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 struct mesa_sha1 * 31 _mesa_sha1_init(void) 32 { 33 SHA1_CTX *ctx = malloc(sizeof(*ctx)); 34 35 if (!ctx) 36 return NULL; 37 38 SHA1Init(ctx); 39 return (struct mesa_sha1 *) ctx; 40 } 41 42 int 43 _mesa_sha1_update(struct mesa_sha1 *ctx, const void *data, int size) 44 { 45 SHA1_CTX *sha1_ctx = (SHA1_CTX *) ctx; 46 47 SHA1Update(sha1_ctx, data, size); 48 return 1; 49 } 50 51 int 52 _mesa_sha1_final(struct mesa_sha1 *ctx, unsigned char result[20]) 53 { 54 SHA1_CTX *sha1_ctx = (SHA1_CTX *) ctx; 55 56 SHA1Final(result, sha1_ctx); 57 free(sha1_ctx); 58 return 1; 59 } 60 61 void 62 _mesa_sha1_compute(const void *data, size_t size, unsigned char result[20]) 63 { 64 struct mesa_sha1 *ctx; 65 66 ctx = _mesa_sha1_init(); 67 _mesa_sha1_update(ctx, data, size); 68 _mesa_sha1_final(ctx, result); 69 } 70 71 char * 72 _mesa_sha1_format(char *buf, const unsigned char *sha1) 73 { 74 static const char hex_digits[] = "0123456789abcdef"; 75 int i; 76 77 for (i = 0; i < 40; i += 2) { 78 buf[i] = hex_digits[sha1[i >> 1] >> 4]; 79 buf[i + 1] = hex_digits[sha1[i >> 1] & 0x0f]; 80 } 81 buf[i] = '\0'; 82 83 return buf; 84 } 85
