Add sha1sum program as a test/application of the SHA-1 computation.

This commit is contained in:
Stephen Heumann 2017-07-01 15:11:13 -05:00
parent 0ad5d39f07
commit b2d3d3ffa8

39
sha1sum.c Normal file
View File

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#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include "sha1.h"
unsigned char buf[0x8000];
int main(int argc, char **argv) {
struct sha1_context ctx;
FILE *file;
size_t count;
int i;
srand(time(NULL));
if (argc != 2)
return EXIT_FAILURE;
file = fopen(argv[1], "rb");
if (file == NULL)
return EXIT_FAILURE;
sha1_init(&ctx);
do {
count = (rand() & 0x7FFF) + 1;
count = fread(buf, 1, count, file);
sha1_update(&ctx, buf, count);
} while (count != 0);
fclose(file);
sha1_finalize(&ctx);
for (i = 0; i < 20; i++) {
printf("%02x", ctx.hash[i]);
}
printf("\n");
return 0;
}