90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/* sha256-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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#include <wolfssl/options.h>
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#include <wolfssl/ssl.h>
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#include <wolfssl/wolfcrypt/hash.h>
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void usage(void)
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{
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printf("./run <file to hash>\n");
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exit(-99);
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}
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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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#ifndef NO_SHA256
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byte hash[WC_SHA256_DIGEST_SIZE];
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byte* rawInput;
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FILE* inputStream;
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char* fName = NULL;
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int numBytes = 0;
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int fileLength = 0;
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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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/* allocate buffer based on file size */
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rawInput = (byte*) XMALLOC(fileLength*sizeof(byte), NULL,
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DYNAMIC_TYPE_TMP_BUFFER);
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numBytes = fread(rawInput, 1, fileLength, inputStream);
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if (numBytes != fileLength) {
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printf("ERROR: Failed to read the entire file\n");
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fclose(inputStream);
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XFREE(rawInput, NULL, DYNAMIC_TYPE_TMP_BUFFER);
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return -2;
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}
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ret = wc_Sha256Hash(rawInput, numBytes, hash);
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if (ret != 0)
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printf("ERROR: Hash operation failed");
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else {
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int i;
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printf("Hash result is: ");
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for (i = 0; i < WC_SHA256_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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XFREE(rawInput, NULL, DYNAMIC_TYPE_TMP_BUFFER);
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#else
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printf("Please enabling sha256 and then try again\n");
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#endif
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return ret;
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}
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