/* $NetBSD: sha2hl.c,v 1.1.1.1 2003/03/31 05:02:57 grant Exp $ */ /* * sha2hl.c * This code includes some functions taken from sha2.c, hence the * following licence reproduction. * * This code is not a verbatim copy, since some routines have been added, * and some bugs have been fixed. * * Version 1.0.0beta1 * * Written by Aaron D. Gifford * * Copyright 2000 Aaron D. Gifford. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the copyright holder nor the names of contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTOR(S) ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTOR(S) BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H #include #endif #include #ifndef lint __RCSID("$NetBSD: sha2hl.c,v 1.1.1.1 2003/03/31 05:02:57 grant Exp $"); #endif /* not lint */ /* #include "namespace.h" */ #include #ifdef HAVE_ERRNO_H #include #endif #ifdef HAVE_FCNTL_H #include #endif #include #include #include #include #include #ifndef _DIAGASSERT #define _DIAGASSERT(cond) assert(cond) #endif #ifndef MEMSET_BZERO #define MEMSET_BZERO(p,l) memset((p), 0, (l)) #endif /* * Constant used by SHA256/384/512_End() functions for converting the * digest to a readable hexadecimal character string: */ static const char sha2_hex_digits[] = "0123456789abcdef"; char * SHA256_File(char *filename, char *buf) { u_char buffer[BUFSIZ * 20]; SHA256_CTX ctx; int fd, num, oerrno; _DIAGASSERT(filename != NULL); /* XXX: buf may be NULL ? */ SHA256_Init(&ctx); if ((fd = open(filename, O_RDONLY)) < 0) return (0); while ((num = read(fd, buffer, sizeof(buffer))) > 0) SHA256_Update(&ctx, buffer, (size_t) num); oerrno = errno; close(fd); errno = oerrno; return (num < 0 ? 0 : SHA256_End(&ctx, buf)); } char * SHA256_End(SHA256_CTX *ctx, u_char *buffer) { u_char digest[SHA256_DIGEST_LENGTH], *d = digest; u_char *ret; int i; /* Sanity check: */ assert(ctx != NULL); if ((ret = buffer) != NULL) { SHA256_Final(digest, ctx); for (i = 0; i < SHA256_DIGEST_LENGTH; i++) { *buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4]; *buffer++ = sha2_hex_digits[*d & 0x0f]; d++; } *buffer = (char) 0; } else { (void) MEMSET_BZERO(ctx, sizeof(SHA256_CTX)); } (void) MEMSET_BZERO(digest, SHA256_DIGEST_LENGTH); return ret; } char * SHA256_Data(const u_char * data, size_t len, u_char *digest) { SHA256_CTX ctx; SHA256_Init(&ctx); SHA256_Update(&ctx, data, len); return SHA256_End(&ctx, digest); } char * SHA384_File(char *filename, char *buf) { SHA384_CTX ctx; u_char buffer[BUFSIZ * 20]; int fd, num, oerrno; _DIAGASSERT(filename != NULL); /* XXX: buf may be NULL ? */ SHA384_Init(&ctx); if ((fd = open(filename, O_RDONLY)) < 0) return (0); while ((num = read(fd, buffer, sizeof(buffer))) > 0) SHA384_Update(&ctx, buffer, (size_t) num); oerrno = errno; close(fd); errno = oerrno; return (num < 0 ? 0 : SHA384_End(&ctx, buf)); } char * SHA384_End(SHA384_CTX * ctx, char buffer[]) { u_char digest[SHA384_DIGEST_LENGTH], *d = digest; u_char *ret; int i; /* Sanity check: */ assert(ctx != NULL); if ((ret = buffer) != NULL) { SHA384_Final(digest, ctx); for (i = 0; i < SHA384_DIGEST_LENGTH; i++) { *buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4]; *buffer++ = sha2_hex_digits[*d & 0x0f]; d++; } *buffer = (char) 0; } else { (void) MEMSET_BZERO(ctx, sizeof(SHA384_CTX)); } (void) MEMSET_BZERO(digest, SHA384_DIGEST_LENGTH); return ret; } char * SHA384_Data(const u_char * data, size_t len, char digest[SHA384_DIGEST_STRING_LENGTH]) { SHA384_CTX ctx; SHA384_Init(&ctx); SHA384_Update(&ctx, data, len); return SHA384_End(&ctx, digest); } char * SHA512_File(char *filename, char *buf) { SHA512_CTX ctx; u_char buffer[BUFSIZ * 20]; int fd, num, oerrno; _DIAGASSERT(filename != NULL); /* XXX: buf may be NULL ? */ SHA512_Init(&ctx); if ((fd = open(filename, O_RDONLY)) < 0) return (0); while ((num = read(fd, buffer, sizeof(buffer))) > 0) SHA512_Update(&ctx, buffer, (size_t) num); oerrno = errno; close(fd); errno = oerrno; return (num < 0 ? 0 : SHA512_End(&ctx, buf)); } char * SHA512_End(SHA512_CTX * ctx, char buffer[]) { u_char digest[SHA512_DIGEST_LENGTH], *d = digest; u_char *ret; int i; /* Sanity check: */ assert(ctx != NULL); if ((ret = buffer) != NULL) { SHA512_Final(digest, ctx); for (i = 0; i < SHA512_DIGEST_LENGTH; i++) { *buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4]; *buffer++ = sha2_hex_digits[*d & 0x0f]; d++; } *buffer = (char) 0; } else { (void) MEMSET_BZERO(ctx, sizeof(SHA512_CTX)); } (void) MEMSET_BZERO(digest, SHA512_DIGEST_LENGTH); return ret; } char * SHA512_Data(const u_char * data, size_t len, char *digest) { SHA512_CTX ctx; SHA512_Init(&ctx); SHA512_Update(&ctx, data, len); return SHA512_End(&ctx, digest); }