d93aa10bac
For consistency and safety, change the CMC and HSH functions to accept signed lengths and handle negative values as errors. Also, change the input data type to void * to not require casting in the caller.
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
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chronyd/chronyc - Programs for keeping computer clocks accurate.
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**********************************************************************
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* Copyright (C) Miroslav Lichvar 2012
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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**********************************************************************
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=======================================================================
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Routines implementing crypto hashing using internal MD5 implementation.
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*/
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#include "config.h"
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#include "sysincl.h"
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#include "hash.h"
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#include "memory.h"
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#include "util.h"
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#include "md5.c"
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static MD5_CTX ctx;
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int
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HSH_GetHashId(HSH_Algorithm algorithm)
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{
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/* only MD5 is supported */
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if (algorithm != HSH_MD5)
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return -1;
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return 0;
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}
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int
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HSH_Hash(int id, const void *in1, int in1_len, const void *in2, int in2_len,
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unsigned char *out, int out_len)
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{
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if (in1_len < 0 || in2_len < 0 || out_len < 0)
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return 0;
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MD5Init(&ctx);
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MD5Update(&ctx, in1, in1_len);
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if (in2)
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MD5Update(&ctx, in2, in2_len);
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MD5Final(&ctx);
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out_len = MIN(out_len, 16);
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memcpy(out, ctx.digest, out_len);
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return out_len;
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}
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void
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HSH_Finalise(void)
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{
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}
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