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
12 #include <sys/types.h>
15 #include "internal/o_dir.h"
16 #include <openssl/lhash.h>
17 #include <openssl/bio.h>
18 #include <openssl/pem.h>
19 #include <openssl/x509v3.h>
20 #include <openssl/dh.h>
21 #include <openssl/bn.h>
22 #include <openssl/crypto.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 /* Shared sigalgs also NULL */
158 ret->shared_sigalgs = NULL;
159 /* Copy any custom client certificate types */
161 ret->ctype = OPENSSL_memdup(cert->ctype, cert->ctype_len);
162 if (ret->ctype == NULL)
164 ret->ctype_len = cert->ctype_len;
167 ret->cert_flags = cert->cert_flags;
169 ret->cert_cb = cert->cert_cb;
170 ret->cert_cb_arg = cert->cert_cb_arg;
172 if (cert->verify_store) {
173 X509_STORE_up_ref(cert->verify_store);
174 ret->verify_store = cert->verify_store;
177 if (cert->chain_store) {
178 X509_STORE_up_ref(cert->chain_store);
179 ret->chain_store = cert->chain_store;
182 ret->sec_cb = cert->sec_cb;
183 ret->sec_level = cert->sec_level;
184 ret->sec_ex = cert->sec_ex;
186 if (!custom_exts_copy(&ret->custext, &cert->custext))
188 #ifndef OPENSSL_NO_PSK
189 if (cert->psk_identity_hint) {
190 ret->psk_identity_hint = OPENSSL_strdup(cert->psk_identity_hint);
191 if (ret->psk_identity_hint == NULL)
203 /* Free up and clear all certificates and chains */
205 void ssl_cert_clear_certs(CERT *c)
210 for (i = 0; i < SSL_PKEY_NUM; i++) {
211 CERT_PKEY *cpk = c->pkeys + i;
212 X509_free(cpk->x509);
214 EVP_PKEY_free(cpk->privatekey);
215 cpk->privatekey = NULL;
216 sk_X509_pop_free(cpk->chain, X509_free);
218 OPENSSL_free(cpk->serverinfo);
219 cpk->serverinfo = NULL;
220 cpk->serverinfo_length = 0;
224 void ssl_cert_free(CERT *c)
231 CRYPTO_DOWN_REF(&c->references, &i, c->lock);
232 REF_PRINT_COUNT("CERT", c);
235 REF_ASSERT_ISNT(i < 0);
237 #ifndef OPENSSL_NO_DH
238 EVP_PKEY_free(c->dh_tmp);
241 ssl_cert_clear_certs(c);
242 OPENSSL_free(c->conf_sigalgs);
243 OPENSSL_free(c->client_sigalgs);
244 OPENSSL_free(c->shared_sigalgs);
245 OPENSSL_free(c->ctype);
246 X509_STORE_free(c->verify_store);
247 X509_STORE_free(c->chain_store);
248 custom_exts_free(&c->custext);
249 #ifndef OPENSSL_NO_PSK
250 OPENSSL_free(c->psk_identity_hint);
252 CRYPTO_THREAD_lock_free(c->lock);
256 int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
259 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
262 for (i = 0; i < sk_X509_num(chain); i++) {
263 r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0);
265 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r);
269 sk_X509_pop_free(cpk->chain, X509_free);
274 int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
276 STACK_OF(X509) *dchain;
278 return ssl_cert_set0_chain(s, ctx, NULL);
279 dchain = X509_chain_up_ref(chain);
282 if (!ssl_cert_set0_chain(s, ctx, dchain)) {
283 sk_X509_pop_free(dchain, X509_free);
289 int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
292 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
295 r = ssl_security_cert(s, ctx, x, 0, 0);
297 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r);
301 cpk->chain = sk_X509_new_null();
302 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
307 int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
309 if (!ssl_cert_add0_chain_cert(s, ctx, x))
315 int ssl_cert_select_current(CERT *c, X509 *x)
320 for (i = 0; i < SSL_PKEY_NUM; i++) {
321 CERT_PKEY *cpk = c->pkeys + i;
322 if (cpk->x509 == x && cpk->privatekey) {
328 for (i = 0; i < SSL_PKEY_NUM; i++) {
329 CERT_PKEY *cpk = c->pkeys + i;
330 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
338 int ssl_cert_set_current(CERT *c, long op)
343 if (op == SSL_CERT_SET_FIRST)
345 else if (op == SSL_CERT_SET_NEXT) {
346 idx = (int)(c->key - c->pkeys + 1);
347 if (idx >= SSL_PKEY_NUM)
351 for (i = idx; i < SSL_PKEY_NUM; i++) {
352 CERT_PKEY *cpk = c->pkeys + i;
353 if (cpk->x509 && cpk->privatekey) {
361 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
364 c->cert_cb_arg = arg;
367 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
371 X509_STORE *verify_store;
372 X509_STORE_CTX *ctx = NULL;
373 X509_VERIFY_PARAM *param;
375 if ((sk == NULL) || (sk_X509_num(sk) == 0))
378 if (s->cert->verify_store)
379 verify_store = s->cert->verify_store;
381 verify_store = s->ctx->cert_store;
383 ctx = X509_STORE_CTX_new();
385 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
389 x = sk_X509_value(sk, 0);
390 if (!X509_STORE_CTX_init(ctx, verify_store, x, sk)) {
391 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
394 param = X509_STORE_CTX_get0_param(ctx);
396 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
397 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
398 * and PKI authentication.
400 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s));
402 /* Set suite B flags if needed */
403 X509_STORE_CTX_set_flags(ctx, tls1_suiteb(s));
404 if (!X509_STORE_CTX_set_ex_data
405 (ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s)) {
409 /* Verify via DANE if enabled */
410 if (DANETLS_ENABLED(&s->dane))
411 X509_STORE_CTX_set0_dane(ctx, &s->dane);
414 * We need to inherit the verify parameters. These can be determined by
415 * the context: if its a server it will verify SSL client certificates or
419 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server");
421 * Anything non-default in "s->param" should overwrite anything in the ctx.
423 X509_VERIFY_PARAM_set1(param, s->param);
425 if (s->verify_callback)
426 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback);
428 if (s->ctx->app_verify_callback != NULL)
429 i = s->ctx->app_verify_callback(ctx, s->ctx->app_verify_arg);
431 i = X509_verify_cert(ctx);
433 s->verify_result = X509_STORE_CTX_get_error(ctx);
434 sk_X509_pop_free(s->verified_chain, X509_free);
435 s->verified_chain = NULL;
436 if (X509_STORE_CTX_get0_chain(ctx) != NULL) {
437 s->verified_chain = X509_STORE_CTX_get1_chain(ctx);
438 if (s->verified_chain == NULL) {
439 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
444 /* Move peername from the store context params to the SSL handle's */
445 X509_VERIFY_PARAM_move_peername(s->param, param);
448 X509_STORE_CTX_free(ctx);
452 static void set0_CA_list(STACK_OF(X509_NAME) **ca_list,
453 STACK_OF(X509_NAME) *name_list)
455 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
456 *ca_list = name_list;
459 STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk)
462 STACK_OF(X509_NAME) *ret;
465 ret = sk_X509_NAME_new_null();
467 SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
470 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
471 name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
472 if (name == NULL || !sk_X509_NAME_push(ret, name)) {
473 sk_X509_NAME_pop_free(ret, X509_NAME_free);
474 X509_NAME_free(name);
481 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
483 set0_CA_list(&s->ca_names, name_list);
486 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
488 set0_CA_list(&ctx->ca_names, name_list);
491 const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx)
493 return ctx->ca_names;
496 const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s)
498 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
501 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
503 SSL_CTX_set0_CA_list(ctx, name_list);
506 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
508 return ctx->ca_names;
511 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
513 SSL_set0_CA_list(s, name_list);
516 const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s)
518 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
521 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
524 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
525 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
528 static int add_ca_name(STACK_OF(X509_NAME) **sk, const X509 *x)
534 if (*sk == NULL && ((*sk = sk_X509_NAME_new_null()) == NULL))
537 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
540 if (!sk_X509_NAME_push(*sk, name)) {
541 X509_NAME_free(name);
547 int SSL_add1_CA_list(SSL *ssl, const X509 *x)
549 return add_ca_name(&ssl->ca_names, x);
552 int SSL_CTX_add1_CA_list(SSL_CTX *ctx, const X509 *x)
554 return add_ca_name(&ctx->ca_names, x);
557 int SSL_add_client_CA(SSL *ssl, X509 *x)
559 return add_ca_name(&ssl->ca_names, x);
562 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
564 return add_ca_name(&ctx->ca_names, x);
567 static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
569 return (X509_NAME_cmp(*a, *b));
572 static int xname_cmp(const X509_NAME *a, const X509_NAME *b)
574 return X509_NAME_cmp(a, b);
577 static unsigned long xname_hash(const X509_NAME *a)
579 return X509_NAME_hash((X509_NAME *)a);
583 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
584 * it doesn't really have anything to do with clients (except that a common use
585 * for a stack of CAs is to send it to the client). Actually, it doesn't have
586 * much to do with CAs, either, since it will load any old cert.
587 * \param file the file containing one or more certs.
588 * \return a ::STACK containing the certs.
590 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
592 BIO *in = BIO_new(BIO_s_file());
594 X509_NAME *xn = NULL;
595 STACK_OF(X509_NAME) *ret = NULL;
596 LHASH_OF(X509_NAME) *name_hash = lh_X509_NAME_new(xname_hash, xname_cmp);
598 if ((name_hash == NULL) || (in == NULL)) {
599 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
603 if (!BIO_read_filename(in, file))
607 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
610 ret = sk_X509_NAME_new_null();
612 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
616 if ((xn = X509_get_subject_name(x)) == NULL)
618 /* check for duplicates */
619 xn = X509_NAME_dup(xn);
622 if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) {
627 lh_X509_NAME_insert(name_hash, xn);
628 if (!sk_X509_NAME_push(ret, xn))
636 sk_X509_NAME_pop_free(ret, X509_NAME_free);
641 lh_X509_NAME_free(name_hash);
648 * Add a file of certs to a stack.
649 * \param stack the stack to add to.
650 * \param file the file to add from. All certs in this file that are not
651 * already in the stack will be added.
652 * \return 1 for success, 0 for failure. Note that in the case of failure some
653 * certs may have been added to \c stack.
656 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
661 X509_NAME *xn = NULL;
663 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
665 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
667 in = BIO_new(BIO_s_file());
670 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, ERR_R_MALLOC_FAILURE);
674 if (!BIO_read_filename(in, file))
678 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
680 if ((xn = X509_get_subject_name(x)) == NULL)
682 xn = X509_NAME_dup(xn);
685 if (sk_X509_NAME_find(stack, xn) >= 0) {
688 } else if (!sk_X509_NAME_push(stack, xn)) {
702 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
707 * Add a directory of certs to a stack.
708 * \param stack the stack to append to.
709 * \param dir the directory to append from. All files in this directory will be
710 * examined as potential certs. Any that are acceptable to
711 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
713 * \return 1 for success, 0 for failure. Note that in the case of failure some
714 * certs may have been added to \c stack.
717 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
720 OPENSSL_DIR_CTX *d = NULL;
721 const char *filename;
724 /* Note that a side effect is that the CAs will be sorted by name */
726 while ((filename = OPENSSL_DIR_read(&d, dir))) {
730 if (strlen(dir) + strlen(filename) + 2 > sizeof buf) {
731 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
732 SSL_R_PATH_TOO_LONG);
735 #ifdef OPENSSL_SYS_VMS
736 r = BIO_snprintf(buf, sizeof buf, "%s%s", dir, filename);
738 r = BIO_snprintf(buf, sizeof buf, "%s/%s", dir, filename);
740 if (r <= 0 || r >= (int)sizeof(buf))
742 if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
747 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
748 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
749 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
762 /* Build a certificate chain for current certificate */
763 int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags)
765 CERT *c = s ? s->cert : ctx->cert;
766 CERT_PKEY *cpk = c->key;
767 X509_STORE *chain_store = NULL;
768 X509_STORE_CTX *xs_ctx = NULL;
769 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
774 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
777 /* Rearranging and check the chain: add everything to a store */
778 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
779 chain_store = X509_STORE_new();
780 if (chain_store == NULL)
782 for (i = 0; i < sk_X509_num(cpk->chain); i++) {
783 x = sk_X509_value(cpk->chain, i);
784 if (!X509_STORE_add_cert(chain_store, x))
787 /* Add EE cert too: it might be self signed */
788 if (!X509_STORE_add_cert(chain_store, cpk->x509))
792 chain_store = c->chain_store;
794 chain_store = s->ctx->cert_store;
796 chain_store = ctx->cert_store;
798 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
799 untrusted = cpk->chain;
802 xs_ctx = X509_STORE_CTX_new();
803 if (xs_ctx == NULL) {
804 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
807 if (!X509_STORE_CTX_init(xs_ctx, chain_store, cpk->x509, untrusted)) {
808 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
811 /* Set suite B flags if needed */
812 X509_STORE_CTX_set_flags(xs_ctx,
813 c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
815 i = X509_verify_cert(xs_ctx);
816 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
817 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
823 chain = X509_STORE_CTX_get1_chain(xs_ctx);
825 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
826 i = X509_STORE_CTX_get_error(xs_ctx);
827 ERR_add_error_data(2, "Verify error:",
828 X509_verify_cert_error_string(i));
832 /* Remove EE certificate from chain */
833 x = sk_X509_shift(chain);
835 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
836 if (sk_X509_num(chain) > 0) {
837 /* See if last cert is self signed */
838 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
839 if (X509_get_extension_flags(x) & EXFLAG_SS) {
840 x = sk_X509_pop(chain);
846 * Check security level of all CA certificates: EE will have been checked
849 for (i = 0; i < sk_X509_num(chain); i++) {
850 x = sk_X509_value(chain, i);
851 rv = ssl_security_cert(s, ctx, x, 0, 0);
853 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv);
854 sk_X509_pop_free(chain, X509_free);
859 sk_X509_pop_free(cpk->chain, X509_free);
864 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
865 X509_STORE_free(chain_store);
866 X509_STORE_CTX_free(xs_ctx);
871 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
875 pstore = &c->chain_store;
877 pstore = &c->verify_store;
878 X509_STORE_free(*pstore);
881 X509_STORE_up_ref(store);
885 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
886 int op, int bits, int nid, void *other,
890 static const int minbits_table[5] = { 80, 112, 128, 192, 256 };
892 level = SSL_CTX_get_security_level(ctx);
894 level = SSL_get_security_level(s);
898 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
901 if (op == SSL_SECOP_TMP_DH && bits < 80)
907 minbits = minbits_table[level - 1];
909 case SSL_SECOP_CIPHER_SUPPORTED:
910 case SSL_SECOP_CIPHER_SHARED:
911 case SSL_SECOP_CIPHER_CHECK:
913 const SSL_CIPHER *c = other;
914 /* No ciphers below security level */
917 /* No unauthenticated ciphersuites */
918 if (c->algorithm_auth & SSL_aNULL)
920 /* No MD5 mac ciphersuites */
921 if (c->algorithm_mac & SSL_MD5)
923 /* SHA1 HMAC is 160 bits of security */
924 if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
926 /* Level 2: no RC4 */
927 if (level >= 2 && c->algorithm_enc == SSL_RC4)
929 /* Level 3: forward secure ciphersuites only */
930 if (level >= 3 && !(c->algorithm_mkey & (SSL_kEDH | SSL_kEECDH)))
934 case SSL_SECOP_VERSION:
935 if (!SSL_IS_DTLS(s)) {
936 /* SSLv3 not allowed at level 2 */
937 if (nid <= SSL3_VERSION && level >= 2)
939 /* TLS v1.1 and above only for level 3 */
940 if (nid <= TLS1_VERSION && level >= 3)
942 /* TLS v1.2 only for level 4 and above */
943 if (nid <= TLS1_1_VERSION && level >= 4)
946 /* DTLS v1.2 only for level 4 and above */
947 if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level >= 4)
952 case SSL_SECOP_COMPRESSION:
956 case SSL_SECOP_TICKET:
967 int ssl_security(const SSL *s, int op, int bits, int nid, void *other)
969 return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex);
972 int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other)
974 return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other,
978 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, size_t *pidx)
980 int nid = EVP_PKEY_id(pk);
983 if (nid == NID_undef)
986 for (i = 0; i < OSSL_NELEM(ssl_cert_info); i++) {
987 if (ssl_cert_info[i].nid == nid) {
990 return &ssl_cert_info[i];
996 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx)
998 if (idx >= OSSL_NELEM(ssl_cert_info))
1000 return &ssl_cert_info[idx];