/src/openssl36/crypto/cmp/cmp_hdr.c

Source
/*
 * Copyright 2007-2025 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 PKIHeader handling */

#include "cmp_local.h"
#include <openssl/rand.h> /* for RAND_bytes_ex() */

int ossl_cmp_hdr_set_pvno(OSSL_CMP_PKIHEADER *hdr, int pvno)
{
    if (!ossl_assert(hdr != NULL))
        return 0;
    return ASN1_INTEGER_set(hdr->pvno, pvno);
}

int ossl_cmp_hdr_get_pvno(const OSSL_CMP_PKIHEADER *hdr)
{
    int64_t pvno;

    if (!ossl_assert(hdr != NULL))
        return -1;
    if (!ASN1_INTEGER_get_int64(&pvno, hdr->pvno) || pvno < 0 || pvno > INT_MAX)
        return -1;
    return (int)pvno;
}

int ossl_cmp_hdr_get_protection_nid(const OSSL_CMP_PKIHEADER *hdr)
{
    if (!ossl_assert(hdr != NULL)
        || hdr->protectionAlg == NULL)
        return NID_undef;
    return OBJ_obj2nid(hdr->protectionAlg->algorithm);
}

ASN1_OCTET_STRING *OSSL_CMP_HDR_get0_transactionID(const OSSL_CMP_PKIHEADER *hdr)
{
    if (hdr == NULL) {
        ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
        return NULL;
    }
    return hdr->transactionID;
}

ASN1_OCTET_STRING *ossl_cmp_hdr_get0_senderNonce(const OSSL_CMP_PKIHEADER *hdr)
{
    if (!ossl_assert(hdr != NULL))
        return NULL;
    return hdr->senderNonce;
}

ASN1_OCTET_STRING *OSSL_CMP_HDR_get0_recipNonce(const OSSL_CMP_PKIHEADER *hdr)
{
    if (hdr == NULL) {
        ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
        return NULL;
    }
    return hdr->recipNonce;
}

STACK_OF(OSSL_CMP_ITAV)
*OSSL_CMP_HDR_get0_geninfo_ITAVs(const OSSL_CMP_PKIHEADER *hdr)
{
    if (hdr == NULL) {
        ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
        return NULL;
    }
    return hdr->generalInfo;
}

/* a NULL-DN as an empty sequence of RDNs */
int ossl_cmp_general_name_is_NULL_DN(GENERAL_NAME *name)
{
    return name == NULL
        || (name->type == GEN_DIRNAME && IS_NULL_DN(name->d.directoryName));
}

/*
 * Set the sender name in PKIHeader.
 * when nm is NULL, sender is set to an empty string
 * returns 1 on success, 0 on error
 */
int ossl_cmp_hdr_set1_sender(OSSL_CMP_PKIHEADER *hdr, const X509_NAME *nm)
{
    if (!ossl_assert(hdr != NULL))
        return 0;
    return GENERAL_NAME_set1_X509_NAME(&hdr->sender, nm);
}

int ossl_cmp_hdr_set1_recipient(OSSL_CMP_PKIHEADER *hdr, const X509_NAME *nm)
{
    if (!ossl_assert(hdr != NULL))
        return 0;
    return GENERAL_NAME_set1_X509_NAME(&hdr->recipient, nm);
}

int ossl_cmp_hdr_update_messageTime(OSSL_CMP_PKIHEADER *hdr)
{
    if (!ossl_assert(hdr != NULL))
        return 0;
    if (hdr->messageTime == NULL
        && (hdr->messageTime = ASN1_GENERALIZEDTIME_new()) == NULL)
        return 0;
    return ASN1_GENERALIZEDTIME_set(hdr->messageTime, time(NULL)) != NULL;
}

/* assign to *tgt a random byte array of given length */
static int set_random(ASN1_OCTET_STRING **tgt, OSSL_CMP_CTX *ctx, int len)
{
    unsigned char *bytes = OPENSSL_malloc(len);
    int res = 0;

    if (bytes == NULL || RAND_bytes_ex(ctx->libctx, bytes, len, 0) <= 0)
        ERR_raise(ERR_LIB_CMP, CMP_R_FAILURE_OBTAINING_RANDOM);
    else
        res = ossl_cmp_asn1_octet_string_set1_bytes(tgt, bytes, len);
    OPENSSL_free(bytes);
    return res;
}

int ossl_cmp_hdr_set1_senderKID(OSSL_CMP_PKIHEADER *hdr,
    const ASN1_OCTET_STRING *senderKID)
{
    if (!ossl_assert(hdr != NULL))
        return 0;
    return ossl_cmp_asn1_octet_string_set1(&hdr->senderKID, senderKID);
}

/* push the given text string to the given PKIFREETEXT ft */
int ossl_cmp_hdr_push0_freeText(OSSL_CMP_PKIHEADER *hdr, ASN1_UTF8STRING *text)
{
    if (!ossl_assert(hdr != NULL && text != NULL))
        return 0;

    if (hdr->freeText == NULL
        && (hdr->freeText = sk_ASN1_UTF8STRING_new_null()) == NULL)
        return 0;

    return sk_ASN1_UTF8STRING_push(hdr->freeText, text);
}

int ossl_cmp_hdr_push1_freeText(OSSL_CMP_PKIHEADER *hdr, ASN1_UTF8STRING *text)
{
    if (!ossl_assert(hdr != NULL && text != NULL))
        return 0;

    if (hdr->freeText == NULL
        && (hdr->freeText = sk_ASN1_UTF8STRING_new_null()) == NULL)
        return 0;

    return ossl_cmp_sk_ASN1_UTF8STRING_push_str(hdr->freeText, (char *)text->data,
        text->length);
}

int ossl_cmp_hdr_generalInfo_push0_item(OSSL_CMP_PKIHEADER *hdr,
    OSSL_CMP_ITAV *itav)
{
    if (!ossl_assert(hdr != NULL && itav != NULL))
        return 0;
    return OSSL_CMP_ITAV_push0_stack_item(&hdr->generalInfo, itav);
}

int ossl_cmp_hdr_generalInfo_push1_items(OSSL_CMP_PKIHEADER *hdr,
    const STACK_OF(OSSL_CMP_ITAV) *itavs)
{
    int i;
    OSSL_CMP_ITAV *itav;

    if (!ossl_assert(hdr != NULL))
        return 0;

    for (i = 0; i < sk_OSSL_CMP_ITAV_num(itavs); i++) {
        itav = OSSL_CMP_ITAV_dup(sk_OSSL_CMP_ITAV_value(itavs, i));
        if (itav == NULL)
            return 0;

        if (!ossl_cmp_hdr_generalInfo_push0_item(hdr, itav)) {
            OSSL_CMP_ITAV_free(itav);
            return 0;
        }
    }
    return 1;
}

int ossl_cmp_hdr_set_implicitConfirm(OSSL_CMP_PKIHEADER *hdr)
{
    OSSL_CMP_ITAV *itav;
    ASN1_TYPE *asn1null;

    if (!ossl_assert(hdr != NULL))
        return 0;
    asn1null = (ASN1_TYPE *)ASN1_NULL_new();
    if (asn1null == NULL)
        return 0;
    if ((itav = OSSL_CMP_ITAV_create(OBJ_nid2obj(NID_id_it_implicitConfirm),
             asn1null))
        == NULL)
        goto err;
    if (!ossl_cmp_hdr_generalInfo_push0_item(hdr, itav))
        goto err;
    return 1;

err:
    ASN1_TYPE_free(asn1null);
    OSSL_CMP_ITAV_free(itav);
    return 0;
}

/* return 1 if implicitConfirm in the generalInfo field of the header is set */
int ossl_cmp_hdr_has_implicitConfirm(const OSSL_CMP_PKIHEADER *hdr)
{
    int itavCount;
    int i;
    OSSL_CMP_ITAV *itav;

    if (!ossl_assert(hdr != NULL))
        return 0;

    itavCount = sk_OSSL_CMP_ITAV_num(hdr->generalInfo);
    for (i = 0; i < itavCount; i++) {
        itav = sk_OSSL_CMP_ITAV_value(hdr->generalInfo, i);
        if (itav != NULL
            && OBJ_obj2nid(itav->infoType) == NID_id_it_implicitConfirm)
            return 1;
    }

    return 0;
}

/*
 * set ctx->transactionID in CMP header
 * if ctx->transactionID is NULL, a random one is created with 128 bit
 * according to section 5.1.1:
 *
 * It is RECOMMENDED that the clients fill the transactionID field with
 * 128 bits of (pseudo-) random data for the start of a transaction to
 * reduce the probability of having the transactionID in use at the server.
 */
int ossl_cmp_hdr_set_transactionID(OSSL_CMP_CTX *ctx, OSSL_CMP_PKIHEADER *hdr)
{
    if (ctx->transactionID == NULL) {
        char *tid;

        if (!set_random(&ctx->transactionID, ctx,
                OSSL_CMP_TRANSACTIONID_LENGTH))
            return 0;
        tid = i2s_ASN1_OCTET_STRING(NULL, ctx->transactionID);
        if (tid != NULL)
            ossl_cmp_log1(DEBUG, ctx,
                "Starting new transaction with ID=%s", tid);
        OPENSSL_free(tid);
    }

    return ossl_cmp_asn1_octet_string_set1(&hdr->transactionID,
        ctx->transactionID);
}

/* fill in all fields of the hdr according to the info given in ctx */
int ossl_cmp_hdr_init(OSSL_CMP_CTX *ctx, OSSL_CMP_PKIHEADER *hdr)
{
    const X509_NAME *sender;
    const X509_NAME *rcp = NULL;

    if (!ossl_assert(ctx != NULL && hdr != NULL))
        return 0;

    /* set the CMP version */
    if (!ossl_cmp_hdr_set_pvno(hdr, OSSL_CMP_PVNO))
        return 0;

    /*
     * If no protection cert nor oldCert nor CSR nor subject is given,
     * sender name is not known to the client and thus set to NULL-DN
     */
    sender = ctx->cert != NULL ? X509_get_subject_name(ctx->cert) : ctx->oldCert != NULL ? X509_get_subject_name(ctx->oldCert)
        : ctx->p10CSR != NULL                                                            ? X509_REQ_get_subject_name(ctx->p10CSR)
                                                                                         : ctx->subjectName;
    if (!ossl_cmp_hdr_set1_sender(hdr, sender))
        return 0;

    /* determine recipient entry in PKIHeader */
    if (ctx->recipient != NULL)
        rcp = ctx->recipient;
    else if (ctx->srvCert != NULL)
        rcp = X509_get_subject_name(ctx->srvCert);
    else if (ctx->issuer != NULL)
        rcp = ctx->issuer;
    else if (ctx->oldCert != NULL)
        rcp = X509_get_issuer_name(ctx->oldCert);
    else if (ctx->cert != NULL)
        rcp = X509_get_issuer_name(ctx->cert);
    if (!ossl_cmp_hdr_set1_recipient(hdr, rcp))
        return 0;

    /* set current time as message time */
    if (!ossl_cmp_hdr_update_messageTime(hdr))
        return 0;

    if (ctx->recipNonce != NULL
        && !ossl_cmp_asn1_octet_string_set1(&hdr->recipNonce,
            ctx->recipNonce))
        return 0;

    if (!ossl_cmp_hdr_set_transactionID(ctx, hdr))
        return 0;

    /*-
     * set random senderNonce
     * according to section 5.1.1:
     *
     * senderNonce                  present
     *         -- 128 (pseudo-)random bits
     * The senderNonce and recipNonce fields protect the PKIMessage against
     * replay attacks. The senderNonce will typically be 128 bits of
     * (pseudo-) random data generated by the sender, whereas the recipNonce
     * is copied from the senderNonce of the previous message in the
     * transaction.
     */
    if (!set_random(&hdr->senderNonce, ctx, OSSL_CMP_SENDERNONCE_LENGTH))
        return 0;

    /* store senderNonce - for cmp with recipNonce in next outgoing msg */
    if (!OSSL_CMP_CTX_set1_senderNonce(ctx, hdr->senderNonce))
        return 0;

    /*-
     * freeText                [7] PKIFreeText OPTIONAL,
     * -- this may be used to indicate context-specific instructions
     * -- (this field is intended for human consumption)
     */
    if (ctx->freeText != NULL
        && !ossl_cmp_hdr_push1_freeText(hdr, ctx->freeText))
        return 0;

    return 1;
}

Coverage Report

Created: 2025-12-31 06:58

Line	Count	Source
1		/*
2		* Copyright 2007-2025 The OpenSSL Project Authors. All Rights Reserved.
3		* Copyright Nokia 2007-2019
4		* Copyright Siemens AG 2015-2019
5		*
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
10		*/
11
12		/* CMP functions for PKIHeader handling */
13
14		#include "cmp_local.h"
15		#include <openssl/rand.h> /* for RAND_bytes_ex() */
16
17		int ossl_cmp_hdr_set_pvno(OSSL_CMP_PKIHEADER *hdr, int pvno)
18	43.0k	{
19	43.0k	if (!ossl_assert(hdr != NULL))
20	0	return 0;
21	43.0k	return ASN1_INTEGER_set(hdr->pvno, pvno);
22	43.0k	}
23
24		int ossl_cmp_hdr_get_pvno(const OSSL_CMP_PKIHEADER *hdr)
25	73.3k	{
26	73.3k	int64_t pvno;
27
28	73.3k	if (!ossl_assert(hdr != NULL))
29	0	return -1;
30	73.3k	if (!ASN1_INTEGER_get_int64(&pvno, hdr->pvno) \|\| pvno < 0 \|\| pvno > INT_MAX)
31	24.5k	return -1;
32	48.7k	return (int)pvno;
33	73.3k	}
34
35		int ossl_cmp_hdr_get_protection_nid(const OSSL_CMP_PKIHEADER *hdr)
36	58.3k	{
37	58.3k	if (!ossl_assert(hdr != NULL)
38	58.3k	\|\| hdr->protectionAlg == NULL)
39	29.6k	return NID_undef;
40	28.7k	return OBJ_obj2nid(hdr->protectionAlg->algorithm);
41	58.3k	}
42
43		ASN1_OCTET_STRING OSSL_CMP_HDR_get0_transactionID(const OSSL_CMP_PKIHEADER hdr)
44	0	{
45	0	if (hdr == NULL) {
46	0	ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
47	0	return NULL;
48	0	}
49	0	return hdr->transactionID;
50	0	}
51
52		ASN1_OCTET_STRING ossl_cmp_hdr_get0_senderNonce(const OSSL_CMP_PKIHEADER hdr)
53	0	{
54	0	if (!ossl_assert(hdr != NULL))
55	0	return NULL;
56	0	return hdr->senderNonce;
57	0	}
58
59		ASN1_OCTET_STRING OSSL_CMP_HDR_get0_recipNonce(const OSSL_CMP_PKIHEADER hdr)
60	0	{
61	0	if (hdr == NULL) {
62	0	ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
63	0	return NULL;
64	0	}
65	0	return hdr->recipNonce;
66	0	}
67
68		STACK_OF(OSSL_CMP_ITAV)
69		OSSL_CMP_HDR_get0_geninfo_ITAVs(const OSSL_CMP_PKIHEADER hdr)
70	0	{
71	0	if (hdr == NULL) {
72	0	ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
73	0	return NULL;
74	0	}
75	0	return hdr->generalInfo;
76	0	}
77
78		/* a NULL-DN as an empty sequence of RDNs */
79		int ossl_cmp_general_name_is_NULL_DN(GENERAL_NAME *name)
80	2.78k	{
81	2.78k	return name == NULL
82	2.78k	\|\| (name->type == GEN_DIRNAME && IS_NULL_DN(name->d.directoryName));
83	2.78k	}
84
85		/*
86		* Set the sender name in PKIHeader.
87		* when nm is NULL, sender is set to an empty string
88		* returns 1 on success, 0 on error
89		*/
90		int ossl_cmp_hdr_set1_sender(OSSL_CMP_PKIHEADER hdr, const X509_NAME nm)
91	43.0k	{
92	43.0k	if (!ossl_assert(hdr != NULL))
93	0	return 0;
94	43.0k	return GENERAL_NAME_set1_X509_NAME(&hdr->sender, nm);
95	43.0k	}
96
97		int ossl_cmp_hdr_set1_recipient(OSSL_CMP_PKIHEADER hdr, const X509_NAME nm)
98	43.0k	{
99	43.0k	if (!ossl_assert(hdr != NULL))
100	0	return 0;
101	43.0k	return GENERAL_NAME_set1_X509_NAME(&hdr->recipient, nm);
102	43.0k	}
103
104		int ossl_cmp_hdr_update_messageTime(OSSL_CMP_PKIHEADER *hdr)
105	43.0k	{
106	43.0k	if (!ossl_assert(hdr != NULL))
107	0	return 0;
108	43.0k	if (hdr->messageTime == NULL
109	43.0k	&& (hdr->messageTime = ASN1_GENERALIZEDTIME_new()) == NULL)
110	0	return 0;
111	43.0k	return ASN1_GENERALIZEDTIME_set(hdr->messageTime, time(NULL)) != NULL;
112	43.0k	}
113
114		/* assign to tgt a random byte array of given length /
115		static int set_random(ASN1_OCTET_STRING *tgt, OSSL_CMP_CTX ctx, int len)
116	75.9k	{
117	75.9k	unsigned char *bytes = OPENSSL_malloc(len);
118	75.9k	int res = 0;
119
120	75.9k	if (bytes == NULL \|\| RAND_bytes_ex(ctx->libctx, bytes, len, 0) <= 0)
121	75.9k	ERR_raise(ERR_LIB_CMP, CMP_R_FAILURE_OBTAINING_RANDOM);
122	75.9k	else
123	75.9k	res = ossl_cmp_asn1_octet_string_set1_bytes(tgt, bytes, len);
124	75.9k	OPENSSL_free(bytes);
125	75.9k	return res;
126	75.9k	}
127
128		int ossl_cmp_hdr_set1_senderKID(OSSL_CMP_PKIHEADER *hdr,
129		const ASN1_OCTET_STRING *senderKID)
130	0	{
131	0	if (!ossl_assert(hdr != NULL))
132	0	return 0;
133	0	return ossl_cmp_asn1_octet_string_set1(&hdr->senderKID, senderKID);
134	0	}
135
136		/* push the given text string to the given PKIFREETEXT ft */
137		int ossl_cmp_hdr_push0_freeText(OSSL_CMP_PKIHEADER hdr, ASN1_UTF8STRING text)
138	0	{
139	0	if (!ossl_assert(hdr != NULL && text != NULL))
140	0	return 0;
141
142	0	if (hdr->freeText == NULL
143	0	&& (hdr->freeText = sk_ASN1_UTF8STRING_new_null()) == NULL)
144	0	return 0;
145
146	0	return sk_ASN1_UTF8STRING_push(hdr->freeText, text);
147	0	}
148
149		int ossl_cmp_hdr_push1_freeText(OSSL_CMP_PKIHEADER hdr, ASN1_UTF8STRING text)
150	0	{
151	0	if (!ossl_assert(hdr != NULL && text != NULL))
152	0	return 0;
153
154	0	if (hdr->freeText == NULL
155	0	&& (hdr->freeText = sk_ASN1_UTF8STRING_new_null()) == NULL)
156	0	return 0;
157
158	0	return ossl_cmp_sk_ASN1_UTF8STRING_push_str(hdr->freeText, (char *)text->data,
159	0	text->length);
160	0	}
161
162		int ossl_cmp_hdr_generalInfo_push0_item(OSSL_CMP_PKIHEADER *hdr,
163		OSSL_CMP_ITAV *itav)
164	0	{
165	0	if (!ossl_assert(hdr != NULL && itav != NULL))
166	0	return 0;
167	0	return OSSL_CMP_ITAV_push0_stack_item(&hdr->generalInfo, itav);
168	0	}
169
170		int ossl_cmp_hdr_generalInfo_push1_items(OSSL_CMP_PKIHEADER *hdr,
171		const STACK_OF(OSSL_CMP_ITAV) *itavs)
172	0	{
173	0	int i;
174	0	OSSL_CMP_ITAV *itav;
175
176	0	if (!ossl_assert(hdr != NULL))
177	0	return 0;
178
179	0	for (i = 0; i < sk_OSSL_CMP_ITAV_num(itavs); i++) {
180	0	itav = OSSL_CMP_ITAV_dup(sk_OSSL_CMP_ITAV_value(itavs, i));
181	0	if (itav == NULL)
182	0	return 0;
183
184	0	if (!ossl_cmp_hdr_generalInfo_push0_item(hdr, itav)) {
185	0	OSSL_CMP_ITAV_free(itav);
186	0	return 0;
187	0	}
188	0	}
189	0	return 1;
190	0	}
191
192		int ossl_cmp_hdr_set_implicitConfirm(OSSL_CMP_PKIHEADER *hdr)
193	0	{
194	0	OSSL_CMP_ITAV *itav;
195	0	ASN1_TYPE *asn1null;
196
197	0	if (!ossl_assert(hdr != NULL))
198	0	return 0;
199	0	asn1null = (ASN1_TYPE *)ASN1_NULL_new();
200	0	if (asn1null == NULL)
201	0	return 0;
202	0	if ((itav = OSSL_CMP_ITAV_create(OBJ_nid2obj(NID_id_it_implicitConfirm),
203	0	asn1null))
204	0	== NULL)
205	0	goto err;
206	0	if (!ossl_cmp_hdr_generalInfo_push0_item(hdr, itav))
207	0	goto err;
208	0	return 1;
209
210	0	err:
211	0	ASN1_TYPE_free(asn1null);
212	0	OSSL_CMP_ITAV_free(itav);
213	0	return 0;
214	0	}
215
216		/* return 1 if implicitConfirm in the generalInfo field of the header is set */
217		int ossl_cmp_hdr_has_implicitConfirm(const OSSL_CMP_PKIHEADER *hdr)
218	0	{
219	0	int itavCount;
220	0	int i;
221	0	OSSL_CMP_ITAV *itav;
222
223	0	if (!ossl_assert(hdr != NULL))
224	0	return 0;
225
226	0	itavCount = sk_OSSL_CMP_ITAV_num(hdr->generalInfo);
227	0	for (i = 0; i < itavCount; i++) {
228	0	itav = sk_OSSL_CMP_ITAV_value(hdr->generalInfo, i);
229	0	if (itav != NULL
230	0	&& OBJ_obj2nid(itav->infoType) == NID_id_it_implicitConfirm)
231	0	return 1;
232	0	}
233
234	0	return 0;
235	0	}
236
237		/*
238		* set ctx->transactionID in CMP header
239		* if ctx->transactionID is NULL, a random one is created with 128 bit
240		* according to section 5.1.1:
241		*
242		* It is RECOMMENDED that the clients fill the transactionID field with
243		* 128 bits of (pseudo-) random data for the start of a transaction to
244		* reduce the probability of having the transactionID in use at the server.
245		*/
246		int ossl_cmp_hdr_set_transactionID(OSSL_CMP_CTX ctx, OSSL_CMP_PKIHEADER hdr)
247	43.0k	{
248	43.0k	if (ctx->transactionID == NULL) {
249	32.9k	char *tid;
250
251	32.9k	if (!set_random(&ctx->transactionID, ctx,
252	32.9k	OSSL_CMP_TRANSACTIONID_LENGTH))
253	0	return 0;
254	32.9k	tid = i2s_ASN1_OCTET_STRING(NULL, ctx->transactionID);
255	32.9k	if (tid != NULL)
256	32.9k	ossl_cmp_log1(DEBUG, ctx,
257	32.9k	"Starting new transaction with ID=%s", tid);
258	32.9k	OPENSSL_free(tid);
259	32.9k	}
260
261	43.0k	return ossl_cmp_asn1_octet_string_set1(&hdr->transactionID,
262	43.0k	ctx->transactionID);
263	43.0k	}
264
265		/* fill in all fields of the hdr according to the info given in ctx */
266		int ossl_cmp_hdr_init(OSSL_CMP_CTX ctx, OSSL_CMP_PKIHEADER hdr)
267	35.2k	{
268	35.2k	const X509_NAME *sender;
269	35.2k	const X509_NAME *rcp = NULL;
270
271	35.2k	if (!ossl_assert(ctx != NULL && hdr != NULL))
272	0	return 0;
273
274		/* set the CMP version */
275	35.2k	if (!ossl_cmp_hdr_set_pvno(hdr, OSSL_CMP_PVNO))
276	0	return 0;
277
278		/*
279		* If no protection cert nor oldCert nor CSR nor subject is given,
280		* sender name is not known to the client and thus set to NULL-DN
281		*/
282	35.2k	sender = ctx->cert != NULL ? X509_get_subject_name(ctx->cert) : ctx->oldCert != NULL ? X509_get_subject_name(ctx->oldCert)
283	35.2k	: ctx->p10CSR != NULL ? X509_REQ_get_subject_name(ctx->p10CSR)
284	33.0k	: ctx->subjectName;
285	35.2k	if (!ossl_cmp_hdr_set1_sender(hdr, sender))
286	0	return 0;
287
288		/* determine recipient entry in PKIHeader */
289	35.2k	if (ctx->recipient != NULL)
290	11.5k	rcp = ctx->recipient;
291	23.6k	else if (ctx->srvCert != NULL)
292	0	rcp = X509_get_subject_name(ctx->srvCert);
293	23.6k	else if (ctx->issuer != NULL)
294	0	rcp = ctx->issuer;
295	23.6k	else if (ctx->oldCert != NULL)
296	2.25k	rcp = X509_get_issuer_name(ctx->oldCert);
297	21.4k	else if (ctx->cert != NULL)
298	0	rcp = X509_get_issuer_name(ctx->cert);
299	35.2k	if (!ossl_cmp_hdr_set1_recipient(hdr, rcp))
300	0	return 0;
301
302		/* set current time as message time */
303	35.2k	if (!ossl_cmp_hdr_update_messageTime(hdr))
304	0	return 0;
305
306	35.2k	if (ctx->recipNonce != NULL
307	9.11k	&& !ossl_cmp_asn1_octet_string_set1(&hdr->recipNonce,
308	9.11k	ctx->recipNonce))
309	0	return 0;
310
311	35.2k	if (!ossl_cmp_hdr_set_transactionID(ctx, hdr))
312	0	return 0;
313
314		/*-
315		* set random senderNonce
316		* according to section 5.1.1:
317		*
318		* senderNonce present
319		* -- 128 (pseudo-)random bits
320		* The senderNonce and recipNonce fields protect the PKIMessage against
321		* replay attacks. The senderNonce will typically be 128 bits of
322		* (pseudo-) random data generated by the sender, whereas the recipNonce
323		* is copied from the senderNonce of the previous message in the
324		* transaction.
325		*/
326	35.2k	if (!set_random(&hdr->senderNonce, ctx, OSSL_CMP_SENDERNONCE_LENGTH))
327	0	return 0;
328
329		/* store senderNonce - for cmp with recipNonce in next outgoing msg */
330	35.2k	if (!OSSL_CMP_CTX_set1_senderNonce(ctx, hdr->senderNonce))
331	0	return 0;
332
333		/*-
334		* freeText [7] PKIFreeText OPTIONAL,
335		* -- this may be used to indicate context-specific instructions
336		* -- (this field is intended for human consumption)
337		*/
338	35.2k	if (ctx->freeText != NULL
339	0	&& !ossl_cmp_hdr_push1_freeText(hdr, ctx->freeText))
340	0	return 0;
341
342	35.2k	return 1;
343	35.2k	}