mirror of
https://github.com/Llewellynvdm/Tomb.git
synced 2024-11-29 08:14:08 +00:00
40 lines
727 B
C
40 lines
727 B
C
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
void print_hex(unsigned char *buf, int len)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for(i=0;i<len;i++){
|
||
|
|
printf("%02x", buf[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, char **argv) {
|
||
|
|
int len=32;
|
||
|
|
int res;
|
||
|
|
unsigned char *buf;
|
||
|
|
FILE *rand;
|
||
|
|
if(argc>=2) {
|
||
|
|
if(sscanf(argv[1], "%d", &len) != 1) {
|
||
|
|
fprintf(stderr, "Error: len must be an integer\n");
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
buf = calloc(len, sizeof(char));
|
||
|
|
memset(buf, 9, len);
|
||
|
|
rand = fopen("/dev/random", "r");
|
||
|
|
res = fread(buf, sizeof(char), len, rand);
|
||
|
|
if( res != len) {
|
||
|
|
fprintf(stderr, "Error reading /dev/random: %d != %d, \n", res, len);
|
||
|
|
fclose(rand);
|
||
|
|
free(buf);
|
||
|
|
return 2;
|
||
|
|
}
|
||
|
|
fclose(rand);
|
||
|
|
print_hex(buf, len);
|
||
|
|
free(buf);
|
||
|
|
return 0;
|
||
|
|
}
|