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Include PKCS5_PBKDF2_HMAC() for compatibility with OpenSSL <1.0.0

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This commit is contained in:
samr7 2011-08-12 13:28:16 -07:00
parent b15be3734e
commit 38681d7c1e
1 changed files with 115 additions and 2 deletions
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117
util.c
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@ -288,6 +288,118 @@ vg_decode_privkey(const char *b58encoded, EC_KEY *pkey, int *addrtype)
return res;
}
#if OPENSSL_VERSION_NUMBER < 0x10000000L
/* The generic PBKDF2 function first appeared in OpenSSL 1.0 */
/* ====================================================================
* Copyright (c) 1999-2006 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).
*
*/
int
PKCS5_PBKDF2_HMAC(const char *pass, int passlen,
const unsigned char *salt, int saltlen, int iter,
const EVP_MD *digest,
int keylen, unsigned char *out)
{
unsigned char digtmp[EVP_MAX_MD_SIZE], *p, itmp[4];
int cplen, j, k, tkeylen, mdlen;
unsigned long i = 1;
HMAC_CTX hctx;
mdlen = EVP_MD_size(digest);
if (mdlen < 0)
return 0;
HMAC_CTX_init(&hctx);
p = out;
tkeylen = keylen;
if(!pass)
passlen = 0;
else if(passlen == -1)
passlen = strlen(pass);
while(tkeylen)
{
if(tkeylen > mdlen)
cplen = mdlen;
else
cplen = tkeylen;
/* We are unlikely to ever use more than 256 blocks (5120 bits!)
* but just in case...
*/
itmp[0] = (unsigned char)((i >> 24) & 0xff);
itmp[1] = (unsigned char)((i >> 16) & 0xff);
itmp[2] = (unsigned char)((i >> 8) & 0xff);
itmp[3] = (unsigned char)(i & 0xff);
HMAC_Init_ex(&hctx, pass, passlen, digest, NULL);
HMAC_Update(&hctx, salt, saltlen);
HMAC_Update(&hctx, itmp, 4);
HMAC_Final(&hctx, digtmp, NULL);
memcpy(p, digtmp, cplen);
for(j = 1; j < iter; j++)
{
HMAC(digest, pass, passlen,
digtmp, mdlen, digtmp, NULL);
for(k = 0; k < cplen; k++)
p[k] ^= digtmp[k];
}
tkeylen-= cplen;
i++;
p+= cplen;
}
HMAC_CTX_cleanup(&hctx);
return 1;
}
#endif /* OPENSSL_VERSION_NUMBER < 0x10000000L */
#define VG_PROTKEY_SALT_SIZE 4
#define VG_PROTKEY_HMAC_SIZE 8
#define VG_PROTKEY_HMAC_KEY_SIZE 16
@ -418,10 +530,11 @@ vg_protect_decode_privkey(EC_KEY *pkey, int *keytype,
int res;
res = vg_b58_decode_check(encoded, ecenc, sizeof(ecenc));
if (res != 45)
if (res != (33 + VG_PROTKEY_HMAC_SIZE + VG_PROTKEY_SALT_SIZE))
return 0;
memcpy(salt, ecenc + 41, VG_PROTKEY_SALT_SIZE);
memcpy(salt, ecenc + 33 + VG_PROTKEY_HMAC_SIZE,
VG_PROTKEY_SALT_SIZE);
ctx = EVP_CIPHER_CTX_new();