xref: /openssl/crypto/pkcs12/p12_crpt.c (revision ed576acd)
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 
PKCS12_PBE_add(void)19 void PKCS12_PBE_add(void)
20 {
21 }
22 
PKCS12_PBE_keyivgen_ex(EVP_CIPHER_CTX * ctx,const char * pass,int passlen,ASN1_TYPE * param,const EVP_CIPHER * cipher,const EVP_MD * md,int en_de,OSSL_LIB_CTX * libctx,const char * propq)23 int 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 
PKCS12_PBE_keyivgen(EVP_CIPHER_CTX * ctx,const char * pass,int passlen,ASN1_TYPE * param,const EVP_CIPHER * cipher,const EVP_MD * md,int en_de)78 int 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