p12_crt.c
/*
* Copyright 1999-2023 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 <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 pkcs12_remove_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
PKCS12_SAFEBAG *bag);
static PKCS12_SAFEBAG *pkcs12_add_cert_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
X509 *cert,
const char *name,
int namelen,
unsigned char *keyid,
int keyidlen);
static int copy_bag_attr(PKCS12_SAFEBAG *bag, EVP_PKEY *pkey, int nid)
{
int idx = EVP_PKEY_get_attr_by_NID(pkey, nid, -1);
if (idx < 0)
return 1;
return X509at_add1_attr(&bag->attrib, EVP_PKEY_get_attr(pkey, idx)) != NULL;
}
PKCS12 *PKCS12_create_ex2(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,
OSSL_LIB_CTX *ctx, const char *propq,
PKCS12_create_cb *cb, void *cbarg)
{
PKCS12 *p12 = NULL;
STACK_OF(PKCS7) *safes = NULL;
STACK_OF(PKCS12_SAFEBAG) *bags = NULL;
PKCS12_SAFEBAG *bag = NULL;
int i, cbret;
unsigned char keyid[EVP_MAX_MD_SIZE];
unsigned int keyidlen = 0;
int namelen = -1;
unsigned char *pkeyid = NULL;
int pkeyidlen = -1;
/* Set defaults */
if (nid_cert == NID_undef)
nid_cert = NID_aes_256_cbc;
if (nid_key == NID_undef)
nid_key = NID_aes_256_cbc;
if (!iter)
iter = PKCS12_DEFAULT_ITER;
if (!mac_iter)
mac_iter = PKCS12_DEFAULT_ITER;
if (pkey == NULL && cert == NULL && ca == NULL) {
ERR_raise(ERR_LIB_PKCS12, 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) {
if (name == NULL)
name = (char *)X509_alias_get0(cert, &namelen);
if (keyidlen > 0) {
pkeyid = keyid;
pkeyidlen = keyidlen;
} else {
pkeyid = X509_keyid_get0(cert, &pkeyidlen);
}
bag = pkcs12_add_cert_bag(&bags, cert, name, namelen, pkeyid, pkeyidlen);
if (cb != NULL) {
cbret = cb(bag, cbarg);
if (cbret == -1) {
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CALLBACK_FAILED);
goto err;
} else if (cbret == 0) {
pkcs12_remove_bag(&bags, bag);
}
}
}
/* Add all other certificates */
for (i = 0; i < sk_X509_num(ca); i++) {
if ((bag = PKCS12_add_cert(&bags, sk_X509_value(ca, i))) == NULL)
goto err;
if (cb != NULL) {
cbret = cb(bag, cbarg);
if (cbret == -1) {
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CALLBACK_FAILED);
goto err;
} else if (cbret == 0) {
pkcs12_remove_bag(&bags, bag);
}
}
}
if (bags && !PKCS12_add_safe_ex(&safes, bags, nid_cert, iter, pass,
ctx, propq))
goto err;
sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
bags = NULL;
if (pkey) {
bag = PKCS12_add_key_ex(&bags, pkey, keytype, iter, nid_key, pass,
ctx, propq);
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 (cb != NULL) {
cbret = cb(bag, cbarg);
if (cbret == -1) {
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CALLBACK_FAILED);
goto err;
} else if (cbret == 0) {
pkcs12_remove_bag(&bags, bag);
}
}
}
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_ex(safes, 0, ctx, propq);
if (p12 == NULL)
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 *PKCS12_create_ex(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,
OSSL_LIB_CTX *ctx, const char *propq)
{
return PKCS12_create_ex2(pass, name, pkey, cert, ca, nid_key, nid_cert,
iter, mac_iter, keytype, ctx, propq,
NULL, NULL);
}
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)
{
return PKCS12_create_ex(pass, name, pkey, cert, ca, nid_key, nid_cert,
iter, mac_iter, keytype, NULL, NULL);
}
static PKCS12_SAFEBAG *pkcs12_add_cert_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
X509 *cert,
const char *name,
int namelen,
unsigned char *keyid,
int keyidlen)
{
PKCS12_SAFEBAG *bag = NULL;
/* Add user certificate */
if ((bag = PKCS12_SAFEBAG_create_cert(cert)) == NULL)
goto err;
if (name != NULL && !PKCS12_add_friendlyname(bag, name, namelen))
goto err;
if (keyid != NULL && !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_cert(STACK_OF(PKCS12_SAFEBAG) **pbags, X509 *cert)
{
char *name = NULL;
int namelen = -1;
unsigned char *keyid = NULL;
int keyidlen = -1;
/*
* Use friendlyName and localKeyID in certificate. (if present)
*/
name = (char *)X509_alias_get0(cert, &namelen);
keyid = X509_keyid_get0(cert, &keyidlen);
return pkcs12_add_cert_bag(pbags, cert, name, namelen, keyid, keyidlen);
}
PKCS12_SAFEBAG *PKCS12_add_key_ex(STACK_OF(PKCS12_SAFEBAG) **pbags,
EVP_PKEY *key, int key_usage, int iter,
int nid_key, const char *pass,
OSSL_LIB_CTX *ctx, const char *propq)
{
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_ex(nid_key, pass, -1, NULL, 0,
iter, p8, ctx, propq);
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;
}
PKCS12_SAFEBAG *PKCS12_add_key(STACK_OF(PKCS12_SAFEBAG) **pbags,
EVP_PKEY *key, int key_usage, int iter,
int nid_key, const char *pass)
{
return PKCS12_add_key_ex(pbags, key, key_usage, iter, nid_key, pass,
NULL, NULL);
}
PKCS12_SAFEBAG *PKCS12_add_secret(STACK_OF(PKCS12_SAFEBAG) **pbags,
int nid_type, const unsigned char *value, int len)
{
PKCS12_SAFEBAG *bag = NULL;
/* Add secret, storing the value as an octet string */
if ((bag = PKCS12_SAFEBAG_create_secret(nid_type, V_ASN1_OCTET_STRING, value, len)) == NULL)
goto err;
if (!pkcs12_add_bag(pbags, bag))
goto err;
return bag;
err:
PKCS12_SAFEBAG_free(bag);
return NULL;
}
int PKCS12_add_safe_ex(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags,
int nid_safe, int iter, const char *pass,
OSSL_LIB_CTX *ctx, const char *propq)
{
PKCS7 *p7 = NULL;
int free_safes = 0;
if (*psafes == NULL) {
*psafes = sk_PKCS7_new_null();
if (*psafes == NULL)
return 0;
free_safes = 1;
}
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_ex(nid_safe, pass, -1, NULL, 0, iter, bags, ctx, propq);
if (p7 == NULL)
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;
}
int PKCS12_add_safe(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags,
int nid_safe, int iter, const char *pass)
{
return PKCS12_add_safe_ex(psafes, bags, nid_safe, iter, pass, NULL, NULL);
}
static int pkcs12_remove_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
PKCS12_SAFEBAG *bag)
{
PKCS12_SAFEBAG *tmp;
if (pbags == NULL || bag == NULL)
return 1;
if ((tmp = sk_PKCS12_SAFEBAG_delete_ptr(*pbags, bag)) == NULL)
return 0;
PKCS12_SAFEBAG_free(tmp);
return 1;
}
static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
PKCS12_SAFEBAG *bag)
{
int free_bags = 0;
if (pbags == NULL)
return 1;
if (*pbags == NULL) {
*pbags = sk_PKCS12_SAFEBAG_new_null();
if (*pbags == NULL)
return 0;
free_bags = 1;
}
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_ex(STACK_OF(PKCS7) *safes, int nid_p7,
OSSL_LIB_CTX *ctx, const char *propq)
{
PKCS12 *p12;
if (nid_p7 <= 0)
nid_p7 = NID_pkcs7_data;
p12 = PKCS12_init_ex(nid_p7, ctx, propq);
if (p12 == NULL)
return NULL;
if (!PKCS12_pack_authsafes(p12, safes)) {
PKCS12_free(p12);
return NULL;
}
return p12;
}
PKCS12 *PKCS12_add_safes(STACK_OF(PKCS7) *safes, int nid_p7)
{
return PKCS12_add_safes_ex(safes, nid_p7, NULL, NULL);
}
