[thirdparty/openssl.git] / crypto / cms / cms_ess.c

/*
 * Copyright 2008-2019 The OpenSSL Project Authors. All Rights Reserved.
 *
 * 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
 */

#include "internal/cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/pem.h>
#include <openssl/rand.h>
#include <openssl/x509v3.h>
#include <openssl/err.h>
#include <openssl/cms.h>
#include <openssl/ess.h>
#include "cms_local.h"
#include "crypto/ess.h"
#include "crypto/cms.h"

IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest)

/* ESS services */

int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr)
{
    ASN1_STRING *str;
    CMS_ReceiptRequest *rr = NULL;
    if (prr)
        *prr = NULL;
    str = CMS_signed_get0_data_by_OBJ(si,
                                      OBJ_nid2obj
                                      (NID_id_smime_aa_receiptRequest), -3,
                                      V_ASN1_SEQUENCE);
    if (!str)
        return 0;

    rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest));
    if (!rr)
        return -1;
    if (prr)
        *prr = rr;
    else
        CMS_ReceiptRequest_free(rr);
    return 1;
}

CMS_ReceiptRequest *CMS_ReceiptRequest_create0(unsigned char *id, int idlen,
                                               int allorfirst,
                                               STACK_OF(GENERAL_NAMES)
                                               *receiptList, STACK_OF(GENERAL_NAMES)
                                               *receiptsTo)
{
    CMS_ReceiptRequest *rr = NULL;

    rr = CMS_ReceiptRequest_new();
    if (rr == NULL)
        goto merr;
    if (id)
        ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen);
    else {
        if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32))
            goto merr;
        if (RAND_bytes(rr->signedContentIdentifier->data, 32) <= 0)
            goto err;
    }

    sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free);
    rr->receiptsTo = receiptsTo;

    if (receiptList) {
        rr->receiptsFrom->type = 1;
        rr->receiptsFrom->d.receiptList = receiptList;
    } else {
        rr->receiptsFrom->type = 0;
        rr->receiptsFrom->d.allOrFirstTier = allorfirst;
    }

    return rr;

 merr:
    CMSerr(CMS_F_CMS_RECEIPTREQUEST_CREATE0, ERR_R_MALLOC_FAILURE);

 err:
    CMS_ReceiptRequest_free(rr);
    return NULL;

}

int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr)
{
    unsigned char *rrder = NULL;
    int rrderlen, r = 0;

    rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder);
    if (rrderlen < 0)
        goto merr;

    if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest,
                                     V_ASN1_SEQUENCE, rrder, rrderlen))
        goto merr;

    r = 1;

 merr:
    if (!r)
        CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST, ERR_R_MALLOC_FAILURE);

    OPENSSL_free(rrder);

    return r;

}

void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
                                    ASN1_STRING **pcid,
                                    int *pallorfirst,
                                    STACK_OF(GENERAL_NAMES) **plist,
                                    STACK_OF(GENERAL_NAMES) **prto)
{
    if (pcid)
        *pcid = rr->signedContentIdentifier;
    if (rr->receiptsFrom->type == 0) {
        if (pallorfirst)
            *pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier;
        if (plist)
            *plist = NULL;
    } else {
        if (pallorfirst)
            *pallorfirst = -1;
        if (plist)
            *plist = rr->receiptsFrom->d.receiptList;
    }
    if (prto)
        *prto = rr->receiptsTo;
}

/* Digest a SignerInfo structure for msgSigDigest attribute processing */

static int cms_msgSigDigest(CMS_SignerInfo *si,
                            unsigned char *dig, unsigned int *diglen)
{
    const EVP_MD *md;
    md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
    if (md == NULL)
        return 0;
    if (!ASN1_item_digest(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
                          si->signedAttrs, dig, diglen))
        return 0;
    return 1;
}

/* Add a msgSigDigest attribute to a SignerInfo */

int cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src)
{
    unsigned char dig[EVP_MAX_MD_SIZE];
    unsigned int diglen;
    if (!cms_msgSigDigest(src, dig, &diglen)) {
        CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR);
        return 0;
    }
    if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
                                     V_ASN1_OCTET_STRING, dig, diglen)) {
        CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE);
        return 0;
    }
    return 1;
}

/* Verify signed receipt after it has already passed normal CMS verify */

int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms)
{
    int r = 0, i;
    CMS_ReceiptRequest *rr = NULL;
    CMS_Receipt *rct = NULL;
    STACK_OF(CMS_SignerInfo) *sis, *osis;
    CMS_SignerInfo *si, *osi = NULL;
    ASN1_OCTET_STRING *msig, **pcont;
    ASN1_OBJECT *octype;
    unsigned char dig[EVP_MAX_MD_SIZE];
    unsigned int diglen;

    /* Get SignerInfos, also checks SignedData content type */
    osis = CMS_get0_SignerInfos(req_cms);
    sis = CMS_get0_SignerInfos(cms);
    if (!osis || !sis)
        goto err;

    if (sk_CMS_SignerInfo_num(sis) != 1) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NEED_ONE_SIGNER);
        goto err;
    }

    /* Check receipt content type */
    if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NOT_A_SIGNED_RECEIPT);
        goto err;
    }

    /* Extract and decode receipt content */
    pcont = CMS_get0_content(cms);
    if (!pcont || !*pcont) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT);
        goto err;
    }

    rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt));

    if (!rct) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_RECEIPT_DECODE_ERROR);
        goto err;
    }

    /* Locate original request */

    for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++) {
        osi = sk_CMS_SignerInfo_value(osis, i);
        if (!ASN1_STRING_cmp(osi->signature, rct->originatorSignatureValue))
            break;
    }

    if (i == sk_CMS_SignerInfo_num(osis)) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MATCHING_SIGNATURE);
        goto err;
    }

    si = sk_CMS_SignerInfo_value(sis, 0);

    /* Get msgSigDigest value and compare */

    msig = CMS_signed_get0_data_by_OBJ(si,
                                       OBJ_nid2obj
                                       (NID_id_smime_aa_msgSigDigest), -3,
                                       V_ASN1_OCTET_STRING);

    if (!msig) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MSGSIGDIGEST);
        goto err;
    }

    if (!cms_msgSigDigest(osi, dig, &diglen)) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_ERROR);
        goto err;
    }

    if (diglen != (unsigned int)msig->length) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_WRONG_LENGTH);
        goto err;
    }

    if (memcmp(dig, msig->data, diglen)) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
               CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE);
        goto err;
    }

    /* Compare content types */

    octype = CMS_signed_get0_data_by_OBJ(osi,
                                         OBJ_nid2obj(NID_pkcs9_contentType),
                                         -3, V_ASN1_OBJECT);
    if (!octype) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT_TYPE);
        goto err;
    }

    /* Compare details in receipt request */

    if (OBJ_cmp(octype, rct->contentType)) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENT_TYPE_MISMATCH);
        goto err;
    }

    /* Get original receipt request details */

    if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_RECEIPT_REQUEST);
        goto err;
    }

    if (ASN1_STRING_cmp(rr->signedContentIdentifier,
                        rct->signedContentIdentifier)) {
        CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENTIDENTIFIER_MISMATCH);
        goto err;
    }

    r = 1;

 err:
    CMS_ReceiptRequest_free(rr);
    M_ASN1_free_of(rct, CMS_Receipt);
    return r;

}

/*
 * Encode a Receipt into an OCTET STRING read for including into content of a
 * SignedData ContentInfo.
 */

ASN1_OCTET_STRING *cms_encode_Receipt(CMS_SignerInfo *si)
{
    CMS_Receipt rct;
    CMS_ReceiptRequest *rr = NULL;
    ASN1_OBJECT *ctype;
    ASN1_OCTET_STRING *os = NULL;

    /* Get original receipt request */

    /* Get original receipt request details */

    if (CMS_get1_ReceiptRequest(si, &rr) <= 0) {
        CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST);
        goto err;
    }

    /* Get original content type */

    ctype = CMS_signed_get0_data_by_OBJ(si,
                                        OBJ_nid2obj(NID_pkcs9_contentType),
                                        -3, V_ASN1_OBJECT);
    if (!ctype) {
        CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_CONTENT_TYPE);
        goto err;
    }

    rct.version = 1;
    rct.contentType = ctype;
    rct.signedContentIdentifier = rr->signedContentIdentifier;
    rct.originatorSignatureValue = si->signature;

    os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL);

 err:
    CMS_ReceiptRequest_free(rr);
    return os;
}

/*
 * Add signer certificate's V2 digest |sc| to a SignerInfo structure |si|
 */

int cms_add1_signing_cert_v2(CMS_SignerInfo *si, ESS_SIGNING_CERT_V2 *sc)
{
    ASN1_STRING *seq = NULL;
    unsigned char *p, *pp;
    int len;

    /* Add SigningCertificateV2 signed attribute to the signer info. */
    len = i2d_ESS_SIGNING_CERT_V2(sc, NULL);
    if ((pp = OPENSSL_malloc(len)) == NULL)
        goto err;
    p = pp;
    i2d_ESS_SIGNING_CERT_V2(sc, &p);
    if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
        goto err;
    OPENSSL_free(pp);
    pp = NULL;
    if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificateV2,
                                     V_ASN1_SEQUENCE, seq, -1))
        goto err;
    ASN1_STRING_free(seq);
    return 1;
 err:
    CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT_V2, ERR_R_MALLOC_FAILURE);
    ASN1_STRING_free(seq);
    OPENSSL_free(pp);
    return 0;
}

/*
 * Add signer certificate's digest |sc| to a SignerInfo structure |si|
 */

int cms_add1_signing_cert(CMS_SignerInfo *si, ESS_SIGNING_CERT *sc)
{
    ASN1_STRING *seq = NULL;
    unsigned char *p, *pp;
    int len;

    /* Add SigningCertificate signed attribute to the signer info. */
    len = i2d_ESS_SIGNING_CERT(sc, NULL);
    if ((pp = OPENSSL_malloc(len)) == NULL)
        goto err;
    p = pp;
    i2d_ESS_SIGNING_CERT(sc, &p);
    if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len))
        goto err;
    OPENSSL_free(pp);
    pp = NULL;
    if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificate,
                                     V_ASN1_SEQUENCE, seq, -1))
        goto err;
    ASN1_STRING_free(seq);
    return 1;
 err:
    CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
    ASN1_STRING_free(seq);
    OPENSSL_free(pp);
    return 0;
}
Commit	Line	Data
0f113f3e	1	/*
e85d19c6	2	* Copyright 2008-2019 The OpenSSL Project Authors. All Rights Reserved.
f4cc56f4	3	*
08ddd302	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
b1322259 RS	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
f4cc56f4 DSH	8	*/
f4cc56f4 DSH	9
b39fc560	10	#include "internal/cryptlib.h"
f4cc56f4 DSH	11	#include <openssl/asn1t.h>
	12	#include <openssl/pem.h>
	13	#include <openssl/rand.h>
	14	#include <openssl/x509v3.h>
	15	#include <openssl/err.h>
	16	#include <openssl/cms.h>
e85d19c6	17	#include <openssl/ess.h>
706457b7	18	#include "cms_local.h"
25f2138b DMSP	19	#include "crypto/ess.h"
25f2138b DMSP	20	#include "crypto/cms.h"
f4cc56f4	21
f4cc56f4 DSH	22	IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest)
f4cc56f4 DSH	23
e85d19c6	24	/* ESS services */
f4cc56f4 DSH	25
f4cc56f4 DSH	26	int CMS_get1_ReceiptRequest(CMS_SignerInfo si, CMS_ReceiptRequest *prr)
0f113f3e MC	27	{
	28	ASN1_STRING *str;
	29	CMS_ReceiptRequest *rr = NULL;
	30	if (prr)
	31	*prr = NULL;
	32	str = CMS_signed_get0_data_by_OBJ(si,
	33	OBJ_nid2obj
	34	(NID_id_smime_aa_receiptRequest), -3,
	35	V_ASN1_SEQUENCE);
	36	if (!str)
	37	return 0;
	38
	39	rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest));
	40	if (!rr)
	41	return -1;
	42	if (prr)
	43	*prr = rr;
	44	else
	45	CMS_ReceiptRequest_free(rr);
	46	return 1;
	47	}
f4cc56f4	48
f5e2354c	49	CMS_ReceiptRequest CMS_ReceiptRequest_create0(unsigned char id, int idlen,
0f113f3e MC	50	int allorfirst,
	51	STACK_OF(GENERAL_NAMES)
	52	*receiptList, STACK_OF(GENERAL_NAMES)
	53	*receiptsTo)
	54	{
	55	CMS_ReceiptRequest *rr = NULL;
	56
	57	rr = CMS_ReceiptRequest_new();
90945fa3	58	if (rr == NULL)
0f113f3e MC	59	goto merr;
	60	if (id)
	61	ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen);
	62	else {
	63	if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32))
	64	goto merr;
266483d2	65	if (RAND_bytes(rr->signedContentIdentifier->data, 32) <= 0)
0f113f3e MC	66	goto err;
	67	}
	68
	69	sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free);
	70	rr->receiptsTo = receiptsTo;
	71
	72	if (receiptList) {
	73	rr->receiptsFrom->type = 1;
	74	rr->receiptsFrom->d.receiptList = receiptList;
	75	} else {
	76	rr->receiptsFrom->type = 0;
	77	rr->receiptsFrom->d.allOrFirstTier = allorfirst;
	78	}
	79
	80	return rr;
	81
	82	merr:
	83	CMSerr(CMS_F_CMS_RECEIPTREQUEST_CREATE0, ERR_R_MALLOC_FAILURE);
	84
	85	err:
25aaa98a	86	CMS_ReceiptRequest_free(rr);
0f113f3e MC	87	return NULL;
	88
	89	}
f5e2354c DSH	90
f5e2354c DSH	91	int CMS_add1_ReceiptRequest(CMS_SignerInfo si, CMS_ReceiptRequest rr)
0f113f3e MC	92	{
	93	unsigned char *rrder = NULL;
	94	int rrderlen, r = 0;
f5e2354c	95
0f113f3e MC	96	rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder);
	97	if (rrderlen < 0)
	98	goto merr;
f5e2354c	99
0f113f3e MC	100	if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest,
	101	V_ASN1_SEQUENCE, rrder, rrderlen))
	102	goto merr;
f5e2354c	103
0f113f3e	104	r = 1;
f5e2354c	105
0f113f3e MC	106	merr:
	107	if (!r)
	108	CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST, ERR_R_MALLOC_FAILURE);
f5e2354c	109
b548a1f1	110	OPENSSL_free(rrder);
f4cc56f4	111
0f113f3e MC	112	return r;
	113
	114	}
f4cc56f4 DSH	115
f4cc56f4 DSH	116	void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr,
0f113f3e MC	117	ASN1_STRING **pcid,
	118	int *pallorfirst,
	119	STACK_OF(GENERAL_NAMES) **plist,
	120	STACK_OF(GENERAL_NAMES) **prto)
	121	{
	122	if (pcid)
	123	*pcid = rr->signedContentIdentifier;
	124	if (rr->receiptsFrom->type == 0) {
	125	if (pallorfirst)
	126	*pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier;
	127	if (plist)
	128	*plist = NULL;
	129	} else {
	130	if (pallorfirst)
	131	*pallorfirst = -1;
	132	if (plist)
	133	*plist = rr->receiptsFrom->d.receiptList;
	134	}
	135	if (prto)
	136	*prto = rr->receiptsTo;
	137	}
f4cc56f4	138
36309aa2 DSH	139	/* Digest a SignerInfo structure for msgSigDigest attribute processing */
36309aa2 DSH	140
eb9d8d8c	141	static int cms_msgSigDigest(CMS_SignerInfo *si,
0f113f3e MC	142	unsigned char dig, unsigned int diglen)
	143	{
	144	const EVP_MD *md;
	145	md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm);
	146	if (md == NULL)
	147	return 0;
	148	if (!ASN1_item_digest(ASN1_ITEM_rptr(CMS_Attributes_Verify), md,
	149	si->signedAttrs, dig, diglen))
	150	return 0;
	151	return 1;
	152	}
eb9d8d8c	153
36309aa2 DSH	154	/* Add a msgSigDigest attribute to a SignerInfo */
	155
	156	int cms_msgSigDigest_add1(CMS_SignerInfo dest, CMS_SignerInfo src)
0f113f3e MC	157	{
	158	unsigned char dig[EVP_MAX_MD_SIZE];
	159	unsigned int diglen;
	160	if (!cms_msgSigDigest(src, dig, &diglen)) {
	161	CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR);
	162	return 0;
	163	}
	164	if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest,
	165	V_ASN1_OCTET_STRING, dig, diglen)) {
	166	CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE);
	167	return 0;
	168	}
	169	return 1;
	170	}
36309aa2	171
eb9d8d8c DSH	172	/* Verify signed receipt after it has already passed normal CMS verify */
	173
	174	int cms_Receipt_verify(CMS_ContentInfo cms, CMS_ContentInfo req_cms)
0f113f3e MC	175	{
	176	int r = 0, i;
	177	CMS_ReceiptRequest *rr = NULL;
	178	CMS_Receipt *rct = NULL;
	179	STACK_OF(CMS_SignerInfo) sis, osis;
	180	CMS_SignerInfo si, osi = NULL;
	181	ASN1_OCTET_STRING msig, *pcont;
	182	ASN1_OBJECT *octype;
	183	unsigned char dig[EVP_MAX_MD_SIZE];
	184	unsigned int diglen;
	185
	186	/* Get SignerInfos, also checks SignedData content type */
	187	osis = CMS_get0_SignerInfos(req_cms);
	188	sis = CMS_get0_SignerInfos(cms);
	189	if (!osis \|\| !sis)
	190	goto err;
	191
	192	if (sk_CMS_SignerInfo_num(sis) != 1) {
	193	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NEED_ONE_SIGNER);
	194	goto err;
	195	}
	196
	197	/* Check receipt content type */
	198	if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt) {
	199	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NOT_A_SIGNED_RECEIPT);
	200	goto err;
	201	}
	202
	203	/* Extract and decode receipt content */
	204	pcont = CMS_get0_content(cms);
	205	if (!pcont \|\| !*pcont) {
	206	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT);
	207	goto err;
	208	}
	209
	210	rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt));
	211
	212	if (!rct) {
	213	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_RECEIPT_DECODE_ERROR);
	214	goto err;
	215	}
	216
	217	/* Locate original request */
	218
	219	for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++) {
	220	osi = sk_CMS_SignerInfo_value(osis, i);
	221	if (!ASN1_STRING_cmp(osi->signature, rct->originatorSignatureValue))
	222	break;
	223	}
	224
	225	if (i == sk_CMS_SignerInfo_num(osis)) {
	226	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MATCHING_SIGNATURE);
	227	goto err;
	228	}
	229
	230	si = sk_CMS_SignerInfo_value(sis, 0);
	231
	232	/* Get msgSigDigest value and compare */
	233
	234	msig = CMS_signed_get0_data_by_OBJ(si,
	235	OBJ_nid2obj
	236	(NID_id_smime_aa_msgSigDigest), -3,
	237	V_ASN1_OCTET_STRING);
	238
239	if (!msig) {
240	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MSGSIGDIGEST);
241	goto err;
242	}
243
244	if (!cms_msgSigDigest(osi, dig, &diglen)) {
245	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_ERROR);
246	goto err;
247	}
248
249	if (diglen != (unsigned int)msig->length) {
250	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_WRONG_LENGTH);
251	goto err;
252	}
253
254	if (memcmp(dig, msig->data, diglen)) {
255	CMSerr(CMS_F_CMS_RECEIPT_VERIFY,
256	CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE);
257	goto err;
258	}
259
260	/* Compare content types */
261
262	octype = CMS_signed_get0_data_by_OBJ(osi,
263	OBJ_nid2obj(NID_pkcs9_contentType),
264	-3, V_ASN1_OBJECT);
265	if (!octype) {
266	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT_TYPE);
267	goto err;
268	}
269
270	/* Compare details in receipt request */
271
272	if (OBJ_cmp(octype, rct->contentType)) {
273	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENT_TYPE_MISMATCH);
274	goto err;
275	}
276
277	/* Get original receipt request details */
278
279	if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) {
280	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_RECEIPT_REQUEST);
281	goto err;
282	}
283
284	if (ASN1_STRING_cmp(rr->signedContentIdentifier,
285	rct->signedContentIdentifier)) {
286	CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENTIDENTIFIER_MISMATCH);
287	goto err;
288	}
289
290	r = 1;
291
292	err:
25aaa98a	293	CMS_ReceiptRequest_free(rr);
2ace7450	294	M_ASN1_free_of(rct, CMS_Receipt);
0f113f3e MC	295	return r;
	296
	297	}
	298
	299	/*
	300	* Encode a Receipt into an OCTET STRING read for including into content of a
	301	* SignedData ContentInfo.
36309aa2 DSH	302	*/
	303
	304	ASN1_OCTET_STRING cms_encode_Receipt(CMS_SignerInfo si)
0f113f3e MC	305	{
	306	CMS_Receipt rct;
	307	CMS_ReceiptRequest *rr = NULL;
	308	ASN1_OBJECT *ctype;
	309	ASN1_OCTET_STRING *os = NULL;
36309aa2	310
0f113f3e	311	/* Get original receipt request */
36309aa2	312
0f113f3e	313	/* Get original receipt request details */
36309aa2	314
0f113f3e MC	315	if (CMS_get1_ReceiptRequest(si, &rr) <= 0) {
	316	CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST);
	317	goto err;
	318	}
36309aa2	319
0f113f3e	320	/* Get original content type */
36309aa2	321
0f113f3e MC	322	ctype = CMS_signed_get0_data_by_OBJ(si,
	323	OBJ_nid2obj(NID_pkcs9_contentType),
	324	-3, V_ASN1_OBJECT);
	325	if (!ctype) {
	326	CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_CONTENT_TYPE);
	327	goto err;
	328	}
36309aa2	329
0f113f3e MC	330	rct.version = 1;
	331	rct.contentType = ctype;
	332	rct.signedContentIdentifier = rr->signedContentIdentifier;
	333	rct.originatorSignatureValue = si->signature;
36309aa2	334
0f113f3e	335	os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL);
36309aa2	336
0f113f3e	337	err:
25aaa98a	338	CMS_ReceiptRequest_free(rr);
0f113f3e	339	return os;
0f113f3e	340	}
e85d19c6 AI	341
e85d19c6 AI	342	/*
8c00f267	343	* Add signer certificate's V2 digest \|sc\| to a SignerInfo structure \|si\|
e85d19c6 AI	344	*/
e85d19c6 AI	345
8c00f267	346	int cms_add1_signing_cert_v2(CMS_SignerInfo si, ESS_SIGNING_CERT_V2 sc)
e85d19c6 AI	347	{
	348	ASN1_STRING *seq = NULL;
	349	unsigned char p, pp;
	350	int len;
	351
	352	/* Add SigningCertificateV2 signed attribute to the signer info. */
	353	len = i2d_ESS_SIGNING_CERT_V2(sc, NULL);
	354	if ((pp = OPENSSL_malloc(len)) == NULL)
	355	goto err;
	356	p = pp;
	357	i2d_ESS_SIGNING_CERT_V2(sc, &p);
	358	if (!(seq = ASN1_STRING_new()) \|\| !ASN1_STRING_set(seq, pp, len))
	359	goto err;
	360	OPENSSL_free(pp);
	361	pp = NULL;
	362	if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificateV2,
	363	V_ASN1_SEQUENCE, seq, -1))
	364	goto err;
	365	ASN1_STRING_free(seq);
	366	return 1;
	367	err:
	368	CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT_V2, ERR_R_MALLOC_FAILURE);
	369	ASN1_STRING_free(seq);
	370	OPENSSL_free(pp);
	371	return 0;
	372	}
	373
	374	/*
8c00f267	375	* Add signer certificate's digest \|sc\| to a SignerInfo structure \|si\|
e85d19c6 AI	376	*/
e85d19c6 AI	377
8c00f267	378	int cms_add1_signing_cert(CMS_SignerInfo si, ESS_SIGNING_CERT sc)
e85d19c6 AI	379	{
	380	ASN1_STRING *seq = NULL;
	381	unsigned char p, pp;
	382	int len;
	383
	384	/* Add SigningCertificate signed attribute to the signer info. */
	385	len = i2d_ESS_SIGNING_CERT(sc, NULL);
	386	if ((pp = OPENSSL_malloc(len)) == NULL)
	387	goto err;
	388	p = pp;
	389	i2d_ESS_SIGNING_CERT(sc, &p);
	390	if (!(seq = ASN1_STRING_new()) \|\| !ASN1_STRING_set(seq, pp, len))
	391	goto err;
	392	OPENSSL_free(pp);
	393	pp = NULL;
	394	if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_signingCertificate,
	395	V_ASN1_SEQUENCE, seq, -1))
	396	goto err;
	397	ASN1_STRING_free(seq);
	398	return 1;
	399	err:
	400	CMSerr(CMS_F_CMS_ADD1_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
	401	ASN1_STRING_free(seq);
	402	OPENSSL_free(pp);
	403	return 0;
	404	}