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26a3a48d65
like Malloc, Realloc and especially Free conflict with already existing names on some operating systems or other packages. That is reason enough to change the names of the OpenSSL memory allocation macros to something that has a better chance of being unique, like prepending them with OPENSSL_. This change includes all the name changes needed throughout all C files.
198 lines
6.1 KiB
C
198 lines
6.1 KiB
C
/* p12_key.c */
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/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
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* project 1999.
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*/
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/* ====================================================================
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/pkcs12.h>
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/* Uncomment out this line to get debugging info about key generation */
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/*#define DEBUG_KEYGEN*/
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#ifdef DEBUG_KEYGEN
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#include <openssl/bio.h>
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extern BIO *bio_err;
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void h__dump (unsigned char *p, int len);
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#endif
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/* PKCS12 compatible key/IV generation */
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#ifndef min
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#define min(a,b) ((a) < (b) ? (a) : (b))
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#endif
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int PKCS12_key_gen_asc(const char *pass, int passlen, unsigned char *salt,
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int saltlen, int id, int iter, int n, unsigned char *out,
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const EVP_MD *md_type)
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{
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int ret;
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unsigned char *unipass;
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int uniplen;
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if(!pass) {
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unipass = NULL;
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uniplen = 0;
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} else if (!asc2uni(pass, &unipass, &uniplen)) {
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PKCS12err(PKCS12_F_PKCS12_KEY_GEN_ASC,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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ret = PKCS12_key_gen_uni(unipass, uniplen, salt, saltlen,
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id, iter, n, out, md_type);
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if(unipass) {
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memset(unipass, 0, uniplen); /* Clear password from memory */
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OPENSSL_free(unipass);
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}
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return ret;
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}
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int PKCS12_key_gen_uni(unsigned char *pass, int passlen, unsigned char *salt,
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int saltlen, int id, int iter, int n, unsigned char *out,
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const EVP_MD *md_type)
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{
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unsigned char *B, *D, *I, *p, *Ai;
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int Slen, Plen, Ilen;
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int i, j, u, v;
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BIGNUM *Ij, *Bpl1; /* These hold Ij and B + 1 */
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EVP_MD_CTX ctx;
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#ifdef DEBUG_KEYGEN
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unsigned char *tmpout = out;
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int tmpn = n;
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#endif
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#if 0
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if (!pass) {
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PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI,ERR_R_PASSED_NULL_PARAMETER);
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return 0;
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}
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#endif
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#ifdef DEBUG_KEYGEN
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fprintf(stderr, "KEYGEN DEBUG\n");
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fprintf(stderr, "ID %d, ITER %d\n", id, iter);
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fprintf(stderr, "Password (length %d):\n", passlen);
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h__dump(pass, passlen);
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fprintf(stderr, "Salt (length %d):\n", saltlen);
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h__dump(salt, saltlen);
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#endif
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v = EVP_MD_block_size (md_type);
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u = EVP_MD_size (md_type);
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D = OPENSSL_malloc (v);
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Ai = OPENSSL_malloc (u);
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B = OPENSSL_malloc (v + 1);
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Slen = v * ((saltlen+v-1)/v);
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if(passlen) Plen = v * ((passlen+v-1)/v);
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else Plen = 0;
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Ilen = Slen + Plen;
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I = OPENSSL_malloc (Ilen);
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Ij = BN_new();
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Bpl1 = BN_new();
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if (!D || !Ai || !B || !I || !Ij || !Bpl1) {
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PKCS12err(PKCS12_F_PKCS12_KEY_GEN_UNI,ERR_R_MALLOC_FAILURE);
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return 0;
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}
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for (i = 0; i < v; i++) D[i] = id;
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p = I;
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for (i = 0; i < Slen; i++) *p++ = salt[i % saltlen];
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for (i = 0; i < Plen; i++) *p++ = pass[i % passlen];
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for (;;) {
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EVP_DigestInit (&ctx, md_type);
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EVP_DigestUpdate (&ctx, D, v);
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EVP_DigestUpdate (&ctx, I, Ilen);
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EVP_DigestFinal (&ctx, Ai, NULL);
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for (j = 1; j < iter; j++) {
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EVP_DigestInit (&ctx, md_type);
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EVP_DigestUpdate (&ctx, Ai, u);
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EVP_DigestFinal (&ctx, Ai, NULL);
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}
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memcpy (out, Ai, min (n, u));
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if (u >= n) {
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OPENSSL_free (Ai);
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OPENSSL_free (B);
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OPENSSL_free (D);
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OPENSSL_free (I);
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BN_free (Ij);
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BN_free (Bpl1);
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#ifdef DEBUG_KEYGEN
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fprintf(stderr, "Output KEY (length %d)\n", tmpn);
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h__dump(tmpout, tmpn);
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#endif
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return 1;
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}
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n -= u;
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out += u;
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for (j = 0; j < v; j++) B[j] = Ai[j % u];
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/* Work out B + 1 first then can use B as tmp space */
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BN_bin2bn (B, v, Bpl1);
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BN_add_word (Bpl1, 1);
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for (j = 0; j < Ilen ; j+=v) {
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BN_bin2bn (I + j, v, Ij);
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BN_add (Ij, Ij, Bpl1);
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BN_bn2bin (Ij, B);
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/* If more than 2^(v*8) - 1 cut off MSB */
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if (BN_num_bytes (Ij) > v) {
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BN_bn2bin (Ij, B);
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memcpy (I + j, B + 1, v);
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} else BN_bn2bin (Ij, I + j);
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}
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}
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}
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#ifdef DEBUG_KEYGEN
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void h__dump (unsigned char *p, int len)
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{
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for (; len --; p++) fprintf(stderr, "%02X", *p);
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fprintf(stderr, "\n");
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}
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#endif
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