| /* |
| * FILE: sha2prog.c |
| * AUTHOR: Aaron D. Gifford - http://www.aarongifford.com/ |
| * |
| * Copyright (c) 2000-2001, 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 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 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. |
| * |
| * $Id: sha2prog.c,v 1.1 2001/11/08 00:02:11 adg Exp adg $ |
| */ |
| |
| #include <stdio.h> |
| #include <sysexits.h> |
| #include <sys/types.h> |
| #include <sys/uio.h> |
| #include <unistd.h> |
| |
| #include "sha2.h" |
| |
| void usage(char *prog, char *msg) { |
| fprintf(stderr, "%s\nUsage:\t%s [options] [<file>]\nOptions:\n\t-256\tGenerate SHA-256 hash\n\t-384\tGenerate SHA-284 hash\n\t-512\tGenerate SHA-512 hash\n\t-ALL\tGenerate all three hashes\n\t-q\tQuiet mode - only output hexadecimal hashes, one per line\n\n", msg, prog); |
| exit(-1); |
| } |
| |
| #define BUFLEN 16384 |
| |
| int main(int argc, char **argv) { |
| int kl, l, fd, ac; |
| int quiet = 0, hash = 0; |
| char *av, *file = (char*)0; |
| FILE *IN = (FILE*)0; |
| SHA256_CTX ctx256; |
| SHA384_CTX ctx384; |
| SHA512_CTX ctx512; |
| unsigned char buf[BUFLEN]; |
| |
| SHA256_Init(&ctx256); |
| SHA384_Init(&ctx384); |
| SHA512_Init(&ctx512); |
| |
| /* Read data from STDIN by default */ |
| fd = fileno(stdin); |
| |
| ac = 1; |
| while (ac < argc) { |
| if (*argv[ac] == '-') { |
| av = argv[ac] + 1; |
| if (!strcmp(av, "q")) { |
| quiet = 1; |
| } else if (!strcmp(av, "256")) { |
| hash |= 1; |
| } else if (!strcmp(av, "384")) { |
| hash |= 2; |
| } else if (!strcmp(av, "512")) { |
| hash |= 4; |
| } else if (!strcmp(av, "ALL")) { |
| hash = 7; |
| } else { |
| usage(argv[0], "Invalid option."); |
| } |
| ac++; |
| } else { |
| file = argv[ac++]; |
| if (ac != argc) { |
| usage(argv[0], "Too many arguments."); |
| } |
| if ((IN = fopen(file, "r")) == NULL) { |
| perror(argv[0]); |
| exit(-1); |
| } |
| fd = fileno(IN); |
| } |
| } |
| if (hash == 0) |
| hash = 7; /* Default to ALL */ |
| |
| kl = 0; |
| while ((l = read(fd,buf,BUFLEN)) > 0) { |
| kl += l; |
| SHA256_Update(&ctx256, (unsigned char*)buf, l); |
| SHA384_Update(&ctx384, (unsigned char*)buf, l); |
| SHA512_Update(&ctx512, (unsigned char*)buf, l); |
| } |
| if (file) { |
| fclose(IN); |
| } |
| |
| if (hash & 1) { |
| SHA256_End(&ctx256, buf); |
| if (!quiet) |
| printf("SHA-256 (%s) = ", file); |
| printf("%s\n", buf); |
| } |
| if (hash & 2) { |
| SHA384_End(&ctx384, buf); |
| if (!quiet) |
| printf("SHA-384 (%s) = ", file); |
| printf("%s\n", buf); |
| } |
| if (hash & 4) { |
| SHA512_End(&ctx512, buf); |
| if (!quiet) |
| printf("SHA-512 (%s) = ", file); |
| printf("%s\n", buf); |
| } |
| |
| return 1; |
| } |
| |