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#include <stdio.h> // printf()
#include <string.h> // strlen()
#include "sha2.h"
static void print_hash(const uint8_t * const hash) {
for (size_t i = 0; i < SHA256_HASH_SIZE; i++) {
printf("%02x", hash[i]);
}
}
static void print_row(
const char * const src,
const uint8_t * const hash
) {
printf("\"%s\",", src);
print_hash(hash);
printf("\n");
}
static uint8_t dst[SHA256_HASH_SIZE];
static uint8_t buf[1 << 21];
int main(int argc, char *argv[]) {
// if command-line parameters are given, then treat them as a
// list of files: open each file, hash it, and and print the
// result instead of running the test vectors
for (int i = 1; i < argc; i++) {
sha256_t ctx;
sha256_init(&ctx);
FILE *fh = fopen(argv[i], "rb");
if (!fh) {
fprintf(stderr, "fopen(\"%s\") failed", argv[i]);
return 1;
}
size_t len = 0;
while ((len = fread(buf, 1, sizeof(buf), fh)) > 0) {
sha256_push(&ctx, buf, len);
}
fclose(fh);
sha256_fini(&ctx, dst);
print_row(argv[i], dst);
}
return 0;
}
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