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/*
* Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (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 <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/pkcs12.h>
#include "p12_local.h"
static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
PKCS12_SAFEBAG *bag);
static int copy_bag_attr(PKCS12_SAFEBAG *bag, EVP_PKEY *pkey, int nid)
{
int idx;
X509_ATTRIBUTE *attr;
idx = EVP_PKEY_get_attr_by_NID(pkey, nid, -1);
if (idx < 0)
return 1;
attr = EVP_PKEY_get_attr(pkey, idx);
if (!X509at_add1_attr(&bag->attrib, attr))
return 0;
return 1;
}
PKCS12 *PKCS12_create(const char *pass, const char *name, EVP_PKEY *pkey, X509 *cert,
STACK_OF(X509) *ca, int nid_key, int nid_cert, int iter,
int mac_iter, int keytype)
{
PKCS12 *p12 = NULL;
STACK_OF(PKCS7) *safes = NULL;
STACK_OF(PKCS12_SAFEBAG) *bags = NULL;
PKCS12_SAFEBAG *bag = NULL;
int i;
unsigned char keyid[EVP_MAX_MD_SIZE];
unsigned int keyidlen = 0;
/* Set defaults */
if (!nid_cert)
#ifdef OPENSSL_NO_RC2
nid_cert = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
#else
nid_cert = NID_pbe_WithSHA1And40BitRC2_CBC;
#endif
if (!nid_key)
nid_key = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
if (!iter)
iter = PKCS12_DEFAULT_ITER;
if (!mac_iter)
mac_iter = 1;
if (!pkey && !cert && !ca) {
PKCS12err(PKCS12_F_PKCS12_CREATE, PKCS12_R_INVALID_NULL_ARGUMENT);
return NULL;
}
if (pkey && cert) {
if (!X509_check_private_key(cert, pkey))
return NULL;
if (!X509_digest(cert, EVP_sha1(), keyid, &keyidlen))
return NULL;
}
if (cert) {
bag = PKCS12_add_cert(&bags, cert);
if (name && !PKCS12_add_friendlyname(bag, name, -1))
goto err;
if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
goto err;
}
/* Add all other certificates */
for (i = 0; i < sk_X509_num(ca); i++) {
if (!PKCS12_add_cert(&bags, sk_X509_value(ca, i)))
goto err;
}
if (bags && !PKCS12_add_safe(&safes, bags, nid_cert, iter, pass))
goto err;
sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
bags = NULL;
if (pkey) {
bag = PKCS12_add_key(&bags, pkey, keytype, iter, nid_key, pass);
if (!bag)
goto err;
if (!copy_bag_attr(bag, pkey, NID_ms_csp_name))
goto err;
if (!copy_bag_attr(bag, pkey, NID_LocalKeySet))
goto err;
if (name && !PKCS12_add_friendlyname(bag, name, -1))
goto err;
if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
goto err;
}
if (bags && !PKCS12_add_safe(&safes, bags, -1, 0, NULL))
goto err;
sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
bags = NULL;
p12 = PKCS12_add_safes(safes, 0);
if (!p12)
goto err;
sk_PKCS7_pop_free(safes, PKCS7_free);
safes = NULL;
if ((mac_iter != -1) &&
!PKCS12_set_mac(p12, pass, -1, NULL, 0, mac_iter, NULL))
goto err;
return p12;
err:
PKCS12_free(p12);
sk_PKCS7_pop_free(safes, PKCS7_free);
sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
return NULL;
}
PKCS12_SAFEBAG *PKCS12_add_cert(STACK_OF(PKCS12_SAFEBAG) **pbags, X509 *cert)
{
PKCS12_SAFEBAG *bag = NULL;
char *name;
int namelen = -1;
unsigned char *keyid;
int keyidlen = -1;
/* Add user certificate */
if ((bag = PKCS12_SAFEBAG_create_cert(cert)) == NULL)
goto err;
/*
* Use friendlyName and localKeyID in certificate. (if present)
*/
name = (char *)X509_alias_get0(cert, &namelen);
if (name && !PKCS12_add_friendlyname(bag, name, namelen))
goto err;
keyid = X509_keyid_get0(cert, &keyidlen);
if (keyid && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
goto err;
if (!pkcs12_add_bag(pbags, bag))
goto err;
return bag;
err:
PKCS12_SAFEBAG_free(bag);
return NULL;
}
PKCS12_SAFEBAG *PKCS12_add_key(STACK_OF(PKCS12_SAFEBAG) **pbags,
EVP_PKEY *key, int key_usage, int iter,
int nid_key, const char *pass)
{
PKCS12_SAFEBAG *bag = NULL;
PKCS8_PRIV_KEY_INFO *p8 = NULL;
/* Make a PKCS#8 structure */
if ((p8 = EVP_PKEY2PKCS8(key)) == NULL)
goto err;
if (key_usage && !PKCS8_add_keyusage(p8, key_usage))
goto err;
if (nid_key != -1) {
bag = PKCS12_SAFEBAG_create_pkcs8_encrypt(nid_key, pass, -1, NULL, 0,
iter, p8);
PKCS8_PRIV_KEY_INFO_free(p8);
} else
bag = PKCS12_SAFEBAG_create0_p8inf(p8);
if (!bag)
goto err;
if (!pkcs12_add_bag(pbags, bag))
goto err;
return bag;
err:
PKCS12_SAFEBAG_free(bag);
return NULL;
}
int PKCS12_add_safe(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags,
int nid_safe, int iter, const char *pass)
{
PKCS7 *p7 = NULL;
int free_safes = 0;
if (!*psafes) {
*psafes = sk_PKCS7_new_null();
if (!*psafes)
return 0;
free_safes = 1;
} else
free_safes = 0;
if (nid_safe == 0)
#ifdef OPENSSL_NO_RC2
nid_safe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
#else
nid_safe = NID_pbe_WithSHA1And40BitRC2_CBC;
#endif
if (nid_safe == -1)
p7 = PKCS12_pack_p7data(bags);
else
p7 = PKCS12_pack_p7encdata(nid_safe, pass, -1, NULL, 0, iter, bags);
if (!p7)
goto err;
if (!sk_PKCS7_push(*psafes, p7))
goto err;
return 1;
err:
if (free_safes) {
sk_PKCS7_free(*psafes);
*psafes = NULL;
}
PKCS7_free(p7);
return 0;
}
static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
PKCS12_SAFEBAG *bag)
{
int free_bags;
if (!pbags)
return 1;
if (!*pbags) {
*pbags = sk_PKCS12_SAFEBAG_new_null();
if (!*pbags)
return 0;
free_bags = 1;
} else
free_bags = 0;
if (!sk_PKCS12_SAFEBAG_push(*pbags, bag)) {
if (free_bags) {
sk_PKCS12_SAFEBAG_free(*pbags);
*pbags = NULL;
}
return 0;
}
return 1;
}
PKCS12 *PKCS12_add_safes(STACK_OF(PKCS7) *safes, int nid_p7)
{
PKCS12 *p12;
if (nid_p7 <= 0)
nid_p7 = NID_pkcs7_data;
p12 = PKCS12_init(nid_p7);
if (!p12)
return NULL;
if (!PKCS12_pack_authsafes(p12, safes)) {
PKCS12_free(p12);
return NULL;
}
return p12;
}
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