src/util/mesa-sha1.c

   1 /* Copyright © 2007 Carl Worth
   2  * Copyright © 2009 Jeremy Huddleston, Julien Cristau, and Matthieu Herrb
   3  * Copyright © 2009-2010 Mikhail Gusarov
   4  * Copyright © 2012 Yaakov Selkowitz and Keith Packard
   5  * Copyright © 2014 Intel Corporation
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24  * DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 #include "sha1/sha1.h"
  28 #include "mesa-sha1.h"
  29
  30 void
  31 _mesa_sha1_update(struct mesa_sha1 *ctx, const void *data, int size)
  32 {
  33    SHA1Update(ctx, data, size);
  34 }
  35
  36 void
  37 _mesa_sha1_compute(const void *data, size_t size, unsigned char result[20])
  38 {
  39    struct mesa_sha1 ctx;
  40
  41    _mesa_sha1_init(&ctx);
  42    _mesa_sha1_update(&ctx, data, size);
  43    _mesa_sha1_final(&ctx, result);
  44 }
  45
  46 void
  47 _mesa_sha1_format(char *buf, const unsigned char *sha1)
  48 {
  49    static const char hex_digits[] = "0123456789abcdef";
  50    int i;
  51
  52    for (i = 0; i < 40; i += 2) {
  53       buf[i] = hex_digits[sha1[i >> 1] >> 4];
  54       buf[i + 1] = hex_digits[sha1[i >> 1] & 0x0f];
  55    }
  56    buf[i] = '\0';
  57 }