wolfssl-examples/hash/Ascon-Hash256.c

149 lines
3.8 KiB
C

/* Ascon-Hash256.c
*
* Copyright (C) 2006-2026 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
#ifdef NO_INLINE
#include <wolfssl/wolfcrypt/misc.h>
#endif
#include <wolfssl/options.h>
#include <wolfssl/wolfcrypt/settings.h>
#include <wolfssl/wolfcrypt/ascon.h>
#define BLOCK_SIZE 4096
#ifdef HAVE_ASCON
void usage(void)
{
printf("./Ascon-Hash256 <file to hash>\n");
exit(-99);
}
#endif
void free_mem(wc_AsconHash256 *asconHash, byte *rawInput, FILE *inputStream) {
if (asconHash != NULL) {
wc_AsconHash256_Free(asconHash);
}
if (rawInput != NULL) {
free(rawInput);
}
if (inputStream != NULL) {
fclose(inputStream);
}
}
int main(int argc, char** argv)
{
int ret = 1;
#ifdef HAVE_ASCON
wc_AsconHash256* asconHash = NULL;
byte hash[ASCON_HASH256_SZ] = {0};
byte* rawInput = NULL;
FILE* inputStream = NULL;
char* fName = NULL;
long fileLength = 0;
int chunkRead = BLOCK_SIZE;
long i;
int j;
size_t read;
if (argc < 2)
usage();
fName = argv[1];
printf("Hash input file %s\n", fName);
inputStream = fopen(fName, "rb");
if (inputStream == NULL) {
printf("ERROR: Unable to open file\n");
goto cleanup;
}
/* find length of the file */
if (fseek(inputStream, 0, SEEK_END) != 0 ) {
printf("fseek failed\n");
goto cleanup;
}
fileLength = ftell(inputStream);
if (fileLength < 0) {
printf("ftell failed\n");
goto cleanup;
}
if (fseek(inputStream, 0, SEEK_SET) != 0) {
printf("fseek failed\n");
goto cleanup;
}
/* Create and initialize hash context */
asconHash = wc_AsconHash256_New();
if (asconHash == NULL) {
printf("ERROR: Unable to create the hash context\n");
goto cleanup;
}
rawInput = (byte*) malloc(BLOCK_SIZE);
if (rawInput == NULL) {
printf("ERROR: Unable to allocate space for raw input\n");
goto cleanup;
}
for (i = 0; i < fileLength; i += BLOCK_SIZE) {
if (chunkRead > fileLength - i)
chunkRead = fileLength - i;
/* Read blocks from input file into a byte array*/
read = fread(rawInput, 1, chunkRead, inputStream);
if (read != chunkRead) {
printf("ERROR: Failed to read the size of input file\n");
goto cleanup;
}
ret = wc_AsconHash256_Update(asconHash, rawInput, chunkRead);
if (ret != 0) {
printf("ERROR: Hash update failed\n");
ret = 1;
goto cleanup;
}
}
ret = wc_AsconHash256_Final(asconHash, hash);
if (ret != 0) {
printf("ERROR: Hash operation failed");
ret = 1;
goto cleanup;
}
printf("Hash result is: ");
for (j = 0; j < ASCON_HASH256_SZ; j++)
printf("%02x", hash[j]);
printf("\n");
cleanup:
free_mem(asconHash, rawInput, inputStream);
#else
printf("Please enable Ascon-Hash256 (--enable-ascon --enable-experimental) in wolfCrypt\n");
#endif
return ret;
}