#!/usr/bin/perl # # Test program for /dev/random # Read and display random numbers. # Try tapping shift/alt/ctrl to get more randomness. # # for (;;) { open(BIN, "/dev/random") || die "Cannot open /dev/random - $!\n"; $len = sysread(BIN, $a, 128); close(BIN); if ($len > 0) { print "$len bytes read: "; for ($j = 0; $j < $len; $j++) { $k = unpack("C", substr($a, $j, 1)); printf("%.2X ", $k); } printf "\n"; } }