2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999-2004 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
61 #include <openssl/x509v3.h>
62 #include <openssl/x509_vfy.h>
64 static void x509v3_cache_extensions(X509
*x
);
66 static int check_ssl_ca(const X509
*x
);
67 static int check_purpose_ssl_client(const X509_PURPOSE
*xp
, const X509
*x
, int ca
);
68 static int check_purpose_ssl_server(const X509_PURPOSE
*xp
, const X509
*x
, int ca
);
69 static int check_purpose_ns_ssl_server(const X509_PURPOSE
*xp
, const X509
*x
, int ca
);
70 static int purpose_smime(const X509
*x
, int ca
);
71 static int check_purpose_smime_sign(const X509_PURPOSE
*xp
, const X509
*x
, int ca
);
72 static int check_purpose_smime_encrypt(const X509_PURPOSE
*xp
, const X509
*x
, int ca
);
73 static int check_purpose_crl_sign(const X509_PURPOSE
*xp
, const X509
*x
, int ca
);
74 static int no_check(const X509_PURPOSE
*xp
, const X509
*x
, int ca
);
75 static int ocsp_helper(const X509_PURPOSE
*xp
, const X509
*x
, int ca
);
77 static int xp_cmp(const X509_PURPOSE
* const *a
,
78 const X509_PURPOSE
* const *b
);
79 static void xptable_free(X509_PURPOSE
*p
);
81 static X509_PURPOSE xstandard
[] = {
82 {X509_PURPOSE_SSL_CLIENT
, X509_TRUST_SSL_CLIENT
, 0, check_purpose_ssl_client
, "SSL client", "sslclient", NULL
},
83 {X509_PURPOSE_SSL_SERVER
, X509_TRUST_SSL_SERVER
, 0, check_purpose_ssl_server
, "SSL server", "sslserver", NULL
},
84 {X509_PURPOSE_NS_SSL_SERVER
, X509_TRUST_SSL_SERVER
, 0, check_purpose_ns_ssl_server
, "Netscape SSL server", "nssslserver", NULL
},
85 {X509_PURPOSE_SMIME_SIGN
, X509_TRUST_EMAIL
, 0, check_purpose_smime_sign
, "S/MIME signing", "smimesign", NULL
},
86 {X509_PURPOSE_SMIME_ENCRYPT
, X509_TRUST_EMAIL
, 0, check_purpose_smime_encrypt
, "S/MIME encryption", "smimeencrypt", NULL
},
87 {X509_PURPOSE_CRL_SIGN
, X509_TRUST_COMPAT
, 0, check_purpose_crl_sign
, "CRL signing", "crlsign", NULL
},
88 {X509_PURPOSE_ANY
, X509_TRUST_DEFAULT
, 0, no_check
, "Any Purpose", "any", NULL
},
89 {X509_PURPOSE_OCSP_HELPER
, X509_TRUST_COMPAT
, 0, ocsp_helper
, "OCSP helper", "ocsphelper", NULL
},
92 #define X509_PURPOSE_COUNT (sizeof(xstandard)/sizeof(X509_PURPOSE))
94 IMPLEMENT_STACK_OF(X509_PURPOSE
)
96 static STACK_OF(X509_PURPOSE
) *xptable
= NULL
;
98 static int xp_cmp(const X509_PURPOSE
* const *a
,
99 const X509_PURPOSE
* const *b
)
101 return (*a
)->purpose
- (*b
)->purpose
;
104 /* As much as I'd like to make X509_check_purpose use a "const" X509*
105 * I really can't because it does recalculate hashes and do other non-const
107 int X509_check_purpose(X509
*x
, int id
, int ca
)
110 const X509_PURPOSE
*pt
;
111 if(!(x
->ex_flags
& EXFLAG_SET
)) {
112 CRYPTO_w_lock(CRYPTO_LOCK_X509
);
113 x509v3_cache_extensions(x
);
114 CRYPTO_w_unlock(CRYPTO_LOCK_X509
);
116 if(id
== -1) return 1;
117 idx
= X509_PURPOSE_get_by_id(id
);
118 if(idx
== -1) return -1;
119 pt
= X509_PURPOSE_get0(idx
);
120 return pt
->check_purpose(pt
, x
, ca
);
123 int X509_PURPOSE_set(int *p
, int purpose
)
125 if(X509_PURPOSE_get_by_id(purpose
) == -1) {
126 X509V3err(X509V3_F_X509_PURPOSE_SET
, X509V3_R_INVALID_PURPOSE
);
133 int X509_PURPOSE_get_count(void)
135 if(!xptable
) return X509_PURPOSE_COUNT
;
136 return sk_X509_PURPOSE_num(xptable
) + X509_PURPOSE_COUNT
;
139 X509_PURPOSE
* X509_PURPOSE_get0(int idx
)
141 if(idx
< 0) return NULL
;
142 if(idx
< (int)X509_PURPOSE_COUNT
) return xstandard
+ idx
;
143 return sk_X509_PURPOSE_value(xptable
, idx
- X509_PURPOSE_COUNT
);
146 int X509_PURPOSE_get_by_sname(char *sname
)
150 for(i
= 0; i
< X509_PURPOSE_get_count(); i
++) {
151 xptmp
= X509_PURPOSE_get0(i
);
152 if(!strcmp(xptmp
->sname
, sname
)) return i
;
157 int X509_PURPOSE_get_by_id(int purpose
)
161 if((purpose
>= X509_PURPOSE_MIN
) && (purpose
<= X509_PURPOSE_MAX
))
162 return purpose
- X509_PURPOSE_MIN
;
163 tmp
.purpose
= purpose
;
164 if(!xptable
) return -1;
165 idx
= sk_X509_PURPOSE_find(xptable
, &tmp
);
166 if(idx
== -1) return -1;
167 return idx
+ X509_PURPOSE_COUNT
;
170 int X509_PURPOSE_add(int id
, int trust
, int flags
,
171 int (*ck
)(const X509_PURPOSE
*, const X509
*, int),
172 char *name
, char *sname
, void *arg
)
176 /* This is set according to what we change: application can't set it */
177 flags
&= ~X509_PURPOSE_DYNAMIC
;
178 /* This will always be set for application modified trust entries */
179 flags
|= X509_PURPOSE_DYNAMIC_NAME
;
180 /* Get existing entry if any */
181 idx
= X509_PURPOSE_get_by_id(id
);
182 /* Need a new entry */
184 if(!(ptmp
= OPENSSL_malloc(sizeof(X509_PURPOSE
)))) {
185 X509V3err(X509V3_F_X509_PURPOSE_ADD
,ERR_R_MALLOC_FAILURE
);
188 ptmp
->flags
= X509_PURPOSE_DYNAMIC
;
189 } else ptmp
= X509_PURPOSE_get0(idx
);
191 /* OPENSSL_free existing name if dynamic */
192 if(ptmp
->flags
& X509_PURPOSE_DYNAMIC_NAME
) {
193 OPENSSL_free(ptmp
->name
);
194 OPENSSL_free(ptmp
->sname
);
196 /* dup supplied name */
197 ptmp
->name
= BUF_strdup(name
);
198 ptmp
->sname
= BUF_strdup(sname
);
199 if(!ptmp
->name
|| !ptmp
->sname
) {
200 X509V3err(X509V3_F_X509_PURPOSE_ADD
,ERR_R_MALLOC_FAILURE
);
203 /* Keep the dynamic flag of existing entry */
204 ptmp
->flags
&= X509_PURPOSE_DYNAMIC
;
205 /* Set all other flags */
206 ptmp
->flags
|= flags
;
210 ptmp
->check_purpose
= ck
;
211 ptmp
->usr_data
= arg
;
213 /* If its a new entry manage the dynamic table */
215 if(!xptable
&& !(xptable
= sk_X509_PURPOSE_new(xp_cmp
))) {
216 X509V3err(X509V3_F_X509_PURPOSE_ADD
,ERR_R_MALLOC_FAILURE
);
219 if (!sk_X509_PURPOSE_push(xptable
, ptmp
)) {
220 X509V3err(X509V3_F_X509_PURPOSE_ADD
,ERR_R_MALLOC_FAILURE
);
227 static void xptable_free(X509_PURPOSE
*p
)
230 if (p
->flags
& X509_PURPOSE_DYNAMIC
)
232 if (p
->flags
& X509_PURPOSE_DYNAMIC_NAME
) {
233 OPENSSL_free(p
->name
);
234 OPENSSL_free(p
->sname
);
240 void X509_PURPOSE_cleanup(void)
243 sk_X509_PURPOSE_pop_free(xptable
, xptable_free
);
244 for(i
= 0; i
< X509_PURPOSE_COUNT
; i
++) xptable_free(xstandard
+ i
);
248 int X509_PURPOSE_get_id(X509_PURPOSE
*xp
)
253 char *X509_PURPOSE_get0_name(X509_PURPOSE
*xp
)
258 char *X509_PURPOSE_get0_sname(X509_PURPOSE
*xp
)
263 int X509_PURPOSE_get_trust(X509_PURPOSE
*xp
)
268 static int nid_cmp(int *a
, int *b
)
273 int X509_supported_extension(X509_EXTENSION
*ex
)
275 /* This table is a list of the NIDs of supported extensions:
276 * that is those which are used by the verify process. If
277 * an extension is critical and doesn't appear in this list
278 * then the verify process will normally reject the certificate.
279 * The list must be kept in numerical order because it will be
280 * searched using bsearch.
283 static int supported_nids
[] = {
284 NID_netscape_cert_type
, /* 71 */
285 NID_key_usage
, /* 83 */
286 NID_subject_alt_name
, /* 85 */
287 NID_basic_constraints
, /* 87 */
288 NID_ext_key_usage
/* 126 */
293 ex_nid
= OBJ_obj2nid(X509_EXTENSION_get_object(ex
));
295 if (ex_nid
== NID_undef
)
298 if (OBJ_bsearch((char *)&ex_nid
, (char *)supported_nids
,
299 sizeof(supported_nids
)/sizeof(int), sizeof(int),
300 (int (*)(const void *, const void *))nid_cmp
))
306 static void x509v3_cache_extensions(X509
*x
)
308 BASIC_CONSTRAINTS
*bs
;
309 ASN1_BIT_STRING
*usage
;
311 EXTENDED_KEY_USAGE
*extusage
;
315 if(x
->ex_flags
& EXFLAG_SET
) return;
316 #ifndef OPENSSL_NO_SHA
317 X509_digest(x
, EVP_sha1(), x
->sha1_hash
, NULL
);
319 /* Does subject name match issuer ? */
320 if(!X509_NAME_cmp(X509_get_subject_name(x
), X509_get_issuer_name(x
)))
321 x
->ex_flags
|= EXFLAG_SS
;
322 /* V1 should mean no extensions ... */
323 if(!X509_get_version(x
)) x
->ex_flags
|= EXFLAG_V1
;
324 /* Handle basic constraints */
325 if((bs
=X509_get_ext_d2i(x
, NID_basic_constraints
, NULL
, NULL
))) {
326 if(bs
->ca
) x
->ex_flags
|= EXFLAG_CA
;
328 if((bs
->pathlen
->type
== V_ASN1_NEG_INTEGER
)
330 x
->ex_flags
|= EXFLAG_INVALID
;
332 } else x
->ex_pathlen
= ASN1_INTEGER_get(bs
->pathlen
);
333 } else x
->ex_pathlen
= -1;
334 BASIC_CONSTRAINTS_free(bs
);
335 x
->ex_flags
|= EXFLAG_BCONS
;
337 /* Handle key usage */
338 if((usage
=X509_get_ext_d2i(x
, NID_key_usage
, NULL
, NULL
))) {
339 if(usage
->length
> 0) {
340 x
->ex_kusage
= usage
->data
[0];
341 if(usage
->length
> 1)
342 x
->ex_kusage
|= usage
->data
[1] << 8;
343 } else x
->ex_kusage
= 0;
344 x
->ex_flags
|= EXFLAG_KUSAGE
;
345 ASN1_BIT_STRING_free(usage
);
348 if((extusage
=X509_get_ext_d2i(x
, NID_ext_key_usage
, NULL
, NULL
))) {
349 x
->ex_flags
|= EXFLAG_XKUSAGE
;
350 for(i
= 0; i
< sk_ASN1_OBJECT_num(extusage
); i
++) {
351 switch(OBJ_obj2nid(sk_ASN1_OBJECT_value(extusage
,i
))) {
352 case NID_server_auth
:
353 x
->ex_xkusage
|= XKU_SSL_SERVER
;
356 case NID_client_auth
:
357 x
->ex_xkusage
|= XKU_SSL_CLIENT
;
360 case NID_email_protect
:
361 x
->ex_xkusage
|= XKU_SMIME
;
365 x
->ex_xkusage
|= XKU_CODE_SIGN
;
370 x
->ex_xkusage
|= XKU_SGC
;
374 x
->ex_xkusage
|= XKU_OCSP_SIGN
;
378 x
->ex_xkusage
|= XKU_TIMESTAMP
;
382 x
->ex_xkusage
|= XKU_DVCS
;
386 sk_ASN1_OBJECT_pop_free(extusage
, ASN1_OBJECT_free
);
389 if((ns
=X509_get_ext_d2i(x
, NID_netscape_cert_type
, NULL
, NULL
))) {
390 if(ns
->length
> 0) x
->ex_nscert
= ns
->data
[0];
391 else x
->ex_nscert
= 0;
392 x
->ex_flags
|= EXFLAG_NSCERT
;
393 ASN1_BIT_STRING_free(ns
);
395 x
->skid
=X509_get_ext_d2i(x
, NID_subject_key_identifier
, NULL
, NULL
);
396 x
->akid
=X509_get_ext_d2i(x
, NID_authority_key_identifier
, NULL
, NULL
);
397 for (i
= 0; i
< X509_get_ext_count(x
); i
++)
399 ex
= X509_get_ext(x
, i
);
400 if (!X509_EXTENSION_get_critical(ex
))
402 if (!X509_supported_extension(ex
))
404 x
->ex_flags
|= EXFLAG_CRITICAL
;
408 x
->ex_flags
|= EXFLAG_SET
;
411 /* CA checks common to all purposes
415 * 2 basicConstraints absent so "maybe" a CA
416 * 3 basicConstraints absent but self signed V1.
417 * 4 basicConstraints absent but keyUsage present and keyCertSign asserted.
420 #define V1_ROOT (EXFLAG_V1|EXFLAG_SS)
421 #define ku_reject(x, usage) \
422 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
423 #define xku_reject(x, usage) \
424 (((x)->ex_flags & EXFLAG_XKUSAGE) && !((x)->ex_xkusage & (usage)))
425 #define ns_reject(x, usage) \
426 (((x)->ex_flags & EXFLAG_NSCERT) && !((x)->ex_nscert & (usage)))
428 static int check_ca(const X509
*x
)
430 /* keyUsage if present should allow cert signing */
431 if(ku_reject(x
, KU_KEY_CERT_SIGN
)) return 0;
432 if(x
->ex_flags
& EXFLAG_BCONS
) {
433 if(x
->ex_flags
& EXFLAG_CA
) return 1;
434 /* If basicConstraints says not a CA then say so */
437 /* we support V1 roots for... uh, I don't really know why. */
438 if((x
->ex_flags
& V1_ROOT
) == V1_ROOT
) return 3;
439 /* If key usage present it must have certSign so tolerate it */
440 else if (x
->ex_flags
& EXFLAG_KUSAGE
) return 4;
441 /* Older certificates could have Netscape-specific CA types */
442 else if (x
->ex_flags
& EXFLAG_NSCERT
443 && x
->ex_nscert
& NS_ANY_CA
) return 5;
444 /* 2 means "I don't know...", which is legal for V1 and V2 */
445 else if (x
->ex_flags
& EXFLAG_V1
) return 2;
446 /* can this still be regarded a CA certificate? I doubt it */
451 int X509_check_ca(X509
*x
)
453 if(!(x
->ex_flags
& EXFLAG_SET
)) {
454 CRYPTO_w_lock(CRYPTO_LOCK_X509
);
455 x509v3_cache_extensions(x
);
456 CRYPTO_w_unlock(CRYPTO_LOCK_X509
);
462 /* Check SSL CA: common checks for SSL client and server */
463 static int check_ssl_ca(const X509
*x
)
466 ca_ret
= check_ca(x
);
467 if(!ca_ret
) return 0;
468 /* check nsCertType if present */
469 if(ca_ret
!= 5 || x
->ex_nscert
& NS_SSL_CA
) return ca_ret
;
474 static int check_purpose_ssl_client(const X509_PURPOSE
*xp
, const X509
*x
, int ca
)
476 if(xku_reject(x
,XKU_SSL_CLIENT
)) return 0;
477 if(ca
) return check_ssl_ca(x
);
478 /* We need to do digital signatures with it */
479 if(ku_reject(x
,KU_DIGITAL_SIGNATURE
)) return 0;
480 /* nsCertType if present should allow SSL client use */
481 if(ns_reject(x
, NS_SSL_CLIENT
)) return 0;
485 static int check_purpose_ssl_server(const X509_PURPOSE
*xp
, const X509
*x
, int ca
)
487 if(xku_reject(x
,XKU_SSL_SERVER
|XKU_SGC
)) return 0;
488 if(ca
) return check_ssl_ca(x
);
490 if(ns_reject(x
, NS_SSL_SERVER
)) return 0;
491 /* Now as for keyUsage: we'll at least need to sign OR encipher */
492 if(ku_reject(x
, KU_DIGITAL_SIGNATURE
|KU_KEY_ENCIPHERMENT
)) return 0;
498 static int check_purpose_ns_ssl_server(const X509_PURPOSE
*xp
, const X509
*x
, int ca
)
501 ret
= check_purpose_ssl_server(xp
, x
, ca
);
502 if(!ret
|| ca
) return ret
;
503 /* We need to encipher or Netscape complains */
504 if(ku_reject(x
, KU_KEY_ENCIPHERMENT
)) return 0;
508 /* common S/MIME checks */
509 static int purpose_smime(const X509
*x
, int ca
)
511 if(xku_reject(x
,XKU_SMIME
)) return 0;
514 ca_ret
= check_ca(x
);
515 if(!ca_ret
) return 0;
516 /* check nsCertType if present */
517 if(ca_ret
!= 5 || x
->ex_nscert
& NS_SMIME_CA
) return ca_ret
;
520 if(x
->ex_flags
& EXFLAG_NSCERT
) {
521 if(x
->ex_nscert
& NS_SMIME
) return 1;
522 /* Workaround for some buggy certificates */
523 if(x
->ex_nscert
& NS_SSL_CLIENT
) return 2;
529 static int check_purpose_smime_sign(const X509_PURPOSE
*xp
, const X509
*x
, int ca
)
532 ret
= purpose_smime(x
, ca
);
533 if(!ret
|| ca
) return ret
;
534 if(ku_reject(x
, KU_DIGITAL_SIGNATURE
|KU_NON_REPUDIATION
)) return 0;
538 static int check_purpose_smime_encrypt(const X509_PURPOSE
*xp
, const X509
*x
, int ca
)
541 ret
= purpose_smime(x
, ca
);
542 if(!ret
|| ca
) return ret
;
543 if(ku_reject(x
, KU_KEY_ENCIPHERMENT
)) return 0;
547 static int check_purpose_crl_sign(const X509_PURPOSE
*xp
, const X509
*x
, int ca
)
551 if((ca_ret
= check_ca(x
)) != 2) return ca_ret
;
554 if(ku_reject(x
, KU_CRL_SIGN
)) return 0;
558 /* OCSP helper: this is *not* a full OCSP check. It just checks that
559 * each CA is valid. Additional checks must be made on the chain.
562 static int ocsp_helper(const X509_PURPOSE
*xp
, const X509
*x
, int ca
)
564 /* Must be a valid CA. Should we really support the "I don't know"
566 if(ca
) return check_ca(x
);
567 /* leaf certificate is checked in OCSP_verify() */
571 static int no_check(const X509_PURPOSE
*xp
, const X509
*x
, int ca
)
576 /* Various checks to see if one certificate issued the second.
577 * This can be used to prune a set of possible issuer certificates
578 * which have been looked up using some simple method such as by
581 * 1. Check issuer_name(subject) == subject_name(issuer)
582 * 2. If akid(subject) exists check it matches issuer
583 * 3. If key_usage(issuer) exists check it supports certificate signing
584 * returns 0 for OK, positive for reason for mismatch, reasons match
585 * codes for X509_verify_cert()
588 int X509_check_issued(X509
*issuer
, X509
*subject
)
590 if(X509_NAME_cmp(X509_get_subject_name(issuer
),
591 X509_get_issuer_name(subject
)))
592 return X509_V_ERR_SUBJECT_ISSUER_MISMATCH
;
593 x509v3_cache_extensions(issuer
);
594 x509v3_cache_extensions(subject
);
596 /* Check key ids (if present) */
597 if(subject
->akid
->keyid
&& issuer
->skid
&&
598 ASN1_OCTET_STRING_cmp(subject
->akid
->keyid
, issuer
->skid
) )
599 return X509_V_ERR_AKID_SKID_MISMATCH
;
600 /* Check serial number */
601 if(subject
->akid
->serial
&&
602 ASN1_INTEGER_cmp(X509_get_serialNumber(issuer
),
603 subject
->akid
->serial
))
604 return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH
;
605 /* Check issuer name */
606 if(subject
->akid
->issuer
) {
607 /* Ugh, for some peculiar reason AKID includes
608 * SEQUENCE OF GeneralName. So look for a DirName.
609 * There may be more than one but we only take any
610 * notice of the first.
614 X509_NAME
*nm
= NULL
;
616 gens
= subject
->akid
->issuer
;
617 for(i
= 0; i
< sk_GENERAL_NAME_num(gens
); i
++) {
618 gen
= sk_GENERAL_NAME_value(gens
, i
);
619 if(gen
->type
== GEN_DIRNAME
) {
624 if(nm
&& X509_NAME_cmp(nm
, X509_get_issuer_name(issuer
)))
625 return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH
;
628 if(ku_reject(issuer
, KU_KEY_CERT_SIGN
)) return X509_V_ERR_KEYUSAGE_NO_CERTSIGN
;