494 lines
13 KiB
C
494 lines
13 KiB
C
/* $NetBSD: sha2hl.c,v 1.7 2007/07/31 13:17:34 joerg Exp $ */
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/*
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* sha2hl.c
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* This code includes some functions taken from sha2.c, hence the
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* following licence reproduction.
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*
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* This code is not a verbatim copy, since some routines have been added,
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* and some bugs have been fixed.
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*
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* Version 1.0.0beta1
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*
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* Written by Aaron D. Gifford <me@aarongifford.com>
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*
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* Copyright 2000 Aaron D. Gifford. 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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* 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTOR(S) ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTOR(S) BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <assert.h>
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#include <minix/sha2.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#ifndef _DIAGASSERT
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#define _DIAGASSERT(cond) assert(cond)
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#endif
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#ifndef MEMSET_BZERO
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#define MEMSET_BZERO(p,l) memset((p), 0, (l))
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#endif
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/*
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* Constant used by SHA256/384/512_End() functions for converting the
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* digest to a readable hexadecimal character string:
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*/
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static const char sha2_hex_digits[] = "0123456789abcdef";
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char *
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SHA256_File(char *filename, char *buf)
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{
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unsigned char buffer[SHA256_DIGEST_STRING_LENGTH];
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SHA256_CTX ctx;
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int fd, num, oerrno;
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_DIAGASSERT(filename != NULL);
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/* XXX: buf may be NULL ? */
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SHA256_Init(&ctx);
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if ((fd = open(filename, O_RDONLY)) < 0)
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return (0);
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while ((num = read(fd, buffer, sizeof(buffer))) > 0)
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SHA256_Update(&ctx, buffer, (size_t) num);
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oerrno = errno;
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close(fd);
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errno = oerrno;
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return (num < 0 ? 0 : SHA256_End(&ctx, buf));
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}
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char *
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SHA256_End(SHA256_CTX *ctx, char buffer[SHA256_DIGEST_STRING_LENGTH])
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{
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unsigned char digest[SHA256_DIGEST_LENGTH], *d = digest;
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unsigned char *ret;
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int i;
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/* Sanity check: */
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assert(ctx != NULL);
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if ((ret = (unsigned char *)buffer) != NULL) {
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SHA256_Final(digest, ctx);
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for (i = 0; i < SHA256_DIGEST_LENGTH; i++) {
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*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
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*buffer++ = sha2_hex_digits[*d & 0x0f];
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d++;
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}
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*buffer = (char) 0;
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} else {
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(void) MEMSET_BZERO(ctx, sizeof(SHA256_CTX));
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}
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(void) MEMSET_BZERO(digest, SHA256_DIGEST_LENGTH);
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return (char *)ret;
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}
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char *
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SHA256_Data(const uint8_t * data, size_t len, unsigned char digest[SHA256_DIGEST_STRING_LENGTH])
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{
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SHA256_CTX ctx;
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SHA256_Init(&ctx);
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SHA256_Update(&ctx, data, len);
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return SHA256_End(&ctx, (char *)digest);
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}
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char *
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SHA384_File(char *filename, char *buf)
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{
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SHA384_CTX ctx;
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unsigned char buffer[SHA384_DIGEST_STRING_LENGTH];
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int fd, num, oerrno;
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_DIAGASSERT(filename != NULL);
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/* XXX: buf may be NULL ? */
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SHA384_Init(&ctx);
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if ((fd = open(filename, O_RDONLY)) < 0)
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return (0);
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while ((num = read(fd, buffer, sizeof(buffer))) > 0)
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SHA384_Update(&ctx, buffer, (size_t) num);
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oerrno = errno;
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close(fd);
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errno = oerrno;
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return (num < 0 ? 0 : SHA384_End(&ctx, buf));
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}
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char *
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SHA384_End(SHA384_CTX * ctx, char buffer[SHA384_DIGEST_STRING_LENGTH])
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{
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unsigned char digest[SHA384_DIGEST_LENGTH], *d = digest;
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unsigned char *ret;
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int i;
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/* Sanity check: */
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assert(ctx != NULL);
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if ((ret = (unsigned char *)buffer) != NULL) {
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SHA384_Final(digest, ctx);
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for (i = 0; i < SHA384_DIGEST_LENGTH; i++) {
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*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
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*buffer++ = sha2_hex_digits[*d & 0x0f];
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d++;
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}
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*buffer = (char) 0;
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} else {
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(void) MEMSET_BZERO(ctx, sizeof(SHA384_CTX));
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}
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(void) MEMSET_BZERO(digest, SHA384_DIGEST_LENGTH);
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return (char *)ret;
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}
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char *
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SHA384_Data(const uint8_t* data, size_t len, char digest[SHA384_DIGEST_STRING_LENGTH])
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{
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SHA384_CTX ctx;
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SHA384_Init(&ctx);
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SHA384_Update(&ctx, data, len);
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return SHA384_End(&ctx, digest);
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}
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char *
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SHA512_File(char *filename, char *buf)
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{
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SHA512_CTX ctx;
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unsigned char buffer[SHA512_DIGEST_STRING_LENGTH];
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int fd, num, oerrno;
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_DIAGASSERT(filename != NULL);
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/* XXX: buf may be NULL ? */
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SHA512_Init(&ctx);
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if ((fd = open(filename, O_RDONLY)) < 0)
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return (0);
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while ((num = read(fd, buffer, sizeof(buffer))) > 0)
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SHA512_Update(&ctx, buffer, (size_t) num);
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oerrno = errno;
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close(fd);
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errno = oerrno;
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return (num < 0 ? 0 : SHA512_End(&ctx, buf));
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}
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char *
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SHA512_End(SHA512_CTX * ctx, char buffer[SHA512_DIGEST_STRING_LENGTH])
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{
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unsigned char digest[SHA512_DIGEST_LENGTH], *d = digest;
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unsigned char *ret;
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int i;
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/* Sanity check: */
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assert(ctx != NULL);
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if ((ret = (unsigned char *)buffer) != NULL) {
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SHA512_Final(digest, ctx);
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for (i = 0; i < SHA512_DIGEST_LENGTH; i++) {
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*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
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*buffer++ = sha2_hex_digits[*d & 0x0f];
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d++;
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}
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*buffer = (char) 0;
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} else {
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(void) MEMSET_BZERO(ctx, sizeof(SHA512_CTX));
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}
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(void) MEMSET_BZERO(digest, SHA512_DIGEST_LENGTH);
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return (char *)ret;
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}
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char *
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SHA512_Data(const uint8_t * data, size_t len, char *digest)
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{
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SHA512_CTX ctx;
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SHA512_Init(&ctx);
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SHA512_Update(&ctx, data, len);
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return SHA512_End(&ctx, digest);
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}
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/* $NetBSD: sha2hl.c,v 1.7 2007/07/31 13:17:34 joerg Exp $ */
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/*
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* sha2hl.c
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* This code includes some functions taken from sha2.c, hence the
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* following licence reproduction.
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*
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* This code is not a verbatim copy, since some routines have been added,
|
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* and some bugs have been fixed.
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*
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* Version 1.0.0beta1
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*
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* Written by Aaron D. Gifford <me@aarongifford.com>
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*
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* Copyright 2000 Aaron D. Gifford. 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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* 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of contributors
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* may be used to endorse or promote products derived from this software
|
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTOR(S) ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTOR(S) BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <assert.h>
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#include <minix/sha2.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#ifndef _DIAGASSERT
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#define _DIAGASSERT(cond) assert(cond)
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#endif
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#ifndef MEMSET_BZERO
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#define MEMSET_BZERO(p,l) memset((p), 0, (l))
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#endif
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/*
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* Constant used by SHA256/384/512_End() functions for converting the
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* digest to a readable hexadecimal character string:
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*/
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static const char sha2_hex_digits[] = "0123456789abcdef";
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char *
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SHA256_File(char *filename, char *buf)
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{
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unsigned char buffer[SHA256_DIGEST_STRING_LENGTH];
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SHA256_CTX ctx;
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int fd, num, oerrno;
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_DIAGASSERT(filename != NULL);
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/* XXX: buf may be NULL ? */
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SHA256_Init(&ctx);
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if ((fd = open(filename, O_RDONLY)) < 0)
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return (0);
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while ((num = read(fd, buffer, sizeof(buffer))) > 0)
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SHA256_Update(&ctx, buffer, (size_t) num);
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oerrno = errno;
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close(fd);
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errno = oerrno;
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return (num < 0 ? 0 : SHA256_End(&ctx, buf));
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}
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char *
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SHA256_End(SHA256_CTX *ctx, char buffer[SHA256_DIGEST_STRING_LENGTH])
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{
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unsigned char digest[SHA256_DIGEST_LENGTH], *d = digest;
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unsigned char *ret;
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int i;
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/* Sanity check: */
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assert(ctx != NULL);
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if ((ret = (unsigned char *)buffer) != NULL) {
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SHA256_Final(digest, ctx);
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for (i = 0; i < SHA256_DIGEST_LENGTH; i++) {
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*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
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*buffer++ = sha2_hex_digits[*d & 0x0f];
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d++;
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}
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*buffer = (char) 0;
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} else {
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(void) MEMSET_BZERO(ctx, sizeof(SHA256_CTX));
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}
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(void) MEMSET_BZERO(digest, SHA256_DIGEST_LENGTH);
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return (char *)ret;
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}
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char *
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SHA256_Data(const uint8_t * data, size_t len, unsigned char digest[SHA256_DIGEST_STRING_LENGTH])
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{
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SHA256_CTX ctx;
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SHA256_Init(&ctx);
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SHA256_Update(&ctx, data, len);
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return SHA256_End(&ctx, (char *)digest);
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}
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char *
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SHA384_File(char *filename, char *buf)
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{
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SHA384_CTX ctx;
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unsigned char buffer[SHA384_DIGEST_STRING_LENGTH];
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int fd, num, oerrno;
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_DIAGASSERT(filename != NULL);
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/* XXX: buf may be NULL ? */
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SHA384_Init(&ctx);
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if ((fd = open(filename, O_RDONLY)) < 0)
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return (0);
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while ((num = read(fd, buffer, sizeof(buffer))) > 0)
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SHA384_Update(&ctx, buffer, (size_t) num);
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oerrno = errno;
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close(fd);
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errno = oerrno;
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return (num < 0 ? 0 : SHA384_End(&ctx, buf));
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}
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char *
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SHA384_End(SHA384_CTX * ctx, char buffer[SHA384_DIGEST_STRING_LENGTH])
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{
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unsigned char digest[SHA384_DIGEST_LENGTH], *d = digest;
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unsigned char *ret;
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int i;
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/* Sanity check: */
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assert(ctx != NULL);
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if ((ret = (unsigned char *)buffer) != NULL) {
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SHA384_Final(digest, ctx);
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for (i = 0; i < SHA384_DIGEST_LENGTH; i++) {
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*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
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*buffer++ = sha2_hex_digits[*d & 0x0f];
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d++;
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}
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*buffer = (char) 0;
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} else {
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(void) MEMSET_BZERO(ctx, sizeof(SHA384_CTX));
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}
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(void) MEMSET_BZERO(digest, SHA384_DIGEST_LENGTH);
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return (char *)ret;
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}
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char *
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SHA384_Data(const uint8_t* data, size_t len, char digest[SHA384_DIGEST_STRING_LENGTH])
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{
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SHA384_CTX ctx;
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SHA384_Init(&ctx);
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SHA384_Update(&ctx, data, len);
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return SHA384_End(&ctx, digest);
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}
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char *
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SHA512_File(char *filename, char *buf)
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{
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SHA512_CTX ctx;
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unsigned char buffer[SHA512_DIGEST_STRING_LENGTH];
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int fd, num, oerrno;
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_DIAGASSERT(filename != NULL);
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/* XXX: buf may be NULL ? */
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SHA512_Init(&ctx);
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if ((fd = open(filename, O_RDONLY)) < 0)
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return (0);
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while ((num = read(fd, buffer, sizeof(buffer))) > 0)
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SHA512_Update(&ctx, buffer, (size_t) num);
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oerrno = errno;
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close(fd);
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errno = oerrno;
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return (num < 0 ? 0 : SHA512_End(&ctx, buf));
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}
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char *
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SHA512_End(SHA512_CTX * ctx, char buffer[SHA512_DIGEST_STRING_LENGTH])
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{
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unsigned char digest[SHA512_DIGEST_LENGTH], *d = digest;
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unsigned char *ret;
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int i;
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/* Sanity check: */
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assert(ctx != NULL);
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if ((ret = (unsigned char *)buffer) != NULL) {
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SHA512_Final(digest, ctx);
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for (i = 0; i < SHA512_DIGEST_LENGTH; i++) {
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*buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
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*buffer++ = sha2_hex_digits[*d & 0x0f];
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d++;
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}
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*buffer = (char) 0;
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} else {
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(void) MEMSET_BZERO(ctx, sizeof(SHA512_CTX));
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}
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(void) MEMSET_BZERO(digest, SHA512_DIGEST_LENGTH);
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return (char *)ret;
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}
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char *
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SHA512_Data(const uint8_t * data, size_t len, char *digest)
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{
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SHA512_CTX ctx;
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SHA512_Init(&ctx);
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SHA512_Update(&ctx, data, len);
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return SHA512_End(&ctx, digest);
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}
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