301 lines
8.4 KiB
C
301 lines
8.4 KiB
C
/* LibTomCrypt, modular cryptographic library -- Tom St Denis
|
|
*
|
|
* LibTomCrypt is a library that provides various cryptographic
|
|
* algorithms in a highly modular and flexible manner.
|
|
*
|
|
* The library is free for all purposes without any express
|
|
* guarantee it works.
|
|
*/
|
|
|
|
/*
|
|
* Written by Daniel Richards <kyhwana@world-net.co.nz> 6/7/2002
|
|
* hash.c: This app uses libtomcrypt to hash either stdin or a file
|
|
* This file is Public Domain. No rights are reserved.
|
|
* Compile with 'gcc hashsum.c -o hashsum -ltomcrypt'
|
|
* This example isn't really big enough to warrent splitting into
|
|
* more functions ;)
|
|
*/
|
|
|
|
#include <tomcrypt.h>
|
|
|
|
#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L
|
|
#include <libgen.h>
|
|
#else
|
|
#define basename(x) x
|
|
#endif
|
|
|
|
#if !defined(PATH_MAX) && defined(_MSC_VER)
|
|
#include <windows.h>
|
|
#define PATH_MAX MAX_PATH
|
|
#endif
|
|
|
|
/* thanks http://stackoverflow.com/a/8198009 */
|
|
#define _base(x) ((x >= '0' && x <= '9') ? '0' : \
|
|
(x >= 'a' && x <= 'f') ? 'a' - 10 : \
|
|
(x >= 'A' && x <= 'F') ? 'A' - 10 : \
|
|
'\255')
|
|
#define HEXOF(x) (x - _base(x))
|
|
|
|
static char* hashsum;
|
|
|
|
static void cleanup(void)
|
|
{
|
|
free(hashsum);
|
|
}
|
|
|
|
static void die(int status)
|
|
{
|
|
unsigned long w, x;
|
|
FILE* o = status == EXIT_SUCCESS ? stdout : stderr;
|
|
fprintf(o, "usage: %s -a algorithm [-c] [file...]\n\n", hashsum);
|
|
fprintf(o, "\t-c\tCheck the hash(es) of the file(s) written in [file].\n");
|
|
fprintf(o, "\t\t(-a not required)\n");
|
|
fprintf(o, "\nAlgorithms:\n\t");
|
|
w = 0;
|
|
for (x = 0; hash_descriptor[x].name != NULL; x++) {
|
|
w += fprintf(o, "%-14s", hash_descriptor[x].name);
|
|
if (w >= 70) {
|
|
fprintf(o, "\n\t");
|
|
w = 0;
|
|
}
|
|
}
|
|
if (w != 0) fprintf(o, "\n");
|
|
exit(status);
|
|
}
|
|
|
|
static void printf_hex(unsigned char* hash_buffer, unsigned long w)
|
|
{
|
|
unsigned long x;
|
|
for (x = 0; x < w; x++) {
|
|
printf("%02x",hash_buffer[x]);
|
|
}
|
|
}
|
|
|
|
static void check_file(int argn, int argc, char **argv)
|
|
{
|
|
int err, failed, invalid;
|
|
unsigned char is_buffer[MAXBLOCKSIZE], should_buffer[MAXBLOCKSIZE];
|
|
char buf[PATH_MAX + (MAXBLOCKSIZE * 3)];
|
|
/* iterate through all files */
|
|
while(argn < argc) {
|
|
char* s;
|
|
FILE* f = fopen(argv[argn], "rb");
|
|
if(f == NULL) {
|
|
int n = snprintf(buf, sizeof(buf), "%s: %s", hashsum, argv[argn]);
|
|
if (n > 0 && n < (int)sizeof(buf))
|
|
perror(buf);
|
|
else
|
|
perror(argv[argn]);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
failed = 0;
|
|
invalid = 0;
|
|
/* read the file line by line */
|
|
while((s = fgets(buf, sizeof(buf), f)) != NULL)
|
|
{
|
|
int tries, n;
|
|
unsigned long hash_len, w, x;
|
|
char* space = strstr(s, " ");
|
|
|
|
/* skip lines with comments */
|
|
if (buf[0] == '#') continue;
|
|
|
|
if (space == NULL) {
|
|
fprintf(stderr, "%s: no properly formatted checksum lines found\n", hashsum);
|
|
goto ERR;
|
|
}
|
|
|
|
hash_len = space - s;
|
|
hash_len /= 2;
|
|
|
|
if (hash_len > sizeof(should_buffer)) {
|
|
fprintf(stderr, "%s: hash too long\n", hashsum);
|
|
goto ERR;
|
|
}
|
|
|
|
/* convert the hex-string back to binary */
|
|
for (x = 0; x < hash_len; ++x) {
|
|
should_buffer[x] = HEXOF(s[x*2]) << 4 | HEXOF(s[x*2 + 1]);
|
|
}
|
|
|
|
space++;
|
|
if (*space != '*') {
|
|
fprintf(stderr, "%s: unsupported input mode '%c'\n", hashsum, *space);
|
|
goto ERR;
|
|
}
|
|
space++;
|
|
|
|
for (n = 0; n < (buf + sizeof(buf)) - space; ++n) {
|
|
if(iscntrl((int)space[n])) {
|
|
space[n] = '\0';
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* try all hash algorithms that have the appropriate hash size */
|
|
tries = 0;
|
|
for (x = 0; hash_descriptor[x].name != NULL; ++x) {
|
|
if (hash_descriptor[x].hashsize == hash_len) {
|
|
tries++;
|
|
w = sizeof(is_buffer);
|
|
if ((err = hash_file(x, space, is_buffer, &w)) != CRYPT_OK) {
|
|
fprintf(stderr, "%s: File hash error: %s: %s\n", hashsum, space, error_to_string(err));
|
|
ERR:
|
|
fclose(f);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
if(XMEMCMP(should_buffer, is_buffer, w) == 0) {
|
|
printf("%s: OK\n", space);
|
|
break;
|
|
}
|
|
}
|
|
} /* for */
|
|
if (hash_descriptor[x].name == NULL) {
|
|
if(tries > 0) {
|
|
printf("%s: FAILED\n", space);
|
|
failed++;
|
|
}
|
|
else {
|
|
invalid++;
|
|
}
|
|
}
|
|
} /* while */
|
|
fclose(f);
|
|
if(invalid) {
|
|
fprintf(stderr, "%s: WARNING: %d %s is improperly formatted\n", hashsum, invalid, invalid > 1?"lines":"line");
|
|
}
|
|
if(failed) {
|
|
fprintf(stderr, "%s: WARNING: %d computed %s did NOT match\n", hashsum, failed, failed > 1?"checksums":"checksum");
|
|
}
|
|
argn++;
|
|
}
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int idxs[TAB_SIZE], idx, check, y, z, err, argn;
|
|
unsigned long w, x;
|
|
unsigned char hash_buffer[MAXBLOCKSIZE];
|
|
|
|
hashsum = strdup(basename(argv[0]));
|
|
atexit(cleanup);
|
|
|
|
/* You need to register algorithms before using them */
|
|
register_all_ciphers();
|
|
register_all_hashes();
|
|
if (argc > 1 && (strcmp("-h", argv[1]) == 0 || strcmp("--help", argv[1]) == 0)) {
|
|
die(EXIT_SUCCESS);
|
|
}
|
|
if (argc < 3) {
|
|
die(EXIT_FAILURE);
|
|
}
|
|
|
|
for (x = 0; x < sizeof(idxs)/sizeof(idxs[0]); ++x) {
|
|
idxs[x] = -2;
|
|
}
|
|
argn = 1;
|
|
check = 0;
|
|
idx = 0;
|
|
|
|
while(argn < argc){
|
|
if(strcmp("-a", argv[argn]) == 0) {
|
|
argn++;
|
|
if(argn < argc) {
|
|
idxs[idx] = find_hash(argv[argn]);
|
|
if (idxs[idx] == -1) {
|
|
struct {
|
|
const char* is;
|
|
const char* should;
|
|
} shasum_compat[] =
|
|
{
|
|
#ifdef LTC_SHA1
|
|
{ "1", sha1_desc.name },
|
|
#endif
|
|
#ifdef LTC_SHA224
|
|
{ "224", sha224_desc.name },
|
|
#endif
|
|
#ifdef LTC_SHA256
|
|
{ "256", sha256_desc.name },
|
|
#endif
|
|
#ifdef LTC_SHA384
|
|
{ "384", sha384_desc.name },
|
|
#endif
|
|
#ifdef LTC_SHA512
|
|
{ "512", sha512_desc.name },
|
|
#endif
|
|
#ifdef LTC_SHA512_224
|
|
{ "512224", sha512_224_desc.name },
|
|
#endif
|
|
#ifdef LTC_SHA512_256
|
|
{ "512256", sha512_256_desc.name },
|
|
#endif
|
|
{ NULL, NULL }
|
|
};
|
|
for (x = 0; shasum_compat[x].is != NULL; ++x) {
|
|
if(XSTRCMP(shasum_compat[x].is, argv[argn]) == 0) {
|
|
idxs[idx] = find_hash(shasum_compat[x].should);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (idxs[idx] == -1) {
|
|
fprintf(stderr, "%s: Unrecognized algorithm\n", hashsum);
|
|
die(EXIT_FAILURE);
|
|
}
|
|
idx++;
|
|
if ((size_t)idx >= sizeof(idxs)/sizeof(idxs[0])) {
|
|
fprintf(stderr, "%s: Too many '-a' options chosen\n", hashsum);
|
|
die(EXIT_FAILURE);
|
|
}
|
|
argn++;
|
|
continue;
|
|
}
|
|
else {
|
|
die(EXIT_FAILURE);
|
|
}
|
|
}
|
|
if(strcmp("-c", argv[argn]) == 0) {
|
|
check = 1;
|
|
argn++;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (check == 1) {
|
|
check_file(argn, argc, argv);
|
|
}
|
|
|
|
if (argc == argn) {
|
|
w = sizeof(hash_buffer);
|
|
if ((err = hash_filehandle(idxs[0], stdin, hash_buffer, &w)) != CRYPT_OK) {
|
|
fprintf(stderr, "%s: File hash error: %s\n", hashsum, error_to_string(err));
|
|
return EXIT_FAILURE;
|
|
} else {
|
|
for (x = 0; x < w; x++) {
|
|
printf("%02x",hash_buffer[x]);
|
|
}
|
|
printf(" *-\n");
|
|
}
|
|
} else {
|
|
for (z = argn; z < argc; z++) {
|
|
for (y = 0; y < idx; ++y) {
|
|
w = sizeof(hash_buffer);
|
|
if ((err = hash_file(idxs[y],argv[z],hash_buffer,&w)) != CRYPT_OK) {
|
|
fprintf(stderr, "%s: File hash error: %s\n", hashsum, error_to_string(err));
|
|
return EXIT_FAILURE;
|
|
} else {
|
|
printf_hex(hash_buffer, w);
|
|
printf(" *%s\n", argv[z]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
/* ref: $Format:%D$ */
|
|
/* git commit: $Format:%H$ */
|
|
/* commit time: $Format:%ai$ */
|