2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
5 * Licensed under the OpenSSL license (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
12 #include <sys/types.h>
14 #include "internal/nelem.h"
15 #include "internal/o_dir.h"
16 #include <openssl/bio.h>
17 #include <openssl/pem.h>
18 #include <openssl/x509v3.h>
19 #include <openssl/dh.h>
20 #include <openssl/bn.h>
21 #include <openssl/crypto.h>
22 #include "internal/refcount.h"
23 #include "ssl_local.h"
24 #include "ssl_cert_table.h"
25 #include "internal/thread_once.h"
27 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
28 int op, int bits, int nid, void *other,
31 static CRYPTO_ONCE ssl_x509_store_ctx_once = CRYPTO_ONCE_STATIC_INIT;
32 static volatile int ssl_x509_store_ctx_idx = -1;
34 DEFINE_RUN_ONCE_STATIC(ssl_x509_store_ctx_init)
36 ssl_x509_store_ctx_idx = X509_STORE_CTX_get_ex_new_index(0,
37 "SSL for verify callback",
39 return ssl_x509_store_ctx_idx >= 0;
42 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
45 if (!RUN_ONCE(&ssl_x509_store_ctx_once, ssl_x509_store_ctx_init))
47 return ssl_x509_store_ctx_idx;
50 CERT *ssl_cert_new(void)
52 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
55 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
59 ret->key = &(ret->pkeys[SSL_PKEY_RSA]);
61 ret->sec_cb = ssl_security_default_callback;
62 ret->sec_level = OPENSSL_TLS_SECURITY_LEVEL;
64 ret->lock = CRYPTO_THREAD_lock_new();
65 if (ret->lock == NULL) {
66 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
74 CERT *ssl_cert_dup(CERT *cert)
76 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
80 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
85 ret->key = &ret->pkeys[cert->key - cert->pkeys];
86 ret->lock = CRYPTO_THREAD_lock_new();
87 if (ret->lock == NULL) {
88 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
93 if (cert->dh_tmp != NULL) {
94 ret->dh_tmp = cert->dh_tmp;
95 EVP_PKEY_up_ref(ret->dh_tmp);
97 ret->dh_tmp_cb = cert->dh_tmp_cb;
98 ret->dh_tmp_auto = cert->dh_tmp_auto;
101 for (i = 0; i < SSL_PKEY_NUM; i++) {
102 CERT_PKEY *cpk = cert->pkeys + i;
103 CERT_PKEY *rpk = ret->pkeys + i;
104 if (cpk->x509 != NULL) {
105 rpk->x509 = cpk->x509;
106 X509_up_ref(rpk->x509);
109 if (cpk->privatekey != NULL) {
110 rpk->privatekey = cpk->privatekey;
111 EVP_PKEY_up_ref(cpk->privatekey);
115 rpk->chain = X509_chain_up_ref(cpk->chain);
117 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
121 if (cert->pkeys[i].serverinfo != NULL) {
122 /* Just copy everything. */
123 ret->pkeys[i].serverinfo =
124 OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
125 if (ret->pkeys[i].serverinfo == NULL) {
126 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
129 ret->pkeys[i].serverinfo_length = cert->pkeys[i].serverinfo_length;
130 memcpy(ret->pkeys[i].serverinfo,
131 cert->pkeys[i].serverinfo, cert->pkeys[i].serverinfo_length);
135 /* Configured sigalgs copied across */
136 if (cert->conf_sigalgs) {
137 ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen
138 * sizeof(*cert->conf_sigalgs));
139 if (ret->conf_sigalgs == NULL)
141 memcpy(ret->conf_sigalgs, cert->conf_sigalgs,
142 cert->conf_sigalgslen * sizeof(*cert->conf_sigalgs));
143 ret->conf_sigalgslen = cert->conf_sigalgslen;
145 ret->conf_sigalgs = NULL;
147 if (cert->client_sigalgs) {
148 ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen
149 * sizeof(*cert->client_sigalgs));
150 if (ret->client_sigalgs == NULL)
152 memcpy(ret->client_sigalgs, cert->client_sigalgs,
153 cert->client_sigalgslen * sizeof(*cert->client_sigalgs));
154 ret->client_sigalgslen = cert->client_sigalgslen;
156 ret->client_sigalgs = NULL;
157 /* Copy any custom client certificate types */
159 ret->ctype = OPENSSL_memdup(cert->ctype, cert->ctype_len);
160 if (ret->ctype == NULL)
162 ret->ctype_len = cert->ctype_len;
165 ret->cert_flags = cert->cert_flags;
167 ret->cert_cb = cert->cert_cb;
168 ret->cert_cb_arg = cert->cert_cb_arg;
170 if (cert->verify_store) {
171 X509_STORE_up_ref(cert->verify_store);
172 ret->verify_store = cert->verify_store;
175 if (cert->chain_store) {
176 X509_STORE_up_ref(cert->chain_store);
177 ret->chain_store = cert->chain_store;
180 ret->sec_cb = cert->sec_cb;
181 ret->sec_level = cert->sec_level;
182 ret->sec_ex = cert->sec_ex;
184 if (!custom_exts_copy(&ret->custext, &cert->custext))
186 #ifndef OPENSSL_NO_PSK
187 if (cert->psk_identity_hint) {
188 ret->psk_identity_hint = OPENSSL_strdup(cert->psk_identity_hint);
189 if (ret->psk_identity_hint == NULL)
201 /* Free up and clear all certificates and chains */
203 void ssl_cert_clear_certs(CERT *c)
208 for (i = 0; i < SSL_PKEY_NUM; i++) {
209 CERT_PKEY *cpk = c->pkeys + i;
210 X509_free(cpk->x509);
212 EVP_PKEY_free(cpk->privatekey);
213 cpk->privatekey = NULL;
214 sk_X509_pop_free(cpk->chain, X509_free);
216 OPENSSL_free(cpk->serverinfo);
217 cpk->serverinfo = NULL;
218 cpk->serverinfo_length = 0;
222 void ssl_cert_free(CERT *c)
228 CRYPTO_DOWN_REF(&c->references, &i, c->lock);
229 REF_PRINT_COUNT("CERT", c);
232 REF_ASSERT_ISNT(i < 0);
234 #ifndef OPENSSL_NO_DH
235 EVP_PKEY_free(c->dh_tmp);
238 ssl_cert_clear_certs(c);
239 OPENSSL_free(c->conf_sigalgs);
240 OPENSSL_free(c->client_sigalgs);
241 OPENSSL_free(c->ctype);
242 X509_STORE_free(c->verify_store);
243 X509_STORE_free(c->chain_store);
244 custom_exts_free(&c->custext);
245 #ifndef OPENSSL_NO_PSK
246 OPENSSL_free(c->psk_identity_hint);
248 CRYPTO_THREAD_lock_free(c->lock);
252 int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
255 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
258 for (i = 0; i < sk_X509_num(chain); i++) {
259 r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0);
261 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r);
265 sk_X509_pop_free(cpk->chain, X509_free);
270 int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
272 STACK_OF(X509) *dchain;
274 return ssl_cert_set0_chain(s, ctx, NULL);
275 dchain = X509_chain_up_ref(chain);
278 if (!ssl_cert_set0_chain(s, ctx, dchain)) {
279 sk_X509_pop_free(dchain, X509_free);
285 int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
288 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
291 r = ssl_security_cert(s, ctx, x, 0, 0);
293 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r);
297 cpk->chain = sk_X509_new_null();
298 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
303 int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
305 if (!ssl_cert_add0_chain_cert(s, ctx, x))
311 int ssl_cert_select_current(CERT *c, X509 *x)
316 for (i = 0; i < SSL_PKEY_NUM; i++) {
317 CERT_PKEY *cpk = c->pkeys + i;
318 if (cpk->x509 == x && cpk->privatekey) {
324 for (i = 0; i < SSL_PKEY_NUM; i++) {
325 CERT_PKEY *cpk = c->pkeys + i;
326 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
334 int ssl_cert_set_current(CERT *c, long op)
339 if (op == SSL_CERT_SET_FIRST)
341 else if (op == SSL_CERT_SET_NEXT) {
342 idx = (int)(c->key - c->pkeys + 1);
343 if (idx >= SSL_PKEY_NUM)
347 for (i = idx; i < SSL_PKEY_NUM; i++) {
348 CERT_PKEY *cpk = c->pkeys + i;
349 if (cpk->x509 && cpk->privatekey) {
357 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
360 c->cert_cb_arg = arg;
363 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
367 X509_STORE *verify_store;
368 X509_STORE_CTX *ctx = NULL;
369 X509_VERIFY_PARAM *param;
371 if ((sk == NULL) || (sk_X509_num(sk) == 0))
374 if (s->cert->verify_store)
375 verify_store = s->cert->verify_store;
377 verify_store = s->ctx->cert_store;
379 ctx = X509_STORE_CTX_new();
381 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
385 x = sk_X509_value(sk, 0);
386 if (!X509_STORE_CTX_init(ctx, verify_store, x, sk)) {
387 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
390 param = X509_STORE_CTX_get0_param(ctx);
392 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
393 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
394 * and PKI authentication.
396 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s));
398 /* Set suite B flags if needed */
399 X509_STORE_CTX_set_flags(ctx, tls1_suiteb(s));
400 if (!X509_STORE_CTX_set_ex_data
401 (ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s)) {
405 /* Verify via DANE if enabled */
406 if (DANETLS_ENABLED(&s->dane))
407 X509_STORE_CTX_set0_dane(ctx, &s->dane);
410 * We need to inherit the verify parameters. These can be determined by
411 * the context: if its a server it will verify SSL client certificates or
415 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server");
417 * Anything non-default in "s->param" should overwrite anything in the ctx.
419 X509_VERIFY_PARAM_set1(param, s->param);
421 if (s->verify_callback)
422 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback);
424 if (s->ctx->app_verify_callback != NULL)
425 i = s->ctx->app_verify_callback(ctx, s->ctx->app_verify_arg);
427 i = X509_verify_cert(ctx);
429 s->verify_result = X509_STORE_CTX_get_error(ctx);
430 sk_X509_pop_free(s->verified_chain, X509_free);
431 s->verified_chain = NULL;
432 if (X509_STORE_CTX_get0_chain(ctx) != NULL) {
433 s->verified_chain = X509_STORE_CTX_get1_chain(ctx);
434 if (s->verified_chain == NULL) {
435 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
440 /* Move peername from the store context params to the SSL handle's */
441 X509_VERIFY_PARAM_move_peername(s->param, param);
444 X509_STORE_CTX_free(ctx);
448 static void set0_CA_list(STACK_OF(X509_NAME) **ca_list,
449 STACK_OF(X509_NAME) *name_list)
451 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
452 *ca_list = name_list;
455 STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk)
458 const int num = sk_X509_NAME_num(sk);
459 STACK_OF(X509_NAME) *ret;
462 ret = sk_X509_NAME_new_reserve(NULL, num);
464 SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
467 for (i = 0; i < num; i++) {
468 name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
470 SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
471 sk_X509_NAME_pop_free(ret, X509_NAME_free);
474 sk_X509_NAME_push(ret, name); /* Cannot fail after reserve call */
479 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
481 set0_CA_list(&s->ca_names, name_list);
484 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
486 set0_CA_list(&ctx->ca_names, name_list);
489 const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx)
491 return ctx->ca_names;
494 const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s)
496 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
499 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
501 set0_CA_list(&ctx->client_ca_names, name_list);
504 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
506 return ctx->client_ca_names;
509 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
511 set0_CA_list(&s->client_ca_names, name_list);
514 const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s)
516 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
519 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
522 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
523 return s->client_ca_names != NULL ? s->client_ca_names
524 : s->ctx->client_ca_names;
527 static int add_ca_name(STACK_OF(X509_NAME) **sk, const X509 *x)
533 if (*sk == NULL && ((*sk = sk_X509_NAME_new_null()) == NULL))
536 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
539 if (!sk_X509_NAME_push(*sk, name)) {
540 X509_NAME_free(name);
546 int SSL_add1_to_CA_list(SSL *ssl, const X509 *x)
548 return add_ca_name(&ssl->ca_names, x);
551 int SSL_CTX_add1_to_CA_list(SSL_CTX *ctx, const X509 *x)
553 return add_ca_name(&ctx->ca_names, x);
557 * The following two are older names are to be replaced with
558 * SSL(_CTX)_add1_to_CA_list
560 int SSL_add_client_CA(SSL *ssl, X509 *x)
562 return add_ca_name(&ssl->client_ca_names, x);
565 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
567 return add_ca_name(&ctx->client_ca_names, x);
570 static int xname_cmp(const X509_NAME *a, const X509_NAME *b)
572 unsigned char *abuf = NULL, *bbuf = NULL;
575 /* X509_NAME_cmp() itself casts away constness in this way, so
578 alen = i2d_X509_NAME((X509_NAME *)a, &abuf);
579 blen = i2d_X509_NAME((X509_NAME *)b, &bbuf);
581 if (alen < 0 || blen < 0)
583 else if (alen != blen)
585 else /* alen == blen */
586 ret = memcmp(abuf, bbuf, alen);
594 static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
596 return xname_cmp(*a, *b);
599 static unsigned long xname_hash(const X509_NAME *a)
601 return X509_NAME_hash((X509_NAME *)a);
604 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
606 BIO *in = BIO_new(BIO_s_file());
608 X509_NAME *xn = NULL;
609 STACK_OF(X509_NAME) *ret = NULL;
610 LHASH_OF(X509_NAME) *name_hash = lh_X509_NAME_new(xname_hash, xname_cmp);
612 if ((name_hash == NULL) || (in == NULL)) {
613 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
617 if (!BIO_read_filename(in, file))
621 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
624 ret = sk_X509_NAME_new_null();
626 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
630 if ((xn = X509_get_subject_name(x)) == NULL)
632 /* check for duplicates */
633 xn = X509_NAME_dup(xn);
636 if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) {
641 lh_X509_NAME_insert(name_hash, xn);
642 if (!sk_X509_NAME_push(ret, xn))
650 sk_X509_NAME_pop_free(ret, X509_NAME_free);
655 lh_X509_NAME_free(name_hash);
661 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
666 X509_NAME *xn = NULL;
668 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
670 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
672 in = BIO_new(BIO_s_file());
675 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, ERR_R_MALLOC_FAILURE);
679 if (!BIO_read_filename(in, file))
683 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
685 if ((xn = X509_get_subject_name(x)) == NULL)
687 xn = X509_NAME_dup(xn);
690 if (sk_X509_NAME_find(stack, xn) >= 0) {
693 } else if (!sk_X509_NAME_push(stack, xn)) {
707 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
711 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
714 OPENSSL_DIR_CTX *d = NULL;
715 const char *filename;
718 /* Note that a side effect is that the CAs will be sorted by name */
720 while ((filename = OPENSSL_DIR_read(&d, dir))) {
724 if (strlen(dir) + strlen(filename) + 2 > sizeof(buf)) {
725 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
726 SSL_R_PATH_TOO_LONG);
729 #ifdef OPENSSL_SYS_VMS
730 r = BIO_snprintf(buf, sizeof(buf), "%s%s", dir, filename);
732 r = BIO_snprintf(buf, sizeof(buf), "%s/%s", dir, filename);
734 if (r <= 0 || r >= (int)sizeof(buf))
736 if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
741 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
742 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
743 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
756 /* Build a certificate chain for current certificate */
757 int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags)
759 CERT *c = s ? s->cert : ctx->cert;
760 CERT_PKEY *cpk = c->key;
761 X509_STORE *chain_store = NULL;
762 X509_STORE_CTX *xs_ctx = NULL;
763 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
768 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
771 /* Rearranging and check the chain: add everything to a store */
772 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
773 chain_store = X509_STORE_new();
774 if (chain_store == NULL)
776 for (i = 0; i < sk_X509_num(cpk->chain); i++) {
777 x = sk_X509_value(cpk->chain, i);
778 if (!X509_STORE_add_cert(chain_store, x))
781 /* Add EE cert too: it might be self signed */
782 if (!X509_STORE_add_cert(chain_store, cpk->x509))
786 chain_store = c->chain_store;
788 chain_store = s->ctx->cert_store;
790 chain_store = ctx->cert_store;
792 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
793 untrusted = cpk->chain;
796 xs_ctx = X509_STORE_CTX_new();
797 if (xs_ctx == NULL) {
798 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
801 if (!X509_STORE_CTX_init(xs_ctx, chain_store, cpk->x509, untrusted)) {
802 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
805 /* Set suite B flags if needed */
806 X509_STORE_CTX_set_flags(xs_ctx,
807 c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
809 i = X509_verify_cert(xs_ctx);
810 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
811 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
817 chain = X509_STORE_CTX_get1_chain(xs_ctx);
819 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
820 i = X509_STORE_CTX_get_error(xs_ctx);
821 ERR_add_error_data(2, "Verify error:",
822 X509_verify_cert_error_string(i));
826 /* Remove EE certificate from chain */
827 x = sk_X509_shift(chain);
829 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
830 if (sk_X509_num(chain) > 0) {
831 /* See if last cert is self signed */
832 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
833 if (X509_get_extension_flags(x) & EXFLAG_SS) {
834 x = sk_X509_pop(chain);
840 * Check security level of all CA certificates: EE will have been checked
843 for (i = 0; i < sk_X509_num(chain); i++) {
844 x = sk_X509_value(chain, i);
845 rv = ssl_security_cert(s, ctx, x, 0, 0);
847 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv);
848 sk_X509_pop_free(chain, X509_free);
853 sk_X509_pop_free(cpk->chain, X509_free);
858 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
859 X509_STORE_free(chain_store);
860 X509_STORE_CTX_free(xs_ctx);
865 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
869 pstore = &c->chain_store;
871 pstore = &c->verify_store;
872 X509_STORE_free(*pstore);
875 X509_STORE_up_ref(store);
879 int ssl_cert_get_cert_store(CERT *c, X509_STORE **pstore, int chain)
881 *pstore = (chain ? c->chain_store : c->verify_store);
885 int ssl_get_security_level_bits(const SSL *s, const SSL_CTX *ctx, int *levelp)
888 static const int minbits_table[5 + 1] = { 0, 80, 112, 128, 192, 256 };
891 level = SSL_CTX_get_security_level(ctx);
893 level = SSL_get_security_level(s);
903 return minbits_table[level];
906 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
907 int op, int bits, int nid, void *other,
910 int level, minbits, pfs_mask;
912 minbits = ssl_get_security_level_bits(s, ctx, &level);
916 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
919 if (op == SSL_SECOP_TMP_DH && bits < 80)
924 case SSL_SECOP_CIPHER_SUPPORTED:
925 case SSL_SECOP_CIPHER_SHARED:
926 case SSL_SECOP_CIPHER_CHECK:
928 const SSL_CIPHER *c = other;
929 /* No ciphers below security level */
932 /* No unauthenticated ciphersuites */
933 if (c->algorithm_auth & SSL_aNULL)
935 /* No MD5 mac ciphersuites */
936 if (c->algorithm_mac & SSL_MD5)
938 /* SHA1 HMAC is 160 bits of security */
939 if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
941 /* Level 2: no RC4 */
942 if (level >= 2 && c->algorithm_enc == SSL_RC4)
944 /* Level 3: forward secure ciphersuites only */
945 pfs_mask = SSL_kDHE | SSL_kECDHE | SSL_kDHEPSK | SSL_kECDHEPSK;
946 if (level >= 3 && c->min_tls != TLS1_3_VERSION &&
947 !(c->algorithm_mkey & pfs_mask))
951 case SSL_SECOP_VERSION:
952 if (!SSL_IS_DTLS(s)) {
953 /* SSLv3 not allowed at level 2 */
954 if (nid <= SSL3_VERSION && level >= 2)
956 /* TLS v1.1 and above only for level 3 */
957 if (nid <= TLS1_VERSION && level >= 3)
959 /* TLS v1.2 only for level 4 and above */
960 if (nid <= TLS1_1_VERSION && level >= 4)
963 /* DTLS v1.2 only for level 4 and above */
964 if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level >= 4)
969 case SSL_SECOP_COMPRESSION:
973 case SSL_SECOP_TICKET:
984 int ssl_security(const SSL *s, int op, int bits, int nid, void *other)
986 return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex);
989 int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other)
991 return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other,
995 int ssl_cert_lookup_by_nid(int nid, size_t *pidx)
999 for (i = 0; i < OSSL_NELEM(ssl_cert_info); i++) {
1000 if (ssl_cert_info[i].nid == nid) {
1009 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, size_t *pidx)
1011 int nid = EVP_PKEY_id(pk);
1014 if (nid == NID_undef)
1017 if (!ssl_cert_lookup_by_nid(nid, &tmpidx))
1023 return &ssl_cert_info[tmpidx];
1026 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx)
1028 if (idx >= OSSL_NELEM(ssl_cert_info))
1030 return &ssl_cert_info[idx];