Add PKCS12_key_gen().
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@16535 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
145
lib/des/pkcs12.c
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145
lib/des/pkcs12.c
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/*
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* Copyright (c) 2006 Kungliga Tekniska H<>gskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* 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 the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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RCSID("$Id$");
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <pkcs12.h>
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#include <bn.h>
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#include <roken.h>
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int
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PKCS12_key_gen(const void *key, size_t keylen,
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const void *salt, size_t saltlen,
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int id, int iteration, size_t outkeysize,
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void *out, const EVP_MD *md)
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{
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unsigned char *v, *I, hash[EVP_MAX_MD_SIZE];
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unsigned int size, size_I = 0;
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unsigned char idc = id;
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EVP_MD_CTX ctx;
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unsigned char *outp = out;
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int i, vlen;
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EVP_MD_CTX_init(&ctx);
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vlen = EVP_MD_block_size(md);
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v = malloc(vlen + 1);
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if (v == NULL)
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return 0;
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I = calloc(1, vlen * 2);
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if (I == NULL) {
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free(v);
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return 0;
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}
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if (salt && saltlen > 0) {
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for (i = 0; i < vlen; i++)
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I[i] = ((unsigned char*)salt)[i % saltlen];
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size_I += vlen;
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}
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if (key && keylen > 0) {
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for (i = 0; i < vlen / 2; i++) {
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I[(i * 2) + size_I] = 0;
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I[(i * 2) + size_I + 1] = ((unsigned char*)key)[i % (keylen + 1)];
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}
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size_I += vlen;
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}
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while (1) {
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BIGNUM *bnB, *bnOne;
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if (!EVP_DigestInit_ex(&ctx, md, NULL))
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return 0;
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for (i = 0; i < vlen; i++)
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EVP_DigestUpdate(&ctx, &idc, 1);
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EVP_DigestUpdate(&ctx, I, size_I);
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EVP_DigestFinal_ex(&ctx, hash, &size);
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for (i = 1; i < iteration; i++)
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EVP_Digest(hash, size, hash, &size, md, NULL);
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memcpy(outp, hash, min(outkeysize, size));
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if (outkeysize < size)
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break;
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outkeysize -= size;
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outp += size;
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for (i = 0; i < vlen; i++)
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v[i] = hash[i % size];
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bnB = BN_bin2bn(v, vlen, NULL);
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bnOne = BN_new();
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BN_set_word(bnOne, 1);
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BN_uadd(bnB, bnB, bnOne);
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for (i = 0; i < vlen * 2; i += vlen) {
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BIGNUM *bnI;
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int j;
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bnI = BN_bin2bn(I + i, vlen, NULL);
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BN_uadd(bnI, bnI, bnB);
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j = BN_num_bytes(bnI);
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if (j > vlen) {
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assert(j == vlen + 1);
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BN_bn2bin(bnI, v);
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memcpy(I + i, v + 1, vlen);
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} else {
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memset(I + i, 0, vlen - j);
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BN_bn2bin(bnI, I + i + vlen - j);
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}
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BN_free(bnI);
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}
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BN_free(bnB);
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BN_free(bnOne);
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size_I = vlen * 2;
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}
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EVP_MD_CTX_cleanup(&ctx);
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free(I);
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free(v);
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return 1;
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}
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57
lib/des/pkcs12.h
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57
lib/des/pkcs12.h
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@@ -0,0 +1,57 @@
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/*
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* Copyright (c) 2006 Kungliga Tekniska H<>gskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* 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 the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* $Id$
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*/
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#ifndef _HEIM_PKCS12_H
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#define _HEIM_PKCS12_H 1
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/* symbol renaming */
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#define PKCS12_key_gen hc_PKCS12_key_gen
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/*
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*
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*/
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#include <evp.h>
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#define PKCS12_KEY_ID 1
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#define PKCS12_IV_ID 2
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int PKCS12_key_gen(const void *, size_t, const void *,
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size_t, int, int, size_t, void *, const EVP_MD *);
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#endif /* _HEIM_PKCS12_H */
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