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Update SM9

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Zhi Guan
2022-05-13 18:10:25 +08:00
parent 87d1ab4ac9
commit 8a07619eea
11 changed files with 468 additions and 111 deletions
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src/sm3_kdf.c Normal file
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/*
* Copyright (c) 2014 - 2021 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 <string.h>
#include <gmssl/sm3.h>
#include <gmssl/endian.h>
#include <gmssl/error.h>
void sm3_kdf_init(SM3_KDF_CTX *ctx, size_t outlen)
{
sm3_init(&ctx->sm3_ctx);
ctx->outlen = outlen;
}
void sm3_kdf_update(SM3_KDF_CTX *ctx, const uint8_t *data, size_t datalen)
{
sm3_update(&ctx->sm3_ctx, data, datalen);
}
void sm3_kdf_finish(SM3_KDF_CTX *ctx, uint8_t *out)
{
SM3_CTX sm3_ctx;
size_t outlen = ctx->outlen;
uint8_t counter_be[4];
uint8_t dgst[SM3_DIGEST_SIZE];
uint32_t counter = 1;
size_t len;
while (outlen) {
PUTU32(counter_be, counter);
counter++;
sm3_ctx = ctx->sm3_ctx;
sm3_update(&sm3_ctx, counter_be, sizeof(counter_be));
sm3_finish(&sm3_ctx, dgst);
len = outlen < SM3_DIGEST_SIZE ? outlen : SM3_DIGEST_SIZE;
memcpy(out, dgst, len);
out += len;
outlen -= len;
}
memset(&sm3_ctx, 0, sizeof(SM3_CTX));
memset(dgst, 0, sizeof(dgst));
}