1 /* 2 * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 9 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 10 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 11 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 12 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 13 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 14 * PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 /* $Id: sha1.c,v 1.5 2020/02/25 05:00:43 jsg Exp $ */ 18 19 /* $NetBSD: sha1.c,v 1.5 2000/01/22 22:19:14 mycroft Exp $ */ 20 /* $OpenBSD: sha1.c,v 1.5 2020/02/25 05:00:43 jsg Exp $ */ 21 22 /*! \file 23 * SHA-1 in C 24 * \author By Steve Reid <steve@edmweb.com> 25 * 100% Public Domain 26 * \verbatim 27 * Test Vectors (from FIPS PUB 180-1) 28 * "abc" 29 * A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D 30 * "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" 31 * 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1 32 * A million repetitions of "a" 33 * 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F 34 * \endverbatim 35 */ 36 37 #include <isc/sha1.h> 38 #include <string.h> 39 #include <isc/util.h> 40 41 void 42 isc_sha1_init(isc_sha1_t *context) 43 { 44 INSIST(context != NULL); 45 46 context->ctx = EVP_MD_CTX_new(); 47 RUNTIME_CHECK(context->ctx != NULL); 48 if (EVP_DigestInit(context->ctx, EVP_sha1()) != 1) { 49 FATAL_ERROR(__FILE__, __LINE__, "Cannot initialize SHA1."); 50 } 51 } 52 53 void 54 isc_sha1_update(isc_sha1_t *context, const unsigned char *data, 55 unsigned int len) 56 { 57 INSIST(context != 0); 58 INSIST(context->ctx != 0); 59 INSIST(data != 0); 60 61 RUNTIME_CHECK(EVP_DigestUpdate(context->ctx, 62 (const void *) data, 63 (size_t) len) == 1); 64 } 65 66 void 67 isc_sha1_final(isc_sha1_t *context, unsigned char *digest) { 68 INSIST(digest != 0); 69 INSIST(context != 0); 70 INSIST(context->ctx != 0); 71 72 RUNTIME_CHECK(EVP_DigestFinal(context->ctx, digest, NULL) == 1); 73 EVP_MD_CTX_free(context->ctx); 74 context->ctx = NULL; 75 } 76