pkey) < RSA_PSS_MINIMUM_KEY_SIZE(md))
0fe3db25
NR		 1237 return 0;
1238 return 1;
1239}
1240
0972bc5c 1241/*
b0031e5d
KR		 1242 * Returns a signature algorithm when the peer did not send a list of supported
1243 * signature algorithms. The signature algorithm is fixed for the certificate
1244 * type. |idx| is a certificate type index (SSL_PKEY_*). When |idx| is -1 the
1245 * certificate type from |s| will be used.
1246 * Returns the signature algorithm to use, or NULL on error.
0972bc5c
DSH		 1247 */
1248static const SIGALG_LOOKUP *tls1_get_legacy_sigalg(const SSL *s, int idx)
1249{
7f6b466b
DSH		 1250 if (idx == -1) {
1251 if (s->server) {
1252 size_t i;
1253
1254 /* Work out index corresponding to ciphersuite */
1255 for (i = 0; i < SSL_PKEY_NUM; i++) {
1256 const SSL_CERT_LOOKUP *clu = ssl_cert_lookup_by_idx(i);
1257
555cbb32 1258 if (clu->amask & s->s3.tmp.new_cipher->algorithm_auth) {
7f6b466b
DSH		 1259 idx = i;
1260 break;
1261 }
1262 }
1f65c045
DB		 1263
1264 /*
1265 * Some GOST ciphersuites allow more than one signature algorithms
1266 * */
555cbb32 1267 if (idx == SSL_PKEY_GOST01 && s->s3.tmp.new_cipher->algorithm_auth != SSL_aGOST01) {
1f65c045
DB		 1268 int real_idx;
1269
1270 for (real_idx = SSL_PKEY_GOST12_512; real_idx >= SSL_PKEY_GOST01;
1271 real_idx--) {
1272 if (s->cert->pkeys[real_idx].privatekey != NULL) {
1273 idx = real_idx;
1274 break;
1275 }
1276 }
1277 }
5a5530a2
DB		 1278 /*
1279 * As both SSL_PKEY_GOST12_512 and SSL_PKEY_GOST12_256 indices can be used
1280 * with new (aGOST12-only) ciphersuites, we should find out which one is available really.
1281 */
1282 else if (idx == SSL_PKEY_GOST12_256) {
1283 int real_idx;
1284
1285 for (real_idx = SSL_PKEY_GOST12_512; real_idx >= SSL_PKEY_GOST12_256;
1286 real_idx--) {
1287 if (s->cert->pkeys[real_idx].privatekey != NULL) {
1288 idx = real_idx;
1289 break;
1290 }
1291 }
1292 }
7f6b466b
DSH		 1293 } else {
1294 idx = s->cert->key - s->cert->pkeys;
1295 }
1296 }
0972bc5c
DSH		 1297 if (idx < 0 || idx >= (int)OSSL_NELEM(tls_default_sigalg))
1298 return NULL;
1299 if (SSL_USE_SIGALGS(s) || idx != SSL_PKEY_RSA) {
263ff2c9 1300 const SIGALG_LOOKUP *lu = tls1_lookup_sigalg(s, tls_default_sigalg[idx]);
0972bc5c 1301
c8f6c28a 1302 if (!tls1_lookup_md(s->ctx, lu, NULL))
0972bc5c 1303 return NULL;
b0031e5d
KR		 1304 if (!tls12_sigalg_allowed(s, SSL_SECOP_SIGALG_SUPPORTED, lu))
1305 return NULL;
0972bc5c
DSH		 1306 return lu;
1307 }
b0031e5d
KR		 1308 if (!tls12_sigalg_allowed(s, SSL_SECOP_SIGALG_SUPPORTED, &legacy_rsa_sigalg))
1309 return NULL;
0972bc5c
DSH		 1310 return &legacy_rsa_sigalg;
1311}
1312/* Set peer sigalg based key type */
1313int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey)
1314{
52fd27f9
DSH		 1315 size_t idx;
1316 const SIGALG_LOOKUP *lu;
0972bc5c 1317
52fd27f9
DSH		 1318 if (ssl_cert_lookup_by_pkey(pkey, &idx) == NULL)
1319 return 0;
1320 lu = tls1_get_legacy_sigalg(s, idx);
0972bc5c
DSH		 1321 if (lu == NULL)
1322 return 0;
555cbb32 1323 s->s3.tmp.peer_sigalg = lu;
0972bc5c
DSH		 1324 return 1;
1325}
703bcee0 1326
98c792d1 1327size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs)
0f113f3e
MC		 1328{
1329 /*
1330 * If Suite B mode use Suite B sigalgs only, ignore any other
1331 * preferences.
1332 */
e481f9b9 1333#ifndef OPENSSL_NO_EC
0f113f3e
MC		 1334 switch (tls1_suiteb(s)) {
1335 case SSL_CERT_FLAG_SUITEB_128_LOS:
1336 *psigs = suiteb_sigalgs;
7a531ee4 1337 return OSSL_NELEM(suiteb_sigalgs);
0f113f3e
MC		 1338
1339 case SSL_CERT_FLAG_SUITEB_128_LOS_ONLY:
1340 *psigs = suiteb_sigalgs;
7a531ee4 1341 return 1;
0f113f3e
MC		 1342
1343 case SSL_CERT_FLAG_SUITEB_192_LOS:
7a531ee4
MC		 1344 *psigs = suiteb_sigalgs + 1;
1345 return 1;
0f113f3e 1346 }
e481f9b9 1347#endif
a9669ddc
DSH		 1348 /*
1349 * We use client_sigalgs (if not NULL) if we're a server
1350 * and sending a certificate request or if we're a client and
1351 * determining which shared algorithm to use.
1352 */
1353 if ((s->server == sent) && s->cert->client_sigalgs != NULL) {
0f113f3e
MC		 1354 *psigs = s->cert->client_sigalgs;
1355 return s->cert->client_sigalgslen;
1356 } else if (s->cert->conf_sigalgs) {
1357 *psigs = s->cert->conf_sigalgs;
1358 return s->cert->conf_sigalgslen;
1359 } else {
1360 *psigs = tls12_sigalgs;
703bcee0 1361 return OSSL_NELEM(tls12_sigalgs);
0f113f3e
MC		 1362 }
1363}
1364
65d2c16c 1365#ifndef OPENSSL_NO_EC
de4dc598
MC		 1366/*
1367 * Called by servers only. Checks that we have a sig alg that supports the
1368 * specified EC curve.
1369 */
1370int tls_check_sigalg_curve(const SSL *s, int curve)
1371{
1372 const uint16_t *sigs;
1373 size_t siglen, i;
1374
1375 if (s->cert->conf_sigalgs) {
1376 sigs = s->cert->conf_sigalgs;
1377 siglen = s->cert->conf_sigalgslen;
1378 } else {
1379 sigs = tls12_sigalgs;
1380 siglen = OSSL_NELEM(tls12_sigalgs);
1381 }
1382
1383 for (i = 0; i < siglen; i++) {
263ff2c9 1384 const SIGALG_LOOKUP *lu = tls1_lookup_sigalg(s, sigs[i]);
de4dc598
MC		 1385
1386 if (lu == NULL)
1387 continue;
1388 if (lu->sig == EVP_PKEY_EC
1389 && lu->curve != NID_undef
1390 && curve == lu->curve)
1391 return 1;
1392 }
1393
1394 return 0;
1395}
65d2c16c 1396#endif
de4dc598 1397
620c97b6
KR		 1398/*
1399 * Return the number of security bits for the signature algorithm, or 0 on
1400 * error.
1401 */
1402static int sigalg_security_bits(SSL_CTX *ctx, const SIGALG_LOOKUP *lu)
1403{
1404 const EVP_MD *md = NULL;
1405 int secbits = 0;
1406
1407 if (!tls1_lookup_md(ctx, lu, &md))
1408 return 0;
1409 if (md != NULL)
1410 {
aba03ae5
KR		 1411 int md_type = EVP_MD_type(md);
1412
620c97b6
KR		 1413 /* Security bits: half digest bits */
1414 secbits = EVP_MD_size(md) * 4;
aba03ae5
KR		 1415 /*
1416 * SHA1 and MD5 are known to be broken. Reduce security bits so that
1417 * they're no longer accepted at security level 1. The real values don't
1418 * really matter as long as they're lower than 80, which is our
1419 * security level 1.
1420 * https://eprint.iacr.org/2020/014 puts a chosen-prefix attack for
1421 * SHA1 at 2^63.4 and MD5+SHA1 at 2^67.2
1422 * https://documents.epfl.ch/users/l/le/lenstra/public/papers/lat.pdf
1423 * puts a chosen-prefix attack for MD5 at 2^39.
1424 */
1425 if (md_type == NID_sha1)
1426 secbits = 64;
1427 else if (md_type == NID_md5_sha1)
1428 secbits = 67;
1429 else if (md_type == NID_md5)
1430 secbits = 39;
620c97b6
KR		 1431 } else {
1432 /* Values from https://tools.ietf.org/html/rfc8032#section-8.5 */
1433 if (lu->sigalg == TLSEXT_SIGALG_ed25519)
1434 secbits = 128;
1435 else if (lu->sigalg == TLSEXT_SIGALG_ed448)
1436 secbits = 224;
1437 }
1438 return secbits;
1439}
1440
0f113f3e
MC		 1441/*
1442 * Check signature algorithm is consistent with sent supported signature
b2eb6998
DSH		 1443 * algorithms and if so set relevant digest and signature scheme in
1444 * s.
ec4a50b3 1445 */
f742cda8 1446int tls12_check_peer_sigalg(SSL *s, uint16_t sig, EVP_PKEY *pkey)
0f113f3e 1447{
98c792d1 1448 const uint16_t *sent_sigs;
5554facb 1449 const EVP_MD *md = NULL;
703bcee0 1450 char sigalgstr[2];
11d2641f 1451 size_t sent_sigslen, i, cidx;
c2041da8 1452 int pkeyid = -1;
f742cda8 1453 const SIGALG_LOOKUP *lu;
620c97b6 1454 int secbits = 0;
4d43ee28 1455
c2041da8 1456 pkeyid = EVP_PKEY_id(pkey);
0f113f3e 1457 /* Should never happen */
536199ec 1458 if (pkeyid == -1)
0f113f3e 1459 return -1;
5a8916d9
DSH		 1460 if (SSL_IS_TLS13(s)) {
1461 /* Disallow DSA for TLS 1.3 */
1462 if (pkeyid == EVP_PKEY_DSA) {
c48ffbcc 1463 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_WRONG_SIGNATURE_TYPE);
5a8916d9
DSH		 1464 return 0;
1465 }
1466 /* Only allow PSS for TLS 1.3 */
1467 if (pkeyid == EVP_PKEY_RSA)
1468 pkeyid = EVP_PKEY_RSA_PSS;
1469 }
263ff2c9 1470 lu = tls1_lookup_sigalg(s, sig);
f742cda8 1471 /*
d8311fc9
MC		 1472 * Check sigalgs is known. Disallow SHA1/SHA224 with TLS 1.3. Check key type
1473 * is consistent with signature: RSA keys can be used for RSA-PSS
f742cda8 1474 */
d8311fc9
MC		 1475 if (lu == NULL
1476 || (SSL_IS_TLS13(s) && (lu->hash == NID_sha1 || lu->hash == NID_sha224))
095a982b 1477 || (pkeyid != lu->sig
f742cda8 1478 && (lu->sig != EVP_PKEY_RSA_PSS || pkeyid != EVP_PKEY_RSA))) {
c48ffbcc 1479 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_WRONG_SIGNATURE_TYPE);
0f113f3e
MC		 1480 return 0;
1481 }
11d2641f
MC		 1482 /* Check the sigalg is consistent with the key OID */
1483 if (!ssl_cert_lookup_by_nid(EVP_PKEY_id(pkey), &cidx)
1484 || lu->sig_idx != (int)cidx) {
c48ffbcc 1485 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_WRONG_SIGNATURE_TYPE);
11d2641f
MC		 1486 return 0;
1487 }
1488
e481f9b9 1489#ifndef OPENSSL_NO_EC
fe3066ee 1490 if (pkeyid == EVP_PKEY_EC) {
44b6318f 1491
4a1b4280
DSH		 1492 /* Check point compression is permitted */
1493 if (!tls1_check_pkey_comp(s, pkey)) {
f63a17d6 1494 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER,
f63a17d6 1495 SSL_R_ILLEGAL_POINT_COMPRESSION);
4a1b4280
DSH		 1496 return 0;
1497 }
1498
1499 /* For TLS 1.3 or Suite B check curve matches signature algorithm */
1500 if (SSL_IS_TLS13(s) || tls1_suiteb(s)) {
c2041da8 1501 int curve = evp_pkey_get_EC_KEY_curve_nid(pkey);
4a1b4280 1502
a34a9df0 1503 if (lu->curve != NID_undef && curve != lu->curve) {
c48ffbcc 1504 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_WRONG_CURVE);
8f88cb53
DSH		 1505 return 0;
1506 }
4a1b4280
DSH		 1507 }
1508 if (!SSL_IS_TLS13(s)) {
1509 /* Check curve matches extensions */
dcf8b01f 1510 if (!tls1_check_group_id(s, tls1_get_group_id(pkey), 1)) {
c48ffbcc 1511 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_WRONG_CURVE);
8f88cb53
DSH		 1512 return 0;
1513 }
8f88cb53 1514 if (tls1_suiteb(s)) {
f1adb006
DSH		 1515 /* Check sigalg matches a permissible Suite B value */
1516 if (sig != TLSEXT_SIGALG_ecdsa_secp256r1_sha256
1517 && sig != TLSEXT_SIGALG_ecdsa_secp384r1_sha384) {
f63a17d6 1518 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE,
f63a17d6 1519 SSL_R_WRONG_SIGNATURE_TYPE);
0f113f3e 1520 return 0;
f1adb006 1521 }
8f88cb53 1522 }
0f113f3e 1523 }
8f88cb53 1524 } else if (tls1_suiteb(s)) {
c48ffbcc 1525 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_WRONG_SIGNATURE_TYPE);
0f113f3e 1526 return 0;
8f88cb53 1527 }
e481f9b9 1528#endif
0f113f3e
MC		 1529
1530 /* Check signature matches a type we sent */
a9669ddc 1531 sent_sigslen = tls12_get_psigalgs(s, 1, &sent_sigs);
536199ec 1532 for (i = 0; i < sent_sigslen; i++, sent_sigs++) {
703bcee0 1533 if (sig == *sent_sigs)
0f113f3e
MC		 1534 break;
1535 }
1536 /* Allow fallback to SHA1 if not strict mode */
f742cda8
DSH		 1537 if (i == sent_sigslen && (lu->hash != NID_sha1
1538 || s->cert->cert_flags & SSL_CERT_FLAGS_CHECK_TLS_STRICT)) {
c48ffbcc 1539 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_WRONG_SIGNATURE_TYPE);
0f113f3e
MC		 1540 return 0;
1541 }
c8f6c28a 1542 if (!tls1_lookup_md(s->ctx, lu, &md)) {
c48ffbcc 1543 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_UNKNOWN_DIGEST);
f63a17d6 1544 return 0;
0f113f3e 1545 }
620c97b6
KR		 1546 /*
1547 * Make sure security callback allows algorithm. For historical
1548 * reasons we have to pass the sigalg as a two byte char array.
1549 */
1550 sigalgstr[0] = (sig >> 8) & 0xff;
1551 sigalgstr[1] = sig & 0xff;
1552 secbits = sigalg_security_bits(s->ctx, lu);
1553 if (secbits == 0 ||
1554 !ssl_security(s, SSL_SECOP_SIGALG_CHECK, secbits,
1555 md != NULL ? EVP_MD_type(md) : NID_undef,
1556 (void *)sigalgstr)) {
c48ffbcc 1557 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_WRONG_SIGNATURE_TYPE);
620c97b6 1558 return 0;
0f113f3e 1559 }
6cbebb55 1560 /* Store the sigalg the peer uses */
555cbb32 1561 s->s3.tmp.peer_sigalg = lu;
0f113f3e
MC		 1562 return 1;
1563}
2ea80354 1564
42ef7aea
DSH		 1565int SSL_get_peer_signature_type_nid(const SSL *s, int *pnid)
1566{
555cbb32 1567 if (s->s3.tmp.peer_sigalg == NULL)
42ef7aea 1568 return 0;
555cbb32 1569 *pnid = s->s3.tmp.peer_sigalg->sig;
42ef7aea
DSH		 1570 return 1;
1571}
1572
a51c9f63
VD		 1573int SSL_get_signature_type_nid(const SSL *s, int *pnid)
1574{
555cbb32 1575 if (s->s3.tmp.sigalg == NULL)
a51c9f63 1576 return 0;
555cbb32 1577 *pnid = s->s3.tmp.sigalg->sig;
a51c9f63
VD		 1578 return 1;
1579}
1580
0f113f3e 1581/*
3eb2aff4
KR		 1582 * Set a mask of disabled algorithms: an algorithm is disabled if it isn't
1583 * supported, doesn't appear in supported signature algorithms, isn't supported
1584 * by the enabled protocol versions or by the security level.
1585 *
1586 * This function should only be used for checking which ciphers are supported
1587 * by the client.
1588 *
1589 * Call ssl_cipher_disabled() to check that it's enabled or not.
b7bfe69b 1590 */
1d0c08b4 1591int ssl_set_client_disabled(SSL *s)
0f113f3e 1592{
555cbb32
TS		 1593 s->s3.tmp.mask_a = 0;
1594 s->s3.tmp.mask_k = 0;
1595 ssl_set_sig_mask(&s->s3.tmp.mask_a, s, SSL_SECOP_SIGALG_MASK);
1596 if (ssl_get_min_max_version(s, &s->s3.tmp.min_ver,
1597 &s->s3.tmp.max_ver, NULL) != 0)
1d0c08b4 1598 return 0;
a230b26e 1599#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 1600 /* with PSK there must be client callback set */
1601 if (!s->psk_client_callback) {
555cbb32
TS		 1602 s->s3.tmp.mask_a |= SSL_aPSK;
1603 s->s3.tmp.mask_k |= SSL_PSK;
0f113f3e 1604 }
a230b26e 1605#endif /* OPENSSL_NO_PSK */
e481f9b9 1606#ifndef OPENSSL_NO_SRP
0f113f3e 1607 if (!(s->srp_ctx.srp_Mask & SSL_kSRP)) {
555cbb32
TS		 1608 s->s3.tmp.mask_a |= SSL_aSRP;
1609 s->s3.tmp.mask_k |= SSL_kSRP;
0f113f3e 1610 }
e481f9b9 1611#endif
1d0c08b4 1612 return 1;
0f113f3e 1613}
fc101f88 1614
3eb2aff4
KR		 1615/*
1616 * ssl_cipher_disabled - check that a cipher is disabled or not
1617 * @s: SSL connection that you want to use the cipher on
1618 * @c: cipher to check
1619 * @op: Security check that you want to do
8af91fd9 1620 * @ecdhe: If set to 1 then TLSv1 ECDHE ciphers are also allowed in SSLv3
3eb2aff4
KR		 1621 *
1622 * Returns 1 when it's disabled, 0 when enabled.
1623 */
b0031e5d 1624int ssl_cipher_disabled(const SSL *s, const SSL_CIPHER *c, int op, int ecdhe)
0f113f3e 1625{
555cbb32
TS		 1626 if (c->algorithm_mkey & s->s3.tmp.mask_k
1627 || c->algorithm_auth & s->s3.tmp.mask_a)
0f113f3e 1628 return 1;
555cbb32 1629 if (s->s3.tmp.max_ver == 0)
3eb2aff4 1630 return 1;
8af91fd9
MC		 1631 if (!SSL_IS_DTLS(s)) {
1632 int min_tls = c->min_tls;
1633
1634 /*
1635 * For historical reasons we will allow ECHDE to be selected by a server
1636 * in SSLv3 if we are a client
1637 */
1638 if (min_tls == TLS1_VERSION && ecdhe
1639 && (c->algorithm_mkey & (SSL_kECDHE | SSL_kECDHEPSK)) != 0)
1640 min_tls = SSL3_VERSION;
1641
555cbb32 1642 if ((min_tls > s->s3.tmp.max_ver) || (c->max_tls < s->s3.tmp.min_ver))
8af91fd9
MC		 1643 return 1;
1644 }
555cbb32
TS		 1645 if (SSL_IS_DTLS(s) && (DTLS_VERSION_GT(c->min_dtls, s->s3.tmp.max_ver)
1646 || DTLS_VERSION_LT(c->max_dtls, s->s3.tmp.min_ver)))
3eb2aff4
KR		 1647 return 1;
1648
0f113f3e
MC		 1649 return !ssl_security(s, op, c->strength_bits, 0, (void *)c);
1650}
b362ccab 1651
7da160b0 1652int tls_use_ticket(SSL *s)
0f113f3e 1653{
08191294 1654 if ((s->options & SSL_OP_NO_TICKET))
0f113f3e
MC		 1655 return 0;
1656 return ssl_security(s, SSL_SECOP_TICKET, 0, 0, NULL);
1657}
ed3883d2 1658
e469af8d 1659int tls1_set_server_sigalgs(SSL *s)
0f113f3e 1660{
0f113f3e 1661 size_t i;
8483a003
F		 1662
1663 /* Clear any shared signature algorithms */
29948ac8
BK		 1664 OPENSSL_free(s->shared_sigalgs);
1665 s->shared_sigalgs = NULL;
1666 s->shared_sigalgslen = 0;
9195ddcd
DSH		 1667 /* Clear certificate validity flags */
1668 for (i = 0; i < SSL_PKEY_NUM; i++)
555cbb32 1669 s->s3.tmp.valid_flags[i] = 0;
a8bb912d
DSH		 1670 /*
1671 * If peer sent no signature algorithms check to see if we support
1672 * the default algorithm for each certificate type
1673 */
555cbb32
TS		 1674 if (s->s3.tmp.peer_cert_sigalgs == NULL
1675 && s->s3.tmp.peer_sigalgs == NULL) {
a8bb912d
DSH		 1676 const uint16_t *sent_sigs;
1677 size_t sent_sigslen = tls12_get_psigalgs(s, 1, &sent_sigs);
0f113f3e 1678
a8bb912d
DSH		 1679 for (i = 0; i < SSL_PKEY_NUM; i++) {
1680 const SIGALG_LOOKUP *lu = tls1_get_legacy_sigalg(s, i);
1681 size_t j;
1682
1683 if (lu == NULL)
1684 continue;
1685 /* Check default matches a type we sent */
1686 for (j = 0; j < sent_sigslen; j++) {
1687 if (lu->sigalg == sent_sigs[j]) {
555cbb32 1688 s->s3.tmp.valid_flags[i] = CERT_PKEY_SIGN;
a8bb912d
DSH		 1689 break;
1690 }
1691 }
1692 }
9195ddcd 1693 return 1;
a8bb912d 1694 }
9195ddcd
DSH		 1695
1696 if (!tls1_process_sigalgs(s)) {
c48ffbcc 1697 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
f63a17d6 1698 return 0;
d376e57d 1699 }
29948ac8 1700 if (s->shared_sigalgs != NULL)
9195ddcd 1701 return 1;
f63a17d6 1702
fb34a0f4 1703 /* Fatal error if no shared signature algorithms */
c48ffbcc 1704 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE,
f63a17d6 1705 SSL_R_NO_SHARED_SIGNATURE_ALGORITHMS);
0f113f3e
MC		 1706 return 0;
1707}
e469af8d 1708
1d97c843 1709/*-
1ab3836b 1710 * Gets the ticket information supplied by the client if any.
e7f0d921 1711 *
1ab3836b 1712 * hello: The parsed ClientHello data
c519e89f
BM		 1713 * ret: (output) on return, if a ticket was decrypted, then this is set to
1714 * point to the resulting session.
6434abbf 1715 */
61fb5923 1716SSL_TICKET_STATUS tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello,
df0fed9a 1717 SSL_SESSION **ret)
0f113f3e 1718{
1ab3836b
MC		 1719 size_t size;
1720 RAW_EXTENSION *ticketext;
e7f0d921 1721
0f113f3e 1722 *ret = NULL;
aff8c126 1723 s->ext.ticket_expected = 0;
0f113f3e
MC		 1724
1725 /*
9362c93e
MC		 1726 * If tickets disabled or not supported by the protocol version
1727 * (e.g. TLSv1.3) behave as if no ticket present to permit stateful
0f113f3e
MC		 1728 * resumption.
1729 */
1ab3836b 1730 if (s->version <= SSL3_VERSION || !tls_use_ticket(s))
df0fed9a 1731 return SSL_TICKET_NONE;
9ceb2426 1732
70af3d8e
MC		 1733 ticketext = &hello->pre_proc_exts[TLSEXT_IDX_session_ticket];
1734 if (!ticketext->present)
df0fed9a 1735 return SSL_TICKET_NONE;
1ab3836b
MC		 1736
1737 size = PACKET_remaining(&ticketext->data);
70af3d8e 1738
c0638ade 1739 return tls_decrypt_ticket(s, PACKET_data(&ticketext->data), size,
70af3d8e 1740 hello->session_id, hello->session_id_len, ret);
1ab3836b
MC		 1741}
1742
1d97c843
TH		 1743/*-
1744 * tls_decrypt_ticket attempts to decrypt a session ticket.
c519e89f 1745 *
61fb5923
MC		 1746 * If s->tls_session_secret_cb is set and we're not doing TLSv1.3 then we are
1747 * expecting a pre-shared key ciphersuite, in which case we have no use for
1748 * session tickets and one will never be decrypted, nor will
1749 * s->ext.ticket_expected be set to 1.
1750 *
1751 * Side effects:
1752 * Sets s->ext.ticket_expected to 1 if the server will have to issue
1753 * a new session ticket to the client because the client indicated support
1754 * (and s->tls_session_secret_cb is NULL) but the client either doesn't have
1755 * a session ticket or we couldn't use the one it gave us, or if
1756 * s->ctx->ext.ticket_key_cb asked to renew the client's ticket.
1757 * Otherwise, s->ext.ticket_expected is set to 0.
1758 *
c519e89f 1759 * etick: points to the body of the session ticket extension.
8483a003 1760 * eticklen: the length of the session tickets extension.
c519e89f
BM		 1761 * sess_id: points at the session ID.
1762 * sesslen: the length of the session ID.
1763 * psess: (output) on return, if a ticket was decrypted, then this is set to
1764 * point to the resulting session.
c519e89f 1765 */
61fb5923 1766SSL_TICKET_STATUS tls_decrypt_ticket(SSL *s, const unsigned char *etick,
df0fed9a
TS		 1767 size_t eticklen, const unsigned char *sess_id,
1768 size_t sesslen, SSL_SESSION **psess)
0f113f3e 1769{
61fb5923 1770 SSL_SESSION *sess = NULL;
0f113f3e
MC		 1771 unsigned char *sdec;
1772 const unsigned char *p;
ddf6ec00 1773 int slen, renew_ticket = 0, declen;
61fb5923 1774 SSL_TICKET_STATUS ret = SSL_TICKET_FATAL_ERR_OTHER;
348240c6 1775 size_t mlen;
0f113f3e 1776 unsigned char tick_hmac[EVP_MAX_MD_SIZE];
a76ce286 1777 SSL_HMAC *hctx = NULL;
ee763495 1778 EVP_CIPHER_CTX *ctx = NULL;
222da979 1779 SSL_CTX *tctx = s->session_ctx;
e97763c9 1780
61fb5923
MC		 1781 if (eticklen == 0) {
1782 /*
1783 * The client will accept a ticket but doesn't currently have
1784 * one (TLSv1.2 and below), or treated as a fatal error in TLSv1.3
1785 */
1786 ret = SSL_TICKET_EMPTY;
1787 goto end;
1788 }
1789 if (!SSL_IS_TLS13(s) && s->ext.session_secret_cb) {
1790 /*
1791 * Indicate that the ticket couldn't be decrypted rather than
1792 * generating the session from ticket now, trigger
1793 * abbreviated handshake based on external mechanism to
1794 * calculate the master secret later.
1795 */
1796 ret = SSL_TICKET_NO_DECRYPT;
1797 goto end;
1798 }
1799
ee763495
MC		 1800 /* Need at least keyname + iv */
1801 if (eticklen < TLSEXT_KEYNAME_LENGTH + EVP_MAX_IV_LENGTH) {
df0fed9a 1802 ret = SSL_TICKET_NO_DECRYPT;
c0638ade 1803 goto end;
ee763495
MC		 1804 }
1805
0f113f3e 1806 /* Initialize session ticket encryption and HMAC contexts */
a76ce286 1807 hctx = ssl_hmac_new(tctx);
c0638ade
MC		 1808 if (hctx == NULL) {
1809 ret = SSL_TICKET_FATAL_ERR_MALLOC;
1810 goto end;
1811 }
846ec07d 1812 ctx = EVP_CIPHER_CTX_new();
35b1a433 1813 if (ctx == NULL) {
df0fed9a 1814 ret = SSL_TICKET_FATAL_ERR_MALLOC;
c0638ade 1815 goto end;
35b1a433 1816 }
a76ce286
P		 1817#ifndef OPENSSL_NO_DEPRECATED_3_0
1818 if (tctx->ext.ticket_key_evp_cb != NULL || tctx->ext.ticket_key_cb != NULL)
1819#else
1820 if (tctx->ext.ticket_key_evp_cb != NULL)
1821#endif
1822 {
0f113f3e 1823 unsigned char *nctick = (unsigned char *)etick;
a76ce286
P		 1824 int rv = 0;
1825
1826 if (tctx->ext.ticket_key_evp_cb != NULL)
1827 rv = tctx->ext.ticket_key_evp_cb(s, nctick,
1828 nctick + TLSEXT_KEYNAME_LENGTH,
1829 ctx,
1830 ssl_hmac_get0_EVP_MAC_CTX(hctx),
1831 0);
1832#ifndef OPENSSL_NO_DEPRECATED_3_0
1833 else if (tctx->ext.ticket_key_cb != NULL)
1834 /* if 0 is returned, write an empty ticket */
1835 rv = tctx->ext.ticket_key_cb(s, nctick,
ee763495 1836 nctick + TLSEXT_KEYNAME_LENGTH,
a76ce286
P		 1837 ctx, ssl_hmac_get0_HMAC_CTX(hctx), 0);
1838#endif
c0638ade
MC		 1839 if (rv < 0) {
1840 ret = SSL_TICKET_FATAL_ERR_OTHER;
1841 goto end;
1842 }
35b1a433 1843 if (rv == 0) {
df0fed9a 1844 ret = SSL_TICKET_NO_DECRYPT;
c0638ade 1845 goto end;
35b1a433 1846 }
0f113f3e
MC		 1847 if (rv == 2)
1848 renew_ticket = 1;
1849 } else {
148bfd26
MC		 1850 EVP_CIPHER *aes256cbc = NULL;
1851
0f113f3e 1852 /* Check key name matches */
aff8c126 1853 if (memcmp(etick, tctx->ext.tick_key_name,
ee763495 1854 TLSEXT_KEYNAME_LENGTH) != 0) {
df0fed9a 1855 ret = SSL_TICKET_NO_DECRYPT;
c0638ade 1856 goto end;
35b1a433 1857 }
148bfd26
MC		 1858
1859 aes256cbc = EVP_CIPHER_fetch(s->ctx->libctx, "AES-256-CBC",
1860 s->ctx->propq);
1861 if (aes256cbc == NULL
1862 || ssl_hmac_init(hctx, tctx->ext.secure->tick_hmac_key,
1863 sizeof(tctx->ext.secure->tick_hmac_key),
1864 "SHA256") <= 0
1865 || EVP_DecryptInit_ex(ctx, aes256cbc, NULL,
4bfb96f2 1866 tctx->ext.secure->tick_aes_key,
ee763495 1867 etick + TLSEXT_KEYNAME_LENGTH) <= 0) {
148bfd26 1868 EVP_CIPHER_free(aes256cbc);
c0638ade
MC		 1869 ret = SSL_TICKET_FATAL_ERR_OTHER;
1870 goto end;
a230b26e 1871 }
148bfd26 1872 EVP_CIPHER_free(aes256cbc);
c0638ade
MC		 1873 if (SSL_IS_TLS13(s))
1874 renew_ticket = 1;
0f113f3e
MC		 1875 }
1876 /*
1877 * Attempt to process session ticket, first conduct sanity and integrity
1878 * checks on ticket.
1879 */
a76ce286 1880 mlen = ssl_hmac_size(hctx);
348240c6 1881 if (mlen == 0) {
c0638ade
MC		 1882 ret = SSL_TICKET_FATAL_ERR_OTHER;
1883 goto end;
0f113f3e 1884 }
c0638ade 1885
e97763c9
DSH		 1886 /* Sanity check ticket length: must exceed keyname + IV + HMAC */
1887 if (eticklen <=
348240c6 1888 TLSEXT_KEYNAME_LENGTH + EVP_CIPHER_CTX_iv_length(ctx) + mlen) {
df0fed9a 1889 ret = SSL_TICKET_NO_DECRYPT;
c0638ade 1890 goto end;
e97763c9 1891 }
0f113f3e
MC		 1892 eticklen -= mlen;
1893 /* Check HMAC of encrypted ticket */
a76ce286
P		 1894 if (ssl_hmac_update(hctx, etick, eticklen) <= 0
1895 || ssl_hmac_final(hctx, tick_hmac, NULL, sizeof(tick_hmac)) <= 0) {
c0638ade
MC		 1896 ret = SSL_TICKET_FATAL_ERR_OTHER;
1897 goto end;
5f3d93e4 1898 }
c0638ade 1899
0f113f3e 1900 if (CRYPTO_memcmp(tick_hmac, etick + eticklen, mlen)) {
c0638ade
MC		 1901 ret = SSL_TICKET_NO_DECRYPT;
1902 goto end;
0f113f3e
MC		 1903 }
1904 /* Attempt to decrypt session data */
1905 /* Move p after IV to start of encrypted ticket, update length */
57b0d651
BE		 1906 p = etick + TLSEXT_KEYNAME_LENGTH + EVP_CIPHER_CTX_iv_length(ctx);
1907 eticklen -= TLSEXT_KEYNAME_LENGTH + EVP_CIPHER_CTX_iv_length(ctx);
0f113f3e 1908 sdec = OPENSSL_malloc(eticklen);
348240c6
MC		 1909 if (sdec == NULL || EVP_DecryptUpdate(ctx, sdec, &slen, p,
1910 (int)eticklen) <= 0) {
d1247df2 1911 OPENSSL_free(sdec);
c0638ade
MC		 1912 ret = SSL_TICKET_FATAL_ERR_OTHER;
1913 goto end;
0f113f3e 1914 }
348240c6 1915 if (EVP_DecryptFinal(ctx, sdec + slen, &declen) <= 0) {
0f113f3e 1916 OPENSSL_free(sdec);
c0638ade
MC		 1917 ret = SSL_TICKET_NO_DECRYPT;
1918 goto end;
0f113f3e 1919 }
348240c6 1920 slen += declen;
0f113f3e
MC		 1921 p = sdec;
1922
1923 sess = d2i_SSL_SESSION(NULL, &p, slen);
d3bc9805 1924 slen -= p - sdec;
0f113f3e
MC		 1925 OPENSSL_free(sdec);
1926 if (sess) {
79020b27 1927 /* Some additional consistency checks */
32305f88 1928 if (slen != 0) {
79020b27 1929 SSL_SESSION_free(sess);
5f96a95e 1930 sess = NULL;
c0638ade
MC		 1931 ret = SSL_TICKET_NO_DECRYPT;
1932 goto end;
79020b27 1933 }
0f113f3e
MC		 1934 /*
1935 * The session ID, if non-empty, is used by some clients to detect
1936 * that the ticket has been accepted. So we copy it to the session
1937 * structure. If it is empty set length to zero as required by
1938 * standard.
1939 */
32305f88 1940 if (sesslen) {
0f113f3e 1941 memcpy(sess->session_id, sess_id, sesslen);
32305f88
MC		 1942 sess->session_id_length = sesslen;
1943 }
0f113f3e 1944 if (renew_ticket)
c0638ade 1945 ret = SSL_TICKET_SUCCESS_RENEW;
0f113f3e 1946 else
c0638ade
MC		 1947 ret = SSL_TICKET_SUCCESS;
1948 goto end;
0f113f3e
MC		 1949 }
1950 ERR_clear_error();
1951 /*
1952 * For session parse failure, indicate that we need to send a new ticket.
1953 */
c0638ade
MC		 1954 ret = SSL_TICKET_NO_DECRYPT;
1955
1956 end:
846ec07d 1957 EVP_CIPHER_CTX_free(ctx);
a76ce286 1958 ssl_hmac_free(hctx);
c0638ade
MC		 1959
1960 /*
61fb5923
MC		 1961 * If set, the decrypt_ticket_cb() is called unless a fatal error was
1962 * detected above. The callback is responsible for checking |ret| before it
1963 * performs any action
c0638ade 1964 */
61fb5923
MC		 1965 if (s->session_ctx->decrypt_ticket_cb != NULL
1966 && (ret == SSL_TICKET_EMPTY
1967 || ret == SSL_TICKET_NO_DECRYPT
1968 || ret == SSL_TICKET_SUCCESS
1969 || ret == SSL_TICKET_SUCCESS_RENEW)) {
c0638ade 1970 size_t keyname_len = eticklen;
61fb5923 1971 int retcb;
c0638ade
MC		 1972
1973 if (keyname_len > TLSEXT_KEYNAME_LENGTH)
1974 keyname_len = TLSEXT_KEYNAME_LENGTH;
61fb5923
MC		 1975 retcb = s->session_ctx->decrypt_ticket_cb(s, sess, etick, keyname_len,
1976 ret,
1977 s->session_ctx->ticket_cb_data);
1978 switch (retcb) {
1979 case SSL_TICKET_RETURN_ABORT:
1980 ret = SSL_TICKET_FATAL_ERR_OTHER;
1981 break;
1982
1983 case SSL_TICKET_RETURN_IGNORE:
1984 ret = SSL_TICKET_NONE;
1985 SSL_SESSION_free(sess);
1986 sess = NULL;
1987 break;
1988
1989 case SSL_TICKET_RETURN_IGNORE_RENEW:
1990 if (ret != SSL_TICKET_EMPTY && ret != SSL_TICKET_NO_DECRYPT)
1991 ret = SSL_TICKET_NO_DECRYPT;
1992 /* else the value of |ret| will already do the right thing */
1993 SSL_SESSION_free(sess);
1994 sess = NULL;
1995 break;
1996
1997 case SSL_TICKET_RETURN_USE:
1998 case SSL_TICKET_RETURN_USE_RENEW:
1999 if (ret != SSL_TICKET_SUCCESS
2000 && ret != SSL_TICKET_SUCCESS_RENEW)
2001 ret = SSL_TICKET_FATAL_ERR_OTHER;
2002 else if (retcb == SSL_TICKET_RETURN_USE)
2003 ret = SSL_TICKET_SUCCESS;
2004 else
2005 ret = SSL_TICKET_SUCCESS_RENEW;
2006 break;
2007
2008 default:
2009 ret = SSL_TICKET_FATAL_ERR_OTHER;
2010 }
c0638ade
MC		 2011 }
2012
309371d6
MC		 2013 if (s->ext.session_secret_cb == NULL || SSL_IS_TLS13(s)) {
2014 switch (ret) {
2015 case SSL_TICKET_NO_DECRYPT:
2016 case SSL_TICKET_SUCCESS_RENEW:
2017 case SSL_TICKET_EMPTY:
2018 s->ext.ticket_expected = 1;
2019 }
c0638ade
MC		 2020 }
2021
61fb5923
MC		 2022 *psess = sess;
2023
2024 return ret;
0f113f3e 2025}
6434abbf 2026
b362ccab 2027/* Check to see if a signature algorithm is allowed */
b0031e5d 2028static int tls12_sigalg_allowed(const SSL *s, int op, const SIGALG_LOOKUP *lu)
0f113f3e 2029{
703bcee0 2030 unsigned char sigalgstr[2];
44b6318f 2031 int secbits;
703bcee0 2032
263ff2c9 2033 if (lu == NULL || !lu->enabled)
0f113f3e 2034 return 0;
224b4e37
DSH		 2035 /* DSA is not allowed in TLS 1.3 */
2036 if (SSL_IS_TLS13(s) && lu->sig == EVP_PKEY_DSA)
2037 return 0;
6ffeb269 2038 /* TODO(OpenSSL1.2) fully axe DSA/etc. in ClientHello per TLS 1.3 spec */
555cbb32 2039 if (!s->server && !SSL_IS_DTLS(s) && s->s3.tmp.min_ver >= TLS1_3_VERSION
6ffeb269
BK		 2040 && (lu->sig == EVP_PKEY_DSA || lu->hash_idx == SSL_MD_SHA1_IDX
2041 || lu->hash_idx == SSL_MD_MD5_IDX
2042 || lu->hash_idx == SSL_MD_SHA224_IDX))
2043 return 0;
871980a9 2044
0f113f3e 2045 /* See if public key algorithm allowed */
a68eee67 2046 if (ssl_cert_is_disabled(s->ctx, lu->sig_idx))
0f113f3e 2047 return 0;
871980a9
MC		 2048
2049 if (lu->sig == NID_id_GostR3410_2012_256
2050 || lu->sig == NID_id_GostR3410_2012_512
2051 || lu->sig == NID_id_GostR3410_2001) {
2052 /* We never allow GOST sig algs on the server with TLSv1.3 */
2053 if (s->server && SSL_IS_TLS13(s))
2054 return 0;
2055 if (!s->server
2056 && s->method->version == TLS_ANY_VERSION
555cbb32 2057 && s->s3.tmp.max_ver >= TLS1_3_VERSION) {
871980a9
MC		 2058 int i, num;
2059 STACK_OF(SSL_CIPHER) *sk;
2060
2061 /*
2062 * We're a client that could negotiate TLSv1.3. We only allow GOST
2063 * sig algs if we could negotiate TLSv1.2 or below and we have GOST
2064 * ciphersuites enabled.
2065 */
2066
555cbb32 2067 if (s->s3.tmp.min_ver >= TLS1_3_VERSION)
871980a9
MC		 2068 return 0;
2069
2070 sk = SSL_get_ciphers(s);
2071 num = sk != NULL ? sk_SSL_CIPHER_num(sk) : 0;
2072 for (i = 0; i < num; i++) {
2073 const SSL_CIPHER *c;
2074
2075 c = sk_SSL_CIPHER_value(sk, i);
2076 /* Skip disabled ciphers */
2077 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0))
2078 continue;
2079
5a5530a2 2080 if ((c->algorithm_mkey & (SSL_kGOST | SSL_kGOST18)) != 0)
871980a9
MC		 2081 break;
2082 }
2083 if (i == num)
2084 return 0;
2085 }
2086 }
2087
0f113f3e 2088 /* Finally see if security callback allows it */
620c97b6 2089 secbits = sigalg_security_bits(s->ctx, lu);
b0e9ab95
DSH		 2090 sigalgstr[0] = (lu->sigalg >> 8) & 0xff;
2091 sigalgstr[1] = lu->sigalg & 0xff;
44b6318f 2092 return ssl_security(s, op, secbits, lu->hash, (void *)sigalgstr);
0f113f3e
MC		 2093}
2094
2095/*
2096 * Get a mask of disabled public key algorithms based on supported signature
2097 * algorithms. For example if no signature algorithm supports RSA then RSA is
2098 * disabled.
b362ccab
DSH		 2099 */
2100
90d9e49a 2101void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op)
0f113f3e 2102{
98c792d1 2103 const uint16_t *sigalgs;
0f113f3e 2104 size_t i, sigalgslen;
13cc2574 2105 uint32_t disabled_mask = SSL_aRSA | SSL_aDSS | SSL_aECDSA;
0f113f3e 2106 /*
13cc2574
DSH		 2107 * Go through all signature algorithms seeing if we support any
2108 * in disabled_mask.
0f113f3e 2109 */
a9669ddc 2110 sigalgslen = tls12_get_psigalgs(s, 1, &sigalgs);
b2555168 2111 for (i = 0; i < sigalgslen; i++, sigalgs++) {
263ff2c9 2112 const SIGALG_LOOKUP *lu = tls1_lookup_sigalg(s, *sigalgs);
13cc2574 2113 const SSL_CERT_LOOKUP *clu;
b0e9ab95
DSH		 2114
2115 if (lu == NULL)
2116 continue;
13cc2574
DSH		 2117
2118 clu = ssl_cert_lookup_by_idx(lu->sig_idx);
dd6b2706
P		 2119 if (clu == NULL)
2120 continue;
13cc2574
DSH		 2121
2122 /* If algorithm is disabled see if we can enable it */
2123 if ((clu->amask & disabled_mask) != 0
2124 && tls12_sigalg_allowed(s, op, lu))
2125 disabled_mask &= ~clu->amask;
0f113f3e 2126 }
13cc2574 2127 *pmask_a |= disabled_mask;
0f113f3e 2128}
b362ccab 2129
ae2f7b37 2130int tls12_copy_sigalgs(SSL *s, WPACKET *pkt,
98c792d1 2131 const uint16_t *psig, size_t psiglen)
2c7b4dbc
MC		 2132{
2133 size_t i;
b0e9ab95 2134 int rv = 0;
c0f9e23c 2135
703bcee0 2136 for (i = 0; i < psiglen; i++, psig++) {
263ff2c9 2137 const SIGALG_LOOKUP *lu = tls1_lookup_sigalg(s, *psig);
b0e9ab95
DSH		 2138
2139 if (!tls12_sigalg_allowed(s, SSL_SECOP_SIGALG_SUPPORTED, lu))
2140 continue;
2141 if (!WPACKET_put_bytes_u16(pkt, *psig))
2142 return 0;
2143 /*
2144 * If TLS 1.3 must have at least one valid TLS 1.3 message
d8311fc9 2145 * signing algorithm: i.e. neither RSA nor SHA1/SHA224
b0e9ab95
DSH		 2146 */
2147 if (rv == 0 && (!SSL_IS_TLS13(s)
d8311fc9
MC		 2148 || (lu->sig != EVP_PKEY_RSA
2149 && lu->hash != NID_sha1
2150 && lu->hash != NID_sha224)))
b0e9ab95 2151 rv = 1;
2c7b4dbc 2152 }
5528d68f 2153 if (rv == 0)
6849b73c 2154 ERR_raise(ERR_LIB_SSL, SSL_R_NO_SUITABLE_SIGNATURE_ALGORITHM);
b0e9ab95 2155 return rv;
2c7b4dbc
MC		 2156}
2157
4453cd8c 2158/* Given preference and allowed sigalgs set shared sigalgs */
4d43ee28 2159static size_t tls12_shared_sigalgs(SSL *s, const SIGALG_LOOKUP **shsig,
98c792d1
DSH		 2160 const uint16_t *pref, size_t preflen,
2161 const uint16_t *allow, size_t allowlen)
0f113f3e 2162{
98c792d1 2163 const uint16_t *ptmp, *atmp;
0f113f3e 2164 size_t i, j, nmatch = 0;
703bcee0 2165 for (i = 0, ptmp = pref; i < preflen; i++, ptmp++) {
263ff2c9 2166 const SIGALG_LOOKUP *lu = tls1_lookup_sigalg(s, *ptmp);
b0e9ab95 2167
0f113f3e 2168 /* Skip disabled hashes or signature algorithms */
b0e9ab95 2169 if (!tls12_sigalg_allowed(s, SSL_SECOP_SIGALG_SHARED, lu))
0f113f3e 2170 continue;
703bcee0
MC		 2171 for (j = 0, atmp = allow; j < allowlen; j++, atmp++) {
2172 if (*ptmp == *atmp) {
0f113f3e 2173 nmatch++;
b0e9ab95
DSH		 2174 if (shsig)
2175 *shsig++ = lu;
0f113f3e
MC		 2176 break;
2177 }
2178 }
2179 }
2180 return nmatch;
2181}
4453cd8c
DSH		 2182
2183/* Set shared signature algorithms for SSL structures */
2184static int tls1_set_shared_sigalgs(SSL *s)
0f113f3e 2185{
98c792d1 2186 const uint16_t *pref, *allow, *conf;
0f113f3e
MC		 2187 size_t preflen, allowlen, conflen;
2188 size_t nmatch;
4d43ee28 2189 const SIGALG_LOOKUP **salgs = NULL;
0f113f3e
MC		 2190 CERT *c = s->cert;
2191 unsigned int is_suiteb = tls1_suiteb(s);
b548a1f1 2192
29948ac8
BK		 2193 OPENSSL_free(s->shared_sigalgs);
2194 s->shared_sigalgs = NULL;
2195 s->shared_sigalgslen = 0;
0f113f3e
MC		 2196 /* If client use client signature algorithms if not NULL */
2197 if (!s->server && c->client_sigalgs && !is_suiteb) {
2198 conf = c->client_sigalgs;
2199 conflen = c->client_sigalgslen;
2200 } else if (c->conf_sigalgs && !is_suiteb) {
2201 conf = c->conf_sigalgs;
2202 conflen = c->conf_sigalgslen;
2203 } else
a9669ddc 2204 conflen = tls12_get_psigalgs(s, 0, &conf);
0f113f3e
MC		 2205 if (s->options & SSL_OP_CIPHER_SERVER_PREFERENCE || is_suiteb) {
2206 pref = conf;
2207 preflen = conflen;
555cbb32
TS		 2208 allow = s->s3.tmp.peer_sigalgs;
2209 allowlen = s->s3.tmp.peer_sigalgslen;
0f113f3e
MC		 2210 } else {
2211 allow = conf;
2212 allowlen = conflen;
555cbb32
TS		 2213 pref = s->s3.tmp.peer_sigalgs;
2214 preflen = s->s3.tmp.peer_sigalgslen;
0f113f3e
MC		 2215 }
2216 nmatch = tls12_shared_sigalgs(s, NULL, pref, preflen, allow, allowlen);
34e3edbf 2217 if (nmatch) {
cdb10bae 2218 if ((salgs = OPENSSL_malloc(nmatch * sizeof(*salgs))) == NULL) {
6849b73c 2219 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
34e3edbf 2220 return 0;
cdb10bae 2221 }
34e3edbf
DSH		 2222 nmatch = tls12_shared_sigalgs(s, salgs, pref, preflen, allow, allowlen);
2223 } else {
2224 salgs = NULL;
2225 }
29948ac8
BK		 2226 s->shared_sigalgs = salgs;
2227 s->shared_sigalgslen = nmatch;
0f113f3e
MC		 2228 return 1;
2229}
4453cd8c 2230
9e84a42d 2231int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen)
0f113f3e 2232{
98c792d1 2233 unsigned int stmp;
703bcee0 2234 size_t size, i;
9e84a42d 2235 uint16_t *buf;
0f113f3e 2236
703bcee0
MC		 2237 size = PACKET_remaining(pkt);
2238
2239 /* Invalid data length */
8f12296e 2240 if (size == 0 || (size & 1) != 0)
703bcee0
MC		 2241 return 0;
2242
2243 size >>= 1;
2244
cdb10bae 2245 if ((buf = OPENSSL_malloc(size * sizeof(*buf))) == NULL) {
6849b73c 2246 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 2247 return 0;
cdb10bae 2248 }
98c792d1 2249 for (i = 0; i < size && PACKET_get_net_2(pkt, &stmp); i++)
9e84a42d 2250 buf[i] = stmp;
703bcee0 2251
9e84a42d
DSH		 2252 if (i != size) {
2253 OPENSSL_free(buf);
703bcee0 2254 return 0;
9e84a42d
DSH		 2255 }
2256
2257 OPENSSL_free(*pdest);
2258 *pdest = buf;
2259 *pdestlen = size;
703bcee0 2260
0f113f3e
MC		 2261 return 1;
2262}
6b7be581 2263
c589c34e 2264int tls1_save_sigalgs(SSL *s, PACKET *pkt, int cert)
9e84a42d
DSH		 2265{
2266 /* Extension ignored for inappropriate versions */
2267 if (!SSL_USE_SIGALGS(s))
2268 return 1;
2269 /* Should never happen */
2270 if (s->cert == NULL)
2271 return 0;
2272
c589c34e 2273 if (cert)
555cbb32
TS		 2274 return tls1_save_u16(pkt, &s->s3.tmp.peer_cert_sigalgs,
2275 &s->s3.tmp.peer_cert_sigalgslen);
c589c34e 2276 else
555cbb32
TS		 2277 return tls1_save_u16(pkt, &s->s3.tmp.peer_sigalgs,
2278 &s->s3.tmp.peer_sigalgslen);
9e84a42d 2279
9e84a42d
DSH		 2280}
2281
2282/* Set preferred digest for each key type */
2283
c800c27a 2284int tls1_process_sigalgs(SSL *s)
0f113f3e 2285{
0f113f3e 2286 size_t i;
555cbb32 2287 uint32_t *pvalid = s->s3.tmp.valid_flags;
4d43ee28 2288
0f113f3e
MC		 2289 if (!tls1_set_shared_sigalgs(s))
2290 return 0;
2291
9195ddcd
DSH		 2292 for (i = 0; i < SSL_PKEY_NUM; i++)
2293 pvalid[i] = 0;
2294
29948ac8
BK		 2295 for (i = 0; i < s->shared_sigalgslen; i++) {
2296 const SIGALG_LOOKUP *sigptr = s->shared_sigalgs[i];
9195ddcd 2297 int idx = sigptr->sig_idx;
4d43ee28 2298
523fb323 2299 /* Ignore PKCS1 based sig algs in TLSv1.3 */
4d43ee28 2300 if (SSL_IS_TLS13(s) && sigptr->sig == EVP_PKEY_RSA)
523fb323 2301 continue;
9195ddcd 2302 /* If not disabled indicate we can explicitly sign */
a68eee67 2303 if (pvalid[idx] == 0 && !ssl_cert_is_disabled(s->ctx, idx))
b8858aec 2304 pvalid[idx] = CERT_PKEY_EXPLICIT_SIGN | CERT_PKEY_SIGN;
0f113f3e
MC		 2305 }
2306 return 1;
2307}
4817504d 2308
e7f8ff43 2309int SSL_get_sigalgs(SSL *s, int idx,
0f113f3e
MC		 2310 int *psign, int *phash, int *psignhash,
2311 unsigned char *rsig, unsigned char *rhash)
2312{
555cbb32
TS		 2313 uint16_t *psig = s->s3.tmp.peer_sigalgs;
2314 size_t numsigalgs = s->s3.tmp.peer_sigalgslen;
348240c6 2315 if (psig == NULL || numsigalgs > INT_MAX)
0f113f3e
MC		 2316 return 0;
2317 if (idx >= 0) {
4d43ee28
DSH		 2318 const SIGALG_LOOKUP *lu;
2319
703bcee0 2320 if (idx >= (int)numsigalgs)
0f113f3e
MC		 2321 return 0;
2322 psig += idx;
4d43ee28 2323 if (rhash != NULL)
536199ec 2324 *rhash = (unsigned char)((*psig >> 8) & 0xff);
4d43ee28 2325 if (rsig != NULL)
536199ec 2326 *rsig = (unsigned char)(*psig & 0xff);
263ff2c9 2327 lu = tls1_lookup_sigalg(s, *psig);
4d43ee28
DSH		 2328 if (psign != NULL)
2329 *psign = lu != NULL ? lu->sig : NID_undef;
2330 if (phash != NULL)
2331 *phash = lu != NULL ? lu->hash : NID_undef;
2332 if (psignhash != NULL)
2333 *psignhash = lu != NULL ? lu->sigandhash : NID_undef;
0f113f3e 2334 }
348240c6 2335 return (int)numsigalgs;
0f113f3e 2336}
4453cd8c
DSH		 2337
2338int SSL_get_shared_sigalgs(SSL *s, int idx,
0f113f3e
MC		 2339 int *psign, int *phash, int *psignhash,
2340 unsigned char *rsig, unsigned char *rhash)
2341{
4d43ee28 2342 const SIGALG_LOOKUP *shsigalgs;
29948ac8 2343 if (s->shared_sigalgs == NULL
6d047e06 2344 || idx < 0
29948ac8
BK		 2345 || idx >= (int)s->shared_sigalgslen
2346 || s->shared_sigalgslen > INT_MAX)
0f113f3e 2347 return 0;
29948ac8 2348 shsigalgs = s->shared_sigalgs[idx];
4d43ee28
DSH		 2349 if (phash != NULL)
2350 *phash = shsigalgs->hash;
2351 if (psign != NULL)
2352 *psign = shsigalgs->sig;
2353 if (psignhash != NULL)
2354 *psignhash = shsigalgs->sigandhash;
2355 if (rsig != NULL)
2356 *rsig = (unsigned char)(shsigalgs->sigalg & 0xff);
2357 if (rhash != NULL)
2358 *rhash = (unsigned char)((shsigalgs->sigalg >> 8) & 0xff);
29948ac8 2359 return (int)s->shared_sigalgslen;
0f113f3e
MC		 2360}
2361
787ebcaf
DSH		 2362/* Maximum possible number of unique entries in sigalgs array */
2363#define TLS_MAX_SIGALGCNT (OSSL_NELEM(sigalg_lookup_tbl) * 2)
0f229cce 2364
0f113f3e
MC		 2365typedef struct {
2366 size_t sigalgcnt;
fd5e1a8c
BK		 2367 /* TLSEXT_SIGALG_XXX values */
2368 uint16_t sigalgs[TLS_MAX_SIGALGCNT];
0f113f3e 2369} sig_cb_st;
0f229cce 2370
431f458d
DSH		 2371static void get_sigorhash(int *psig, int *phash, const char *str)
2372{
2373 if (strcmp(str, "RSA") == 0) {
2374 *psig = EVP_PKEY_RSA;
b2eb6998
DSH		 2375 } else if (strcmp(str, "RSA-PSS") == 0 || strcmp(str, "PSS") == 0) {
2376 *psig = EVP_PKEY_RSA_PSS;
431f458d
DSH		 2377 } else if (strcmp(str, "DSA") == 0) {
2378 *psig = EVP_PKEY_DSA;
2379 } else if (strcmp(str, "ECDSA") == 0) {
2380 *psig = EVP_PKEY_EC;
2381 } else {
2382 *phash = OBJ_sn2nid(str);
2383 if (*phash == NID_undef)
2384 *phash = OBJ_ln2nid(str);
2385 }
2386}
787ebcaf
DSH		 2387/* Maximum length of a signature algorithm string component */
2388#define TLS_MAX_SIGSTRING_LEN 40
431f458d 2389
0f229cce 2390static int sig_cb(const char *elem, int len, void *arg)
0f113f3e
MC		 2391{
2392 sig_cb_st *sarg = arg;
2393 size_t i;
fd5e1a8c 2394 const SIGALG_LOOKUP *s;
787ebcaf 2395 char etmp[TLS_MAX_SIGSTRING_LEN], *p;
431f458d 2396 int sig_alg = NID_undef, hash_alg = NID_undef;
2747d73c
KR		 2397 if (elem == NULL)
2398 return 0;
787ebcaf 2399 if (sarg->sigalgcnt == TLS_MAX_SIGALGCNT)
0f113f3e
MC		 2400 return 0;
2401 if (len > (int)(sizeof(etmp) - 1))
2402 return 0;
2403 memcpy(etmp, elem, len);
2404 etmp[len] = 0;
2405 p = strchr(etmp, '+');
fd5e1a8c
BK		 2406 /*
2407 * We only allow SignatureSchemes listed in the sigalg_lookup_tbl;
2408 * if there's no '+' in the provided name, look for the new-style combined
2409 * name. If not, match both sig+hash to find the needed SIGALG_LOOKUP.
2410 * Just sig+hash is not unique since TLS 1.3 adds rsa_pss_pss_* and
2411 * rsa_pss_rsae_* that differ only by public key OID; in such cases
2412 * we will pick the _rsae_ variant, by virtue of them appearing earlier
2413 * in the table.
2414 */
8a43a42a 2415 if (p == NULL) {
8a43a42a
DSH		 2416 for (i = 0, s = sigalg_lookup_tbl; i < OSSL_NELEM(sigalg_lookup_tbl);
2417 i++, s++) {
2418 if (s->name != NULL && strcmp(etmp, s->name) == 0) {
fd5e1a8c 2419 sarg->sigalgs[sarg->sigalgcnt++] = s->sigalg;
8a43a42a
DSH		 2420 break;
2421 }
2422 }
fd5e1a8c
BK		 2423 if (i == OSSL_NELEM(sigalg_lookup_tbl))
2424 return 0;
8a43a42a
DSH		 2425 } else {
2426 *p = 0;
2427 p++;
2428 if (*p == 0)
2429 return 0;
2430 get_sigorhash(&sig_alg, &hash_alg, etmp);
2431 get_sigorhash(&sig_alg, &hash_alg, p);
fd5e1a8c
BK		 2432 if (sig_alg == NID_undef || hash_alg == NID_undef)
2433 return 0;
2434 for (i = 0, s = sigalg_lookup_tbl; i < OSSL_NELEM(sigalg_lookup_tbl);
2435 i++, s++) {
2436 if (s->hash == hash_alg && s->sig == sig_alg) {
2437 sarg->sigalgs[sarg->sigalgcnt++] = s->sigalg;
2438 break;
2439 }
2440 }
2441 if (i == OSSL_NELEM(sigalg_lookup_tbl))
2442 return 0;
8a43a42a 2443 }
0f113f3e 2444
fd5e1a8c
BK		 2445 /* Reject duplicates */
2446 for (i = 0; i < sarg->sigalgcnt - 1; i++) {
c1acef92 2447 if (sarg->sigalgs[i] == sarg->sigalgs[sarg->sigalgcnt - 1]) {
fd5e1a8c 2448 sarg->sigalgcnt--;
0f113f3e 2449 return 0;
fd5e1a8c 2450 }
0f113f3e 2451 }
0f113f3e
MC		 2452 return 1;
2453}
2454
2455/*
9d22666e 2456 * Set supported signature algorithms based on a colon separated list of the
0f113f3e
MC		 2457 * form sig+hash e.g. RSA+SHA512:DSA+SHA512
2458 */
3dbc46df 2459int tls1_set_sigalgs_list(CERT *c, const char *str, int client)
0f113f3e
MC		 2460{
2461 sig_cb_st sig;
2462 sig.sigalgcnt = 0;
2463 if (!CONF_parse_list(str, ':', 1, sig_cb, &sig))
2464 return 0;
2465 if (c == NULL)
2466 return 1;
fd5e1a8c
BK		 2467 return tls1_set_raw_sigalgs(c, sig.sigalgs, sig.sigalgcnt, client);
2468}
2469
2470int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen,
2471 int client)
2472{
2473 uint16_t *sigalgs;
2474
cdb10bae 2475 if ((sigalgs = OPENSSL_malloc(salglen * sizeof(*sigalgs))) == NULL) {
6849b73c 2476 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
fd5e1a8c 2477 return 0;
cdb10bae 2478 }
fd5e1a8c
BK		 2479 memcpy(sigalgs, psigs, salglen * sizeof(*sigalgs));
2480
2481 if (client) {
2482 OPENSSL_free(c->client_sigalgs);
2483 c->client_sigalgs = sigalgs;
2484 c->client_sigalgslen = salglen;
2485 } else {
2486 OPENSSL_free(c->conf_sigalgs);
2487 c->conf_sigalgs = sigalgs;
2488 c->conf_sigalgslen = salglen;
2489 }
2490
2491 return 1;
0f113f3e
MC		 2492}
2493
a230b26e 2494int tls1_set_sigalgs(CERT *c, const int *psig_nids, size_t salglen, int client)
0f113f3e 2495{
98c792d1 2496 uint16_t *sigalgs, *sptr;
0f113f3e 2497 size_t i;
63c1df09 2498
0f113f3e
MC		 2499 if (salglen & 1)
2500 return 0;
cdb10bae 2501 if ((sigalgs = OPENSSL_malloc((salglen / 2) * sizeof(*sigalgs))) == NULL) {
6849b73c 2502 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 2503 return 0;
cdb10bae 2504 }
0f113f3e 2505 for (i = 0, sptr = sigalgs; i < salglen; i += 2) {
63c1df09 2506 size_t j;
7a531ee4 2507 const SIGALG_LOOKUP *curr;
63c1df09
MC		 2508 int md_id = *psig_nids++;
2509 int sig_id = *psig_nids++;
2510
2511 for (j = 0, curr = sigalg_lookup_tbl; j < OSSL_NELEM(sigalg_lookup_tbl);
2512 j++, curr++) {
fe3066ee 2513 if (curr->hash == md_id && curr->sig == sig_id) {
63c1df09
MC		 2514 *sptr++ = curr->sigalg;
2515 break;
2516 }
2517 }
0f113f3e 2518
63c1df09 2519 if (j == OSSL_NELEM(sigalg_lookup_tbl))
0f113f3e 2520 goto err;
0f113f3e
MC		 2521 }
2522
2523 if (client) {
b548a1f1 2524 OPENSSL_free(c->client_sigalgs);
0f113f3e 2525 c->client_sigalgs = sigalgs;
7a531ee4 2526 c->client_sigalgslen = salglen / 2;
0f113f3e 2527 } else {
b548a1f1 2528 OPENSSL_free(c->conf_sigalgs);
0f113f3e 2529 c->conf_sigalgs = sigalgs;
7a531ee4 2530 c->conf_sigalgslen = salglen / 2;
0f113f3e
MC		 2531 }
2532
2533 return 1;
2534
2535 err:
2536 OPENSSL_free(sigalgs);
2537 return 0;
2538}
4453cd8c 2539
29948ac8 2540static int tls1_check_sig_alg(SSL *s, X509 *x, int default_nid)
0f113f3e 2541{
5235ef44 2542 int sig_nid, use_pc_sigalgs = 0;
0f113f3e 2543 size_t i;
5235ef44
MC		 2544 const SIGALG_LOOKUP *sigalg;
2545 size_t sigalgslen;
0f113f3e
MC		 2546 if (default_nid == -1)
2547 return 1;
2548 sig_nid = X509_get_signature_nid(x);
2549 if (default_nid)
2550 return sig_nid == default_nid ? 1 : 0;
5235ef44
MC		 2551
2552 if (SSL_IS_TLS13(s) && s->s3.tmp.peer_cert_sigalgs != NULL) {
2553 /*
2554 * If we're in TLSv1.3 then we only get here if we're checking the
2555 * chain. If the peer has specified peer_cert_sigalgs then we use them
2556 * otherwise we default to normal sigalgs.
2557 */
2558 sigalgslen = s->s3.tmp.peer_cert_sigalgslen;
2559 use_pc_sigalgs = 1;
2560 } else {
2561 sigalgslen = s->shared_sigalgslen;
2562 }
2563 for (i = 0; i < sigalgslen; i++) {
2564 sigalg = use_pc_sigalgs
263ff2c9 2565 ? tls1_lookup_sigalg(s, s->s3.tmp.peer_cert_sigalgs[i])
5235ef44 2566 : s->shared_sigalgs[i];
a87f3fe0 2567 if (sigalg != NULL && sig_nid == sigalg->sigandhash)
0f113f3e 2568 return 1;
5235ef44 2569 }
0f113f3e
MC		 2570 return 0;
2571}
2572
6dbb6219
DSH		 2573/* Check to see if a certificate issuer name matches list of CA names */
2574static int ssl_check_ca_name(STACK_OF(X509_NAME) *names, X509 *x)
0f113f3e 2575{
8cc86b81 2576 const X509_NAME *nm;
0f113f3e
MC		 2577 int i;
2578 nm = X509_get_issuer_name(x);
2579 for (i = 0; i < sk_X509_NAME_num(names); i++) {
2580 if (!X509_NAME_cmp(nm, sk_X509_NAME_value(names, i)))
2581 return 1;
2582 }
2583 return 0;
2584}
2585
2586/*
2587 * Check certificate chain is consistent with TLS extensions and is usable by
2588 * server. This servers two purposes: it allows users to check chains before
2589 * passing them to the server and it allows the server to check chains before
2590 * attempting to use them.
d61ff83b 2591 */
6dbb6219 2592
69687aa8 2593/* Flags which need to be set for a certificate when strict mode not set */
6dbb6219 2594
e481f9b9 2595#define CERT_PKEY_VALID_FLAGS \
0f113f3e 2596 (CERT_PKEY_EE_SIGNATURE|CERT_PKEY_EE_PARAM)
6dbb6219 2597/* Strict mode flags */
e481f9b9 2598#define CERT_PKEY_STRICT_FLAGS \
0f113f3e
MC		 2599 (CERT_PKEY_VALID_FLAGS|CERT_PKEY_CA_SIGNATURE|CERT_PKEY_CA_PARAM \
2600 | CERT_PKEY_ISSUER_NAME|CERT_PKEY_CERT_TYPE)
6dbb6219 2601
d61ff83b 2602int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
0f113f3e
MC		 2603 int idx)
2604{
2605 int i;
2606 int rv = 0;
2607 int check_flags = 0, strict_mode;
2608 CERT_PKEY *cpk = NULL;
2609 CERT *c = s->cert;
f7d53487 2610 uint32_t *pvalid;
0f113f3e
MC		 2611 unsigned int suiteb_flags = tls1_suiteb(s);
2612 /* idx == -1 means checking server chains */
2613 if (idx != -1) {
2614 /* idx == -2 means checking client certificate chains */
2615 if (idx == -2) {
2616 cpk = c->key;
348240c6 2617 idx = (int)(cpk - c->pkeys);
0f113f3e
MC		 2618 } else
2619 cpk = c->pkeys + idx;
555cbb32 2620 pvalid = s->s3.tmp.valid_flags + idx;
0f113f3e
MC		 2621 x = cpk->x509;
2622 pk = cpk->privatekey;
2623 chain = cpk->chain;
2624 strict_mode = c->cert_flags & SSL_CERT_FLAGS_CHECK_TLS_STRICT;
2625 /* If no cert or key, forget it */
2626 if (!x || !pk)
2627 goto end;
0f113f3e 2628 } else {
52fd27f9
DSH		 2629 size_t certidx;
2630
0f113f3e 2631 if (!x || !pk)
d813f9eb 2632 return 0;
52fd27f9
DSH		 2633
2634 if (ssl_cert_lookup_by_pkey(pk, &certidx) == NULL)
d813f9eb 2635 return 0;
52fd27f9 2636 idx = certidx;
555cbb32 2637 pvalid = s->s3.tmp.valid_flags + idx;
6383d316 2638
0f113f3e
MC		 2639 if (c->cert_flags & SSL_CERT_FLAGS_CHECK_TLS_STRICT)
2640 check_flags = CERT_PKEY_STRICT_FLAGS;
2641 else
2642 check_flags = CERT_PKEY_VALID_FLAGS;
2643 strict_mode = 1;
2644 }
2645
2646 if (suiteb_flags) {
2647 int ok;
2648 if (check_flags)
2649 check_flags |= CERT_PKEY_SUITEB;
2650 ok = X509_chain_check_suiteb(NULL, x, chain, suiteb_flags);
2651 if (ok == X509_V_OK)
2652 rv |= CERT_PKEY_SUITEB;
2653 else if (!check_flags)
2654 goto end;
2655 }
2656
2657 /*
2658 * Check all signature algorithms are consistent with signature
2659 * algorithms extension if TLS 1.2 or later and strict mode.
2660 */
2661 if (TLS1_get_version(s) >= TLS1_2_VERSION && strict_mode) {
2662 int default_nid;
536199ec 2663 int rsign = 0;
555cbb32
TS		 2664 if (s->s3.tmp.peer_cert_sigalgs != NULL
2665 || s->s3.tmp.peer_sigalgs != NULL) {
0f113f3e
MC		 2666 default_nid = 0;
2667 /* If no sigalgs extension use defaults from RFC5246 */
c589c34e 2668 } else {
0f113f3e 2669 switch (idx) {
d0ff28f8 2670 case SSL_PKEY_RSA:
536199ec 2671 rsign = EVP_PKEY_RSA;
0f113f3e
MC		 2672 default_nid = NID_sha1WithRSAEncryption;
2673 break;
2674
2675 case SSL_PKEY_DSA_SIGN:
536199ec 2676 rsign = EVP_PKEY_DSA;
0f113f3e
MC		 2677 default_nid = NID_dsaWithSHA1;
2678 break;
2679
2680 case SSL_PKEY_ECC:
536199ec 2681 rsign = EVP_PKEY_EC;
0f113f3e
MC		 2682 default_nid = NID_ecdsa_with_SHA1;
2683 break;
2684
e44380a9 2685 case SSL_PKEY_GOST01:
536199ec 2686 rsign = NID_id_GostR3410_2001;
e44380a9
DB		 2687 default_nid = NID_id_GostR3411_94_with_GostR3410_2001;
2688 break;
2689
2690 case SSL_PKEY_GOST12_256:
536199ec 2691 rsign = NID_id_GostR3410_2012_256;
e44380a9
DB		 2692 default_nid = NID_id_tc26_signwithdigest_gost3410_2012_256;
2693 break;
2694
2695 case SSL_PKEY_GOST12_512:
536199ec 2696 rsign = NID_id_GostR3410_2012_512;
e44380a9
DB		 2697 default_nid = NID_id_tc26_signwithdigest_gost3410_2012_512;
2698 break;
2699
0f113f3e
MC		 2700 default:
2701 default_nid = -1;
2702 break;
2703 }
2704 }
2705 /*
2706 * If peer sent no signature algorithms extension and we have set
2707 * preferred signature algorithms check we support sha1.
2708 */
2709 if (default_nid > 0 && c->conf_sigalgs) {
2710 size_t j;
98c792d1 2711 const uint16_t *p = c->conf_sigalgs;
703bcee0 2712 for (j = 0; j < c->conf_sigalgslen; j++, p++) {
263ff2c9 2713 const SIGALG_LOOKUP *lu = tls1_lookup_sigalg(s, *p);
44b6318f
DSH		 2714
2715 if (lu != NULL && lu->hash == NID_sha1 && lu->sig == rsign)
0f113f3e
MC		 2716 break;
2717 }
2718 if (j == c->conf_sigalgslen) {
2719 if (check_flags)
2720 goto skip_sigs;
2721 else
2722 goto end;
2723 }
2724 }
2725 /* Check signature algorithm of each cert in chain */
5235ef44
MC		 2726 if (SSL_IS_TLS13(s)) {
2727 /*
2728 * We only get here if the application has called SSL_check_chain(),
2729 * so check_flags is always set.
2730 */
2731 if (find_sig_alg(s, x, pk) != NULL)
2732 rv |= CERT_PKEY_EE_SIGNATURE;
2733 } else if (!tls1_check_sig_alg(s, x, default_nid)) {
0f113f3e
MC		 2734 if (!check_flags)
2735 goto end;
2736 } else
2737 rv |= CERT_PKEY_EE_SIGNATURE;
2738 rv |= CERT_PKEY_CA_SIGNATURE;
2739 for (i = 0; i < sk_X509_num(chain); i++) {
29948ac8 2740 if (!tls1_check_sig_alg(s, sk_X509_value(chain, i), default_nid)) {
0f113f3e
MC		 2741 if (check_flags) {
2742 rv &= ~CERT_PKEY_CA_SIGNATURE;
2743 break;
2744 } else
2745 goto end;
2746 }
2747 }
2748 }
2749 /* Else not TLS 1.2, so mark EE and CA signing algorithms OK */
2750 else if (check_flags)
2751 rv |= CERT_PKEY_EE_SIGNATURE | CERT_PKEY_CA_SIGNATURE;
2752 skip_sigs:
2753 /* Check cert parameters are consistent */
9195ddcd 2754 if (tls1_check_cert_param(s, x, 1))
0f113f3e
MC		 2755 rv |= CERT_PKEY_EE_PARAM;
2756 else if (!check_flags)
2757 goto end;
2758 if (!s->server)
2759 rv |= CERT_PKEY_CA_PARAM;
2760 /* In strict mode check rest of chain too */
2761 else if (strict_mode) {
2762 rv |= CERT_PKEY_CA_PARAM;
2763 for (i = 0; i < sk_X509_num(chain); i++) {
2764 X509 *ca = sk_X509_value(chain, i);
2765 if (!tls1_check_cert_param(s, ca, 0)) {
2766 if (check_flags) {
2767 rv &= ~CERT_PKEY_CA_PARAM;
2768 break;
2769 } else
2770 goto end;
2771 }
2772 }
2773 }
2774 if (!s->server && strict_mode) {
2775 STACK_OF(X509_NAME) *ca_dn;
2776 int check_type = 0;
c2041da8
RL		 2777
2778 if (EVP_PKEY_is_a(pk, "RSA"))
0f113f3e 2779 check_type = TLS_CT_RSA_SIGN;
c2041da8 2780 else if (EVP_PKEY_is_a(pk, "DSA"))
0f113f3e 2781 check_type = TLS_CT_DSS_SIGN;
c2041da8 2782 else if (EVP_PKEY_is_a(pk, "EC"))
0f113f3e 2783 check_type = TLS_CT_ECDSA_SIGN;
c2041da8 2784
0f113f3e 2785 if (check_type) {
555cbb32 2786 const uint8_t *ctypes = s->s3.tmp.ctype;
75c13e78
DSH		 2787 size_t j;
2788
555cbb32 2789 for (j = 0; j < s->s3.tmp.ctype_len; j++, ctypes++) {
75c13e78 2790 if (*ctypes == check_type) {
0f113f3e
MC		 2791 rv |= CERT_PKEY_CERT_TYPE;
2792 break;
2793 }
2794 }
2795 if (!(rv & CERT_PKEY_CERT_TYPE) && !check_flags)
2796 goto end;
75c13e78 2797 } else {
0f113f3e 2798 rv |= CERT_PKEY_CERT_TYPE;
75c13e78 2799 }
0f113f3e 2800
555cbb32 2801 ca_dn = s->s3.tmp.peer_ca_names;
0f113f3e
MC		 2802
2803 if (!sk_X509_NAME_num(ca_dn))
2804 rv |= CERT_PKEY_ISSUER_NAME;
2805
2806 if (!(rv & CERT_PKEY_ISSUER_NAME)) {
2807 if (ssl_check_ca_name(ca_dn, x))
2808 rv |= CERT_PKEY_ISSUER_NAME;
2809 }
2810 if (!(rv & CERT_PKEY_ISSUER_NAME)) {
2811 for (i = 0; i < sk_X509_num(chain); i++) {
2812 X509 *xtmp = sk_X509_value(chain, i);
2813 if (ssl_check_ca_name(ca_dn, xtmp)) {
2814 rv |= CERT_PKEY_ISSUER_NAME;
2815 break;
2816 }
2817 }
2818 }
2819 if (!check_flags && !(rv & CERT_PKEY_ISSUER_NAME))
2820 goto end;
2821 } else
2822 rv |= CERT_PKEY_ISSUER_NAME | CERT_PKEY_CERT_TYPE;
2823
2824 if (!check_flags || (rv & check_flags) == check_flags)
2825 rv |= CERT_PKEY_VALID;
2826
2827 end:
2828
a8bb912d
DSH		 2829 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2830 rv |= *pvalid & (CERT_PKEY_EXPLICIT_SIGN | CERT_PKEY_SIGN);
2831 else
0f113f3e
MC		 2832 rv |= CERT_PKEY_SIGN | CERT_PKEY_EXPLICIT_SIGN;
2833
2834 /*
2835 * When checking a CERT_PKEY structure all flags are irrelevant if the
2836 * chain is invalid.
2837 */
2838 if (!check_flags) {
a8bb912d 2839 if (rv & CERT_PKEY_VALID) {
6383d316 2840 *pvalid = rv;
a8bb912d
DSH		 2841 } else {
2842 /* Preserve sign and explicit sign flag, clear rest */
2843 *pvalid &= CERT_PKEY_EXPLICIT_SIGN | CERT_PKEY_SIGN;
0f113f3e
MC		 2844 return 0;
2845 }
2846 }
2847 return rv;
2848}
d61ff83b
DSH		 2849
2850/* Set validity of certificates in an SSL structure */
2851void tls1_set_cert_validity(SSL *s)
0f113f3e 2852{
d0ff28f8 2853 tls1_check_chain(s, NULL, NULL, NULL, SSL_PKEY_RSA);
045d078a 2854 tls1_check_chain(s, NULL, NULL, NULL, SSL_PKEY_RSA_PSS_SIGN);
17dd65e6 2855 tls1_check_chain(s, NULL, NULL, NULL, SSL_PKEY_DSA_SIGN);
17dd65e6 2856 tls1_check_chain(s, NULL, NULL, NULL, SSL_PKEY_ECC);
e44380a9
DB		 2857 tls1_check_chain(s, NULL, NULL, NULL, SSL_PKEY_GOST01);
2858 tls1_check_chain(s, NULL, NULL, NULL, SSL_PKEY_GOST12_256);
2859 tls1_check_chain(s, NULL, NULL, NULL, SSL_PKEY_GOST12_512);
3d234c9e 2860 tls1_check_chain(s, NULL, NULL, NULL, SSL_PKEY_ED25519);
0e1d6ecf 2861 tls1_check_chain(s, NULL, NULL, NULL, SSL_PKEY_ED448);
0f113f3e
MC		 2862}
2863
69687aa8 2864/* User level utility function to check a chain is suitable */
18d71588 2865int SSL_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain)
0f113f3e
MC		 2866{
2867 return tls1_check_chain(s, x, pk, chain, -1);
2868}
d61ff83b 2869
091f6074 2870EVP_PKEY *ssl_get_auto_dh(SSL *s)
0f113f3e 2871{
091f6074
MC		 2872 EVP_PKEY *dhp = NULL;
2873 BIGNUM *p;
0f113f3e 2874 int dh_secbits = 80;
091f6074
MC		 2875 EVP_PKEY_CTX *pctx = NULL;
2876 OSSL_PARAM_BLD *tmpl = NULL;
2877 OSSL_PARAM *params = NULL;
2878
7646610b
HK		 2879 if (s->cert->dh_tmp_auto != 2) {
2880 if (s->s3.tmp.new_cipher->algorithm_auth & (SSL_aNULL | SSL_aPSK)) {
2881 if (s->s3.tmp.new_cipher->strength_bits == 256)
2882 dh_secbits = 128;
2883 else
2884 dh_secbits = 80;
2885 } else {
2886 if (s->s3.tmp.cert == NULL)
2887 return NULL;
2888 dh_secbits = EVP_PKEY_security_bits(s->s3.tmp.cert->privatekey);
2889 }
0f113f3e
MC		 2890 }
2891
7646610b
HK		 2892 if (dh_secbits >= 192)
2893 p = BN_get_rfc3526_prime_8192(NULL);
2894 else if (dh_secbits >= 152)
2895 p = BN_get_rfc3526_prime_4096(NULL);
2896 else if (dh_secbits >= 128)
2897 p = BN_get_rfc3526_prime_3072(NULL);
2898 else if (dh_secbits >= 112)
2899 p = BN_get_rfc3526_prime_2048(NULL);
2900 else
2901 p = BN_get_rfc2409_prime_1024(NULL);
091f6074
MC		 2902 if (p == NULL)
2903 goto err;
2904
2905 pctx = EVP_PKEY_CTX_new_from_name(s->ctx->libctx, "DH", s->ctx->propq);
2906 if (pctx == NULL
2907 || EVP_PKEY_key_fromdata_init(pctx) != 1)
2908 goto err;
2909
2910 tmpl = OSSL_PARAM_BLD_new();
2911 if (tmpl == NULL
2912 || !OSSL_PARAM_BLD_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_P, p)
2913 || !OSSL_PARAM_BLD_push_uint(tmpl, OSSL_PKEY_PARAM_FFC_G, 2))
2914 goto err;
2915
2916 params = OSSL_PARAM_BLD_to_param(tmpl);
2917 if (params == NULL || EVP_PKEY_fromdata(pctx, &dhp, params) != 1)
2918 goto err;
2919
2920err:
2921 OSSL_PARAM_BLD_free_params(params);
2922 OSSL_PARAM_BLD_free(tmpl);
2923 EVP_PKEY_CTX_free(pctx);
2924 BN_free(p);
7646610b 2925 return dhp;
0f113f3e 2926}
b362ccab
DSH		 2927
2928static int ssl_security_cert_key(SSL *s, SSL_CTX *ctx, X509 *x, int op)
0f113f3e 2929{
72245f34 2930 int secbits = -1;
8382fd3a 2931 EVP_PKEY *pkey = X509_get0_pubkey(x);
0f113f3e 2932 if (pkey) {
72245f34
DSH		 2933 /*
2934 * If no parameters this will return -1 and fail using the default
2935 * security callback for any non-zero security level. This will
2936 * reject keys which omit parameters but this only affects DSA and
2937 * omission of parameters is never (?) done in practice.
2938 */
0f113f3e 2939 secbits = EVP_PKEY_security_bits(pkey);
72245f34 2940 }
0f113f3e
MC		 2941 if (s)
2942 return ssl_security(s, op, secbits, 0, x);
2943 else
2944 return ssl_ctx_security(ctx, op, secbits, 0, x);
2945}
b362ccab
DSH		 2946
2947static int ssl_security_cert_sig(SSL *s, SSL_CTX *ctx, X509 *x, int op)
0f113f3e
MC		 2948{
2949 /* Lookup signature algorithm digest */
65e89736 2950 int secbits, nid, pknid;
221c7b55
DSH		 2951 /* Don't check signature if self signed */
2952 if ((X509_get_extension_flags(x) & EXFLAG_SS) != 0)
2953 return 1;
65e89736
DSH		 2954 if (!X509_get_signature_info(x, &nid, &pknid, &secbits, NULL))
2955 secbits = -1;
2956 /* If digest NID not defined use signature NID */
2957 if (nid == NID_undef)
2958 nid = pknid;
0f113f3e 2959 if (s)
65e89736 2960 return ssl_security(s, op, secbits, nid, x);
0f113f3e 2961 else
65e89736 2962 return ssl_ctx_security(ctx, op, secbits, nid, x);
0f113f3e 2963}
b362ccab
DSH		 2964
2965int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee)
0f113f3e
MC		 2966{
2967 if (vfy)
2968 vfy = SSL_SECOP_PEER;
2969 if (is_ee) {
2970 if (!ssl_security_cert_key(s, ctx, x, SSL_SECOP_EE_KEY | vfy))
2971 return SSL_R_EE_KEY_TOO_SMALL;
2972 } else {
2973 if (!ssl_security_cert_key(s, ctx, x, SSL_SECOP_CA_KEY | vfy))
2974 return SSL_R_CA_KEY_TOO_SMALL;
2975 }
2976 if (!ssl_security_cert_sig(s, ctx, x, SSL_SECOP_CA_MD | vfy))
2977 return SSL_R_CA_MD_TOO_WEAK;
2978 return 1;
2979}
2980
2981/*
69687aa8
F		 2982 * Check security of a chain, if |sk| includes the end entity certificate then
2983 * |x| is NULL. If |vfy| is 1 then we are verifying a peer chain and not sending
0f113f3e 2984 * one to the peer. Return values: 1 if ok otherwise error code to use
b362ccab
DSH		 2985 */
2986
2987int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *x, int vfy)
0f113f3e
MC		 2988{
2989 int rv, start_idx, i;
2990 if (x == NULL) {
2991 x = sk_X509_value(sk, 0);
2992 start_idx = 1;
2993 } else
2994 start_idx = 0;
2995
2996 rv = ssl_security_cert(s, NULL, x, vfy, 1);
2997 if (rv != 1)
2998 return rv;
2999
3000 for (i = start_idx; i < sk_X509_num(sk); i++) {
3001 x = sk_X509_value(sk, i);
3002 rv = ssl_security_cert(s, NULL, x, vfy, 0);
3003 if (rv != 1)
3004 return rv;
3005 }
3006 return 1;
3007}
93a77f9e 3008
7f6b466b
DSH		 3009/*
3010 * For TLS 1.2 servers check if we have a certificate which can be used
b46867d7 3011 * with the signature algorithm "lu" and return index of certificate.
7f6b466b
DSH		 3012 */
3013
b46867d7 3014static int tls12_get_cert_sigalg_idx(const SSL *s, const SIGALG_LOOKUP *lu)
7f6b466b 3015{
b46867d7
DSH		 3016 int sig_idx = lu->sig_idx;
3017 const SSL_CERT_LOOKUP *clu = ssl_cert_lookup_by_idx(sig_idx);
7f6b466b
DSH		 3018
3019 /* If not recognised or not supported by cipher mask it is not suitable */
b8fef8ee 3020 if (clu == NULL
555cbb32 3021 || (clu->amask & s->s3.tmp.new_cipher->algorithm_auth) == 0
b8fef8ee 3022 || (clu->nid == EVP_PKEY_RSA_PSS
555cbb32 3023 && (s->s3.tmp.new_cipher->algorithm_mkey & SSL_kRSA) != 0))
b46867d7
DSH		 3024 return -1;
3025
555cbb32 3026 return s->s3.tmp.valid_flags[sig_idx] & CERT_PKEY_VALID ? sig_idx : -1;
7f6b466b
DSH		 3027}
3028
c589c34e 3029/*
5235ef44
MC		 3030 * Checks the given cert against signature_algorithm_cert restrictions sent by
3031 * the peer (if any) as well as whether the hash from the sigalg is usable with
3032 * the key.
3033 * Returns true if the cert is usable and false otherwise.
c589c34e 3034 */
5235ef44
MC		 3035static int check_cert_usable(SSL *s, const SIGALG_LOOKUP *sig, X509 *x,
3036 EVP_PKEY *pkey)
c589c34e
BK		 3037{
3038 const SIGALG_LOOKUP *lu;
ecbb2fca 3039 int mdnid, pknid, supported;
c589c34e
BK		 3040 size_t i;
3041
b5a27688
DW		 3042 /*
3043 * If the given EVP_PKEY cannot supporting signing with this sigalg,
3044 * the answer is simply 'no'.
3045 */
3046 ERR_set_mark();
3047 supported = EVP_PKEY_supports_digest_nid(pkey, sig->hash);
3048 ERR_pop_to_mark();
3049 if (supported == 0)
3050 return 0;
3051
3052 /*
3053 * The TLS 1.3 signature_algorithms_cert extension places restrictions
3054 * on the sigalg with which the certificate was signed (by its issuer).
3055 */
555cbb32 3056 if (s->s3.tmp.peer_cert_sigalgs != NULL) {
b5a27688
DW		 3057 if (!X509_get_signature_info(x, &mdnid, &pknid, NULL, NULL))
3058 return 0;
555cbb32 3059 for (i = 0; i < s->s3.tmp.peer_cert_sigalgslen; i++) {
263ff2c9 3060 lu = tls1_lookup_sigalg(s, s->s3.tmp.peer_cert_sigalgs[i]);
b5a27688 3061 if (lu == NULL)
c589c34e 3062 continue;
ecbb2fca 3063
5235ef44 3064 /*
b5a27688
DW		 3065 * TODO this does not differentiate between the
3066 * rsa_pss_pss_* and rsa_pss_rsae_* schemes since we do not
3067 * have a chain here that lets us look at the key OID in the
3068 * signing certificate.
5235ef44 3069 */
b5a27688
DW		 3070 if (mdnid == lu->hash && pknid == lu->sig)
3071 return 1;
c589c34e
BK		 3072 }
3073 return 0;
3074 }
b5a27688 3075
5235ef44 3076 /*
b5a27688
DW		 3077 * Without signat_algorithms_cert, any certificate for which we have
3078 * a viable public key is permitted.
5235ef44 3079 */
ecbb2fca 3080 return 1;
c589c34e
BK		 3081}
3082
5235ef44
MC		 3083/*
3084 * Returns true if |s| has a usable certificate configured for use
3085 * with signature scheme |sig|.
3086 * "Usable" includes a check for presence as well as applying
3087 * the signature_algorithm_cert restrictions sent by the peer (if any).
3088 * Returns false if no usable certificate is found.
3089 */
3090static int has_usable_cert(SSL *s, const SIGALG_LOOKUP *sig, int idx)
3091{
3092 /* TLS 1.2 callers can override sig->sig_idx, but not TLS 1.3 callers. */
3093 if (idx == -1)
3094 idx = sig->sig_idx;
3095 if (!ssl_has_cert(s, idx))
3096 return 0;
3097
3098 return check_cert_usable(s, sig, s->cert->pkeys[idx].x509,
3099 s->cert->pkeys[idx].privatekey);
3100}
3101
3102/*
3103 * Returns true if the supplied cert |x| and key |pkey| is usable with the
3104 * specified signature scheme |sig|, or false otherwise.
3105 */
3106static int is_cert_usable(SSL *s, const SIGALG_LOOKUP *sig, X509 *x,
3107 EVP_PKEY *pkey)
3108{
3109 size_t idx;
3110
3111 if (ssl_cert_lookup_by_pkey(pkey, &idx) == NULL)
3112 return 0;
3113
3114 /* Check the key is consistent with the sig alg */
3115 if ((int)idx != sig->sig_idx)
3116 return 0;
3117
3118 return check_cert_usable(s, sig, x, pkey);
3119}
3120
3121/*
3122 * Find a signature scheme that works with the supplied certificate |x| and key
3123 * |pkey|. |x| and |pkey| may be NULL in which case we additionally look at our
3124 * available certs/keys to find one that works.
3125 */
3126static const SIGALG_LOOKUP *find_sig_alg(SSL *s, X509 *x, EVP_PKEY *pkey)
3127{
3128 const SIGALG_LOOKUP *lu = NULL;
3129 size_t i;
5235ef44 3130 int curve = -1;
5235ef44
MC		 3131 EVP_PKEY *tmppkey;
3132
3133 /* Look for a shared sigalgs matching possible certificates */
3134 for (i = 0; i < s->shared_sigalgslen; i++) {
3135 lu = s->shared_sigalgs[i];
3136
3137 /* Skip SHA1, SHA224, DSA and RSA if not PSS */
3138 if (lu->hash == NID_sha1
3139 || lu->hash == NID_sha224
3140 || lu->sig == EVP_PKEY_DSA
3141 || lu->sig == EVP_PKEY_RSA)
3142 continue;
3143 /* Check that we have a cert, and signature_algorithms_cert */
c8f6c28a 3144 if (!tls1_lookup_md(s->ctx, lu, NULL))
5235ef44
MC		 3145 continue;
3146 if ((pkey == NULL && !has_usable_cert(s, lu, -1))
3147 || (pkey != NULL && !is_cert_usable(s, lu, x, pkey)))
3148 continue;
3149
3150 tmppkey = (pkey != NULL) ? pkey
3151 : s->cert->pkeys[lu->sig_idx].privatekey;
3152
3153 if (lu->sig == EVP_PKEY_EC) {
3154#ifndef OPENSSL_NO_EC
c2041da8
RL		 3155 if (curve == -1)
3156 curve = evp_pkey_get_EC_KEY_curve_nid(tmppkey);
5235ef44
MC		 3157 if (lu->curve != NID_undef && curve != lu->curve)
3158 continue;
3159#else
3160 continue;
3161#endif
3162 } else if (lu->sig == EVP_PKEY_RSA_PSS) {
3163 /* validate that key is large enough for the signature algorithm */
c5f87134 3164 if (!rsa_pss_check_min_key_size(s->ctx, tmppkey, lu))
5235ef44
MC		 3165 continue;
3166 }
3167 break;
3168 }
3169
3170 if (i == s->shared_sigalgslen)
3171 return NULL;
3172
3173 return lu;
3174}
3175
93a77f9e
DSH		 3176/*
3177 * Choose an appropriate signature algorithm based on available certificates
717a265a
DSH		 3178 * Sets chosen certificate and signature algorithm.
3179 *
f63a17d6
MC		 3180 * For servers if we fail to find a required certificate it is a fatal error,
3181 * an appropriate error code is set and a TLS alert is sent.
717a265a 3182 *
f63a17d6 3183 * For clients fatalerrs is set to 0. If a certificate is not suitable it is not
717a265a
DSH		 3184 * a fatal error: we will either try another certificate or not present one
3185 * to the server. In this case no error is set.
93a77f9e 3186 */
f63a17d6 3187int tls_choose_sigalg(SSL *s, int fatalerrs)
93a77f9e 3188{
0972bc5c 3189 const SIGALG_LOOKUP *lu = NULL;
b46867d7 3190 int sig_idx = -1;
0972bc5c 3191
555cbb32
TS		 3192 s->s3.tmp.cert = NULL;
3193 s->s3.tmp.sigalg = NULL;
717a265a 3194
93a77f9e 3195 if (SSL_IS_TLS13(s)) {
5235ef44
MC		 3196 lu = find_sig_alg(s, NULL, NULL);
3197 if (lu == NULL) {
f63a17d6 3198 if (!fatalerrs)
717a265a 3199 return 1;
c48ffbcc 3200 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE,
f63a17d6 3201 SSL_R_NO_SUITABLE_SIGNATURE_ALGORITHM);
0972bc5c
DSH		 3202 return 0;
3203 }
3204 } else {
7f6b466b 3205 /* If ciphersuite doesn't require a cert nothing to do */
555cbb32 3206 if (!(s->s3.tmp.new_cipher->algorithm_auth & SSL_aCERT))
7f6b466b
DSH		 3207 return 1;
3208 if (!s->server && !ssl_has_cert(s, s->cert->key - s->cert->pkeys))
717a265a 3209 return 1;
0972bc5c
DSH		 3210
3211 if (SSL_USE_SIGALGS(s)) {
c589c34e 3212 size_t i;
555cbb32 3213 if (s->s3.tmp.peer_sigalgs != NULL) {
599b586d 3214#ifndef OPENSSL_NO_EC
c2041da8 3215 int curve = -1;
599b586d
DSH		 3216
3217 /* For Suite B need to match signature algorithm to curve */
c2041da8
RL		 3218 if (tls1_suiteb(s))
3219 curve =
3220 evp_pkey_get_EC_KEY_curve_nid(s->cert->pkeys[SSL_PKEY_ECC]
3221 .privatekey);
599b586d 3222#endif
0972bc5c
DSH		 3223
3224 /*
3225 * Find highest preference signature algorithm matching
3226 * cert type
3227 */
29948ac8
BK		 3228 for (i = 0; i < s->shared_sigalgslen; i++) {
3229 lu = s->shared_sigalgs[i];
7f6b466b
DSH		 3230
3231 if (s->server) {
b46867d7 3232 if ((sig_idx = tls12_get_cert_sigalg_idx(s, lu)) == -1)
7f6b466b 3233 continue;
b46867d7
DSH		 3234 } else {
3235 int cc_idx = s->cert->key - s->cert->pkeys;
3236
3237 sig_idx = lu->sig_idx;
c589c34e
BK		 3238 if (cc_idx != sig_idx)
3239 continue;
b2021556 3240 }
c589c34e
BK		 3241 /* Check that we have a cert, and sig_algs_cert */
3242 if (!has_usable_cert(s, lu, sig_idx))
3243 continue;
0fe3db25
NR		 3244 if (lu->sig == EVP_PKEY_RSA_PSS) {
3245 /* validate that key is large enough for the signature algorithm */
bcec0b94 3246 EVP_PKEY *pkey = s->cert->pkeys[sig_idx].privatekey;
0fe3db25 3247
c5f87134 3248 if (!rsa_pss_check_min_key_size(s->ctx, pkey, lu))
0fe3db25
NR		 3249 continue;
3250 }
7f6b466b
DSH		 3251#ifndef OPENSSL_NO_EC
3252 if (curve == -1 || lu->curve == curve)
599b586d 3253#endif
0972bc5c
DSH		 3254 break;
3255 }
db30f432
DB		 3256#ifndef OPENSSL_NO_GOST
3257 /*
3258 * Some Windows-based implementations do not send GOST algorithms indication
3259 * in supported_algorithms extension, so when we have GOST-based ciphersuite,
3260 * we have to assume GOST support.
3261 */
3262 if (i == s->shared_sigalgslen && s->s3.tmp.new_cipher->algorithm_auth & (SSL_aGOST01 | SSL_aGOST12)) {
3263 if ((lu = tls1_get_legacy_sigalg(s, -1)) == NULL) {
3264 if (!fatalerrs)
3265 return 1;
3266 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE,
db30f432
DB		 3267 SSL_R_NO_SUITABLE_SIGNATURE_ALGORITHM);
3268 return 0;
3269 } else {
3270 i = 0;
3271 sig_idx = lu->sig_idx;
3272 }
3273 }
3274#endif
29948ac8 3275 if (i == s->shared_sigalgslen) {
f63a17d6 3276 if (!fatalerrs)
717a265a 3277 return 1;
b8fef8ee 3278 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE,
b8fef8ee 3279 SSL_R_NO_SUITABLE_SIGNATURE_ALGORITHM);
0972bc5c
DSH		 3280 return 0;
3281 }
3282 } else {
3283 /*
3284 * If we have no sigalg use defaults
3285 */
3286 const uint16_t *sent_sigs;
c589c34e 3287 size_t sent_sigslen;
0972bc5c 3288
7f6b466b 3289 if ((lu = tls1_get_legacy_sigalg(s, -1)) == NULL) {
f63a17d6 3290 if (!fatalerrs)
717a265a 3291 return 1;
c48ffbcc 3292 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
a70535f8 3293 SSL_R_NO_SUITABLE_SIGNATURE_ALGORITHM);
0972bc5c
DSH		 3294 return 0;
3295 }
3296
3297 /* Check signature matches a type we sent */
3298 sent_sigslen = tls12_get_psigalgs(s, 1, &sent_sigs);
3299 for (i = 0; i < sent_sigslen; i++, sent_sigs++) {
c589c34e
BK		 3300 if (lu->sigalg == *sent_sigs
3301 && has_usable_cert(s, lu, lu->sig_idx))
0972bc5c
DSH		 3302 break;
3303 }
3304 if (i == sent_sigslen) {
f63a17d6 3305 if (!fatalerrs)
717a265a 3306 return 1;
f63a17d6 3307 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER,
f63a17d6 3308 SSL_R_WRONG_SIGNATURE_TYPE);
0972bc5c
DSH		 3309 return 0;
3310 }
3311 }
3312 } else {
7f6b466b 3313 if ((lu = tls1_get_legacy_sigalg(s, -1)) == NULL) {
f63a17d6 3314 if (!fatalerrs)
717a265a 3315 return 1;
c48ffbcc 3316 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
a70535f8 3317 SSL_R_NO_SUITABLE_SIGNATURE_ALGORITHM);
0972bc5c
DSH		 3318 return 0;
3319 }
3320 }
93a77f9e 3321 }
b46867d7
DSH		 3322 if (sig_idx == -1)
3323 sig_idx = lu->sig_idx;
555cbb32
TS		 3324 s->s3.tmp.cert = &s->cert->pkeys[sig_idx];
3325 s->cert->key = s->s3.tmp.cert;
3326 s->s3.tmp.sigalg = lu;
93a77f9e
DSH		 3327 return 1;
3328}
cf72c757
F		 3329
3330int SSL_CTX_set_tlsext_max_fragment_length(SSL_CTX *ctx, uint8_t mode)
3331{
3332 if (mode != TLSEXT_max_fragment_length_DISABLED
3333 && !IS_MAX_FRAGMENT_LENGTH_EXT_VALID(mode)) {
6849b73c 3334 ERR_raise(ERR_LIB_SSL, SSL_R_SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH);
cf72c757
F		 3335 return 0;
3336 }
3337
3338 ctx->ext.max_fragment_len_mode = mode;
3339 return 1;
3340}
3341
3342int SSL_set_tlsext_max_fragment_length(SSL *ssl, uint8_t mode)
3343{
3344 if (mode != TLSEXT_max_fragment_length_DISABLED
3345 && !IS_MAX_FRAGMENT_LENGTH_EXT_VALID(mode)) {
6849b73c 3346 ERR_raise(ERR_LIB_SSL, SSL_R_SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH);
cf72c757
F		 3347 return 0;
3348 }
3349
3350 ssl->ext.max_fragment_len_mode = mode;
3351 return 1;
3352}
3353
3354uint8_t SSL_SESSION_get_max_fragment_length(const SSL_SESSION *session)
3355{
3356 return session->ext.max_fragment_len_mode;
3357}
a76ce286
P		 3358
3359/*
3360 * Helper functions for HMAC access with legacy support included.
3361 */
3362SSL_HMAC *ssl_hmac_new(const SSL_CTX *ctx)
3363{
3364 SSL_HMAC *ret = OPENSSL_zalloc(sizeof(*ret));
3365 EVP_MAC *mac = NULL;
3366
3367 if (ret == NULL)
3368 return NULL;
3369#ifndef OPENSSL_NO_DEPRECATED_3_0
3370 if (ctx->ext.ticket_key_evp_cb == NULL
3371 && ctx->ext.ticket_key_cb != NULL) {
301fcb28 3372 if (!ssl_hmac_old_new(ret))
a76ce286
P		 3373 goto err;
3374 return ret;
3375 }
3376#endif
7f80980f 3377 mac = EVP_MAC_fetch(ctx->libctx, "HMAC", ctx->propq);
865adf97 3378 if (mac == NULL || (ret->ctx = EVP_MAC_CTX_new(mac)) == NULL)
a76ce286
P		 3379 goto err;
3380 EVP_MAC_free(mac);
3381 return ret;
3382 err:
865adf97 3383 EVP_MAC_CTX_free(ret->ctx);
a76ce286
P		 3384 EVP_MAC_free(mac);
3385 OPENSSL_free(ret);
3386 return NULL;
3387}
3388
3389void ssl_hmac_free(SSL_HMAC *ctx)
3390{
3391 if (ctx != NULL) {
865adf97 3392 EVP_MAC_CTX_free(ctx->ctx);
a76ce286 3393#ifndef OPENSSL_NO_DEPRECATED_3_0
301fcb28 3394 ssl_hmac_old_free(ctx);
a76ce286
P		 3395#endif
3396 OPENSSL_free(ctx);
3397 }
3398}
3399
a76ce286
P		 3400EVP_MAC_CTX *ssl_hmac_get0_EVP_MAC_CTX(SSL_HMAC *ctx)
3401{
3402 return ctx->ctx;
3403}
3404
3405int ssl_hmac_init(SSL_HMAC *ctx, void *key, size_t len, char *md)
3406{
3407 OSSL_PARAM params[3], *p = params;
3408
3409 if (ctx->ctx != NULL) {
3410 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_DIGEST, md, 0);
3411 *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_KEY, key, len);
3412 *p = OSSL_PARAM_construct_end();
865adf97 3413 if (EVP_MAC_CTX_set_params(ctx->ctx, params) && EVP_MAC_init(ctx->ctx))
a76ce286
P		 3414 return 1;
3415 }
3416#ifndef OPENSSL_NO_DEPRECATED_3_0
3417 if (ctx->old_ctx != NULL)
301fcb28 3418 return ssl_hmac_old_init(ctx, key, len, md);
a76ce286
P		 3419#endif
3420 return 0;
3421}
3422
3423int ssl_hmac_update(SSL_HMAC *ctx, const unsigned char *data, size_t len)
3424{
3425 if (ctx->ctx != NULL)
3426 return EVP_MAC_update(ctx->ctx, data, len);
3427#ifndef OPENSSL_NO_DEPRECATED_3_0
3428 if (ctx->old_ctx != NULL)
301fcb28 3429 return ssl_hmac_old_update(ctx, data, len);
a76ce286
P		 3430#endif
3431 return 0;
3432}
3433
3434int ssl_hmac_final(SSL_HMAC *ctx, unsigned char *md, size_t *len,
3435 size_t max_size)
3436{
3437 if (ctx->ctx != NULL)
3438 return EVP_MAC_final(ctx->ctx, md, len, max_size);
3439#ifndef OPENSSL_NO_DEPRECATED_3_0
301fcb28
MC		 3440 if (ctx->old_ctx != NULL)
3441 return ssl_hmac_old_final(ctx, md, len);
a76ce286
P		 3442#endif
3443 return 0;
3444}
3445
3446size_t ssl_hmac_size(const SSL_HMAC *ctx)
3447{
3448 if (ctx->ctx != NULL)
90a2576b 3449 return EVP_MAC_CTX_get_mac_size(ctx->ctx);
a76ce286
P		 3450#ifndef OPENSSL_NO_DEPRECATED_3_0
3451 if (ctx->old_ctx != NULL)
301fcb28 3452 return ssl_hmac_old_size(ctx);
a76ce286
P		 3453#endif
3454 return 0;
3455}
3456
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