/* Allocate the SCEP_MSG empty structures */
SCEP_MSG *SCEP_MSG_new_null( void ) {
SCEP_MSG *msg = NULL;
PKCS7_SIGNER_INFO *si = NULL;
/* Allocate memory */
msg = (SCEP_MSG *) malloc ( sizeof(SCEP_MSG) );
/* Signer Data */
msg->sk_signer_info = NULL;
msg->sk_others = NULL;
msg->signer_ias = NULL;
msg->signer_cert = NULL;
msg->attrs = sk_X509_ATTRIBUTE_new_null();
/* Enveloped Data */
msg->env_data.NID_p7data = NID_pkcs7_signedAndEnveloped;
msg->env_data.p7env = NULL;
/* Enveloped Data Recipient */
msg->env_data.recip_info.sk_recip_info = NULL;
msg->env_data.recip_info.sk_recip_certs = NULL;
msg->env_data.recip_info.ias = NULL;
/* Enveloped Data CRL */
msg->env_data.crl = NULL;
/* Algorithm and signer info */
msg->sk_signer_info = sk_PKCS7_SIGNER_INFO_new_null();
return (msg);
err:
if( msg ) OPENSSL_free (msg);
return(NULL);
}
static int openssl_new_xattrs(lua_State*L)
{
size_t i;
int idx = 1;
STACK_OF(X509_ATTRIBUTE) *attrs = sk_X509_ATTRIBUTE_new_null();
luaL_checktable(L, idx);
for (i = 0; i < lua_rawlen(L, idx); i++)
{
X509_ATTRIBUTE* a = NULL;
const char* eprefix = NULL;
lua_rawgeti(L, idx, i + 1);
if (!lua_istable(L, -1))
{
lua_pushfstring(L, "value at %d is not table", i + 1);
luaL_argerror(L, idx, lua_tostring(L, -1));
}
lua_pushfstring(L, "table %d at argument #%d:", idx, i + 1);
eprefix = lua_tostring(L, -1);
lua_pop(L, 1);
a = openssl_new_xattribute(L, &a, lua_gettop(L), eprefix);
if (a)
{
sk_X509_ATTRIBUTE_push(attrs, a);
}
lua_pop(L, 1);
}
PUSH_OBJECT(attrs, "openssl.stack_of_x509_attribute");
return 1;
}
static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
void *exarg)
{
X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval;
if(operation == ASN1_OP_NEW_POST) {
rinf->attributes = sk_X509_ATTRIBUTE_new_null();
if(!rinf->attributes) return 0;
}
return 1;
}
static int openssl_new_xattrs(lua_State*L)
{
size_t i;
int idx = 1;
int utf8 = lua_isnoneornil(L, 2) ? 1 : lua_toboolean(L, 2);
STACK_OF(X509_ATTRIBUTE) *attrs = sk_X509_ATTRIBUTE_new_null();
luaL_checktable(L, idx);
for(i=0; i<lua_rawlen(L, idx); i++)
{
X509_ATTRIBUTE* a = NULL;
lua_rawgeti(L, idx, i+1);
a = openssl_new_xattribute(L, &a, -1,utf8);
if(a) {
sk_X509_ATTRIBUTE_push(attrs,a);
}
lua_pop(L,1);
}
PUSH_OBJECT(attrs, "openssl.stack_of_x509_attribute");
return 1;
}
CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
unsigned int flags)
{
CMS_SignedData *sd;
CMS_SignerInfo *si = NULL;
X509_ALGOR *alg;
int i, type;
if(!X509_check_private_key(signer, pk))
{
CMSerr(CMS_F_CMS_ADD1_SIGNER,
CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
return NULL;
}
sd = cms_signed_data_init(cms);
if (!sd)
goto err;
si = M_ASN1_new_of(CMS_SignerInfo);
if (!si)
goto merr;
X509_check_purpose(signer, -1, -1);
CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY);
CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509);
si->pkey = pk;
si->signer = signer;
if (flags & CMS_USE_KEYID)
{
si->version = 3;
if (sd->version < 3)
sd->version = 3;
type = CMS_SIGNERINFO_KEYIDENTIFIER;
}
else
{
type = CMS_SIGNERINFO_ISSUER_SERIAL;
si->version = 1;
}
if (!cms_set1_SignerIdentifier(si->sid, signer, type))
goto err;
/* Since no EVP_PKEY_METHOD in 0.9.8 hard code SHA1 as default */
if (md == NULL)
md = EVP_sha1();
/* OpenSSL 0.9.8 only supports SHA1 with non-RSA keys */
if ((pk->type != EVP_PKEY_RSA) && (EVP_MD_type(md) != NID_sha1))
{
CMSerr(CMS_F_CMS_ADD1_SIGNER,
CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
goto err;
}
cms_DigestAlgorithm_set(si->digestAlgorithm, md);
/* See if digest is present in digestAlgorithms */
for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++)
{
ASN1_OBJECT *aoid;
alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
X509_ALGOR_get0(&aoid, NULL, NULL, alg);
if (OBJ_obj2nid(aoid) == EVP_MD_type(md))
break;
}
if (i == sk_X509_ALGOR_num(sd->digestAlgorithms))
{
alg = X509_ALGOR_new();
if (!alg)
goto merr;
cms_DigestAlgorithm_set(alg, md);
if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg))
{
X509_ALGOR_free(alg);
goto merr;
}
}
/* Since we have no EVP_PKEY_ASN1_METHOD in OpenSSL 0.9.8,
* hard code algorithm parameters.
*/
switch (pk->type)
{
case EVP_PKEY_RSA:
X509_ALGOR_set0(si->signatureAlgorithm,
OBJ_nid2obj(NID_rsaEncryption),
V_ASN1_NULL, 0);
break;
case EVP_PKEY_DSA:
X509_ALGOR_set0(si->signatureAlgorithm,
OBJ_nid2obj(NID_dsaWithSHA1),
V_ASN1_UNDEF, 0);
break;
case EVP_PKEY_EC:
X509_ALGOR_set0(si->signatureAlgorithm,
OBJ_nid2obj(NID_ecdsa_with_SHA1),
V_ASN1_UNDEF, 0);
break;
default:
CMSerr(CMS_F_CMS_ADD1_SIGNER,
CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
goto err;
}
if (!(flags & CMS_NOATTR))
{
/* Initialialize signed attributes strutucture so other
* attributes such as signing time etc are added later
* even if we add none here.
*/
if (!si->signedAttrs)
{
si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
if (!si->signedAttrs)
goto merr;
}
if (!(flags & CMS_NOSMIMECAP))
{
STACK_OF(X509_ALGOR) *smcap = NULL;
i = CMS_add_standard_smimecap(&smcap);
if (i)
i = CMS_add_smimecap(si, smcap);
sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
if (!i)
goto merr;
}
if (flags & CMS_REUSE_DIGEST)
{
if (!cms_copy_messageDigest(cms, si))
goto err;
if (!(flags & CMS_PARTIAL) &&
!CMS_SignerInfo_sign(si))
goto err;
}
}
if (!(flags & CMS_NOCERTS))
{
/* NB ignore -1 return for duplicate cert */
if (!CMS_add1_cert(cms, signer))
goto merr;
}
if (!sd->signerInfos)
sd->signerInfos = sk_CMS_SignerInfo_new_null();
if (!sd->signerInfos ||
!sk_CMS_SignerInfo_push(sd->signerInfos, si))
goto merr;
return si;
merr:
CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
err:
if (si)
M_ASN1_free_of(si, CMS_SignerInfo);
return NULL;
}
CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
unsigned int flags)
{
CMS_SignedData *sd;
CMS_SignerInfo *si = NULL;
X509_ALGOR *alg;
int i, type;
if (!X509_check_private_key(signer, pk)) {
CMSerr(CMS_F_CMS_ADD1_SIGNER,
CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
return NULL;
}
sd = cms_signed_data_init(cms);
if (!sd)
goto err;
si = M_ASN1_new_of(CMS_SignerInfo);
if (!si)
goto merr;
/* Call for side-effect of computing hash and caching extensions */
X509_check_purpose(signer, -1, -1);
X509_up_ref(signer);
EVP_PKEY_up_ref(pk);
si->pkey = pk;
si->signer = signer;
si->mctx = EVP_MD_CTX_new();
si->pctx = NULL;
if (si->mctx == NULL) {
CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
goto err;
}
if (flags & CMS_USE_KEYID) {
si->version = 3;
if (sd->version < 3)
sd->version = 3;
type = CMS_SIGNERINFO_KEYIDENTIFIER;
} else {
type = CMS_SIGNERINFO_ISSUER_SERIAL;
si->version = 1;
}
if (!cms_set1_SignerIdentifier(si->sid, signer, type))
goto err;
if (md == NULL) {
int def_nid;
if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
goto err;
md = EVP_get_digestbynid(def_nid);
if (md == NULL) {
CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST);
goto err;
}
}
if (!md) {
CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET);
goto err;
}
X509_ALGOR_set_md(si->digestAlgorithm, md);
/* See if digest is present in digestAlgorithms */
for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
const ASN1_OBJECT *aoid;
alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
X509_ALGOR_get0(&aoid, NULL, NULL, alg);
if (OBJ_obj2nid(aoid) == EVP_MD_type(md))
break;
}
if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
alg = X509_ALGOR_new();
if (alg == NULL)
goto merr;
X509_ALGOR_set_md(alg, md);
if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
X509_ALGOR_free(alg);
goto merr;
}
}
if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0))
goto err;
if (!(flags & CMS_NOATTR)) {
/*
* Initialize signed attributes structure so other attributes
* such as signing time etc are added later even if we add none here.
*/
if (!si->signedAttrs) {
si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
if (!si->signedAttrs)
goto merr;
}
if (!(flags & CMS_NOSMIMECAP)) {
STACK_OF(X509_ALGOR) *smcap = NULL;
i = CMS_add_standard_smimecap(&smcap);
if (i)
i = CMS_add_smimecap(si, smcap);
sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
if (!i)
goto merr;
}
if (flags & CMS_REUSE_DIGEST) {
if (!cms_copy_messageDigest(cms, si))
goto err;
if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) &&
!CMS_SignerInfo_sign(si))
goto err;
}
}
if (!(flags & CMS_NOCERTS)) {
/* NB ignore -1 return for duplicate cert */
if (!CMS_add1_cert(cms, signer))
goto merr;
}
if (flags & CMS_KEY_PARAM) {
if (flags & CMS_NOATTR) {
si->pctx = EVP_PKEY_CTX_new(si->pkey, NULL);
if (si->pctx == NULL)
goto err;
if (EVP_PKEY_sign_init(si->pctx) <= 0)
goto err;
if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0)
goto err;
} else if (EVP_DigestSignInit(si->mctx, &si->pctx, md, NULL, pk) <=
0)
goto err;
}
if (!sd->signerInfos)
sd->signerInfos = sk_CMS_SignerInfo_new_null();
if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si))
goto merr;
return si;
merr:
CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
err:
M_ASN1_free_of(si, CMS_SignerInfo);
return NULL;
}
/*******************************************************************************
函数名称: cert_pkcs7_wrap
功能描述: 将要发送的消息采用PKCS#7格式进行编码
输入参数: struct scep *s, SCEP操作的结构体指针。
s32 hasra, 是否使用RA证书，1,使用；0，不使用
输出参数: 无
返 回 值: 1,成功；-1，失败
--------------------------------------------------------------------------------
最近一次修改记录:
修改作者:王朝
修改目的:添加新函数
修改日期:2009年12月28日
*********************************************************************************/
s32 cert_pkcs7_wrap(struct scep *s, s32 hasra)
{
BIO *databio = NULL;
BIO *encbio = NULL;
BIO *pkcs7bio = NULL;
BIO *memorybio = NULL;
BIO *outbio = NULL;
BIO *base64bio = NULL;
u8 *buffer = NULL;
s32 len = 0;
STACK_OF(X509) *recipients = NULL;
PKCS7 *p7enc = NULL;
PKCS7_SIGNER_INFO *si = NULL;
STACK_OF(X509_ATTRIBUTE) *attributes = NULL;
X509 *signercert = NULL;
EVP_PKEY *signerkey = NULL;
s32 retval = -1;
/* sender nonce */
s->sender_nonce_len = 16;
s->sender_nonce = (u8 *)malloc((u32)s->sender_nonce_len);
RAND_bytes(s->sender_nonce, s->sender_nonce_len);
/* Prepare data payload */
switch(s->request_type)
{
case SCEP_REQUEST_PKCSREQ:
s->request_type_str = SCEP_REQUEST_PKCSREQ_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Read request in memory bio */
databio = BIO_new(BIO_s_mem());
if ((i2d_X509_REQ_bio(databio, cert_request)) <= 0)
{
goto end;
}
(void)BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
case SCEP_REQUEST_GETCERTINIT:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCERTINIT_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if ((i2d_pkcs7_issuer_and_subject_bio(databio, s->ias_getcertinit)) <= 0)
{
goto end;
}
(void)BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
default:
goto end;
}
/* Below this is the common code for all request_type */
/* Read in the payload */
s->request_len = BIO_get_mem_data(databio, &s->request_payload);
BIO_free(databio);
databio = NULL;
/* Create encryption certificate stack */
if (NULL == (recipients = sk_X509_new_null() ))
{
goto end;
}
/* Use different CA cert for encryption if requested */
if (1 == hasra)
{
if (sk_X509_push(recipients, cert_encert) <= 0)
{
goto end;
}
}
else
{
/* Use same CA cert also for encryption */
if (sk_X509_push(recipients, cert_cacert) <= 0)
{
goto end;
}
}
/* Create BIO for encryption */
if ((encbio = BIO_new_mem_buf(s->request_payload,s->request_len)) == NULL)
{
goto end;
}
/* Encrypt */
if (NULL == (p7enc = PKCS7_encrypt(recipients, encbio, cert_enc_alg, PKCS7_BINARY)))
{
goto end;
}
BIO_free(encbio);
encbio = NULL;
sk_X509_free(recipients);
recipients = NULL;
/* Write encrypted data */
memorybio = BIO_new(BIO_s_mem());
if (i2d_PKCS7_bio(memorybio, p7enc) <= 0)
{
goto end;
}
PKCS7_free(p7enc);
p7enc = NULL;
(void)BIO_flush(memorybio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
len = BIO_get_mem_data(memorybio, &buffer);
/* Create outer PKCS#7 */
s->request_p7 = PKCS7_new();
if (s->request_p7 == NULL)
{
goto end;
}
if (!PKCS7_set_type(s->request_p7, NID_pkcs7_signed))
{
goto end;
}
/* Add signer certificate and signature */
PKCS7_add_certificate(s->request_p7, signercert);
if ((si = PKCS7_add_signature(s->request_p7,signercert, signerkey, cert_sig_alg)) == NULL)
{
goto end;
}
/* Set signed attributes */
attributes = sk_X509_ATTRIBUTE_new_null();
cert_add_attribute_string(attributes, nid_transId, s->transaction_id);
cert_add_attribute_string(attributes, nid_messageType, s->request_type_str);
cert_add_attribute_octet(attributes, nid_senderNonce, (s8 *)(s->sender_nonce),s->sender_nonce_len);
PKCS7_set_signed_attributes(si, attributes);
sk_X509_ATTRIBUTE_free(attributes);
attributes = NULL;
/* Add contentType */
if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data)))
{
goto end;
}
/* Create new content */
if (!PKCS7_content_new(s->request_p7, NID_pkcs7_data))
{
goto end;
}
/* Write data */
pkcs7bio = PKCS7_dataInit(s->request_p7, NULL);
if (pkcs7bio == NULL)
{
goto end;
}
if (len != BIO_write(pkcs7bio, buffer, len))
{
goto end;
}
BIO_free(memorybio);
memorybio = NULL;
/* Finalize PKCS#7 */
if (!PKCS7_dataFinal(s->request_p7, pkcs7bio))
{
goto end;
}
/* base64-encode the data */
/* Create base64 filtering bio */
memorybio = BIO_new(BIO_s_mem());
base64bio = BIO_new(BIO_f_base64());
outbio = BIO_push(base64bio, memorybio);
/* Copy PKCS#7 */
i2d_PKCS7_bio(outbio, s->request_p7);
(void)BIO_flush(outbio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
s->request_len = BIO_get_mem_data(memorybio, &s->request_payload);
retval = 1;
end:
if(NULL != databio)
{
BIO_free(databio);
}
if(NULL != encbio)
{
BIO_free(encbio);
}
if(NULL != p7enc)
{
PKCS7_free(p7enc);
}
if(NULL != pkcs7bio)
{
BIO_free(pkcs7bio);
}
if(NULL != memorybio)
{
BIO_free(memorybio);
}
if(NULL != base64bio)
{
BIO_free(base64bio);
}
if(NULL != recipients)
{
sk_X509_free(recipients);
}
if(NULL != attributes)
{
sk_X509_ATTRIBUTE_free(attributes);
}
return retval;
}
CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms,
X509 *signer, EVP_PKEY *pk, const EVP_MD *md,
unsigned int flags)
{
CMS_SignedData *sd;
CMS_SignerInfo *si = NULL;
X509_ALGOR *alg;
int i, type;
if (!X509_check_private_key(signer, pk)) {
CMSerr(CMS_F_CMS_ADD1_SIGNER,
CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
return NULL;
}
sd = cms_signed_data_init(cms);
if (!sd)
goto err;
si = M_ASN1_new_of(CMS_SignerInfo);
if (!si)
goto merr;
X509_check_purpose(signer, -1, -1);
CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY);
CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509);
si->pkey = pk;
si->signer = signer;
if (flags & CMS_USE_KEYID) {
si->version = 3;
if (sd->version < 3)
sd->version = 3;
type = CMS_SIGNERINFO_KEYIDENTIFIER;
} else {
type = CMS_SIGNERINFO_ISSUER_SERIAL;
si->version = 1;
}
if (!cms_set1_SignerIdentifier(si->sid, signer, type))
goto err;
if (md == NULL) {
int def_nid;
if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0)
goto err;
md = EVP_get_digestbynid(def_nid);
if (md == NULL) {
CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST);
goto err;
}
}
if (!md) {
CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET);
goto err;
}
cms_DigestAlgorithm_set(si->digestAlgorithm, md);
/* See if digest is present in digestAlgorithms */
for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) {
ASN1_OBJECT *aoid;
alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i);
X509_ALGOR_get0(&aoid, NULL, NULL, alg);
if (OBJ_obj2nid(aoid) == EVP_MD_type(md))
break;
}
if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) {
alg = X509_ALGOR_new();
if (!alg)
goto merr;
cms_DigestAlgorithm_set(alg, md);
if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) {
X509_ALGOR_free(alg);
goto merr;
}
}
if (pk->ameth && pk->ameth->pkey_ctrl) {
i = pk->ameth->pkey_ctrl(pk, ASN1_PKEY_CTRL_CMS_SIGN, 0, si);
if (i == -2) {
CMSerr(CMS_F_CMS_ADD1_SIGNER,
CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
goto err;
}
if (i <= 0) {
CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_CTRL_FAILURE);
goto err;
}
}
if (!(flags & CMS_NOATTR)) {
/*
* Initialialize signed attributes strutucture so other attributes
* such as signing time etc are added later even if we add none here.
*/
if (!si->signedAttrs) {
si->signedAttrs = sk_X509_ATTRIBUTE_new_null();
if (!si->signedAttrs)
goto merr;
}
if (!(flags & CMS_NOSMIMECAP)) {
STACK_OF(X509_ALGOR) *smcap = NULL;
i = CMS_add_standard_smimecap(&smcap);
if (i)
i = CMS_add_smimecap(si, smcap);
sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free);
if (!i)
goto merr;
}
if (flags & CMS_REUSE_DIGEST) {
if (!cms_copy_messageDigest(cms, si))
goto err;
if (!(flags & CMS_PARTIAL) && !CMS_SignerInfo_sign(si))
goto err;
}
}
if (!(flags & CMS_NOCERTS)) {
/* NB ignore -1 return for duplicate cert */
if (!CMS_add1_cert(cms, signer))
goto merr;
}
if (!sd->signerInfos)
sd->signerInfos = sk_CMS_SignerInfo_new_null();
if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si))
goto merr;
return si;
merr:
CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE);
err:
if (si)
M_ASN1_free_of(si, CMS_SignerInfo);
return NULL;
}
/*
* Wrap data in PKCS#7 envelopes and base64-encode the result.
* Data is PKCS#10 request in PKCSReq, or pkcs7_issuer_and_subject
* structure in GetCertInitial and PKCS7_ISSUER_AND_SERIAL in
* GetCert and GETCrl.
*/
int pkcs7_wrap(struct scep *s, struct sscep_ctx *ctx, struct sscep_operation_info *op_info)
{
BIO *databio = NULL;
BIO *encbio = NULL;
BIO *pkcs7bio = NULL;
BIO *memorybio = NULL;
BIO *outbio = NULL;
unsigned char *buffer = NULL;
int len = 0;
STACK_OF(X509) *recipients = NULL;
PKCS7 *p7enc = NULL;
PKCS7_SIGNER_INFO *si;
STACK_OF(X509_ATTRIBUTE) *attributes;
X509 *signercert = NULL;
EVP_PKEY *signerkey = NULL;
int ret = SCEP_PKISTATUS_P7;
char *payload = NULL;
int payload_len;
/* Create a new sender nonce for all messages
* XXXXXXXXXXXXXX should it be per transaction? */
s->sender_nonce_len = 16;
free(s->sender_nonce);/* Clean up from previous runs */
s->sender_nonce = (char *)malloc(s->sender_nonce_len * sizeof(char));
RAND_bytes((unsigned char *) s->sender_nonce, s->sender_nonce_len);
/* Prepare data payload */
switch (s->request_type) {
case SCEP_REQUEST_PKCSREQ:
/*
* Set printable message type
* We set this later as an autheticated attribute
* "messageType".
*/
s->request_type_str = SCEP_REQUEST_PKCSREQ_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (ctx->verbose){
qeo_log_i("creating inner PKCS#7");
}
/* Read request in memory bio */
databio = BIO_new(BIO_s_mem());
if (i2d_X509_REQ_bio(databio, op_info->request) <= 0) {
qeo_log_e("error writing certificate request in bio");
goto error;
}
(void)BIO_flush(databio);
break;
case SCEP_REQUEST_GETCERTINIT:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCERTINIT_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (ctx->verbose){
qeo_log_i("creating inner PKCS#7");
}
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if (i2d_pkcs7_issuer_and_subject_bio(databio, s->ias_getcertinit)) {
qeo_log_e("error writing GetCertInitial data in bio");
goto error;
}
(void)BIO_flush(databio);
break;
}
/* Below this is the common code for all request_type */
/* Read in the payload */
payload_len = BIO_get_mem_data(databio, &payload);
if (ctx->verbose){
qeo_log_i("data payload size: %d bytes", payload_len);
}
/* Create encryption certificate stack */
if ((recipients = sk_X509_new(NULL) ) == NULL) {
qeo_log_e("error creating certificate stack");
goto error;
}
if (sk_X509_push(recipients, op_info->racert) <= 0) {
qeo_log_e("error adding recipient encryption certificate");
goto error;
}
/* Create BIO for encryption */
if ((encbio = BIO_new_mem_buf(payload, payload_len)) == NULL ) {
qeo_log_e("error creating data bio");
goto error;
}
/* Encrypt */
if (!(p7enc = PKCS7_encrypt(recipients, encbio, ctx->enc_alg, PKCS7_BINARY))) {
qeo_log_e("request payload encrypt failed");
goto error;
}
if (ctx->verbose){
qeo_log_i("successfully encrypted payload");
}
/* Write encrypted data */
memorybio = BIO_new(BIO_s_mem());
if (i2d_PKCS7_bio(memorybio, p7enc) <= 0) {
qeo_log_e("error writing encrypted data");
goto error;
}
(void)BIO_flush(memorybio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
len = BIO_get_mem_data(memorybio, &buffer);
BIO_free(memorybio);
memorybio=NULL;
if (ctx->verbose){
qeo_log_i("envelope size: %d bytes", len);
}
if (ctx->debug) {
qeo_log_i("printing PEM fomatted PKCS#7");
PEM_write_PKCS7(stdout, p7enc);
}
/* Create outer PKCS#7 */
if (ctx->verbose){
qeo_log_i("creating outer PKCS#7");
}
s->request_p7 = PKCS7_new();
if (s->request_p7 == NULL ) {
qeo_log_e("failed creating PKCS#7 for signing");
goto error;
}
if (!PKCS7_set_type(s->request_p7, NID_pkcs7_signed)) {
qeo_log_e("failed setting PKCS#7 type");
goto error;
}
/* Add signer certificate and signature */
PKCS7_add_certificate(s->request_p7, signercert);
if ((si = PKCS7_add_signature(s->request_p7, signercert, signerkey, ctx->sig_alg)) == NULL ) {
qeo_log_e("error adding PKCS#7 signature");
goto error;
}
if (ctx->verbose){
qeo_log_i("signature added successfully");
}
/* Set signed attributes */
if (ctx->verbose){
qeo_log_i("adding signed attributes");
}
attributes = sk_X509_ATTRIBUTE_new_null();
add_attribute_string(attributes, ctx->nid_transId, s->transaction_id, ctx);
add_attribute_string(attributes, ctx->nid_messageType, s->request_type_str, ctx);
add_attribute_octet(attributes, ctx->nid_senderNonce, s->sender_nonce, s->sender_nonce_len, ctx);
PKCS7_set_signed_attributes(si, attributes);
sk_X509_ATTRIBUTE_pop_free(attributes, X509_ATTRIBUTE_free);
/* Add contentType */
if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data))) {
qeo_log_e("error adding NID_pkcs9_contentType");
goto error;
}
/* Create new content */
if (!PKCS7_content_new(s->request_p7, NID_pkcs7_data)) {
qeo_log_e("failed setting PKCS#7 content type");
goto error;
}
/* Write data */
pkcs7bio = PKCS7_dataInit(s->request_p7, NULL );
if (pkcs7bio == NULL ) {
qeo_log_e("error opening bio for writing PKCS#7 data");
goto error;
}
if (len != BIO_write(pkcs7bio, buffer, len)) {
qeo_log_e("error writing PKCS#7 data");
goto error;
}
if (ctx->verbose){
qeo_log_i("PKCS#7 data written successfully");
}
/* Finalize PKCS#7 */
if (!PKCS7_dataFinal(s->request_p7, pkcs7bio)) {
qeo_log_e("error finalizing outer PKCS#7");
goto error;
}
if (ctx->debug) {
qeo_log_i("printing PEM fomatted PKCS#7");
PEM_write_PKCS7(stdout, s->request_p7);
}
/* base64-encode the data */
if (ctx->verbose){
qeo_log_i("applying base64 encoding");
}
/* Create base64 filtering bio */
memorybio = BIO_new(BIO_s_mem());
outbio = BIO_push(BIO_new(BIO_f_base64()), memorybio);
/* Copy PKCS#7 */
i2d_PKCS7_bio(outbio, s->request_p7);
(void)BIO_flush(outbio);
payload_len = BIO_get_mem_data(memorybio, &payload);
s->request_payload = (char*) malloc(sizeof(char)*payload_len);
if (!s->request_payload){
goto error;
}
s->request_len = payload_len;
memcpy(s->request_payload, payload, s->request_len);
if (ctx->verbose){
qeo_log_i("base64 encoded payload size: %d bytes", payload_len);
}
ret = 0;
error:
BIO_free(databio);
BIO_free(encbio);
BIO_free_all(pkcs7bio);
BIO_free(memorybio);
BIO_free(outbio);
if (recipients != NULL){
sk_X509_free(recipients);/* Only free the stack, not the certificates */
}
PKCS7_free(p7enc);
OPENSSL_free(buffer);
return ret;
}
/*
* Wrap data in PKCS#7 envelopes and base64-encode the result.
* Data is PKCS#10 request in PKCSReq, or pkcs7_issuer_and_subject
* structure in GetCertInitial and PKCS7_ISSUER_AND_SERIAL in
* GetCert and GETCrl.
*/
int pkcs7_wrap(struct scep *s) {
BIO *databio = NULL;
BIO *encbio = NULL;
BIO *pkcs7bio = NULL;
BIO *memorybio = NULL;
BIO *outbio = NULL;
BIO *base64bio = NULL;
unsigned char *buffer = NULL;
int rc, len = 0;
STACK_OF(X509) *recipients;
PKCS7 *p7enc;
PKCS7_SIGNER_INFO *si;
STACK_OF(X509_ATTRIBUTE) *attributes;
X509 *signercert = NULL;
EVP_PKEY *signerkey = NULL;
/* Create a new sender nonce for all messages
* XXXXXXXXXXXXXX should it be per transaction? */
s->sender_nonce_len = 16;
s->sender_nonce = (unsigned char *)malloc(s->sender_nonce_len);
RAND_bytes(s->sender_nonce, s->sender_nonce_len);
/* Prepare data payload */
switch(s->request_type) {
case SCEP_REQUEST_PKCSREQ:
/*
* Set printable message type
* We set this later as an autheticated attribute
* "messageType".
*/
s->request_type_str = SCEP_REQUEST_PKCSREQ_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (v_flag)
printf("%s: creating inner PKCS#7\n", pname);
/* Read request in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_X509_REQ_bio(databio, request)) <= 0) {
fprintf(stderr, "%s: error writing "
"certificate request in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
case SCEP_REQUEST_GETCERTINIT:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCERTINIT_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (v_flag)
printf("%s: creating inner PKCS#7\n", pname);
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_pkcs7_issuer_and_subject_bio(databio,
s->ias_getcertinit)) <= 0) {
fprintf(stderr, "%s: error writing "
"GetCertInitial data in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
case SCEP_REQUEST_GETCERT:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCERT_STR;
/* Signer cert */
signercert = localcert;
signerkey = rsa;
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_PKCS7_ISSUER_AND_SERIAL_bio(databio,
s->ias_getcert)) <= 0) {
fprintf(stderr, "%s: error writing "
"GetCert data in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
case SCEP_REQUEST_GETCRL:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCRL_STR;
/* Signer cert */
signercert = localcert;
signerkey = rsa;
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_PKCS7_ISSUER_AND_SERIAL_bio(databio,
s->ias_getcrl)) <= 0) {
fprintf(stderr, "%s: error writing "
"GetCert data in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
}
/* Below this is the common code for all request_type */
/* Read in the payload */
s->request_len = BIO_get_mem_data(databio, &s->request_payload);
if (v_flag)
printf("%s: data payload size: %d bytes\n", pname,
s->request_len);
BIO_free(databio);
/* Create encryption certificate stack */
if ((recipients = sk_X509_new(NULL)) == NULL) {
fprintf(stderr, "%s: error creating "
"certificate stack\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Use different CA cert for encryption if requested */
if (e_flag) {
if (sk_X509_push(recipients, encert) <= 0) {
fprintf(stderr, "%s: error adding recipient encryption "
"certificate\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Use same CA cert also for encryption */
} else {
if (sk_X509_push(recipients, cacert) <= 0) {
fprintf(stderr, "%s: error adding recipient encryption "
"certificate\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
}
/* Create BIO for encryption */
if ((encbio = BIO_new_mem_buf(s->request_payload,
s->request_len)) == NULL) {
fprintf(stderr, "%s: error creating data " "bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Encrypt */
if (!(p7enc = PKCS7_encrypt(recipients, encbio,
enc_alg, PKCS7_BINARY))) {
fprintf(stderr, "%s: request payload encrypt failed\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: successfully encrypted payload\n", pname);
/* Write encrypted data */
memorybio = BIO_new(BIO_s_mem());
if (i2d_PKCS7_bio(memorybio, p7enc) <= 0) {
fprintf(stderr, "%s: error writing encrypted data\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(memorybio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
len = BIO_get_mem_data(memorybio, &buffer);
if (v_flag)
printf("%s: envelope size: %d bytes\n", pname, len);
if (d_flag) {
printf("%s: printing PEM fomatted PKCS#7\n", pname);
PEM_write_PKCS7(stdout, p7enc);
}
BIO_free(memorybio);
/* Create outer PKCS#7 */
if (v_flag)
printf("%s: creating outer PKCS#7\n", pname);
s->request_p7 = PKCS7_new();
if (s->request_p7 == NULL) {
fprintf(stderr, "%s: failed creating PKCS#7 for signing\n",
pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (!PKCS7_set_type(s->request_p7, NID_pkcs7_signed)) {
fprintf(stderr, "%s: failed setting PKCS#7 type\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Add signer certificate and signature */
PKCS7_add_certificate(s->request_p7, signercert);
if ((si = PKCS7_add_signature(s->request_p7,
signercert, signerkey, sig_alg)) == NULL) {
fprintf(stderr, "%s: error adding PKCS#7 signature\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: signature added successfully\n", pname);
/* Set signed attributes */
if (v_flag)
printf("%s: adding signed attributes\n", pname);
attributes = sk_X509_ATTRIBUTE_new_null();
add_attribute_string(attributes, nid_transId, s->transaction_id);
add_attribute_string(attributes, nid_messageType, s->request_type_str);
add_attribute_octet(attributes, nid_senderNonce, s->sender_nonce,
s->sender_nonce_len);
PKCS7_set_signed_attributes(si, attributes);
/* Add contentType */
if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data))) {
fprintf(stderr, "%s: error adding NID_pkcs9_contentType\n",
pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Create new content */
if (!PKCS7_content_new(s->request_p7, NID_pkcs7_data)) {
fprintf(stderr, "%s: failed setting PKCS#7 content type\n",
pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Write data */
pkcs7bio = PKCS7_dataInit(s->request_p7, NULL);
if (pkcs7bio == NULL) {
fprintf(stderr, "%s: error opening bio for writing PKCS#7 "
"data\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (len != BIO_write(pkcs7bio, buffer, len)) {
fprintf(stderr, "%s: error writing PKCS#7 data\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: PKCS#7 data written successfully\n", pname);
/* Finalize PKCS#7 */
if (!PKCS7_dataFinal(s->request_p7, pkcs7bio)) {
fprintf(stderr, "%s: error finalizing outer PKCS#7\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (d_flag) {
printf("%s: printing PEM fomatted PKCS#7\n", pname);
PEM_write_PKCS7(stdout, s->request_p7);
}
/* base64-encode the data */
if (v_flag)
printf("%s: applying base64 encoding\n",pname);
/* Create base64 filtering bio */
memorybio = BIO_new(BIO_s_mem());
base64bio = BIO_new(BIO_f_base64());
outbio = BIO_push(base64bio, memorybio);
/* Copy PKCS#7 */
i2d_PKCS7_bio(outbio, s->request_p7);
BIO_flush(outbio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
s->request_len = BIO_get_mem_data(memorybio, &s->request_payload);
if (v_flag)
printf("%s: base64 encoded payload size: %d bytes\n",
pname, s->request_len);
BIO_free(outbio);
return (0);
}