2 * Copyright 1995-2017 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
14 #ifndef NO_SYS_TYPES_H
15 # include <sys/types.h>
18 #include "internal/o_dir.h"
19 #include <openssl/lhash.h>
20 #include <openssl/bio.h>
21 #include <openssl/pem.h>
22 #include <openssl/x509v3.h>
23 #include <openssl/dh.h>
24 #include <openssl/bn.h>
25 #include <openssl/crypto.h>
27 #include "ssl_cert_table.h"
28 #include "internal/thread_once.h"
30 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
31 int op, int bits, int nid, void *other,
34 static CRYPTO_ONCE ssl_x509_store_ctx_once = CRYPTO_ONCE_STATIC_INIT;
35 static volatile int ssl_x509_store_ctx_idx = -1;
37 DEFINE_RUN_ONCE_STATIC(ssl_x509_store_ctx_init)
39 ssl_x509_store_ctx_idx = X509_STORE_CTX_get_ex_new_index(0,
40 "SSL for verify callback",
42 return ssl_x509_store_ctx_idx >= 0;
45 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
48 if (!RUN_ONCE(&ssl_x509_store_ctx_once, ssl_x509_store_ctx_init))
50 return ssl_x509_store_ctx_idx;
53 CERT *ssl_cert_new(void)
55 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
58 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
62 ret->key = &(ret->pkeys[SSL_PKEY_RSA]);
64 ret->sec_cb = ssl_security_default_callback;
65 ret->sec_level = OPENSSL_TLS_SECURITY_LEVEL;
67 ret->lock = CRYPTO_THREAD_lock_new();
68 if (ret->lock == NULL) {
69 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
77 CERT *ssl_cert_dup(CERT *cert)
79 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
83 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
88 ret->key = &ret->pkeys[cert->key - cert->pkeys];
89 ret->lock = CRYPTO_THREAD_lock_new();
90 if (ret->lock == NULL) {
91 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
96 if (cert->dh_tmp != NULL) {
97 ret->dh_tmp = cert->dh_tmp;
98 EVP_PKEY_up_ref(ret->dh_tmp);
100 ret->dh_tmp_cb = cert->dh_tmp_cb;
101 ret->dh_tmp_auto = cert->dh_tmp_auto;
104 for (i = 0; i < SSL_PKEY_NUM; i++) {
105 CERT_PKEY *cpk = cert->pkeys + i;
106 CERT_PKEY *rpk = ret->pkeys + i;
107 if (cpk->x509 != NULL) {
108 rpk->x509 = cpk->x509;
109 X509_up_ref(rpk->x509);
112 if (cpk->privatekey != NULL) {
113 rpk->privatekey = cpk->privatekey;
114 EVP_PKEY_up_ref(cpk->privatekey);
118 rpk->chain = X509_chain_up_ref(cpk->chain);
120 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
124 if (cert->pkeys[i].serverinfo != NULL) {
125 /* Just copy everything. */
126 ret->pkeys[i].serverinfo =
127 OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
128 if (ret->pkeys[i].serverinfo == NULL) {
129 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
132 ret->pkeys[i].serverinfo_length = cert->pkeys[i].serverinfo_length;
133 memcpy(ret->pkeys[i].serverinfo,
134 cert->pkeys[i].serverinfo, cert->pkeys[i].serverinfo_length);
138 /* Configured sigalgs copied across */
139 if (cert->conf_sigalgs) {
140 ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen
141 * sizeof(*cert->conf_sigalgs));
142 if (ret->conf_sigalgs == NULL)
144 memcpy(ret->conf_sigalgs, cert->conf_sigalgs,
145 cert->conf_sigalgslen * sizeof(*cert->conf_sigalgs));
146 ret->conf_sigalgslen = cert->conf_sigalgslen;
148 ret->conf_sigalgs = NULL;
150 if (cert->client_sigalgs) {
151 ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen
152 * sizeof(*cert->client_sigalgs));
153 if (ret->client_sigalgs == NULL)
155 memcpy(ret->client_sigalgs, cert->client_sigalgs,
156 cert->client_sigalgslen * sizeof(*cert->client_sigalgs));
157 ret->client_sigalgslen = cert->client_sigalgslen;
159 ret->client_sigalgs = NULL;
160 /* Shared sigalgs also NULL */
161 ret->shared_sigalgs = NULL;
162 /* Copy any custom client certificate types */
164 ret->ctype = OPENSSL_memdup(cert->ctype, cert->ctype_len);
165 if (ret->ctype == NULL)
167 ret->ctype_len = cert->ctype_len;
170 ret->cert_flags = cert->cert_flags;
172 ret->cert_cb = cert->cert_cb;
173 ret->cert_cb_arg = cert->cert_cb_arg;
175 if (cert->verify_store) {
176 X509_STORE_up_ref(cert->verify_store);
177 ret->verify_store = cert->verify_store;
180 if (cert->chain_store) {
181 X509_STORE_up_ref(cert->chain_store);
182 ret->chain_store = cert->chain_store;
185 ret->sec_cb = cert->sec_cb;
186 ret->sec_level = cert->sec_level;
187 ret->sec_ex = cert->sec_ex;
189 if (!custom_exts_copy(&ret->custext, &cert->custext))
191 #ifndef OPENSSL_NO_PSK
192 if (cert->psk_identity_hint) {
193 ret->psk_identity_hint = OPENSSL_strdup(cert->psk_identity_hint);
194 if (ret->psk_identity_hint == NULL)
206 /* Free up and clear all certificates and chains */
208 void ssl_cert_clear_certs(CERT *c)
213 for (i = 0; i < SSL_PKEY_NUM; i++) {
214 CERT_PKEY *cpk = c->pkeys + i;
215 X509_free(cpk->x509);
217 EVP_PKEY_free(cpk->privatekey);
218 cpk->privatekey = NULL;
219 sk_X509_pop_free(cpk->chain, X509_free);
221 OPENSSL_free(cpk->serverinfo);
222 cpk->serverinfo = NULL;
223 cpk->serverinfo_length = 0;
227 void ssl_cert_free(CERT *c)
234 CRYPTO_DOWN_REF(&c->references, &i, c->lock);
235 REF_PRINT_COUNT("CERT", c);
238 REF_ASSERT_ISNT(i < 0);
240 #ifndef OPENSSL_NO_DH
241 EVP_PKEY_free(c->dh_tmp);
244 ssl_cert_clear_certs(c);
245 OPENSSL_free(c->conf_sigalgs);
246 OPENSSL_free(c->client_sigalgs);
247 OPENSSL_free(c->shared_sigalgs);
248 OPENSSL_free(c->ctype);
249 X509_STORE_free(c->verify_store);
250 X509_STORE_free(c->chain_store);
251 custom_exts_free(&c->custext);
252 #ifndef OPENSSL_NO_PSK
253 OPENSSL_free(c->psk_identity_hint);
255 CRYPTO_THREAD_lock_free(c->lock);
259 int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
262 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
265 for (i = 0; i < sk_X509_num(chain); i++) {
266 r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0);
268 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r);
272 sk_X509_pop_free(cpk->chain, X509_free);
277 int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
279 STACK_OF(X509) *dchain;
281 return ssl_cert_set0_chain(s, ctx, NULL);
282 dchain = X509_chain_up_ref(chain);
285 if (!ssl_cert_set0_chain(s, ctx, dchain)) {
286 sk_X509_pop_free(dchain, X509_free);
292 int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
295 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
298 r = ssl_security_cert(s, ctx, x, 0, 0);
300 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r);
304 cpk->chain = sk_X509_new_null();
305 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
310 int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
312 if (!ssl_cert_add0_chain_cert(s, ctx, x))
318 int ssl_cert_select_current(CERT *c, X509 *x)
323 for (i = 0; i < SSL_PKEY_NUM; i++) {
324 CERT_PKEY *cpk = c->pkeys + i;
325 if (cpk->x509 == x && cpk->privatekey) {
331 for (i = 0; i < SSL_PKEY_NUM; i++) {
332 CERT_PKEY *cpk = c->pkeys + i;
333 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
341 int ssl_cert_set_current(CERT *c, long op)
346 if (op == SSL_CERT_SET_FIRST)
348 else if (op == SSL_CERT_SET_NEXT) {
349 idx = (int)(c->key - c->pkeys + 1);
350 if (idx >= SSL_PKEY_NUM)
354 for (i = idx; i < SSL_PKEY_NUM; i++) {
355 CERT_PKEY *cpk = c->pkeys + i;
356 if (cpk->x509 && cpk->privatekey) {
364 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
367 c->cert_cb_arg = arg;
370 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
374 X509_STORE *verify_store;
375 X509_STORE_CTX *ctx = NULL;
376 X509_VERIFY_PARAM *param;
378 if ((sk == NULL) || (sk_X509_num(sk) == 0))
381 if (s->cert->verify_store)
382 verify_store = s->cert->verify_store;
384 verify_store = s->ctx->cert_store;
386 ctx = X509_STORE_CTX_new();
388 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
392 x = sk_X509_value(sk, 0);
393 if (!X509_STORE_CTX_init(ctx, verify_store, x, sk)) {
394 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
397 param = X509_STORE_CTX_get0_param(ctx);
399 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
400 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
401 * and PKI authentication.
403 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s));
405 /* Set suite B flags if needed */
406 X509_STORE_CTX_set_flags(ctx, tls1_suiteb(s));
407 if (!X509_STORE_CTX_set_ex_data
408 (ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s)) {
412 /* Verify via DANE if enabled */
413 if (DANETLS_ENABLED(&s->dane))
414 X509_STORE_CTX_set0_dane(ctx, &s->dane);
417 * We need to inherit the verify parameters. These can be determined by
418 * the context: if its a server it will verify SSL client certificates or
422 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server");
424 * Anything non-default in "s->param" should overwrite anything in the ctx.
426 X509_VERIFY_PARAM_set1(param, s->param);
428 if (s->verify_callback)
429 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback);
431 if (s->ctx->app_verify_callback != NULL)
432 i = s->ctx->app_verify_callback(ctx, s->ctx->app_verify_arg);
434 i = X509_verify_cert(ctx);
436 s->verify_result = X509_STORE_CTX_get_error(ctx);
437 sk_X509_pop_free(s->verified_chain, X509_free);
438 s->verified_chain = NULL;
439 if (X509_STORE_CTX_get0_chain(ctx) != NULL) {
440 s->verified_chain = X509_STORE_CTX_get1_chain(ctx);
441 if (s->verified_chain == NULL) {
442 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
447 /* Move peername from the store context params to the SSL handle's */
448 X509_VERIFY_PARAM_move_peername(s->param, param);
451 X509_STORE_CTX_free(ctx);
455 static void set0_CA_list(STACK_OF(X509_NAME) **ca_list,
456 STACK_OF(X509_NAME) *name_list)
458 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
459 *ca_list = name_list;
462 STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk)
465 STACK_OF(X509_NAME) *ret;
468 ret = sk_X509_NAME_new_null();
470 SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
473 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
474 name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
475 if (name == NULL || !sk_X509_NAME_push(ret, name)) {
476 sk_X509_NAME_pop_free(ret, X509_NAME_free);
477 X509_NAME_free(name);
484 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
486 set0_CA_list(&s->ca_names, name_list);
489 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
491 set0_CA_list(&ctx->ca_names, name_list);
494 const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx)
496 return ctx->ca_names;
499 const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s)
501 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
504 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
506 SSL_CTX_set0_CA_list(ctx, name_list);
509 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
511 return ctx->ca_names;
514 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
516 SSL_set0_CA_list(s, name_list);
519 const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s)
521 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
524 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
527 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
528 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
531 static int add_ca_name(STACK_OF(X509_NAME) **sk, const X509 *x)
537 if (*sk == NULL && ((*sk = sk_X509_NAME_new_null()) == NULL))
540 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
543 if (!sk_X509_NAME_push(*sk, name)) {
544 X509_NAME_free(name);
550 int SSL_add1_CA_list(SSL *ssl, const X509 *x)
552 return add_ca_name(&ssl->ca_names, x);
555 int SSL_CTX_add1_CA_list(SSL_CTX *ctx, const X509 *x)
557 return add_ca_name(&ctx->ca_names, x);
560 int SSL_add_client_CA(SSL *ssl, X509 *x)
562 return add_ca_name(&ssl->ca_names, x);
565 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
567 return add_ca_name(&ctx->ca_names, x);
570 static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
572 return (X509_NAME_cmp(*a, *b));
575 static int xname_cmp(const X509_NAME *a, const X509_NAME *b)
577 return X509_NAME_cmp(a, b);
580 static unsigned long xname_hash(const X509_NAME *a)
582 return X509_NAME_hash((X509_NAME *)a);
586 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
587 * it doesn't really have anything to do with clients (except that a common use
588 * for a stack of CAs is to send it to the client). Actually, it doesn't have
589 * much to do with CAs, either, since it will load any old cert.
590 * \param file the file containing one or more certs.
591 * \return a ::STACK containing the certs.
593 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
595 BIO *in = BIO_new(BIO_s_file());
597 X509_NAME *xn = NULL;
598 STACK_OF(X509_NAME) *ret = NULL;
599 LHASH_OF(X509_NAME) *name_hash = lh_X509_NAME_new(xname_hash, xname_cmp);
601 if ((name_hash == NULL) || (in == NULL)) {
602 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
606 if (!BIO_read_filename(in, file))
610 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
613 ret = sk_X509_NAME_new_null();
615 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
619 if ((xn = X509_get_subject_name(x)) == NULL)
621 /* check for duplicates */
622 xn = X509_NAME_dup(xn);
625 if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) {
630 lh_X509_NAME_insert(name_hash, xn);
631 if (!sk_X509_NAME_push(ret, xn))
639 sk_X509_NAME_pop_free(ret, X509_NAME_free);
644 lh_X509_NAME_free(name_hash);
651 * Add a file of certs to a stack.
652 * \param stack the stack to add to.
653 * \param file the file to add from. All certs in this file that are not
654 * already in the stack will be added.
655 * \return 1 for success, 0 for failure. Note that in the case of failure some
656 * certs may have been added to \c stack.
659 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
664 X509_NAME *xn = NULL;
666 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
668 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
670 in = BIO_new(BIO_s_file());
673 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, ERR_R_MALLOC_FAILURE);
677 if (!BIO_read_filename(in, file))
681 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
683 if ((xn = X509_get_subject_name(x)) == NULL)
685 xn = X509_NAME_dup(xn);
688 if (sk_X509_NAME_find(stack, xn) >= 0) {
691 } else if (!sk_X509_NAME_push(stack, xn)) {
705 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
710 * Add a directory of certs to a stack.
711 * \param stack the stack to append to.
712 * \param dir the directory to append from. All files in this directory will be
713 * examined as potential certs. Any that are acceptable to
714 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
716 * \return 1 for success, 0 for failure. Note that in the case of failure some
717 * certs may have been added to \c stack.
720 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
723 OPENSSL_DIR_CTX *d = NULL;
724 const char *filename;
727 /* Note that a side effect is that the CAs will be sorted by name */
729 while ((filename = OPENSSL_DIR_read(&d, dir))) {
733 if (strlen(dir) + strlen(filename) + 2 > sizeof buf) {
734 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
735 SSL_R_PATH_TOO_LONG);
738 #ifdef OPENSSL_SYS_VMS
739 r = BIO_snprintf(buf, sizeof buf, "%s%s", dir, filename);
741 r = BIO_snprintf(buf, sizeof buf, "%s/%s", dir, filename);
743 if (r <= 0 || r >= (int)sizeof(buf))
745 if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
750 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
751 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
752 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
765 /* Build a certificate chain for current certificate */
766 int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags)
768 CERT *c = s ? s->cert : ctx->cert;
769 CERT_PKEY *cpk = c->key;
770 X509_STORE *chain_store = NULL;
771 X509_STORE_CTX *xs_ctx = NULL;
772 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
777 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
780 /* Rearranging and check the chain: add everything to a store */
781 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
782 chain_store = X509_STORE_new();
783 if (chain_store == NULL)
785 for (i = 0; i < sk_X509_num(cpk->chain); i++) {
786 x = sk_X509_value(cpk->chain, i);
787 if (!X509_STORE_add_cert(chain_store, x))
790 /* Add EE cert too: it might be self signed */
791 if (!X509_STORE_add_cert(chain_store, cpk->x509))
795 chain_store = c->chain_store;
797 chain_store = s->ctx->cert_store;
799 chain_store = ctx->cert_store;
801 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
802 untrusted = cpk->chain;
805 xs_ctx = X509_STORE_CTX_new();
806 if (xs_ctx == NULL) {
807 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
810 if (!X509_STORE_CTX_init(xs_ctx, chain_store, cpk->x509, untrusted)) {
811 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
814 /* Set suite B flags if needed */
815 X509_STORE_CTX_set_flags(xs_ctx,
816 c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
818 i = X509_verify_cert(xs_ctx);
819 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
820 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
826 chain = X509_STORE_CTX_get1_chain(xs_ctx);
828 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
829 i = X509_STORE_CTX_get_error(xs_ctx);
830 ERR_add_error_data(2, "Verify error:",
831 X509_verify_cert_error_string(i));
835 /* Remove EE certificate from chain */
836 x = sk_X509_shift(chain);
838 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
839 if (sk_X509_num(chain) > 0) {
840 /* See if last cert is self signed */
841 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
842 if (X509_get_extension_flags(x) & EXFLAG_SS) {
843 x = sk_X509_pop(chain);
849 * Check security level of all CA certificates: EE will have been checked
852 for (i = 0; i < sk_X509_num(chain); i++) {
853 x = sk_X509_value(chain, i);
854 rv = ssl_security_cert(s, ctx, x, 0, 0);
856 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv);
857 sk_X509_pop_free(chain, X509_free);
862 sk_X509_pop_free(cpk->chain, X509_free);
867 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
868 X509_STORE_free(chain_store);
869 X509_STORE_CTX_free(xs_ctx);
874 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
878 pstore = &c->chain_store;
880 pstore = &c->verify_store;
881 X509_STORE_free(*pstore);
884 X509_STORE_up_ref(store);
888 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
889 int op, int bits, int nid, void *other,
893 static const int minbits_table[5] = { 80, 112, 128, 192, 256 };
895 level = SSL_CTX_get_security_level(ctx);
897 level = SSL_get_security_level(s);
901 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
904 if (op == SSL_SECOP_TMP_DH && bits < 80)
910 minbits = minbits_table[level - 1];
912 case SSL_SECOP_CIPHER_SUPPORTED:
913 case SSL_SECOP_CIPHER_SHARED:
914 case SSL_SECOP_CIPHER_CHECK:
916 const SSL_CIPHER *c = other;
917 /* No ciphers below security level */
920 /* No unauthenticated ciphersuites */
921 if (c->algorithm_auth & SSL_aNULL)
923 /* No MD5 mac ciphersuites */
924 if (c->algorithm_mac & SSL_MD5)
926 /* SHA1 HMAC is 160 bits of security */
927 if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
929 /* Level 2: no RC4 */
930 if (level >= 2 && c->algorithm_enc == SSL_RC4)
932 /* Level 3: forward secure ciphersuites only */
933 if (level >= 3 && !(c->algorithm_mkey & (SSL_kEDH | SSL_kEECDH)))
937 case SSL_SECOP_VERSION:
938 if (!SSL_IS_DTLS(s)) {
939 /* SSLv3 not allowed at level 2 */
940 if (nid <= SSL3_VERSION && level >= 2)
942 /* TLS v1.1 and above only for level 3 */
943 if (nid <= TLS1_VERSION && level >= 3)
945 /* TLS v1.2 only for level 4 and above */
946 if (nid <= TLS1_1_VERSION && level >= 4)
949 /* DTLS v1.2 only for level 4 and above */
950 if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level >= 4)
955 case SSL_SECOP_COMPRESSION:
959 case SSL_SECOP_TICKET:
970 int ssl_security(const SSL *s, int op, int bits, int nid, void *other)
972 return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex);
975 int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other)
977 return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other,
981 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, size_t *pidx)
983 int nid = EVP_PKEY_id(pk);
986 if (nid == NID_undef)
989 for (i = 0; i < OSSL_NELEM(ssl_cert_info); i++) {
990 if (ssl_cert_info[i].nid == nid) {
993 return &ssl_cert_info[i];
999 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx)
1001 if (idx >= OSSL_NELEM(ssl_cert_info))
1003 return &ssl_cert_info[idx];