0fe17491c3
To avoid possible race conditions don't switch password format using global state in crypto/pkcs12 Reviewed-by: Richard Levitte <levitte@openssl.org>
70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/*
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* Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/pkcs12.h>
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/* PKCS#12 PBE algorithms now in static table */
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void PKCS12_PBE_add(void)
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{
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}
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int PKCS12_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
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ASN1_TYPE *param, const EVP_CIPHER *cipher,
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const EVP_MD *md, int en_de)
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{
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PBEPARAM *pbe;
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int saltlen, iter, ret;
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unsigned char *salt;
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unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
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int (*pkcs12_key_gen)(const char *pass, int passlen,
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unsigned char *salt, int slen,
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int id, int iter, int n,
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unsigned char *out,
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const EVP_MD *md_type);
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pkcs12_key_gen = PKCS12_key_gen_utf8;
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if (cipher == NULL)
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return 0;
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/* Extract useful info from parameter */
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pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), param);
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if (pbe == NULL) {
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PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_DECODE_ERROR);
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return 0;
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}
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if (!pbe->iter)
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iter = 1;
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else
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iter = ASN1_INTEGER_get(pbe->iter);
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salt = pbe->salt->data;
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saltlen = pbe->salt->length;
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if (!(*pkcs12_key_gen)(pass, passlen, salt, saltlen, PKCS12_KEY_ID,
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iter, EVP_CIPHER_key_length(cipher), key, md)) {
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PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_KEY_GEN_ERROR);
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PBEPARAM_free(pbe);
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return 0;
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}
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if (!(*pkcs12_key_gen)(pass, passlen, salt, saltlen, PKCS12_IV_ID,
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iter, EVP_CIPHER_iv_length(cipher), iv, md)) {
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PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_IV_GEN_ERROR);
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PBEPARAM_free(pbe);
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return 0;
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}
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PBEPARAM_free(pbe);
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ret = EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, en_de);
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OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
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OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
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return ret;
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}
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