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/*
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistribution 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.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind.
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.
* SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE
* FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL
* SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA,
* OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
* PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF
* LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
* EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*/
#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <ipmitool/helper.h>
#include <ipmitool/bswap.h>
#include <ipmitool/ipmi.h>
#include <ipmitool/ipmi_intf.h>
#if HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef HAVE_CRYPTO_MD2
# include <openssl/md2.h>
#endif
#ifdef HAVE_CRYPTO_MD5
# include <openssl/md5.h>
#else
# include "md5.h"
#endif
/*
* multi-session authcode generation for MD5
* H(password + session_id + msg + session_seq + password)
*
* Use OpenSSL implementation of MD5 algorithm if found
*/
uint8_t * ipmi_auth_md5(struct ipmi_session * s, uint8_t * data, int data_len)
{
#ifdef HAVE_CRYPTO_MD5
MD5_CTX ctx;
static uint8_t md[16];
uint32_t temp;
#if WORDS_BIGENDIAN
temp = BSWAP_32(s->in_seq);
#else
temp = s->in_seq;
#endif
memset(md, 0, 16);
memset(&ctx, 0, sizeof(MD5_CTX));
MD5_Init(&ctx);
MD5_Update(&ctx, (const uint8_t *)s->authcode, 16);
MD5_Update(&ctx, (const uint8_t *)&s->session_id, 4);
MD5_Update(&ctx, (const uint8_t *)data, data_len);
MD5_Update(&ctx, (const uint8_t *)&temp, sizeof(uint32_t));
MD5_Update(&ctx, (const uint8_t *)s->authcode, 16);
MD5_Final(md, &ctx);
if (verbose > 3)
printf(" MD5 AuthCode : %s\n", buf2str(md, 16));
return md;
#else /*HAVE_CRYPTO_MD5*/
md5_state_t state;
static md5_byte_t digest[16];
uint32_t temp;
memset(digest, 0, 16);
memset(&state, 0, sizeof(md5_state_t));
md5_init(&state);
md5_append(&state, (const md5_byte_t *)s->authcode, 16);
md5_append(&state, (const md5_byte_t *)&s->session_id, 4);
md5_append(&state, (const md5_byte_t *)data, data_len);
#if WORDS_BIGENDIAN
temp = BSWAP_32(s->in_seq);
#else
temp = s->in_seq;
#endif
md5_append(&state, (const md5_byte_t *)&temp, 4);
md5_append(&state, (const md5_byte_t *)s->authcode, 16);
md5_finish(&state, digest);
if (verbose > 3)
printf(" MD5 AuthCode : %s\n", buf2str(digest, 16));
return digest;
#endif /*HAVE_CRYPTO_MD5*/
}
#ifdef HAVE_CRYPTO_MD2
#define __MD2_ONLY__(x) x
#else
#define __MD2_ONLY__(x) __UNUSED__(x)
#endif
/*
* multi-session authcode generation for MD2
* H(password + session_id + msg + session_seq + password)
*
* Use OpenSSL implementation of MD2 algorithm if found.
* This function is analogous to ipmi_auth_md5
*/
uint8_t * ipmi_auth_md2(
struct ipmi_session *__MD2_ONLY__(s),
uint8_t *__MD2_ONLY__(data),
int __MD2_ONLY__(data_len))
{
#ifdef HAVE_CRYPTO_MD2
MD2_CTX ctx;
static uint8_t md[16];
uint32_t temp;
#if WORDS_BIGENDIAN
temp = BSWAP_32(s->in_seq);
#else
temp = s->in_seq;
#endif
memset(md, 0, 16);
memset(&ctx, 0, sizeof(MD2_CTX));
MD2_Init(&ctx);
MD2_Update(&ctx, (const uint8_t *)s->authcode, 16);
MD2_Update(&ctx, (const uint8_t *)&s->session_id, 4);
MD2_Update(&ctx, (const uint8_t *)data, data_len);
MD2_Update(&ctx, (const uint8_t *)&temp, sizeof(uint32_t));
MD2_Update(&ctx, (const uint8_t *)s->authcode, 16);
MD2_Final(md, &ctx);
if (verbose > 3)
printf(" MD2 AuthCode : %s\n", buf2str(md, 16));
return md;
#else /*HAVE_CRYPTO_MD2*/
static uint8_t md[16];
memset(md, 0, 16);
printf("WARNING: No internal support for MD2! "
"Please re-compile with OpenSSL.\n");
return md;
#endif /*HAVE_CRYPTO_MD2*/
}
/* special authentication method */
uint8_t * ipmi_auth_special(struct ipmi_session * s)
{
#ifdef HAVE_CRYPTO_MD5
MD5_CTX ctx;
static uint8_t md[16];
uint8_t challenge[16];
int i;
memset(challenge, 0, 16);
memset(md, 0, 16);
memset(&ctx, 0, sizeof(MD5_CTX));
MD5_Init(&ctx);
MD5_Update(&ctx, (const uint8_t *)s->authcode, strlen((const char *)s->authcode));
MD5_Final(md, &ctx);
for (i=0; i<16; i++)
challenge[i] = s->challenge[i] ^ md[i];
memset(md, 0, 16);
memset(&ctx, 0, sizeof(MD5_CTX));
MD5_Init(&ctx);
MD5_Update(&ctx, (const uint8_t *)challenge, 16);
MD5_Final(md, &ctx);
return md;
#else /*HAVE_CRYPTO_MD5*/
int i;
md5_state_t state;
static md5_byte_t digest[16];
uint8_t challenge[16];
memset(challenge, 0, 16);
memset(digest, 0, 16);
memset(&state, 0, sizeof(md5_state_t));
md5_init(&state);
md5_append(&state, (const md5_byte_t *)s->authcode, strlen(s->authcode));
md5_finish(&state, digest);
for (i=0; i<16; i++)
challenge[i] = s->challenge[i] ^ digest[i];
memset(digest, 0, 16);
memset(&state, 0, sizeof(md5_state_t));
md5_init(&state);
md5_append(&state, (const md5_byte_t *)challenge, 16);
md5_finish(&state, digest);
return digest;
#endif /*HAVE_CRYPTO_MD5*/
}
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