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nvsign.c
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nvsign.c
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#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "nvaes.h"
int main(int argc, char **argv)
{
unsigned char iv[AES_BLOCK_SIZE] = {0};
unsigned char out[AES_BLOCK_SIZE] = {0};
int fi, i;
nvaes_ctx ctx;
if(argc < 2) {
printf("Usage: %s <file sign>\n", argv[0]);
exit(3);
}
if((fi = open(argv[1], O_RDONLY)) <= 0) {
fprintf(stderr, "Error opening input file: %s\n", argv[1]);
perror("Error");
exit(3);
}
if((ctx = nvaes_open()) < 0) {
perror("Error opening AES engine");
exit(3);
}
if(nvaes_use_ssk(ctx, 1) == 0) {
fprintf(stderr, "Error requesting the use of the SSK.\n");
exit(3);
}
if(nvaes_sign_fd(ctx, fi, out)) {
printf("Signature: ");
for(i = 0; i < sizeof(out); i++)
printf("%02x ", out[i]);
printf("\n");
} else {
fprintf(stderr, "Failed to sign file.\n");
exit(3);
}
nvaes_close(ctx);
close(fi);
return 0;
}