1/*
2 * Copyright 1999-2021 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/core.h>
13#include <openssl/core_names.h>
14#include "crypto/evp.h"
15#include <openssl/pkcs12.h>
16
17/* PKCS#12 PBE algorithms now in static table */
18
19void PKCS12_PBE_add(void)
20{
21}
22
23int PKCS12_PBE_keyivgen_ex(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
24                           ASN1_TYPE *param, const EVP_CIPHER *cipher,
25                           const EVP_MD *md, int en_de,
26                           OSSL_LIB_CTX *libctx, const char *propq)
27{
28    PBEPARAM *pbe;
29    int saltlen, iter, ret;
30    unsigned char *salt;
31    unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
32    unsigned char *piv = iv;
33
34    if (cipher == NULL)
35        return 0;
36
37    /* Extract useful info from parameter */
38
39    pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), param);
40    if (pbe == NULL) {
41        ERR_raise(ERR_LIB_PKCS12, PKCS12_R_DECODE_ERROR);
42        return 0;
43    }
44
45    if (pbe->iter == NULL)
46        iter = 1;
47    else
48        iter = ASN1_INTEGER_get(pbe->iter);
49    salt = pbe->salt->data;
50    saltlen = pbe->salt->length;
51    if (!PKCS12_key_gen_utf8_ex(pass, passlen, salt, saltlen, PKCS12_KEY_ID,
52                                iter, EVP_CIPHER_get_key_length(cipher),
53                                key, md,
54                                libctx, propq)) {
55        ERR_raise(ERR_LIB_PKCS12, PKCS12_R_KEY_GEN_ERROR);
56        PBEPARAM_free(pbe);
57        return 0;
58    }
59    if (EVP_CIPHER_get_iv_length(cipher) > 0) {
60        if (!PKCS12_key_gen_utf8_ex(pass, passlen, salt, saltlen, PKCS12_IV_ID,
61                                    iter, EVP_CIPHER_get_iv_length(cipher),
62                                    iv, md,
63                                    libctx, propq)) {
64            ERR_raise(ERR_LIB_PKCS12, PKCS12_R_IV_GEN_ERROR);
65            PBEPARAM_free(pbe);
66            return 0;
67        }
68    } else {
69        piv = NULL;
70    }
71    PBEPARAM_free(pbe);
72    ret = EVP_CipherInit_ex(ctx, cipher, NULL, key, piv, en_de);
73    OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
74    OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
75    return ret;
76}
77
78int PKCS12_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
79                        ASN1_TYPE *param, const EVP_CIPHER *cipher,
80                        const EVP_MD *md, int en_de)
81{
82    return PKCS12_PBE_keyivgen_ex(ctx, pass, passlen, param, cipher, md, en_de,
83                                  NULL, NULL);
84}
85
86