mirror of
https://github.com/guanzhi/GmSSL.git
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76 lines
2.7 KiB
C
76 lines
2.7 KiB
C
/*
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* Copyright (c) 2014 - 2020 The GmSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the GmSSL Project.
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* (http://gmssl.org/)"
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*
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* 4. The name "GmSSL Project" must not be used to endorse or promote
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* products derived from this software without prior written
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* permission. For written permission, please contact
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* guanzhi1980@gmail.com.
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*
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* 5. Products derived from this software may not be called "GmSSL"
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* nor may "GmSSL" appear in their names without prior written
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* permission of the GmSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the GmSSL Project
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* (http://gmssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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int sm9_hash1(bignum_t r, const char *id, size_t idlen, uint8_t hid)
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{
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bignum_t h;
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SM3_CTX ctx1;
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SM3_CTX ctx2;
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uint8_t prefix[1] = {0x01};
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uint8_t ct1[4] = {0x00, 0x00, 0x00, 0x01};
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uint8_t ct2[4] = {0x00, 0x00, 0x00, 0x02};
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uint8_t buf[64];
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sm3_init(&ctx1);
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sm3_update(&ctx1, prefix, sizeof(prefix));
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sm3_update(&ctx1, id, idlen);
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sm3_update(&ctx1, &hid, 1);
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memcpy(&ctx2, &ctx1, sizeof(SM3_CTX));
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sm3_update(&ctx1, ct1, sizeof(ct1));
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sm3_update(&ctx2, ct2, sizeof(ct2));
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sm3_finish(&ctx1, buf);
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sm3_finish(&ctx2, buf + 32);
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}
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