/* $OpenBSD: p12_add.c,v 1.18 2022/08/03 20:16:06 tb Exp $ */

/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL

 * project 1999.

 */

/* ====================================================================

 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * 3. All advertising materials mentioning features or use of this

 *    software must display the following acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"

 *

 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

 *    endorse or promote products derived from this software without

 *    prior written permission. For written permission, please contact

 *    licensing@OpenSSL.org.

 *

 * 5. Products derived from this software may not be called "OpenSSL"

 *    nor may "OpenSSL" appear in their names without prior written

 *    permission of the OpenSSL Project.

 *

 * 6. Redistributions of any form whatsoever must retain the following

 *    acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"

 *

 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR

 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

 * OF THE POSSIBILITY OF SUCH DAMAGE.

 * ====================================================================

 *

 * This product includes cryptographic software written by Eric Young

 * (eay@cryptsoft.com).  This product includes software written by Tim

 * Hudson (tjh@cryptsoft.com).

 *

 */

#include <stdio.h>

#include <openssl/err.h>

#include <openssl/pkcs12.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())) {

    PKCS12error(ERR_R_MALLOC_FAILURE);

    return NULL;

  }

  bag->type = OBJ_nid2obj(nid1);

  if (!ASN1_item_pack(obj, it, &bag->value.octet)) {

    PKCS12error(ERR_R_MALLOC_FAILURE);

    PKCS12_BAGS_free(bag);

    return NULL;

  }

  if (!(safebag = PKCS12_SAFEBAG_new())) {

    PKCS12error(ERR_R_MALLOC_FAILURE);

    PKCS12_BAGS_free(bag);

    return NULL;

  }

  safebag->value.bag = bag;

  safebag->type = OBJ_nid2obj(nid2);

  return safebag;

}

#if !defined(LIBRESSL_NEXT_API)

#undef PKCS12_MAKE_KEYBAG

#undef PKCS12_MAKE_SHKEYBAG

/* Turn PKCS8 object into a keybag */

PKCS12_SAFEBAG *

PKCS12_MAKE_KEYBAG(PKCS8_PRIV_KEY_INFO *p8)

{

  PKCS12_SAFEBAG *bag;

  if (!(bag = PKCS12_SAFEBAG_new())) {

    PKCS12error(ERR_R_MALLOC_FAILURE);

    return NULL;

  }

  bag->type = OBJ_nid2obj(NID_keyBag);

  bag->value.keybag = p8;

  return bag;

}

/* Turn PKCS8 object into a shrouded keybag */

PKCS12_SAFEBAG *

PKCS12_MAKE_SHKEYBAG(int pbe_nid, const char *pass, int passlen,

    unsigned char *salt, int saltlen, int iter, PKCS8_PRIV_KEY_INFO *p8)

{

  PKCS12_SAFEBAG *bag;

  const EVP_CIPHER *pbe_ciph;

  /* Set up the safe bag */

  if (!(bag = PKCS12_SAFEBAG_new())) {

    PKCS12error(ERR_R_MALLOC_FAILURE);

    return NULL;

  }

  bag->type = OBJ_nid2obj(NID_pkcs8ShroudedKeyBag);

  pbe_ciph = EVP_get_cipherbynid(pbe_nid);

  if (pbe_ciph)

    pbe_nid = -1;

  if (!(bag->value.shkeybag = PKCS8_encrypt(pbe_nid, pbe_ciph, pass,

      passlen, salt, saltlen, iter, p8))) {

    PKCS12error(ERR_R_MALLOC_FAILURE);

    PKCS12_SAFEBAG_free(bag);

    return NULL;

  }

  return bag;

}

#endif

/* 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())) {

    PKCS12error(ERR_R_MALLOC_FAILURE);

    return NULL;

  }

  p7->type = OBJ_nid2obj(NID_pkcs7_data);

  if (!(p7->d.data = ASN1_OCTET_STRING_new())) {

    PKCS12error(ERR_R_MALLOC_FAILURE);

    goto err;

  }

  if (!ASN1_item_pack(sk, &PKCS12_SAFEBAGS_it, &p7->d.data)) {

    PKCS12error(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)) {

    PKCS12error(PKCS12_R_CONTENT_TYPE_NOT_DATA);

    return NULL;

  }

  return ASN1_item_unpack(p7->d.data, &PKCS12_SAFEBAGS_it);

}

/* Turn a stack of SAFEBAGS into a PKCS#7 encrypted data ContentInfo */

PKCS7 *

PKCS12_pack_p7encdata(int pbe_nid, const char *pass, int passlen,

    unsigned char *salt, int saltlen, int iter, STACK_OF(PKCS12_SAFEBAG) *bags)

{

  PKCS7 *p7;

  X509_ALGOR *pbe;

  const EVP_CIPHER *pbe_ciph;

  if (!(p7 = PKCS7_new())) {

    PKCS12error(ERR_R_MALLOC_FAILURE);

    return NULL;

  }

  if (!PKCS7_set_type(p7, NID_pkcs7_encrypted)) {

    PKCS12error(PKCS12_R_ERROR_SETTING_ENCRYPTED_DATA_TYPE);

    goto err;

  }

  pbe_ciph = EVP_get_cipherbynid(pbe_nid);

  if (pbe_ciph)

    pbe = PKCS5_pbe2_set(pbe_ciph, iter, salt, saltlen);

  else

    pbe = PKCS5_pbe_set(pbe_nid, iter, salt, saltlen);

  if (!pbe) {

    PKCS12error(ERR_R_MALLOC_FAILURE);

    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(

      pbe, &PKCS12_SAFEBAGS_it, pass, passlen, bags, 1))) {

    PKCS12error(PKCS12_R_ENCRYPT_ERROR);

    goto err;

  }

  return p7;

err:

  PKCS7_free(p7);

  return 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(p7->d.encrypted->enc_data->algorithm,

      &PKCS12_SAFEBAGS_it, pass, passlen,

      p7->d.encrypted->enc_data->enc_data, 1);

}

PKCS8_PRIV_KEY_INFO *

PKCS12_decrypt_skey(const PKCS12_SAFEBAG *bag, const char *pass, int passlen)

{

  return PKCS8_decrypt(bag->value.shkeybag, pass, passlen);

}

int

PKCS12_pack_authsafes(PKCS12 *p12, STACK_OF(PKCS7) *safes)

{

  if (ASN1_item_pack(safes, &PKCS12_AUTHSAFES_it,

      &p12->authsafes->d.data))

    return 1;

  return 0;

}

STACK_OF(PKCS7) *

PKCS12_unpack_authsafes(const PKCS12 *p12)

{

  if (!PKCS7_type_is_data(p12->authsafes)) {

    PKCS12error(PKCS12_R_CONTENT_TYPE_NOT_DATA);

    return NULL;

  }

  return ASN1_item_unpack(p12->authsafes->d.data,

      &PKCS12_AUTHSAFES_it);

}