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/*
* Copyright 1999-2021 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/core.h>
#include <openssl/core_names.h>
#include <openssl/pkcs12.h>
#include "p12_local.h"
#include "crypto/pkcs7/pk7_local.h"
/* Pack an object into an OCTET STRING and turn into a safebag */
PKCS12_SAFEBAG *PKCS12_item_pack_safebag(void *obj, const ASN1_ITEM *it,
int nid1, int nid2)
{
PKCS12_BAGS *bag;
PKCS12_SAFEBAG *safebag;
if ((bag = PKCS12_BAGS_new()) == NULL) {
ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
return NULL;
}
bag->type = OBJ_nid2obj(nid1);
if (!ASN1_item_pack(obj, it, &bag->value.octet)) {
ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
goto err;
}
if ((safebag = PKCS12_SAFEBAG_new()) == NULL) {
ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
goto err;
}
safebag->value.bag = bag;
safebag->type = OBJ_nid2obj(nid2);
return safebag;
err:
PKCS12_BAGS_free(bag);
return NULL;
}
/* Turn a stack of SAFEBAGS into a PKCS#7 data Contentinfo */
PKCS7 *PKCS12_pack_p7data(STACK_OF(PKCS12_SAFEBAG) *sk)
{
PKCS7 *p7;
if ((p7 = PKCS7_new()) == NULL) {
ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
return NULL;
}
p7->type = OBJ_nid2obj(NID_pkcs7_data);
if ((p7->d.data = ASN1_OCTET_STRING_new()) == NULL) {
ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
goto err;
}
if (!ASN1_item_pack(sk, ASN1_ITEM_rptr(PKCS12_SAFEBAGS), &p7->d.data)) {
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CANT_PACK_STRUCTURE);
goto err;
}
return p7;
err:
PKCS7_free(p7);
return NULL;
}
/* Unpack SAFEBAGS from PKCS#7 data ContentInfo */
STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_p7data(PKCS7 *p7)
{
if (!PKCS7_type_is_data(p7)) {
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CONTENT_TYPE_NOT_DATA);
return NULL;
}
return ASN1_item_unpack(p7->d.data, ASN1_ITEM_rptr(PKCS12_SAFEBAGS));
}
/* Turn a stack of SAFEBAGS into a PKCS#7 encrypted data ContentInfo */
PKCS7 *PKCS12_pack_p7encdata_ex(int pbe_nid, const char *pass, int passlen,
unsigned char *salt, int saltlen, int iter,
STACK_OF(PKCS12_SAFEBAG) *bags,
OSSL_LIB_CTX *ctx, const char *propq)
{
PKCS7 *p7;
X509_ALGOR *pbe;
const EVP_CIPHER *pbe_ciph = NULL;
EVP_CIPHER *pbe_ciph_fetch = NULL;
if ((p7 = PKCS7_new_ex(ctx, propq)) == NULL) {
ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
return NULL;
}
if (!PKCS7_set_type(p7, NID_pkcs7_encrypted)) {
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_ERROR_SETTING_ENCRYPTED_DATA_TYPE);
goto err;
}
ERR_set_mark();
pbe_ciph = pbe_ciph_fetch = EVP_CIPHER_fetch(ctx, OBJ_nid2sn(pbe_nid), propq);
if (pbe_ciph == NULL)
pbe_ciph = EVP_get_cipherbynid(pbe_nid);
ERR_pop_to_mark();
if (pbe_ciph != NULL) {
pbe = PKCS5_pbe2_set_iv_ex(pbe_ciph, iter, salt, saltlen, NULL, -1, ctx);
} else {
pbe = PKCS5_pbe_set_ex(pbe_nid, iter, salt, saltlen, ctx);
}
if (pbe == NULL) {
ERR_raise(ERR_LIB_PKCS12, ERR_R_ASN1_LIB);
goto err;
}
X509_ALGOR_free(p7->d.encrypted->enc_data->algorithm);
p7->d.encrypted->enc_data->algorithm = pbe;
ASN1_OCTET_STRING_free(p7->d.encrypted->enc_data->enc_data);
if (!(p7->d.encrypted->enc_data->enc_data =
PKCS12_item_i2d_encrypt_ex(pbe, ASN1_ITEM_rptr(PKCS12_SAFEBAGS), pass,
passlen, bags, 1, ctx, propq))) {
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_ENCRYPT_ERROR);
goto err;
}
EVP_CIPHER_free(pbe_ciph_fetch);
return p7;
err:
PKCS7_free(p7);
EVP_CIPHER_free(pbe_ciph_fetch);
return NULL;
}
PKCS7 *PKCS12_pack_p7encdata(int pbe_nid, const char *pass, int passlen,
unsigned char *salt, int saltlen, int iter,
STACK_OF(PKCS12_SAFEBAG) *bags)
{
return PKCS12_pack_p7encdata_ex(pbe_nid, pass, passlen, salt, saltlen,
iter, bags, NULL, NULL);
}
STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_p7encdata(PKCS7 *p7, const char *pass,
int passlen)
{
if (!PKCS7_type_is_encrypted(p7))
return NULL;
return PKCS12_item_decrypt_d2i_ex(p7->d.encrypted->enc_data->algorithm,
ASN1_ITEM_rptr(PKCS12_SAFEBAGS),
pass, passlen,
p7->d.encrypted->enc_data->enc_data, 1,
p7->ctx.libctx, p7->ctx.propq);
}
PKCS8_PRIV_KEY_INFO *PKCS12_decrypt_skey_ex(const PKCS12_SAFEBAG *bag,
const char *pass, int passlen,
OSSL_LIB_CTX *ctx, const char *propq)
{
return PKCS8_decrypt_ex(bag->value.shkeybag, pass, passlen, ctx, propq);
}
PKCS8_PRIV_KEY_INFO *PKCS12_decrypt_skey(const PKCS12_SAFEBAG *bag,
const char *pass, int passlen)
{
return PKCS12_decrypt_skey_ex(bag, pass, passlen, NULL, NULL);
}
int PKCS12_pack_authsafes(PKCS12 *p12, STACK_OF(PKCS7) *safes)
{
if (ASN1_item_pack(safes, ASN1_ITEM_rptr(PKCS12_AUTHSAFES),
&p12->authsafes->d.data))
return 1;
return 0;
}
STACK_OF(PKCS7) *PKCS12_unpack_authsafes(const PKCS12 *p12)
{
STACK_OF(PKCS7) *p7s;
PKCS7 *p7;
int i;
if (!PKCS7_type_is_data(p12->authsafes)) {
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_CONTENT_TYPE_NOT_DATA);
return NULL;
}
p7s = ASN1_item_unpack(p12->authsafes->d.data,
ASN1_ITEM_rptr(PKCS12_AUTHSAFES));
if (p7s != NULL) {
for (i = 0; i < sk_PKCS7_num(p7s); i++) {
p7 = sk_PKCS7_value(p7s, i);
if (!ossl_pkcs7_ctx_propagate(p12->authsafes, p7))
goto err;
}
}
return p7s;
err:
sk_PKCS7_free(p7s);
return NULL;
}
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