117 lines
3.0 KiB
C
117 lines
3.0 KiB
C
/* sha3-256-hash.c
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*
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* Copyright (C) 2006-2020 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#ifndef WOLFSSL_USER_SETTINGS
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#include <wolfssl/options.h>
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#endif
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#include <wolfssl/wolfcrypt/settings.h>
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#include <wolfssl/ssl.h>
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#include <wolfssl/wolfcrypt/sha3.h>
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#include <wolfssl/wolfcrypt/error-crypt.h>
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#ifndef CHUNK_SIZE
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#define CHUNK_SIZE 1024
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#endif
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#ifdef WOLFSSL_SHA3
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void usage(void)
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{
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printf("./sha3-256-hash <file to hash>\n");
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exit(-99);
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}
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#endif
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int main(int argc, char** argv)
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{
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int ret = -1;
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#ifdef WOLFSSL_SHA3
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wc_Sha3 sha3;
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byte hash[WC_SHA3_256_DIGEST_SIZE];
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byte rawInput[CHUNK_SIZE];
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FILE* inputStream;
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char* fName = NULL;
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int fileLength = 0;
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int i, chunkSz;
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if (argc < 2)
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usage();
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fName = argv[1];
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printf("Hash input file %s\n", fName);
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inputStream = fopen(fName, "rb");
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if (inputStream == NULL) {
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printf("ERROR: Unable to open file\n");
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return -1;
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}
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/* find length of the file */
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fseek(inputStream, 0, SEEK_END);
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fileLength = (int) ftell(inputStream);
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fseek(inputStream, 0, SEEK_SET);
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ret = wc_InitSha3_256(&sha3, NULL , INVALID_DEVID);
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if (ret != 0) {
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printf("Failed to initialize sha structure\n");
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fclose(inputStream);
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}
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/* Loop reading a block at a time, finishing with any excess */
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for (i = 0; i < fileLength; i += CHUNK_SIZE) {
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chunkSz = CHUNK_SIZE;
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if (chunkSz > fileLength - i)
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chunkSz = fileLength - i;
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ret = fread(rawInput, 1, chunkSz, inputStream);
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if (ret != chunkSz) {
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printf("ERROR: Failed to read the appropriate amount\n");
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ret = -1;
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break;
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}
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ret = wc_Sha3_256_Update(&sha3, rawInput, chunkSz);
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if (ret != 0) {
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printf("Failed to update the hash\n");
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break;
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}
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}
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if (ret == 0) {
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ret = wc_Sha3_256_Final(&sha3, hash);
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}
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if (ret != 0) {
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printf("ERROR: Hash operation failed");
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}
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else {
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printf("Hash result is: ");
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for (i = 0; i < WC_SHA3_256_DIGEST_SIZE; i++)
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printf("%02x", hash[i]);
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printf("\n");
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}
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fclose(inputStream);
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wc_Sha3_256_Free(&sha3);
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#else
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printf("Please enable sha3 (--enable-sha3) in wolfCrypt\n");
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#endif
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return ret;
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}
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