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openssl/crypto/cmp/cmp_msg.c
Dr. David von Oheimb 3dbc5156b0 chunk 6 of CMP contribution to OpenSSL 
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10297)
2019-12-12 10:57:25 +00:00

997 lines
29 KiB
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/*
* Copyright 2007-2019 The OpenSSL Project Authors. All Rights Reserved.
* Copyright Nokia 2007-2019
* Copyright Siemens AG 2015-2019
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/* CMP functions for PKIMessage construction */
#include "cmp_local.h"
/* explicit #includes not strictly needed since implied by the above: */
#include <openssl/asn1t.h>
#include <openssl/cmp.h>
#include <openssl/crmf.h>
#include <openssl/err.h>
#include <openssl/x509.h>
OSSL_CMP_PKIHEADER *OSSL_CMP_MSG_get0_header(const OSSL_CMP_MSG *msg)
{
if (msg == NULL) {
CMPerr(0, CMP_R_NULL_ARGUMENT);
return NULL;
}
return msg->header;
}
const char *ossl_cmp_bodytype_to_string(int type)
{
static const char *type_names[] = {
"IR", "IP", "CR", "CP", "P10CR",
"POPDECC", "POPDECR", "KUR", "KUP",
"KRR", "KRP", "RR", "RP", "CCR", "CCP",
"CKUANN", "CANN", "RANN", "CRLANN", "PKICONF", "NESTED",
"GENM", "GENP", "ERROR", "CERTCONF", "POLLREQ", "POLLREP",
};
if (type < 0 || type > OSSL_CMP_PKIBODY_TYPE_MAX)
return "illegal body type";
return type_names[type];
}
int ossl_cmp_msg_set_bodytype(OSSL_CMP_MSG *msg, int type)
{
if (!ossl_assert(msg != NULL && msg->body != NULL))
return 0;
msg->body->type = type;
return 1;
}
int ossl_cmp_msg_get_bodytype(const OSSL_CMP_MSG *msg)
{
if (!ossl_assert(msg != NULL && msg->body != NULL))
return -1;
return msg->body->type;
}
/* Add an extension to the referenced extension stack, which may be NULL */
static int add1_extension(X509_EXTENSIONS **pexts, int nid, int crit, void *ex)
{
X509_EXTENSION *ext;
int res;
if (!ossl_assert(pexts != NULL)) /* pointer to var must not be NULL */
return 0;
if ((ext = X509V3_EXT_i2d(nid, crit, ex)) == NULL)
return 0;
res = X509v3_add_ext(pexts, ext, 0) != NULL;
X509_EXTENSION_free(ext);
return res;
}
/* Add a CRL revocation reason code to extension stack, which may be NULL */
static int add_crl_reason_extension(X509_EXTENSIONS **pexts, int reason_code)
{
ASN1_ENUMERATED *val = ASN1_ENUMERATED_new();
int res = 0;
if (val != NULL && ASN1_ENUMERATED_set(val, reason_code))
res = add1_extension(pexts, NID_crl_reason, 0 /* non-critical */, val);
ASN1_ENUMERATED_free(val);
return res;
}
OSSL_CMP_MSG *ossl_cmp_msg_create(OSSL_CMP_CTX *ctx, int bodytype)
{
OSSL_CMP_MSG *msg = NULL;
if (!ossl_assert(ctx != NULL))
return NULL;
if ((msg = OSSL_CMP_MSG_new()) == NULL)
return NULL;
if (!ossl_cmp_hdr_init(ctx, msg->header)
|| !ossl_cmp_msg_set_bodytype(msg, bodytype))
goto err;
if (ctx->geninfo_ITAVs != NULL
&& !ossl_cmp_hdr_generalInfo_push1_items(msg->header,
ctx->geninfo_ITAVs))
goto err;
switch (bodytype) {
case OSSL_CMP_PKIBODY_IR:
case OSSL_CMP_PKIBODY_CR:
case OSSL_CMP_PKIBODY_KUR:
if ((msg->body->value.ir = OSSL_CRMF_MSGS_new()) == NULL)
goto err;
return msg;
case OSSL_CMP_PKIBODY_P10CR:
if (ctx->p10CSR == NULL) {
CMPerr(0, CMP_R_ERROR_CREATING_P10CR);
goto err;
}
if ((msg->body->value.p10cr = X509_REQ_dup(ctx->p10CSR)) == NULL)
goto err;
return msg;
case OSSL_CMP_PKIBODY_IP:
case OSSL_CMP_PKIBODY_CP:
case OSSL_CMP_PKIBODY_KUP:
if ((msg->body->value.ip = OSSL_CMP_CERTREPMESSAGE_new()) == NULL)
goto err;
return msg;
case OSSL_CMP_PKIBODY_RR:
if ((msg->body->value.rr = sk_OSSL_CMP_REVDETAILS_new_null()) == NULL)
goto err;
return msg;
case OSSL_CMP_PKIBODY_RP:
if ((msg->body->value.rp = OSSL_CMP_REVREPCONTENT_new()) == NULL)
goto err;
return msg;
case OSSL_CMP_PKIBODY_CERTCONF:
if ((msg->body->value.certConf =
sk_OSSL_CMP_CERTSTATUS_new_null()) == NULL)
goto err;
return msg;
case OSSL_CMP_PKIBODY_PKICONF:
if ((msg->body->value.pkiconf = ASN1_TYPE_new()) == NULL)
goto err;
ASN1_TYPE_set(msg->body->value.pkiconf, V_ASN1_NULL, NULL);
return msg;
case OSSL_CMP_PKIBODY_POLLREQ:
if ((msg->body->value.pollReq = sk_OSSL_CMP_POLLREQ_new_null()) == NULL)
goto err;
return msg;
case OSSL_CMP_PKIBODY_POLLREP:
if ((msg->body->value.pollRep = sk_OSSL_CMP_POLLREP_new_null()) == NULL)
goto err;
return msg;
case OSSL_CMP_PKIBODY_GENM:
case OSSL_CMP_PKIBODY_GENP:
if ((msg->body->value.genm = sk_OSSL_CMP_ITAV_new_null()) == NULL)
goto err;
return msg;
case OSSL_CMP_PKIBODY_ERROR:
if ((msg->body->value.error = OSSL_CMP_ERRORMSGCONTENT_new()) == NULL)
goto err;
return msg;
default:
CMPerr(0, CMP_R_UNEXPECTED_PKIBODY);
goto err;
}
err:
OSSL_CMP_MSG_free(msg);
return NULL;
}
#define HAS_SAN(ctx) \
(sk_GENERAL_NAME_num((ctx)->subjectAltNames) > 0 \
|| OSSL_CMP_CTX_reqExtensions_have_SAN(ctx) == 1)
static X509_NAME *determine_subj(OSSL_CMP_CTX *ctx, X509 *refcert,
int bodytype)
{
if (ctx->subjectName != NULL)
return ctx->subjectName;
if (refcert != NULL
&& (bodytype == OSSL_CMP_PKIBODY_KUR || !HAS_SAN(ctx)))
/*
* For KUR, copy subjectName from reference certificate.
* For IR or CR, do the same only if there is no subjectAltName.
*/
return X509_get_subject_name(refcert);
return NULL;
}
/*
* Create CRMF certificate request message for IR/CR/KUR
* returns a pointer to the OSSL_CRMF_MSG on success, NULL on error
*/
static OSSL_CRMF_MSG *crm_new(OSSL_CMP_CTX *ctx, int bodytype,
int rid, EVP_PKEY *rkey)
{
OSSL_CRMF_MSG *crm = NULL;
X509 *refcert = ctx->oldCert != NULL ? ctx->oldCert : ctx->clCert;
/* refcert defaults to current client cert */
STACK_OF(GENERAL_NAME) *default_sans = NULL;
X509_NAME *subject = determine_subj(ctx, refcert, bodytype);
int crit = ctx->setSubjectAltNameCritical || subject == NULL;
/* RFC5280: subjectAltName MUST be critical if subject is null */
X509_EXTENSIONS *exts = NULL;
if (rkey == NULL
|| (bodytype == OSSL_CMP_PKIBODY_KUR && refcert == NULL)) {
CMPerr(0, CMP_R_INVALID_ARGS);
return NULL;
}
if ((crm = OSSL_CRMF_MSG_new()) == NULL)
return NULL;
if (!OSSL_CRMF_MSG_set_certReqId(crm, rid)
/*
* fill certTemplate, corresponding to CertificationRequestInfo
* of PKCS#10. The rkey param cannot be NULL so far -
* it could be NULL if centralized key creation was supported
*/
|| !OSSL_CRMF_CERTTEMPLATE_fill(OSSL_CRMF_MSG_get0_tmpl(crm), rkey,
subject, ctx->issuer,
NULL/* serial */))
goto err;
if (ctx->days != 0) {
time_t notBefore, notAfter;
notBefore = time(NULL);
notAfter = notBefore + 60 * 60 * 24 * ctx->days;
if (!OSSL_CRMF_MSG_set_validity(crm, notBefore, notAfter))
goto err;
}
/* extensions */
if (refcert != NULL && !ctx->SubjectAltName_nodefault)
default_sans = X509V3_get_d2i(X509_get0_extensions(refcert),
NID_subject_alt_name, NULL, NULL);
/* exts are copied from ctx to allow reuse */
if (ctx->reqExtensions != NULL) {
exts = sk_X509_EXTENSION_deep_copy(ctx->reqExtensions,
X509_EXTENSION_dup,
X509_EXTENSION_free);
if (exts == NULL)
goto err;
}
if (sk_GENERAL_NAME_num(ctx->subjectAltNames) > 0
&& !add1_extension(&exts, NID_subject_alt_name,
crit, ctx->subjectAltNames))
goto err;
if (!HAS_SAN(ctx) && default_sans != NULL
&& !add1_extension(&exts, NID_subject_alt_name, crit, default_sans))
goto err;
if (ctx->policies != NULL
&& !add1_extension(&exts, NID_certificate_policies,
ctx->setPoliciesCritical, ctx->policies))
goto err;
if (!OSSL_CRMF_MSG_set0_extensions(crm, exts))
goto err;
exts = NULL;
/* end fill certTemplate, now set any controls */
/* for KUR, set OldCertId according to D.6 */
if (bodytype == OSSL_CMP_PKIBODY_KUR) {
OSSL_CRMF_CERTID *cid =
OSSL_CRMF_CERTID_gen(X509_get_issuer_name(refcert),
X509_get_serialNumber(refcert));
int ret;
if (cid == NULL)
goto err;
ret = OSSL_CRMF_MSG_set1_regCtrl_oldCertID(crm, cid);
OSSL_CRMF_CERTID_free(cid);
if (ret == 0)
goto err;
}
goto end;
err:
OSSL_CRMF_MSG_free(crm);
crm = NULL;
end:
sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
sk_GENERAL_NAME_pop_free(default_sans, GENERAL_NAME_free);
return crm;
}
OSSL_CMP_MSG *ossl_cmp_certReq_new(OSSL_CMP_CTX *ctx, int type, int err_code)
{
EVP_PKEY *rkey;
EVP_PKEY *privkey;
OSSL_CMP_MSG *msg;
OSSL_CRMF_MSG *crm = NULL;
if (!ossl_assert(ctx != NULL))
return NULL;
rkey = OSSL_CMP_CTX_get0_newPkey(ctx, 0);
if (rkey == NULL)
return NULL;
privkey = OSSL_CMP_CTX_get0_newPkey(ctx, 1);
if (type != OSSL_CMP_PKIBODY_IR && type != OSSL_CMP_PKIBODY_CR
&& type != OSSL_CMP_PKIBODY_KUR && type != OSSL_CMP_PKIBODY_P10CR) {
CMPerr(0, CMP_R_INVALID_ARGS);
return NULL;
}
if ((msg = ossl_cmp_msg_create(ctx, type)) == NULL)
goto err;
/* header */
if (ctx->implicitConfirm && !ossl_cmp_hdr_set_implicitConfirm(msg->header))
goto err;
/* body */
/* For P10CR the content has already been set in OSSL_CMP_MSG_create */
if (type != OSSL_CMP_PKIBODY_P10CR) {
if (ctx->popoMethod == OSSL_CRMF_POPO_SIGNATURE && privkey == NULL) {
CMPerr(0, CMP_R_MISSING_PRIVATE_KEY);
goto err;
}
if ((crm = crm_new(ctx, type, OSSL_CMP_CERTREQID, rkey)) == NULL
|| !OSSL_CRMF_MSG_create_popo(crm, privkey, ctx->digest,
ctx->popoMethod)
/* value.ir is same for cr and kur */
|| !sk_OSSL_CRMF_MSG_push(msg->body->value.ir, crm))
goto err;
crm = NULL;
/* TODO: here optional 2nd certreqmsg could be pushed to the stack */
}
if (!ossl_cmp_msg_protect(ctx, msg))
goto err;
return msg;
err:
CMPerr(0, err_code);
OSSL_CRMF_MSG_free(crm);
OSSL_CMP_MSG_free(msg);
return NULL;
}
OSSL_CMP_MSG *ossl_cmp_certRep_new(OSSL_CMP_CTX *ctx, int bodytype,
int certReqId, OSSL_CMP_PKISI *si,
X509 *cert, STACK_OF(X509) *chain,
STACK_OF(X509) *caPubs, int encrypted,
int unprotectedErrors)
{
OSSL_CMP_MSG *msg = NULL;
OSSL_CMP_CERTREPMESSAGE *repMsg = NULL;
OSSL_CMP_CERTRESPONSE *resp = NULL;
int status = -1;
if (!ossl_assert(ctx != NULL && si != NULL))
return NULL;
if ((msg = ossl_cmp_msg_create(ctx, bodytype)) == NULL)
goto err;
repMsg = msg->body->value.ip; /* value.ip is same for cp and kup */
/* header */
if (ctx->implicitConfirm && !ossl_cmp_hdr_set_implicitConfirm(msg->header))
goto err;
/* body */
if ((resp = OSSL_CMP_CERTRESPONSE_new()) == NULL)
goto err;
OSSL_CMP_PKISI_free(resp->status);
if ((resp->status = OSSL_CMP_PKISI_dup(si)) == NULL
|| !ASN1_INTEGER_set(resp->certReqId, certReqId))
goto err;
status = ossl_cmp_pkisi_get_pkistatus(resp->status);
if (status != OSSL_CMP_PKISTATUS_rejection
&& status != OSSL_CMP_PKISTATUS_waiting && cert != NULL) {
if (encrypted) {
CMPerr(0, CMP_R_INVALID_ARGS);
goto err;
}
if ((resp->certifiedKeyPair = OSSL_CMP_CERTIFIEDKEYPAIR_new())
== NULL)
goto err;
resp->certifiedKeyPair->certOrEncCert->type =
OSSL_CMP_CERTORENCCERT_CERTIFICATE;
if (!X509_up_ref(cert))
goto err;
resp->certifiedKeyPair->certOrEncCert->value.certificate = cert;
}
if (!sk_OSSL_CMP_CERTRESPONSE_push(repMsg->response, resp))
goto err;
resp = NULL;
/* TODO: here optional 2nd certrep could be pushed to the stack */
if (bodytype == OSSL_CMP_PKIBODY_IP && caPubs != NULL
&& (repMsg->caPubs = X509_chain_up_ref(caPubs)) == NULL)
goto err;
if (chain != NULL
&& !ossl_cmp_sk_X509_add1_certs(msg->extraCerts, chain, 0, 1, 0))
goto err;
if (!unprotectedErrors
|| ossl_cmp_pkisi_get_pkistatus(si) != OSSL_CMP_PKISTATUS_rejection)
if (!ossl_cmp_msg_protect(ctx, msg))
goto err;
return msg;
err:
CMPerr(0, CMP_R_ERROR_CREATING_CERTREP);
OSSL_CMP_CERTRESPONSE_free(resp);
OSSL_CMP_MSG_free(msg);
return NULL;
}
OSSL_CMP_MSG *ossl_cmp_rr_new(OSSL_CMP_CTX *ctx)
{
OSSL_CMP_MSG *msg = NULL;
OSSL_CMP_REVDETAILS *rd;
if (!ossl_assert(ctx != NULL && ctx->oldCert != NULL))
return NULL;
if ((rd = OSSL_CMP_REVDETAILS_new()) == NULL)
goto err;
/* Fill the template from the contents of the certificate to be revoked */
if (!OSSL_CRMF_CERTTEMPLATE_fill(rd->certDetails,
NULL/* pubkey would be redundant */,
NULL/* subject would be redundant */,
X509_get_issuer_name(ctx->oldCert),
X509_get_serialNumber(ctx->oldCert)))
goto err;
/* revocation reason code is optional */
if (ctx->revocationReason != CRL_REASON_NONE
&& !add_crl_reason_extension(&rd->crlEntryDetails,
ctx->revocationReason))
goto err;
if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_RR)) == NULL)
goto err;
if (!sk_OSSL_CMP_REVDETAILS_push(msg->body->value.rr, rd))
goto err;
rd = NULL;
/*
* TODO: the Revocation Passphrase according to section 5.3.19.9 could be
* set here if set in ctx
*/
if (!ossl_cmp_msg_protect(ctx, msg))
goto err;
return msg;
err:
CMPerr(0, CMP_R_ERROR_CREATING_RR);
OSSL_CMP_MSG_free(msg);
OSSL_CMP_REVDETAILS_free(rd);
return NULL;
}
OSSL_CMP_MSG *ossl_cmp_rp_new(OSSL_CMP_CTX *ctx, OSSL_CMP_PKISI *si,
OSSL_CRMF_CERTID *cid, int unprot_err)
{
OSSL_CMP_REVREPCONTENT *rep = NULL;
OSSL_CMP_PKISI *si1 = NULL;
OSSL_CRMF_CERTID *cid_copy = NULL;
OSSL_CMP_MSG *msg = NULL;
if (!ossl_assert(ctx != NULL && si != NULL && cid != NULL))
return NULL;
if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_RP)) == NULL)
goto err;
rep = msg->body->value.rp;
if ((si1 = OSSL_CMP_PKISI_dup(si)) == NULL)
goto err;
if (!sk_OSSL_CMP_PKISI_push(rep->status, si1)) {
OSSL_CMP_PKISI_free(si1);
goto err;
}
if ((rep->revCerts = sk_OSSL_CRMF_CERTID_new_null()) == NULL)
goto err;
if ((cid_copy = OSSL_CRMF_CERTID_dup(cid)) == NULL)
goto err;
if (!sk_OSSL_CRMF_CERTID_push(rep->revCerts, cid_copy)) {
OSSL_CRMF_CERTID_free(cid_copy);
goto err;
}
if (!unprot_err
|| ossl_cmp_pkisi_get_pkistatus(si) != OSSL_CMP_PKISTATUS_rejection)
if (!ossl_cmp_msg_protect(ctx, msg))
goto err;
return msg;
err:
CMPerr(0, CMP_R_ERROR_CREATING_RP);
OSSL_CMP_MSG_free(msg);
return NULL;
}
OSSL_CMP_MSG *ossl_cmp_pkiconf_new(OSSL_CMP_CTX *ctx)
{
OSSL_CMP_MSG *msg;
if (!ossl_assert(ctx != NULL))
return NULL;
if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_PKICONF)) == NULL)
goto err;
if (ossl_cmp_msg_protect(ctx, msg))
return msg;
err:
CMPerr(0, CMP_R_ERROR_CREATING_PKICONF);
OSSL_CMP_MSG_free(msg);
return NULL;
}
int ossl_cmp_msg_gen_push0_ITAV(OSSL_CMP_MSG *msg, OSSL_CMP_ITAV *itav)
{
int bodytype;
if (!ossl_assert(msg != NULL && itav != NULL))
return 0;
bodytype = ossl_cmp_msg_get_bodytype(msg);
if (bodytype != OSSL_CMP_PKIBODY_GENM
&& bodytype != OSSL_CMP_PKIBODY_GENP) {
CMPerr(0, CMP_R_INVALID_ARGS);
return 0;
}
/* value.genp has the same structure, so this works for genp as well */
return OSSL_CMP_ITAV_push0_stack_item(&msg->body->value.genm, itav);
}
int ossl_cmp_msg_gen_push1_ITAVs(OSSL_CMP_MSG *msg,
STACK_OF(OSSL_CMP_ITAV) *itavs)
{
int i;
OSSL_CMP_ITAV *itav = NULL;
if (!ossl_assert(msg != NULL))
return 0;
for (i = 0; i < sk_OSSL_CMP_ITAV_num(itavs); i++) {
if ((itav = OSSL_CMP_ITAV_dup(sk_OSSL_CMP_ITAV_value(itavs,i))) == NULL)
return 0;
if (!ossl_cmp_msg_gen_push0_ITAV(msg, itav)) {
OSSL_CMP_ITAV_free(itav);
return 0;
}
}
return 1;
}
/*
* Creates a new General Message/Response with an empty itav stack
* returns a pointer to the PKIMessage on success, NULL on error
*/
static OSSL_CMP_MSG *gen_new(OSSL_CMP_CTX *ctx, int body_type, int err_code)
{
OSSL_CMP_MSG *msg = NULL;
if (!ossl_assert(ctx != NULL))
return NULL;
if ((msg = ossl_cmp_msg_create(ctx, body_type)) == NULL)
return NULL;
if (ctx->genm_ITAVs != NULL
&& !ossl_cmp_msg_gen_push1_ITAVs(msg, ctx->genm_ITAVs))
goto err;
if (!ossl_cmp_msg_protect(ctx, msg))
goto err;
return msg;
err:
CMPerr(0, err_code);
OSSL_CMP_MSG_free(msg);
return NULL;
}
OSSL_CMP_MSG *ossl_cmp_genm_new(OSSL_CMP_CTX *ctx)
{
return gen_new(ctx, OSSL_CMP_PKIBODY_GENM, CMP_R_ERROR_CREATING_GENM);
}
OSSL_CMP_MSG *ossl_cmp_genp_new(OSSL_CMP_CTX *ctx)
{
return gen_new(ctx, OSSL_CMP_PKIBODY_GENP, CMP_R_ERROR_CREATING_GENP);
}
OSSL_CMP_MSG *ossl_cmp_error_new(OSSL_CMP_CTX *ctx, OSSL_CMP_PKISI *si,
int errorCode,
OSSL_CMP_PKIFREETEXT *errorDetails,
int unprotected)
{
OSSL_CMP_MSG *msg = NULL;
if (!ossl_assert(ctx != NULL && si != NULL))
return NULL;
if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_ERROR)) == NULL)
goto err;
OSSL_CMP_PKISI_free(msg->body->value.error->pKIStatusInfo);
if ((msg->body->value.error->pKIStatusInfo = OSSL_CMP_PKISI_dup(si))
== NULL)
goto err;
if (errorCode >= 0) {
if ((msg->body->value.error->errorCode = ASN1_INTEGER_new()) == NULL)
goto err;
if (!ASN1_INTEGER_set(msg->body->value.error->errorCode, errorCode))
goto err;
}
if (errorDetails != NULL)
if ((msg->body->value.error->errorDetails =
sk_ASN1_UTF8STRING_deep_copy(errorDetails, ASN1_STRING_dup,
ASN1_STRING_free)) == NULL)
goto err;
if (!unprotected && !ossl_cmp_msg_protect(ctx, msg))
goto err;
return msg;
err:
CMPerr(0, CMP_R_ERROR_CREATING_ERROR);
OSSL_CMP_MSG_free(msg);
return NULL;
}
/*
* OSSL_CMP_CERTSTATUS_set_certHash() calculates a hash of the certificate,
* using the same hash algorithm as is used to create and verify the
* certificate signature, and places the hash into the certHash field of a
* OSSL_CMP_CERTSTATUS structure. This is used in the certConf message,
* for example, to confirm that the certificate was received successfully.
*/
int ossl_cmp_certstatus_set_certHash(OSSL_CMP_CERTSTATUS *certStatus,
const X509 *cert)
{
unsigned int len;
unsigned char hash[EVP_MAX_MD_SIZE];
int md_NID;
const EVP_MD *md = NULL;
if (!ossl_assert(certStatus != NULL && cert != NULL))
return 0;
/*-
* select hash algorithm, as stated in Appendix F. Compilable ASN.1 defs:
* the hash of the certificate, using the same hash algorithm
* as is used to create and verify the certificate signature
*/
if (OBJ_find_sigid_algs(X509_get_signature_nid(cert), &md_NID, NULL)
&& (md = EVP_get_digestbynid(md_NID)) != NULL) {
if (!X509_digest(cert, md, hash, &len))
goto err;
if (!ossl_cmp_asn1_octet_string_set1_bytes(&certStatus->certHash, hash,
len))
goto err;
} else {
CMPerr(0, CMP_R_UNSUPPORTED_ALGORITHM);
return 0;
}
return 1;
err:
CMPerr(0, CMP_R_ERROR_SETTING_CERTHASH);
return 0;
}
/*
* TODO: handle potential 2nd certificate when signing and encrypting
* certificates have been requested/received
*/
OSSL_CMP_MSG *ossl_cmp_certConf_new(OSSL_CMP_CTX *ctx, int fail_info,
const char *text)
{
OSSL_CMP_MSG *msg = NULL;
OSSL_CMP_CERTSTATUS *certStatus = NULL;
OSSL_CMP_PKISI *sinfo;
if (!ossl_assert(ctx != NULL && ctx->newCert != NULL))
return NULL;
if ((unsigned)fail_info > OSSL_CMP_PKIFAILUREINFO_MAX_BIT_PATTERN) {
CMPerr(0, CMP_R_FAIL_INFO_OUT_OF_RANGE);
return NULL;
}
if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_CERTCONF)) == NULL)
goto err;
if ((certStatus = OSSL_CMP_CERTSTATUS_new()) == NULL)
goto err;
/* consume certStatus into msg right away so it gets deallocated with msg */
if (!sk_OSSL_CMP_CERTSTATUS_push(msg->body->value.certConf, certStatus))
goto err;
/* set the ID of the certReq */
if (!ASN1_INTEGER_set(certStatus->certReqId, OSSL_CMP_CERTREQID))
goto err;
/*
* the hash of the certificate, using the same hash algorithm
* as is used to create and verify the certificate signature
*/
if (!ossl_cmp_certstatus_set_certHash(certStatus, ctx->newCert))
goto err;
/*
* For any particular CertStatus, omission of the statusInfo field
* indicates ACCEPTANCE of the specified certificate. Alternatively,
* explicit status details (with respect to acceptance or rejection) MAY
* be provided in the statusInfo field, perhaps for auditing purposes at
* the CA/RA.
*/
sinfo = fail_info != 0 ?
ossl_cmp_statusinfo_new(OSSL_CMP_PKISTATUS_rejection, fail_info, text) :
ossl_cmp_statusinfo_new(OSSL_CMP_PKISTATUS_accepted, 0, text);
if (sinfo == NULL)
goto err;
certStatus->statusInfo = sinfo;
if (!ossl_cmp_msg_protect(ctx, msg))
goto err;
return msg;
err:
CMPerr(0, CMP_R_ERROR_CREATING_CERTCONF);
OSSL_CMP_MSG_free(msg);
return NULL;
}
OSSL_CMP_MSG *ossl_cmp_pollReq_new(OSSL_CMP_CTX *ctx, int crid)
{
OSSL_CMP_MSG *msg = NULL;
OSSL_CMP_POLLREQ *preq = NULL;
if (!ossl_assert(ctx != NULL))
return NULL;
if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_POLLREQ)) == NULL)
goto err;
/* TODO: support multiple cert request IDs to poll */
if ((preq = OSSL_CMP_POLLREQ_new()) == NULL
|| !ASN1_INTEGER_set(preq->certReqId, crid)
|| !sk_OSSL_CMP_POLLREQ_push(msg->body->value.pollReq, preq))
goto err;
preq = NULL;
if (!ossl_cmp_msg_protect(ctx, msg))
goto err;
return msg;
err:
CMPerr(0, CMP_R_ERROR_CREATING_POLLREQ);
OSSL_CMP_POLLREQ_free(preq);
OSSL_CMP_MSG_free(msg);
return NULL;
}
OSSL_CMP_MSG *ossl_cmp_pollRep_new(OSSL_CMP_CTX *ctx, int crid,
int64_t poll_after)
{
OSSL_CMP_MSG *msg;
OSSL_CMP_POLLREP *prep;
if (!ossl_assert(ctx != NULL))
return NULL;
if ((msg = ossl_cmp_msg_create(ctx, OSSL_CMP_PKIBODY_POLLREP)) == NULL)
goto err;
if ((prep = OSSL_CMP_POLLREP_new()) == NULL)
goto err;
if (!sk_OSSL_CMP_POLLREP_push(msg->body->value.pollRep, prep))
goto err;
if (!ASN1_INTEGER_set(prep->certReqId, crid))
goto err;
if (!ASN1_INTEGER_set_int64(prep->checkAfter, poll_after))
goto err;
if (!ossl_cmp_msg_protect(ctx, msg))
goto err;
return msg;
err:
CMPerr(0, CMP_R_ERROR_CREATING_POLLREP);
OSSL_CMP_MSG_free(msg);
return NULL;
}
/*-
* returns the status field of the RevRepContent with the given
* request/sequence id inside a revocation response.
* RevRepContent has the revocation statuses in same order as they were sent in
* RevReqContent.
* returns NULL on error
*/
OSSL_CMP_PKISI *
ossl_cmp_revrepcontent_get_pkistatusinfo(OSSL_CMP_REVREPCONTENT *rrep, int rsid)
{
OSSL_CMP_PKISI *status;
if (!ossl_assert(rrep != NULL))
return NULL;
if ((status = sk_OSSL_CMP_PKISI_value(rrep->status, rsid)) != NULL)
return status;
CMPerr(0, CMP_R_PKISTATUSINFO_NOT_FOUND);
return NULL;
}
/*
* returns the CertId field in the revCerts part of the RevRepContent
* with the given request/sequence id inside a revocation response.
* RevRepContent has the CertIds in same order as they were sent in
* RevReqContent.
* returns NULL on error
*/
OSSL_CRMF_CERTID *
ossl_cmp_revrepcontent_get_CertId(OSSL_CMP_REVREPCONTENT *rrep, int rsid)
{
OSSL_CRMF_CERTID *cid = NULL;
if (!ossl_assert(rrep != NULL))
return NULL;
if ((cid = sk_OSSL_CRMF_CERTID_value(rrep->revCerts, rsid)) != NULL)
return cid;
CMPerr(0, CMP_R_CERTID_NOT_FOUND);
return NULL;
}
static int suitable_rid(const ASN1_INTEGER *certReqId, int rid)
{
int trid;
if (rid == -1)
return 1;
trid = ossl_cmp_asn1_get_int(certReqId);
if (trid == -1) {
CMPerr(0, CMP_R_BAD_REQUEST_ID);
return 0;
}
return rid == trid;
}
static void add_expected_rid(int rid)
{
char str[DECIMAL_SIZE(rid) + 1];
BIO_snprintf(str, sizeof(str), "%d", rid);
ERR_add_error_data(2, "expected certReqId = ", str);
}
/*
* returns a pointer to the PollResponse with the given CertReqId
* (or the first one in case -1) inside a PollRepContent
* returns NULL on error or if no suitable PollResponse available
*/
OSSL_CMP_POLLREP *
ossl_cmp_pollrepcontent_get0_pollrep(const OSSL_CMP_POLLREPCONTENT *prc,
int rid)
{
OSSL_CMP_POLLREP *pollRep = NULL;
int i;
if (!ossl_assert(prc != NULL))
return NULL;
for (i = 0; i < sk_OSSL_CMP_POLLREP_num(prc); i++) {
pollRep = sk_OSSL_CMP_POLLREP_value(prc, i);
if (suitable_rid(pollRep->certReqId, rid))
return pollRep;
}
CMPerr(0, CMP_R_CERTRESPONSE_NOT_FOUND);
add_expected_rid(rid);
return NULL;
}
/*
* returns a pointer to the CertResponse with the given CertReqId
* (or the first one in case -1) inside a CertRepMessage
* returns NULL on error or if no suitable CertResponse available
*/
OSSL_CMP_CERTRESPONSE *
ossl_cmp_certrepmessage_get0_certresponse(const OSSL_CMP_CERTREPMESSAGE *crm,
int rid)
{
OSSL_CMP_CERTRESPONSE *crep = NULL;
int i;
if (!ossl_assert(crm != NULL && crm->response != NULL))
return NULL;
for (i = 0; i < sk_OSSL_CMP_CERTRESPONSE_num(crm->response); i++) {
crep = sk_OSSL_CMP_CERTRESPONSE_value(crm->response, i);
if (suitable_rid(crep->certReqId, rid))
return crep;
}
CMPerr(0, CMP_R_CERTRESPONSE_NOT_FOUND);
add_expected_rid(rid);
return NULL;
}
/*
* CMP_CERTRESPONSE_get1_certificate() attempts to retrieve the returned
* certificate from the given certResponse B<crep>.
* Uses the privkey in case of indirect POP from B<ctx>.
* Returns a pointer to a copy of the found certificate, or NULL if not found.
*/
X509 *ossl_cmp_certresponse_get1_certificate(EVP_PKEY *privkey,
const OSSL_CMP_CERTRESPONSE *crep)
{
OSSL_CMP_CERTORENCCERT *coec;
X509 *crt = NULL;
if (!ossl_assert(crep != NULL))
return NULL;
if (crep->certifiedKeyPair
&& (coec = crep->certifiedKeyPair->certOrEncCert) != NULL) {
switch (coec->type) {
case OSSL_CMP_CERTORENCCERT_CERTIFICATE:
crt = X509_dup(coec->value.certificate);
break;
case OSSL_CMP_CERTORENCCERT_ENCRYPTEDCERT:
/* cert encrypted for indirect PoP; RFC 4210, 5.2.8.2 */
if (privkey == NULL) {
CMPerr(0, CMP_R_MISSING_PRIVATE_KEY);
return NULL;
}
crt =
OSSL_CRMF_ENCRYPTEDVALUE_get1_encCert(coec->value.encryptedCert,
privkey);
break;
default:
CMPerr(0, CMP_R_UNKNOWN_CERT_TYPE);
return NULL;
}
}
if (crt == NULL)
CMPerr(0, CMP_R_CERTIFICATE_NOT_FOUND);
return crt;
}
OSSL_CMP_MSG *ossl_cmp_msg_load(const char *file)
{
OSSL_CMP_MSG *msg = NULL;
BIO *bio = NULL;
if (!ossl_assert(file != NULL))
return NULL;
if ((bio = BIO_new_file(file, "rb")) == NULL)
return NULL;
msg = OSSL_d2i_CMP_MSG_bio(bio, NULL);
BIO_free(bio);
return msg;
}
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