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add sms4 module

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Zhi Guan
2017-02-14 23:14:06 +08:00
parent 4e49434209
commit 01c76aa6a0
33 changed files with 3036 additions and 6 deletions
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84
crypto/sms4/sms4_enc.c Normal file
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/* ====================================================================
* Copyright (c) 2014 - 2017 The GmSSL 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 GmSSL Project.
* (http://gmssl.org/)"
*
* 4. The name "GmSSL Project" must not be used to endorse or promote
* products derived from this software without prior written
* permission. For written permission, please contact
* guanzhi1980@gmail.com.
*
* 5. Products derived from this software may not be called "GmSSL"
* nor may "GmSSL" appear in their names without prior written
* permission of the GmSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the GmSSL Project
* (http://gmssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE GmSSL 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 GmSSL 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.
* ====================================================================
*/
#include <openssl/sms4.h>
#include "sms4_lcl.h"
#define L32(x) \
((x) ^ \
ROT32((x), 2) ^ \
ROT32((x), 10) ^ \
ROT32((x), 18) ^ \
ROT32((x), 24))
#define ROUND(x0, x1, x2, x3, x4, i) \
x4 = x1 ^ x2 ^ x3 ^ *(rk + i); \
x4 = S32(x4); \
x4 = x0 ^ L32(x4)
void sms4_encrypt(const unsigned char *in, unsigned char *out, const sms4_key_t *key)
{
const uint32_t *rk = key->rk;
uint32_t x0, x1, x2, x3, x4;
x0 = GET32(in );
x1 = GET32(in + 4);
x2 = GET32(in + 8);
x3 = GET32(in + 12);
ROUNDS(x0, x1, x2, x3, x4);
PUT32(x0, out );
PUT32(x4, out + 4);
PUT32(x3, out + 8);
PUT32(x2, out + 12);
x0 = x1 = x2 = x3 = x4 = 0;
}