2 * Copyright 2007-2019 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright Nokia 2007-2018
4 * Copyright Siemens AG 2015-2019
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
11 * CRMF implementation by Martin Peylo, Miikka Viljanen, and David von Oheimb.
15 * This file contains the functions that handle the individual items inside
22 * The 0 functions use the supplied structure pointer directly in the parent and
23 * it will be freed up when the parent is freed.
25 * The 1 functions use a copy of the supplied structure pointer (or in some
26 * cases increases its link count) in the parent and so both should be freed up.
29 #include <openssl/asn1t.h>
33 /* explicit #includes not strictly needed since implied by the above: */
34 #include <openssl/crmf.h>
35 #include <openssl/err.h>
36 #include <openssl/evp.h>
39 * atyp = Attribute Type
41 * ctrlinf = "regCtrl" or "regInfo"
43 #define IMPLEMENT_CRMF_CTRL_FUNC(atyp, valt, ctrlinf) \
44 int OSSL_CRMF_MSG_set1_##ctrlinf##_##atyp(OSSL_CRMF_MSG *msg, \
47 OSSL_CRMF_ATTRIBUTETYPEANDVALUE *atav = NULL; \
49 if (msg == NULL || in == NULL) \
51 if ((atav = OSSL_CRMF_ATTRIBUTETYPEANDVALUE_new()) == NULL) \
53 if ((atav->type = OBJ_nid2obj(NID_id_##ctrlinf##_##atyp)) == NULL) \
55 if ((atav->value.atyp = valt##_dup(in)) == NULL) \
57 if (!OSSL_CRMF_MSG_push0_##ctrlinf(msg, atav)) \
61 OSSL_CRMF_ATTRIBUTETYPEANDVALUE_free(atav); \
67 * Pushes the given control attribute into the controls stack of a CertRequest
69 * returns 1 on success, 0 on error
71 static int OSSL_CRMF_MSG_push0_regCtrl(OSSL_CRMF_MSG
*crm
,
72 OSSL_CRMF_ATTRIBUTETYPEANDVALUE
*ctrl
)
76 if (crm
== NULL
|| crm
->certReq
== NULL
|| ctrl
== NULL
) {
77 CRMFerr(CRMF_F_OSSL_CRMF_MSG_PUSH0_REGCTRL
, CRMF_R_NULL_ARGUMENT
);
81 if (crm
->certReq
->controls
== NULL
) {
82 crm
->certReq
->controls
= sk_OSSL_CRMF_ATTRIBUTETYPEANDVALUE_new_null();
83 if (crm
->certReq
->controls
== NULL
)
87 if (!sk_OSSL_CRMF_ATTRIBUTETYPEANDVALUE_push(crm
->certReq
->controls
, ctrl
))
92 CRMFerr(CRMF_F_OSSL_CRMF_MSG_PUSH0_REGCTRL
, ERR_R_MALLOC_FAILURE
);
95 sk_OSSL_CRMF_ATTRIBUTETYPEANDVALUE_free(crm
->certReq
->controls
);
96 crm
->certReq
->controls
= NULL
;
101 /* id-regCtrl-regToken Control (section 6.1) */
102 IMPLEMENT_CRMF_CTRL_FUNC(regToken
, ASN1_STRING
, regCtrl
)
104 /* id-regCtrl-authenticator Control (section 6.2) */
105 #define ASN1_UTF8STRING_dup ASN1_STRING_dup
106 IMPLEMENT_CRMF_CTRL_FUNC(authenticator
, ASN1_UTF8STRING
, regCtrl
)
108 int OSSL_CRMF_MSG_set0_SinglePubInfo(OSSL_CRMF_SINGLEPUBINFO
*spi
,
109 int method
, GENERAL_NAME
*nm
)
112 || method
< OSSL_CRMF_PUB_METHOD_DONTCARE
113 || method
> OSSL_CRMF_PUB_METHOD_LDAP
) {
114 CRMFerr(CRMF_F_OSSL_CRMF_MSG_SET0_SINGLEPUBINFO
,
115 ERR_R_PASSED_INVALID_ARGUMENT
);
119 if (!ASN1_INTEGER_set(spi
->pubMethod
, method
))
121 GENERAL_NAME_free(spi
->pubLocation
);
122 spi
->pubLocation
= nm
;
126 int OSSL_CRMF_MSG_PKIPublicationInfo_push0_SinglePubInfo(
127 OSSL_CRMF_PKIPUBLICATIONINFO
*pi
,
128 OSSL_CRMF_SINGLEPUBINFO
*spi
)
130 if (pi
== NULL
|| spi
== NULL
) {
131 CRMFerr(CRMF_F_OSSL_CRMF_MSG_PKIPUBLICATIONINFO_PUSH0_SINGLEPUBINFO
,
132 CRMF_R_NULL_ARGUMENT
);
135 if (pi
->pubInfos
== NULL
)
136 pi
->pubInfos
= sk_OSSL_CRMF_SINGLEPUBINFO_new_null();
137 if (pi
->pubInfos
== NULL
)
140 if (!sk_OSSL_CRMF_SINGLEPUBINFO_push(pi
->pubInfos
, spi
))
145 CRMFerr(CRMF_F_OSSL_CRMF_MSG_PKIPUBLICATIONINFO_PUSH0_SINGLEPUBINFO
,
146 ERR_R_MALLOC_FAILURE
);
150 int OSSL_CRMF_MSG_set_PKIPublicationInfo_action(
151 OSSL_CRMF_PKIPUBLICATIONINFO
*pi
, int action
)
154 || action
< OSSL_CRMF_PUB_ACTION_DONTPUBLISH
155 || action
> OSSL_CRMF_PUB_ACTION_PLEASEPUBLISH
) {
156 CRMFerr(CRMF_F_OSSL_CRMF_MSG_SET_PKIPUBLICATIONINFO_ACTION
,
157 ERR_R_PASSED_INVALID_ARGUMENT
);
161 return ASN1_INTEGER_set(pi
->action
, action
);
164 /* id-regCtrl-pkiPublicationInfo Control (section 6.3) */
165 IMPLEMENT_CRMF_CTRL_FUNC(pkiPublicationInfo
, OSSL_CRMF_PKIPUBLICATIONINFO
,
168 /* id-regCtrl-oldCertID Control (section 6.5) from the given */
169 IMPLEMENT_CRMF_CTRL_FUNC(oldCertID
, OSSL_CRMF_CERTID
, regCtrl
)
171 OSSL_CRMF_CERTID
*OSSL_CRMF_CERTID_gen(const X509_NAME
*issuer
,
172 const ASN1_INTEGER
*serial
)
174 OSSL_CRMF_CERTID
*cid
= NULL
;
176 if (issuer
== NULL
|| serial
== NULL
) {
177 CRMFerr(CRMF_F_OSSL_CRMF_CERTID_GEN
, CRMF_R_NULL_ARGUMENT
);
181 if ((cid
= OSSL_CRMF_CERTID_new()) == NULL
)
184 if (!X509_NAME_set(&cid
->issuer
->d
.directoryName
, issuer
))
186 cid
->issuer
->type
= GEN_DIRNAME
;
188 ASN1_INTEGER_free(cid
->serialNumber
);
189 if ((cid
->serialNumber
= ASN1_INTEGER_dup(serial
)) == NULL
)
195 CRMFerr(CRMF_F_OSSL_CRMF_CERTID_GEN
, ERR_R_MALLOC_FAILURE
);
196 OSSL_CRMF_CERTID_free(cid
);
201 * id-regCtrl-protocolEncrKey Control (section 6.6)
203 * For some reason X509_PUBKEY_dup() is not implemented in OpenSSL X509
204 * TODO: check whether that should go elsewhere
206 static IMPLEMENT_ASN1_DUP_FUNCTION(X509_PUBKEY
)
207 IMPLEMENT_CRMF_CTRL_FUNC(protocolEncrKey
, X509_PUBKEY
, regCtrl
)
210 * Pushes the attribute given in regInfo in to the CertReqMsg->regInfo stack.
212 * returns 1 on success, 0 on error
214 static int OSSL_CRMF_MSG_push0_regInfo(OSSL_CRMF_MSG
*crm
,
215 OSSL_CRMF_ATTRIBUTETYPEANDVALUE
*ri
)
217 STACK_OF(OSSL_CRMF_ATTRIBUTETYPEANDVALUE
) *info
= NULL
;
219 if (crm
== NULL
|| ri
== NULL
) {
220 CRMFerr(CRMF_F_OSSL_CRMF_MSG_PUSH0_REGINFO
, CRMF_R_NULL_ARGUMENT
);
224 if (crm
->regInfo
== NULL
)
225 crm
->regInfo
= info
= sk_OSSL_CRMF_ATTRIBUTETYPEANDVALUE_new_null();
226 if (crm
->regInfo
== NULL
)
228 if (!sk_OSSL_CRMF_ATTRIBUTETYPEANDVALUE_push(crm
->regInfo
, ri
))
233 CRMFerr(CRMF_F_OSSL_CRMF_MSG_PUSH0_REGINFO
, ERR_R_MALLOC_FAILURE
);
236 sk_OSSL_CRMF_ATTRIBUTETYPEANDVALUE_free(info
);
240 /* id-regInfo-utf8Pairs to regInfo (section 7.1) */
241 IMPLEMENT_CRMF_CTRL_FUNC(utf8Pairs
, ASN1_UTF8STRING
, regInfo
)
243 /* id-regInfo-certReq to regInfo (section 7.2) */
244 IMPLEMENT_CRMF_CTRL_FUNC(certReq
, OSSL_CRMF_CERTREQUEST
, regInfo
)
247 /* retrieves the certificate template of crm */
248 OSSL_CRMF_CERTTEMPLATE
*OSSL_CRMF_MSG_get0_tmpl(const OSSL_CRMF_MSG
*crm
)
250 if (crm
== NULL
|| crm
->certReq
== NULL
) {
251 CRMFerr(CRMF_F_OSSL_CRMF_MSG_GET0_TMPL
, CRMF_R_NULL_ARGUMENT
);
254 return crm
->certReq
->certTemplate
;
258 int OSSL_CRMF_MSG_set_validity(OSSL_CRMF_MSG
*crm
, time_t from
, time_t to
)
260 OSSL_CRMF_OPTIONALVALIDITY
*vld
= NULL
;
261 ASN1_TIME
*from_asn
= NULL
;
262 ASN1_TIME
*to_asn
= NULL
;
263 OSSL_CRMF_CERTTEMPLATE
*tmpl
= OSSL_CRMF_MSG_get0_tmpl(crm
);
265 if (tmpl
== NULL
) { /* also crm == NULL implies this */
266 CRMFerr(CRMF_F_OSSL_CRMF_MSG_SET_VALIDITY
, CRMF_R_NULL_ARGUMENT
);
270 if (from
!= 0 && ((from_asn
= ASN1_TIME_set(NULL
, from
)) == NULL
))
272 if (to
!= 0 && ((to_asn
= ASN1_TIME_set(NULL
, to
)) == NULL
))
274 if ((vld
= OSSL_CRMF_OPTIONALVALIDITY_new()) == NULL
)
277 vld
->notBefore
= from_asn
;
278 vld
->notAfter
= to_asn
;
280 tmpl
->validity
= vld
;
284 CRMFerr(CRMF_F_OSSL_CRMF_MSG_SET_VALIDITY
, ERR_R_MALLOC_FAILURE
);
285 ASN1_TIME_free(from_asn
);
286 ASN1_TIME_free(to_asn
);
291 int OSSL_CRMF_MSG_set_certReqId(OSSL_CRMF_MSG
*crm
, int rid
)
293 if (crm
== NULL
|| crm
->certReq
== NULL
|| crm
->certReq
->certReqId
== NULL
) {
294 CRMFerr(CRMF_F_OSSL_CRMF_MSG_SET_CERTREQID
, CRMF_R_NULL_ARGUMENT
);
298 return ASN1_INTEGER_set(crm
->certReq
->certReqId
, rid
);
301 /* get ASN.1 encoded integer, return -1 on error */
302 static int crmf_asn1_get_int(const ASN1_INTEGER
*a
)
306 if (!ASN1_INTEGER_get_int64(&res
, a
)) {
307 CRMFerr(0, ASN1_R_INVALID_NUMBER
);
311 CRMFerr(0, ASN1_R_TOO_SMALL
);
315 CRMFerr(0, ASN1_R_TOO_LARGE
);
321 int OSSL_CRMF_MSG_get_certReqId(OSSL_CRMF_MSG
*crm
)
323 if (crm
== NULL
|| /* not really needed: */ crm
->certReq
== NULL
) {
324 CRMFerr(CRMF_F_OSSL_CRMF_MSG_GET_CERTREQID
, CRMF_R_NULL_ARGUMENT
);
327 return crmf_asn1_get_int(crm
->certReq
->certReqId
);
331 int OSSL_CRMF_MSG_set0_extensions(OSSL_CRMF_MSG
*crm
,
332 X509_EXTENSIONS
*exts
)
334 OSSL_CRMF_CERTTEMPLATE
*tmpl
= OSSL_CRMF_MSG_get0_tmpl(crm
);
336 if (tmpl
== NULL
) { /* also crm == NULL implies this */
337 CRMFerr(CRMF_F_OSSL_CRMF_MSG_SET0_EXTENSIONS
, CRMF_R_NULL_ARGUMENT
);
341 if (sk_X509_EXTENSION_num(exts
) == 0) {
342 sk_X509_EXTENSION_free(exts
);
343 exts
= NULL
; /* do not include empty extensions list */
346 sk_X509_EXTENSION_pop_free(tmpl
->extensions
, X509_EXTENSION_free
);
347 tmpl
->extensions
= exts
;
352 int OSSL_CRMF_MSG_push0_extension(OSSL_CRMF_MSG
*crm
,
353 const X509_EXTENSION
*ext
)
356 OSSL_CRMF_CERTTEMPLATE
*tmpl
= OSSL_CRMF_MSG_get0_tmpl(crm
);
358 if (tmpl
== NULL
|| ext
== NULL
) { /* also crm == NULL implies this */
359 CRMFerr(CRMF_F_OSSL_CRMF_MSG_PUSH0_EXTENSION
, CRMF_R_NULL_ARGUMENT
);
363 if (tmpl
->extensions
== NULL
) {
364 if ((tmpl
->extensions
= sk_X509_EXTENSION_new_null()) == NULL
)
369 if (!sk_X509_EXTENSION_push(tmpl
->extensions
, (X509_EXTENSION
*)ext
))
373 CRMFerr(CRMF_F_OSSL_CRMF_MSG_PUSH0_EXTENSION
, ERR_R_MALLOC_FAILURE
);
376 sk_X509_EXTENSION_free(tmpl
->extensions
);
377 tmpl
->extensions
= NULL
;
382 /* TODO: support cases 1+2 (besides case 3) defined in RFC 4211, section 4.1. */
383 static int CRMF_poposigningkey_init(OSSL_CRMF_POPOSIGNINGKEY
*ps
,
384 OSSL_CRMF_CERTREQUEST
*cr
,
385 EVP_PKEY
*pkey
, int dgst
)
390 unsigned char *crder
= NULL
, *sig
= NULL
;
393 const EVP_MD
*alg
= NULL
;
394 EVP_MD_CTX
*ctx
= NULL
;
397 if (ps
== NULL
|| cr
== NULL
|| pkey
== NULL
) {
398 CRMFerr(CRMF_F_CRMF_POPOSIGNINGKEY_INIT
, CRMF_R_NULL_ARGUMENT
);
402 /* OpenSSL defaults all bit strings to be encoded as ASN.1 NamedBitList */
403 ps
->signature
->flags
&= ~(ASN1_STRING_FLAG_BITS_LEFT
| 0x07);
404 ps
->signature
->flags
|= ASN1_STRING_FLAG_BITS_LEFT
;
406 len
= i2d_OSSL_CRMF_CERTREQUEST(cr
, &crder
);
407 if (len
< 0 || crder
== NULL
) {
408 CRMFerr(CRMF_F_CRMF_POPOSIGNINGKEY_INIT
, CRMF_R_ERROR
);
413 if (!OBJ_find_sigid_by_algs(&alg_nid
, dgst
, EVP_PKEY_id(pkey
))) {
414 CRMFerr(CRMF_F_CRMF_POPOSIGNINGKEY_INIT
,
415 CRMF_R_UNSUPPORTED_ALG_FOR_POPSIGNINGKEY
);
418 if (!OBJ_find_sigid_algs(alg_nid
, &md_nid
, NULL
)
419 || (alg
= EVP_get_digestbynid(md_nid
)) == NULL
) {
420 CRMFerr(CRMF_F_CRMF_POPOSIGNINGKEY_INIT
,
421 CRMF_R_UNSUPPORTED_ALG_FOR_POPSIGNINGKEY
);
424 if (!X509_ALGOR_set0(ps
->algorithmIdentifier
, OBJ_nid2obj(alg_nid
),
426 || (ctx
= EVP_MD_CTX_new()) == NULL
427 || EVP_DigestSignInit(ctx
, NULL
, alg
, NULL
, pkey
) <= 0
428 || EVP_DigestSignUpdate(ctx
, crder
, crlen
) <= 0
429 || EVP_DigestSignFinal(ctx
, NULL
, &siglen
) <= 0) {
430 CRMFerr(CRMF_F_CRMF_POPOSIGNINGKEY_INIT
, CRMF_R_ERROR
);
433 if ((sig
= OPENSSL_malloc(siglen
)) == NULL
) {
434 CRMFerr(CRMF_F_CRMF_POPOSIGNINGKEY_INIT
, ERR_R_MALLOC_FAILURE
);
437 if (EVP_DigestSignFinal(ctx
, sig
, &siglen
) <= 0
438 || !ASN1_BIT_STRING_set(ps
->signature
, sig
, siglen
)) {
439 CRMFerr(CRMF_F_CRMF_POPOSIGNINGKEY_INIT
, CRMF_R_ERROR
);
446 EVP_MD_CTX_free(ctx
);
452 int OSSL_CRMF_MSG_create_popo(OSSL_CRMF_MSG
*crm
, EVP_PKEY
*pkey
,
455 OSSL_CRMF_POPO
*pp
= NULL
;
456 ASN1_INTEGER
*tag
= NULL
;
458 if (crm
== NULL
|| (ppmtd
== OSSL_CRMF_POPO_SIGNATURE
&& pkey
== NULL
)) {
459 CRMFerr(CRMF_F_OSSL_CRMF_MSG_CREATE_POPO
, CRMF_R_NULL_ARGUMENT
);
463 if (ppmtd
== OSSL_CRMF_POPO_NONE
)
465 if ((pp
= OSSL_CRMF_POPO_new()) == NULL
)
470 case OSSL_CRMF_POPO_RAVERIFIED
:
471 if ((pp
->value
.raVerified
= ASN1_NULL_new()) == NULL
)
475 case OSSL_CRMF_POPO_SIGNATURE
:
477 OSSL_CRMF_POPOSIGNINGKEY
*ps
= OSSL_CRMF_POPOSIGNINGKEY_new();
479 || !CRMF_poposigningkey_init(ps
, crm
->certReq
, pkey
, dgst
)){
480 OSSL_CRMF_POPOSIGNINGKEY_free(ps
);
483 pp
->value
.signature
= ps
;
487 case OSSL_CRMF_POPO_KEYENC
:
488 if ((pp
->value
.keyEncipherment
= OSSL_CRMF_POPOPRIVKEY_new()) == NULL
)
490 tag
= ASN1_INTEGER_new();
491 pp
->value
.keyEncipherment
->type
=
492 OSSL_CRMF_POPOPRIVKEY_SUBSEQUENTMESSAGE
;
493 pp
->value
.keyEncipherment
->value
.subsequentMessage
= tag
;
495 || !ASN1_INTEGER_set(tag
, OSSL_CRMF_SUBSEQUENTMESSAGE_ENCRCERT
))
500 CRMFerr(CRMF_F_OSSL_CRMF_MSG_CREATE_POPO
,
501 CRMF_R_UNSUPPORTED_METHOD_FOR_CREATING_POPO
);
506 OSSL_CRMF_POPO_free(crm
->popo
);
511 CRMFerr(CRMF_F_OSSL_CRMF_MSG_CREATE_POPO
, ERR_R_MALLOC_FAILURE
);
513 OSSL_CRMF_POPO_free(pp
);
517 /* returns 0 for equal, -1 for a < b or error on a, 1 for a > b or error on b */
518 static int X509_PUBKEY_cmp(X509_PUBKEY
*a
, X509_PUBKEY
*b
)
520 X509_ALGOR
*algA
= NULL
, *algB
= NULL
;
525 if (a
== NULL
|| !X509_PUBKEY_get0_param(NULL
, NULL
, NULL
, &algA
, a
)
528 if (b
== NULL
|| !X509_PUBKEY_get0_param(NULL
, NULL
, NULL
, &algB
, b
)
531 if ((res
= X509_ALGOR_cmp(algA
, algB
)) != 0)
533 return EVP_PKEY_cmp(X509_PUBKEY_get0(a
), X509_PUBKEY_get0(b
));
536 /* verifies the Proof-of-Possession of the request with the given rid in reqs */
537 int OSSL_CRMF_MSGS_verify_popo(const OSSL_CRMF_MSGS
*reqs
,
538 int rid
, int acceptRAVerified
)
540 OSSL_CRMF_MSG
*req
= NULL
;
541 X509_PUBKEY
*pubkey
= NULL
;
542 OSSL_CRMF_POPOSIGNINGKEY
*sig
= NULL
;
545 || (req
= sk_OSSL_CRMF_MSG_value(reqs
, rid
)) == NULL
546 || req
->popo
== NULL
) {
547 CRMFerr(CRMF_F_OSSL_CRMF_MSGS_VERIFY_POPO
,
548 CRMF_R_NULL_ARGUMENT
);
552 switch (req
->popo
->type
) {
553 case OSSL_CRMF_POPO_RAVERIFIED
:
554 if (acceptRAVerified
)
557 case OSSL_CRMF_POPO_SIGNATURE
:
558 pubkey
= req
->certReq
->certTemplate
->publicKey
;
559 sig
= req
->popo
->value
.signature
;
560 if (sig
->poposkInput
!= NULL
) {
562 * According to RFC 4211: publicKey contains a copy of
563 * the public key from the certificate template. This MUST be
564 * exactly the same value as contained in the certificate template.
567 || sig
->poposkInput
->publicKey
== NULL
568 || X509_PUBKEY_cmp(pubkey
, sig
->poposkInput
->publicKey
)
570 ASN1_ITEM_rptr(OSSL_CRMF_POPOSIGNINGKEYINPUT
),
571 sig
->algorithmIdentifier
, sig
->signature
,
572 sig
->poposkInput
, X509_PUBKEY_get0(pubkey
)) < 1)
576 || req
->certReq
->certTemplate
->subject
== NULL
577 || ASN1_item_verify(ASN1_ITEM_rptr(OSSL_CRMF_CERTREQUEST
),
578 sig
->algorithmIdentifier
, sig
->signature
,
580 X509_PUBKEY_get0(pubkey
)) < 1)
584 case OSSL_CRMF_POPO_KEYENC
:
586 * TODO: when OSSL_CMP_certrep_new() supports encrypted certs,
587 * return 1 if the type of req->popo->value.keyEncipherment
588 * is OSSL_CRMF_POPOPRIVKEY_SUBSEQUENTMESSAGE and
589 * its value.subsequentMessage == OSSL_CRMF_SUBSEQUENTMESSAGE_ENCRCERT
591 case OSSL_CRMF_POPO_KEYAGREE
:
593 CRMFerr(CRMF_F_OSSL_CRMF_MSGS_VERIFY_POPO
,
594 CRMF_R_UNSUPPORTED_POPO_METHOD
);
597 CRMFerr(CRMF_F_OSSL_CRMF_MSGS_VERIFY_POPO
,
598 CRMF_R_UNSUPPORTED_POPO_NOT_ACCEPTED
);
602 /* retrieves the serialNumber of the given cert template or NULL on error */
603 ASN1_INTEGER
*OSSL_CRMF_CERTTEMPLATE_get0_serialNumber(OSSL_CRMF_CERTTEMPLATE
*tmpl
)
605 return tmpl
!= NULL
? tmpl
->serialNumber
: NULL
;
608 /* retrieves the issuer name of the given cert template or NULL on error */
609 X509_NAME
*OSSL_CRMF_CERTTEMPLATE_get0_issuer(OSSL_CRMF_CERTTEMPLATE
*tmpl
)
611 return tmpl
!= NULL
? tmpl
->issuer
: NULL
;
615 * fill in certificate template.
616 * Any value argument that is NULL will leave the respective field unchanged.
618 int OSSL_CRMF_CERTTEMPLATE_fill(OSSL_CRMF_CERTTEMPLATE
*tmpl
,
620 const X509_NAME
*subject
,
621 const X509_NAME
*issuer
,
622 const ASN1_INTEGER
*serial
)
625 CRMFerr(CRMF_F_OSSL_CRMF_CERTTEMPLATE_FILL
, CRMF_R_NULL_ARGUMENT
);
628 if (subject
!= NULL
&& !X509_NAME_set(&tmpl
->subject
, subject
))
630 if (issuer
!= NULL
&& !X509_NAME_set(&tmpl
->issuer
, issuer
))
632 if (serial
!= NULL
) {
633 ASN1_INTEGER_free(tmpl
->serialNumber
);
634 if ((tmpl
->serialNumber
= ASN1_INTEGER_dup(serial
)) == NULL
)
637 if (pubkey
!= NULL
&& !X509_PUBKEY_set(&tmpl
->publicKey
, pubkey
))
642 CRMFerr(CRMF_F_OSSL_CRMF_CERTTEMPLATE_FILL
, ERR_R_MALLOC_FAILURE
);
648 * Decrypts the certificate in the given encryptedValue
649 * this is needed for the indirect PoP method as in RFC 4210 section 5.2.8.2
651 * returns a pointer to the decrypted certificate
652 * returns NULL on error or if no certificate available
654 X509
*OSSL_CRMF_ENCRYPTEDVALUE_get1_encCert(OSSL_CRMF_ENCRYPTEDVALUE
*ecert
,
657 X509
*cert
= NULL
; /* decrypted certificate */
658 EVP_CIPHER_CTX
*evp_ctx
= NULL
; /* context for symmetric encryption */
659 unsigned char *ek
= NULL
; /* decrypted symmetric encryption key */
660 const EVP_CIPHER
*cipher
= NULL
; /* used cipher */
661 unsigned char *iv
= NULL
; /* initial vector for symmetric encryption */
662 unsigned char *outbuf
= NULL
; /* decryption output buffer */
663 const unsigned char *p
= NULL
; /* needed for decoding ASN1 */
664 int symmAlg
= 0; /* NIDs for symmetric algorithm */
666 EVP_PKEY_CTX
*pkctx
= NULL
; /* private key context */
668 if (ecert
== NULL
|| ecert
->symmAlg
== NULL
|| ecert
->encSymmKey
== NULL
669 || ecert
->encValue
== NULL
|| pkey
== NULL
) {
670 CRMFerr(CRMF_F_OSSL_CRMF_ENCRYPTEDVALUE_GET1_ENCCERT
,
671 CRMF_R_NULL_ARGUMENT
);
674 if ((symmAlg
= OBJ_obj2nid(ecert
->symmAlg
->algorithm
)) == 0) {
675 CRMFerr(CRMF_F_OSSL_CRMF_ENCRYPTEDVALUE_GET1_ENCCERT
,
676 CRMF_R_UNSUPPORTED_CIPHER
);
680 /* first the symmetric key needs to be decrypted */
681 pkctx
= EVP_PKEY_CTX_new(pkey
, NULL
);
682 if (pkctx
!= NULL
&& EVP_PKEY_decrypt_init(pkctx
)) {
683 ASN1_BIT_STRING
*encKey
= ecert
->encSymmKey
;
686 if (EVP_PKEY_decrypt(pkctx
, NULL
, &eksize
, encKey
->data
, encKey
->length
)
688 || (ek
= OPENSSL_malloc(eksize
)) == NULL
689 || EVP_PKEY_decrypt(pkctx
, ek
, &eksize
, encKey
->data
,
690 encKey
->length
) <= 0) {
691 CRMFerr(CRMF_F_OSSL_CRMF_ENCRYPTEDVALUE_GET1_ENCCERT
,
692 CRMF_R_ERROR_DECRYPTING_SYMMETRIC_KEY
);
699 /* select symmetric cipher based on algorithm given in message */
700 if ((cipher
= EVP_get_cipherbynid(symmAlg
)) == NULL
) {
701 CRMFerr(CRMF_F_OSSL_CRMF_ENCRYPTEDVALUE_GET1_ENCCERT
,
702 CRMF_R_UNSUPPORTED_CIPHER
);
705 if ((iv
= OPENSSL_malloc(EVP_CIPHER_iv_length(cipher
))) == NULL
)
707 if (ASN1_TYPE_get_octetstring(ecert
->symmAlg
->parameter
, iv
,
708 EVP_CIPHER_iv_length(cipher
))
709 != EVP_CIPHER_iv_length(cipher
)) {
710 CRMFerr(CRMF_F_OSSL_CRMF_ENCRYPTEDVALUE_GET1_ENCCERT
,
711 CRMF_R_MALFORMED_IV
);
716 * d2i_X509 changes the given pointer, so use p for decoding the message and
717 * keep the original pointer in outbuf so the memory can be freed later
719 if ((p
= outbuf
= OPENSSL_malloc(ecert
->encValue
->length
+
720 EVP_CIPHER_block_size(cipher
))) == NULL
721 || (evp_ctx
= EVP_CIPHER_CTX_new()) == NULL
)
723 EVP_CIPHER_CTX_set_padding(evp_ctx
, 0);
725 if (!EVP_DecryptInit(evp_ctx
, cipher
, ek
, iv
)
726 || !EVP_DecryptUpdate(evp_ctx
, outbuf
, &outlen
,
727 ecert
->encValue
->data
,
728 ecert
->encValue
->length
)
729 || !EVP_DecryptFinal(evp_ctx
, outbuf
+ outlen
, &n
)) {
730 CRMFerr(CRMF_F_OSSL_CRMF_ENCRYPTEDVALUE_GET1_ENCCERT
,
731 CRMF_R_ERROR_DECRYPTING_CERTIFICATE
);
736 /* convert decrypted certificate from DER to internal ASN.1 structure */
737 if ((cert
= d2i_X509(NULL
, &p
, outlen
)) == NULL
) {
738 CRMFerr(CRMF_F_OSSL_CRMF_ENCRYPTEDVALUE_GET1_ENCCERT
,
739 CRMF_R_ERROR_DECODING_CERTIFICATE
);
744 CRMFerr(CRMF_F_OSSL_CRMF_ENCRYPTEDVALUE_GET1_ENCCERT
, ERR_R_MALLOC_FAILURE
);
746 EVP_PKEY_CTX_free(pkctx
);
747 OPENSSL_free(outbuf
);
748 EVP_CIPHER_CTX_free(evp_ctx
);