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>
14 #include "internal/nelem.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>
23 #include "internal/refcount.h"
25 #include "ssl_cert_table.h"
26 #include "internal/thread_once.h"
28 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
29 int op, int bits, int nid, void *other,
32 static CRYPTO_ONCE ssl_x509_store_ctx_once = CRYPTO_ONCE_STATIC_INIT;
33 static volatile int ssl_x509_store_ctx_idx = -1;
35 DEFINE_RUN_ONCE_STATIC(ssl_x509_store_ctx_init)
37 ssl_x509_store_ctx_idx = X509_STORE_CTX_get_ex_new_index(0,
38 "SSL for verify callback",
40 return ssl_x509_store_ctx_idx >= 0;
43 int SSL_get_ex_data_X509_STORE_CTX_idx(void)
46 if (!RUN_ONCE(&ssl_x509_store_ctx_once, ssl_x509_store_ctx_init))
48 return ssl_x509_store_ctx_idx;
51 CERT *ssl_cert_new(void)
53 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
56 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
60 ret->key = &(ret->pkeys[SSL_PKEY_RSA]);
62 ret->sec_cb = ssl_security_default_callback;
63 ret->sec_level = OPENSSL_TLS_SECURITY_LEVEL;
65 ret->lock = CRYPTO_THREAD_lock_new();
66 if (ret->lock == NULL) {
67 SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
75 CERT *ssl_cert_dup(CERT *cert)
77 CERT *ret = OPENSSL_zalloc(sizeof(*ret));
81 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
86 ret->key = &ret->pkeys[cert->key - cert->pkeys];
87 ret->lock = CRYPTO_THREAD_lock_new();
88 if (ret->lock == NULL) {
89 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
94 if (cert->dh_tmp != NULL) {
95 ret->dh_tmp = cert->dh_tmp;
96 EVP_PKEY_up_ref(ret->dh_tmp);
98 ret->dh_tmp_cb = cert->dh_tmp_cb;
99 ret->dh_tmp_auto = cert->dh_tmp_auto;
102 for (i = 0; i < SSL_PKEY_NUM; i++) {
103 CERT_PKEY *cpk = cert->pkeys + i;
104 CERT_PKEY *rpk = ret->pkeys + i;
105 if (cpk->x509 != NULL) {
106 rpk->x509 = cpk->x509;
107 X509_up_ref(rpk->x509);
110 if (cpk->privatekey != NULL) {
111 rpk->privatekey = cpk->privatekey;
112 EVP_PKEY_up_ref(cpk->privatekey);
116 rpk->chain = X509_chain_up_ref(cpk->chain);
118 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
122 if (cert->pkeys[i].serverinfo != NULL) {
123 /* Just copy everything. */
124 ret->pkeys[i].serverinfo =
125 OPENSSL_malloc(cert->pkeys[i].serverinfo_length);
126 if (ret->pkeys[i].serverinfo == NULL) {
127 SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
130 ret->pkeys[i].serverinfo_length = cert->pkeys[i].serverinfo_length;
131 memcpy(ret->pkeys[i].serverinfo,
132 cert->pkeys[i].serverinfo, cert->pkeys[i].serverinfo_length);
136 /* Configured sigalgs copied across */
137 if (cert->conf_sigalgs) {
138 ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen
139 * sizeof(*cert->conf_sigalgs));
140 if (ret->conf_sigalgs == NULL)
142 memcpy(ret->conf_sigalgs, cert->conf_sigalgs,
143 cert->conf_sigalgslen * sizeof(*cert->conf_sigalgs));
144 ret->conf_sigalgslen = cert->conf_sigalgslen;
146 ret->conf_sigalgs = NULL;
148 if (cert->client_sigalgs) {
149 ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen
150 * sizeof(*cert->client_sigalgs));
151 if (ret->client_sigalgs == NULL)
153 memcpy(ret->client_sigalgs, cert->client_sigalgs,
154 cert->client_sigalgslen * sizeof(*cert->client_sigalgs));
155 ret->client_sigalgslen = cert->client_sigalgslen;
157 ret->client_sigalgs = NULL;
158 /* Shared sigalgs also NULL */
159 ret->shared_sigalgs = NULL;
160 /* Copy any custom client certificate types */
162 ret->ctype = OPENSSL_memdup(cert->ctype, cert->ctype_len);
163 if (ret->ctype == NULL)
165 ret->ctype_len = cert->ctype_len;
168 ret->cert_flags = cert->cert_flags;
170 ret->cert_cb = cert->cert_cb;
171 ret->cert_cb_arg = cert->cert_cb_arg;
173 if (cert->verify_store) {
174 X509_STORE_up_ref(cert->verify_store);
175 ret->verify_store = cert->verify_store;
178 if (cert->chain_store) {
179 X509_STORE_up_ref(cert->chain_store);
180 ret->chain_store = cert->chain_store;
183 ret->sec_cb = cert->sec_cb;
184 ret->sec_level = cert->sec_level;
185 ret->sec_ex = cert->sec_ex;
187 if (!custom_exts_copy(&ret->custext, &cert->custext))
189 #ifndef OPENSSL_NO_PSK
190 if (cert->psk_identity_hint) {
191 ret->psk_identity_hint = OPENSSL_strdup(cert->psk_identity_hint);
192 if (ret->psk_identity_hint == NULL)
204 /* Free up and clear all certificates and chains */
206 void ssl_cert_clear_certs(CERT *c)
211 for (i = 0; i < SSL_PKEY_NUM; i++) {
212 CERT_PKEY *cpk = c->pkeys + i;
213 X509_free(cpk->x509);
215 EVP_PKEY_free(cpk->privatekey);
216 cpk->privatekey = NULL;
217 sk_X509_pop_free(cpk->chain, X509_free);
219 OPENSSL_free(cpk->serverinfo);
220 cpk->serverinfo = NULL;
221 cpk->serverinfo_length = 0;
225 void ssl_cert_free(CERT *c)
232 CRYPTO_DOWN_REF(&c->references, &i, c->lock);
233 REF_PRINT_COUNT("CERT", c);
236 REF_ASSERT_ISNT(i < 0);
238 #ifndef OPENSSL_NO_DH
239 EVP_PKEY_free(c->dh_tmp);
242 ssl_cert_clear_certs(c);
243 OPENSSL_free(c->conf_sigalgs);
244 OPENSSL_free(c->client_sigalgs);
245 OPENSSL_free(c->shared_sigalgs);
246 OPENSSL_free(c->ctype);
247 X509_STORE_free(c->verify_store);
248 X509_STORE_free(c->chain_store);
249 custom_exts_free(&c->custext);
250 #ifndef OPENSSL_NO_PSK
251 OPENSSL_free(c->psk_identity_hint);
253 CRYPTO_THREAD_lock_free(c->lock);
257 int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
260 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
263 for (i = 0; i < sk_X509_num(chain); i++) {
264 r = ssl_security_cert(s, ctx, sk_X509_value(chain, i), 0, 0);
266 SSLerr(SSL_F_SSL_CERT_SET0_CHAIN, r);
270 sk_X509_pop_free(cpk->chain, X509_free);
275 int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain)
277 STACK_OF(X509) *dchain;
279 return ssl_cert_set0_chain(s, ctx, NULL);
280 dchain = X509_chain_up_ref(chain);
283 if (!ssl_cert_set0_chain(s, ctx, dchain)) {
284 sk_X509_pop_free(dchain, X509_free);
290 int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
293 CERT_PKEY *cpk = s ? s->cert->key : ctx->cert->key;
296 r = ssl_security_cert(s, ctx, x, 0, 0);
298 SSLerr(SSL_F_SSL_CERT_ADD0_CHAIN_CERT, r);
302 cpk->chain = sk_X509_new_null();
303 if (!cpk->chain || !sk_X509_push(cpk->chain, x))
308 int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x)
310 if (!ssl_cert_add0_chain_cert(s, ctx, x))
316 int ssl_cert_select_current(CERT *c, X509 *x)
321 for (i = 0; i < SSL_PKEY_NUM; i++) {
322 CERT_PKEY *cpk = c->pkeys + i;
323 if (cpk->x509 == x && cpk->privatekey) {
329 for (i = 0; i < SSL_PKEY_NUM; i++) {
330 CERT_PKEY *cpk = c->pkeys + i;
331 if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) {
339 int ssl_cert_set_current(CERT *c, long op)
344 if (op == SSL_CERT_SET_FIRST)
346 else if (op == SSL_CERT_SET_NEXT) {
347 idx = (int)(c->key - c->pkeys + 1);
348 if (idx >= SSL_PKEY_NUM)
352 for (i = idx; i < SSL_PKEY_NUM; i++) {
353 CERT_PKEY *cpk = c->pkeys + i;
354 if (cpk->x509 && cpk->privatekey) {
362 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg)
365 c->cert_cb_arg = arg;
368 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
372 X509_STORE *verify_store;
373 X509_STORE_CTX *ctx = NULL;
374 X509_VERIFY_PARAM *param;
376 if ((sk == NULL) || (sk_X509_num(sk) == 0))
379 if (s->cert->verify_store)
380 verify_store = s->cert->verify_store;
382 verify_store = s->ctx->cert_store;
384 ctx = X509_STORE_CTX_new();
386 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
390 x = sk_X509_value(sk, 0);
391 if (!X509_STORE_CTX_init(ctx, verify_store, x, sk)) {
392 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
395 param = X509_STORE_CTX_get0_param(ctx);
397 * XXX: Separate @AUTHSECLEVEL and @TLSSECLEVEL would be useful at some
398 * point, for now a single @SECLEVEL sets the same policy for TLS crypto
399 * and PKI authentication.
401 X509_VERIFY_PARAM_set_auth_level(param, SSL_get_security_level(s));
403 /* Set suite B flags if needed */
404 X509_STORE_CTX_set_flags(ctx, tls1_suiteb(s));
405 if (!X509_STORE_CTX_set_ex_data
406 (ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s)) {
410 /* Verify via DANE if enabled */
411 if (DANETLS_ENABLED(&s->dane))
412 X509_STORE_CTX_set0_dane(ctx, &s->dane);
415 * We need to inherit the verify parameters. These can be determined by
416 * the context: if its a server it will verify SSL client certificates or
420 X509_STORE_CTX_set_default(ctx, s->server ? "ssl_client" : "ssl_server");
422 * Anything non-default in "s->param" should overwrite anything in the ctx.
424 X509_VERIFY_PARAM_set1(param, s->param);
426 if (s->verify_callback)
427 X509_STORE_CTX_set_verify_cb(ctx, s->verify_callback);
429 if (s->ctx->app_verify_callback != NULL)
430 i = s->ctx->app_verify_callback(ctx, s->ctx->app_verify_arg);
432 i = X509_verify_cert(ctx);
434 s->verify_result = X509_STORE_CTX_get_error(ctx);
435 sk_X509_pop_free(s->verified_chain, X509_free);
436 s->verified_chain = NULL;
437 if (X509_STORE_CTX_get0_chain(ctx) != NULL) {
438 s->verified_chain = X509_STORE_CTX_get1_chain(ctx);
439 if (s->verified_chain == NULL) {
440 SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
445 /* Move peername from the store context params to the SSL handle's */
446 X509_VERIFY_PARAM_move_peername(s->param, param);
449 X509_STORE_CTX_free(ctx);
453 static void set0_CA_list(STACK_OF(X509_NAME) **ca_list,
454 STACK_OF(X509_NAME) *name_list)
456 sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
457 *ca_list = name_list;
460 STACK_OF(X509_NAME) *SSL_dup_CA_list(const STACK_OF(X509_NAME) *sk)
463 STACK_OF(X509_NAME) *ret;
466 ret = sk_X509_NAME_new_null();
468 SSLerr(SSL_F_SSL_DUP_CA_LIST, ERR_R_MALLOC_FAILURE);
471 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
472 name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
473 if (name == NULL || !sk_X509_NAME_push(ret, name)) {
474 sk_X509_NAME_pop_free(ret, X509_NAME_free);
475 X509_NAME_free(name);
482 void SSL_set0_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
484 set0_CA_list(&s->ca_names, name_list);
487 void SSL_CTX_set0_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
489 set0_CA_list(&ctx->ca_names, name_list);
492 const STACK_OF(X509_NAME) *SSL_CTX_get0_CA_list(const SSL_CTX *ctx)
494 return ctx->ca_names;
497 const STACK_OF(X509_NAME) *SSL_get0_CA_list(const SSL *s)
499 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
502 void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
504 SSL_CTX_set0_CA_list(ctx, name_list);
507 STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
509 return ctx->ca_names;
512 void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
514 SSL_set0_CA_list(s, name_list);
517 const STACK_OF(X509_NAME) *SSL_get0_peer_CA_list(const SSL *s)
519 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
522 STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
525 return s->s3 != NULL ? s->s3->tmp.peer_ca_names : NULL;
526 return s->ca_names != NULL ? s->ca_names : s->ctx->ca_names;
529 static int add_ca_name(STACK_OF(X509_NAME) **sk, const X509 *x)
535 if (*sk == NULL && ((*sk = sk_X509_NAME_new_null()) == NULL))
538 if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
541 if (!sk_X509_NAME_push(*sk, name)) {
542 X509_NAME_free(name);
548 int SSL_add1_CA_list(SSL *ssl, const X509 *x)
550 return add_ca_name(&ssl->ca_names, x);
553 int SSL_CTX_add1_CA_list(SSL_CTX *ctx, const X509 *x)
555 return add_ca_name(&ctx->ca_names, x);
558 int SSL_add_client_CA(SSL *ssl, X509 *x)
560 return add_ca_name(&ssl->ca_names, x);
563 int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
565 return add_ca_name(&ctx->ca_names, x);
568 static int xname_sk_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
570 return (X509_NAME_cmp(*a, *b));
573 static int xname_cmp(const X509_NAME *a, const X509_NAME *b)
575 return X509_NAME_cmp(a, b);
578 static unsigned long xname_hash(const X509_NAME *a)
580 return X509_NAME_hash((X509_NAME *)a);
584 * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
585 * it doesn't really have anything to do with clients (except that a common use
586 * for a stack of CAs is to send it to the client). Actually, it doesn't have
587 * much to do with CAs, either, since it will load any old cert.
588 * \param file the file containing one or more certs.
589 * \return a ::STACK containing the certs.
591 STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
593 BIO *in = BIO_new(BIO_s_file());
595 X509_NAME *xn = NULL;
596 STACK_OF(X509_NAME) *ret = NULL;
597 LHASH_OF(X509_NAME) *name_hash = lh_X509_NAME_new(xname_hash, xname_cmp);
599 if ((name_hash == NULL) || (in == NULL)) {
600 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
604 if (!BIO_read_filename(in, file))
608 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
611 ret = sk_X509_NAME_new_null();
613 SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
617 if ((xn = X509_get_subject_name(x)) == NULL)
619 /* check for duplicates */
620 xn = X509_NAME_dup(xn);
623 if (lh_X509_NAME_retrieve(name_hash, xn) != NULL) {
628 lh_X509_NAME_insert(name_hash, xn);
629 if (!sk_X509_NAME_push(ret, xn))
637 sk_X509_NAME_pop_free(ret, X509_NAME_free);
642 lh_X509_NAME_free(name_hash);
649 * Add a file of certs to a stack.
650 * \param stack the stack to add to.
651 * \param file the file to add from. All certs in this file that are not
652 * already in the stack will be added.
653 * \return 1 for success, 0 for failure. Note that in the case of failure some
654 * certs may have been added to \c stack.
657 int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
662 X509_NAME *xn = NULL;
664 int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
666 oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_sk_cmp);
668 in = BIO_new(BIO_s_file());
671 SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK, ERR_R_MALLOC_FAILURE);
675 if (!BIO_read_filename(in, file))
679 if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
681 if ((xn = X509_get_subject_name(x)) == NULL)
683 xn = X509_NAME_dup(xn);
686 if (sk_X509_NAME_find(stack, xn) >= 0) {
689 } else if (!sk_X509_NAME_push(stack, xn)) {
703 (void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
708 * Add a directory of certs to a stack.
709 * \param stack the stack to append to.
710 * \param dir the directory to append from. All files in this directory will be
711 * examined as potential certs. Any that are acceptable to
712 * SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
714 * \return 1 for success, 0 for failure. Note that in the case of failure some
715 * certs may have been added to \c stack.
718 int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
721 OPENSSL_DIR_CTX *d = NULL;
722 const char *filename;
725 /* Note that a side effect is that the CAs will be sorted by name */
727 while ((filename = OPENSSL_DIR_read(&d, dir))) {
731 if (strlen(dir) + strlen(filename) + 2 > sizeof buf) {
732 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
733 SSL_R_PATH_TOO_LONG);
736 #ifdef OPENSSL_SYS_VMS
737 r = BIO_snprintf(buf, sizeof buf, "%s%s", dir, filename);
739 r = BIO_snprintf(buf, sizeof buf, "%s/%s", dir, filename);
741 if (r <= 0 || r >= (int)sizeof(buf))
743 if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
748 SYSerr(SYS_F_OPENDIR, get_last_sys_error());
749 ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
750 SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
763 /* Build a certificate chain for current certificate */
764 int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags)
766 CERT *c = s ? s->cert : ctx->cert;
767 CERT_PKEY *cpk = c->key;
768 X509_STORE *chain_store = NULL;
769 X509_STORE_CTX *xs_ctx = NULL;
770 STACK_OF(X509) *chain = NULL, *untrusted = NULL;
775 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET);
778 /* Rearranging and check the chain: add everything to a store */
779 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) {
780 chain_store = X509_STORE_new();
781 if (chain_store == NULL)
783 for (i = 0; i < sk_X509_num(cpk->chain); i++) {
784 x = sk_X509_value(cpk->chain, i);
785 if (!X509_STORE_add_cert(chain_store, x))
788 /* Add EE cert too: it might be self signed */
789 if (!X509_STORE_add_cert(chain_store, cpk->x509))
793 chain_store = c->chain_store;
795 chain_store = s->ctx->cert_store;
797 chain_store = ctx->cert_store;
799 if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED)
800 untrusted = cpk->chain;
803 xs_ctx = X509_STORE_CTX_new();
804 if (xs_ctx == NULL) {
805 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_MALLOC_FAILURE);
808 if (!X509_STORE_CTX_init(xs_ctx, chain_store, cpk->x509, untrusted)) {
809 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB);
812 /* Set suite B flags if needed */
813 X509_STORE_CTX_set_flags(xs_ctx,
814 c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS);
816 i = X509_verify_cert(xs_ctx);
817 if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) {
818 if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR)
824 chain = X509_STORE_CTX_get1_chain(xs_ctx);
826 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED);
827 i = X509_STORE_CTX_get_error(xs_ctx);
828 ERR_add_error_data(2, "Verify error:",
829 X509_verify_cert_error_string(i));
833 /* Remove EE certificate from chain */
834 x = sk_X509_shift(chain);
836 if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) {
837 if (sk_X509_num(chain) > 0) {
838 /* See if last cert is self signed */
839 x = sk_X509_value(chain, sk_X509_num(chain) - 1);
840 if (X509_get_extension_flags(x) & EXFLAG_SS) {
841 x = sk_X509_pop(chain);
847 * Check security level of all CA certificates: EE will have been checked
850 for (i = 0; i < sk_X509_num(chain); i++) {
851 x = sk_X509_value(chain, i);
852 rv = ssl_security_cert(s, ctx, x, 0, 0);
854 SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, rv);
855 sk_X509_pop_free(chain, X509_free);
860 sk_X509_pop_free(cpk->chain, X509_free);
865 if (flags & SSL_BUILD_CHAIN_FLAG_CHECK)
866 X509_STORE_free(chain_store);
867 X509_STORE_CTX_free(xs_ctx);
872 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref)
876 pstore = &c->chain_store;
878 pstore = &c->verify_store;
879 X509_STORE_free(*pstore);
882 X509_STORE_up_ref(store);
886 static int ssl_security_default_callback(const SSL *s, const SSL_CTX *ctx,
887 int op, int bits, int nid, void *other,
891 static const int minbits_table[5] = { 80, 112, 128, 192, 256 };
893 level = SSL_CTX_get_security_level(ctx);
895 level = SSL_get_security_level(s);
899 * No EDH keys weaker than 1024-bits even at level 0, otherwise,
902 if (op == SSL_SECOP_TMP_DH && bits < 80)
908 minbits = minbits_table[level - 1];
910 case SSL_SECOP_CIPHER_SUPPORTED:
911 case SSL_SECOP_CIPHER_SHARED:
912 case SSL_SECOP_CIPHER_CHECK:
914 const SSL_CIPHER *c = other;
915 /* No ciphers below security level */
918 /* No unauthenticated ciphersuites */
919 if (c->algorithm_auth & SSL_aNULL)
921 /* No MD5 mac ciphersuites */
922 if (c->algorithm_mac & SSL_MD5)
924 /* SHA1 HMAC is 160 bits of security */
925 if (minbits > 160 && c->algorithm_mac & SSL_SHA1)
927 /* Level 2: no RC4 */
928 if (level >= 2 && c->algorithm_enc == SSL_RC4)
930 /* Level 3: forward secure ciphersuites only */
931 if (level >= 3 && !(c->algorithm_mkey & (SSL_kEDH | SSL_kEECDH)))
935 case SSL_SECOP_VERSION:
936 if (!SSL_IS_DTLS(s)) {
937 /* SSLv3 not allowed at level 2 */
938 if (nid <= SSL3_VERSION && level >= 2)
940 /* TLS v1.1 and above only for level 3 */
941 if (nid <= TLS1_VERSION && level >= 3)
943 /* TLS v1.2 only for level 4 and above */
944 if (nid <= TLS1_1_VERSION && level >= 4)
947 /* DTLS v1.2 only for level 4 and above */
948 if (DTLS_VERSION_LT(nid, DTLS1_2_VERSION) && level >= 4)
953 case SSL_SECOP_COMPRESSION:
957 case SSL_SECOP_TICKET:
968 int ssl_security(const SSL *s, int op, int bits, int nid, void *other)
970 return s->cert->sec_cb(s, NULL, op, bits, nid, other, s->cert->sec_ex);
973 int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other)
975 return ctx->cert->sec_cb(NULL, ctx, op, bits, nid, other,
979 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk, size_t *pidx)
981 int nid = EVP_PKEY_id(pk);
984 if (nid == NID_undef)
987 for (i = 0; i < OSSL_NELEM(ssl_cert_info); i++) {
988 if (ssl_cert_info[i].nid == nid) {
991 return &ssl_cert_info[i];
997 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx)
999 if (idx >= OSSL_NELEM(ssl_cert_info))
1001 return &ssl_cert_info[idx];