1/*
2 * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include "internal/cryptlib.h"
12#include <openssl/pkcs12.h>
13
14/* PKCS#12 PBE algorithms now in static table */
15
16void PKCS12_PBE_add(void)
17{
18}
19
20int PKCS12_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
21 ASN1_TYPE *param, const EVP_CIPHER *cipher,
22 const EVP_MD *md, int en_de)
23{
24 PBEPARAM *pbe;
25 int saltlen, iter, ret;
26 unsigned char *salt;
27 unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
28 int (*pkcs12_key_gen)(const char *pass, int passlen,
29 unsigned char *salt, int slen,
30 int id, int iter, int n,
31 unsigned char *out,
32 const EVP_MD *md_type);
33
34 pkcs12_key_gen = PKCS12_key_gen_utf8;
35
36 if (cipher == NULL)
37 return 0;
38
39 /* Extract useful info from parameter */
40
41 pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), param);
42 if (pbe == NULL) {
43 PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_DECODE_ERROR);
44 return 0;
45 }
46
47 if (pbe->iter == NULL)
48 iter = 1;
49 else
50 iter = ASN1_INTEGER_get(pbe->iter);
51 salt = pbe->salt->data;
52 saltlen = pbe->salt->length;
53 if (!(*pkcs12_key_gen)(pass, passlen, salt, saltlen, PKCS12_KEY_ID,
54 iter, EVP_CIPHER_key_length(cipher), key, md)) {
55 PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_KEY_GEN_ERROR);
56 PBEPARAM_free(pbe);
57 return 0;
58 }
59 if (!(*pkcs12_key_gen)(pass, passlen, salt, saltlen, PKCS12_IV_ID,
60 iter, EVP_CIPHER_iv_length(cipher), iv, md)) {
61 PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_IV_GEN_ERROR);
62 PBEPARAM_free(pbe);
63 return 0;
64 }
65 PBEPARAM_free(pbe);
66 ret = EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, en_de);
67 OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
68 OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
69 return ret;
70}
71