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