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pineappleEA
2020-12-28 15:15:37 +00:00
parent 84b39492d1
commit 78b48028e1
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197
externals/libressl/crypto/pkcs12/p12_key.c vendored Executable file
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/* $OpenBSD: p12_key.c,v 1.26 2017/05/02 03:59:45 deraadt Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project 1999.
*/
/* ====================================================================
* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <stdio.h>
#include <string.h>
#include <openssl/bn.h>
#include <openssl/err.h>
#include <openssl/pkcs12.h>
/* PKCS12 compatible key/IV generation */
#ifndef min
#define min(a,b) ((a) < (b) ? (a) : (b))
#endif
int
PKCS12_key_gen_asc(const char *pass, int passlen, unsigned char *salt,
int saltlen, int id, int iter, int n, unsigned char *out,
const EVP_MD *md_type)
{
int ret;
unsigned char *unipass;
int uniplen;
if (!pass) {
unipass = NULL;
uniplen = 0;
} else if (!OPENSSL_asc2uni(pass, passlen, &unipass, &uniplen)) {
PKCS12error(ERR_R_MALLOC_FAILURE);
return 0;
}
ret = PKCS12_key_gen_uni(unipass, uniplen, salt, saltlen,
id, iter, n, out, md_type);
if (ret <= 0)
return 0;
freezero(unipass, uniplen);
return ret;
}
int
PKCS12_key_gen_uni(unsigned char *pass, int passlen, unsigned char *salt,
int saltlen, int id, int iter, int n, unsigned char *out,
const EVP_MD *md_type)
{
unsigned char *B, *D, *I, *p, *Ai;
int Slen, Plen, Ilen, Ijlen;
int i, j, u, v;
int ret = 0;
BIGNUM *Ij, *Bpl1; /* These hold Ij and B + 1 */
EVP_MD_CTX ctx;
v = EVP_MD_block_size(md_type);
u = EVP_MD_size(md_type);
if (u < 0)
return 0;
EVP_MD_CTX_init(&ctx);
D = malloc(v);
Ai = malloc(u);
B = malloc(v + 1);
Slen = v * ((saltlen + v - 1) / v);
if (passlen)
Plen = v * ((passlen + v - 1)/v);
else
Plen = 0;
Ilen = Slen + Plen;
I = malloc(Ilen);
Ij = BN_new();
Bpl1 = BN_new();
if (!D || !Ai || !B || !I || !Ij || !Bpl1)
goto err;
for (i = 0; i < v; i++)
D[i] = id;
p = I;
for (i = 0; i < Slen; i++)
*p++ = salt[i % saltlen];
for (i = 0; i < Plen; i++)
*p++ = pass[i % passlen];
for (;;) {
if (!EVP_DigestInit_ex(&ctx, md_type, NULL) ||
!EVP_DigestUpdate(&ctx, D, v) ||
!EVP_DigestUpdate(&ctx, I, Ilen) ||
!EVP_DigestFinal_ex(&ctx, Ai, NULL))
goto err;
for (j = 1; j < iter; j++) {
if (!EVP_DigestInit_ex(&ctx, md_type, NULL) ||
!EVP_DigestUpdate(&ctx, Ai, u) ||
!EVP_DigestFinal_ex(&ctx, Ai, NULL))
goto err;
}
memcpy (out, Ai, min (n, u));
if (u >= n) {
ret = 1;
goto end;
}
n -= u;
out += u;
for (j = 0; j < v; j++)
B[j] = Ai[j % u];
/* Work out B + 1 first then can use B as tmp space */
if (!BN_bin2bn (B, v, Bpl1))
goto err;
if (!BN_add_word (Bpl1, 1))
goto err;
for (j = 0; j < Ilen; j += v) {
if (!BN_bin2bn(I + j, v, Ij))
goto err;
if (!BN_add(Ij, Ij, Bpl1))
goto err;
if (!BN_bn2bin(Ij, B))
goto err;
Ijlen = BN_num_bytes (Ij);
/* If more than 2^(v*8) - 1 cut off MSB */
if (Ijlen > v) {
if (!BN_bn2bin (Ij, B))
goto err;
memcpy (I + j, B + 1, v);
#ifndef PKCS12_BROKEN_KEYGEN
/* If less than v bytes pad with zeroes */
} else if (Ijlen < v) {
memset(I + j, 0, v - Ijlen);
if (!BN_bn2bin(Ij, I + j + v - Ijlen))
goto err;
#endif
} else if (!BN_bn2bin (Ij, I + j))
goto err;
}
}
err:
PKCS12error(ERR_R_MALLOC_FAILURE);
end:
free(Ai);
free(B);
free(D);
free(I);
BN_free(Ij);
BN_free(Bpl1);
EVP_MD_CTX_cleanup(&ctx);
return ret;
}