[331] | 1 | /*
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| 2 | * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include "internal/cryptlib.h"
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| 12 | #include <openssl/pkcs12.h>
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| 13 |
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| 14 | /* PKCS#12 PBE algorithms now in static table */
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| 15 |
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| 16 | void PKCS12_PBE_add(void)
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| 17 | {
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| 18 | }
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| 19 |
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| 20 | int PKCS12_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
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| 21 | ASN1_TYPE *param, const EVP_CIPHER *cipher,
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| 22 | const EVP_MD *md, int en_de)
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| 23 | {
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| 24 | PBEPARAM *pbe;
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| 25 | int saltlen, iter, ret;
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| 26 | unsigned char *salt;
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| 27 | unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
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| 28 | int (*pkcs12_key_gen)(const char *pass, int passlen,
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| 29 | unsigned char *salt, int slen,
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| 30 | int id, int iter, int n,
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| 31 | unsigned char *out,
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| 32 | const EVP_MD *md_type);
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| 33 |
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| 34 | pkcs12_key_gen = PKCS12_key_gen_utf8;
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| 35 |
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| 36 | if (cipher == NULL)
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| 37 | return 0;
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| 38 |
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| 39 | /* Extract useful info from parameter */
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| 40 |
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| 41 | pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), param);
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| 42 | if (pbe == NULL) {
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| 43 | PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_DECODE_ERROR);
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| 44 | return 0;
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| 45 | }
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| 46 |
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| 47 | if (!pbe->iter)
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| 48 | iter = 1;
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| 49 | else
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| 50 | iter = ASN1_INTEGER_get(pbe->iter);
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| 51 | salt = pbe->salt->data;
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| 52 | saltlen = pbe->salt->length;
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| 53 | if (!(*pkcs12_key_gen)(pass, passlen, salt, saltlen, PKCS12_KEY_ID,
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| 54 | iter, EVP_CIPHER_key_length(cipher), key, md)) {
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| 55 | PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_KEY_GEN_ERROR);
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| 56 | PBEPARAM_free(pbe);
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| 57 | return 0;
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| 58 | }
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| 59 | if (!(*pkcs12_key_gen)(pass, passlen, salt, saltlen, PKCS12_IV_ID,
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| 60 | iter, EVP_CIPHER_iv_length(cipher), iv, md)) {
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| 61 | PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_IV_GEN_ERROR);
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| 62 | PBEPARAM_free(pbe);
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| 63 | return 0;
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| 64 | }
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| 65 | PBEPARAM_free(pbe);
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| 66 | ret = EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, en_de);
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| 67 | OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
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| 68 | OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
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| 69 | return ret;
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| 70 | }
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