| Greg Hartman | 76d05dc | 2016-11-23 15:51:27 -0800 | [diff] [blame] | 1 | #!/usr/bin/perl |
| 2 | |
| 3 | use bytes; |
| 4 | use Crypt::PasswdMD5; |
| 5 | use MIME::Base64; |
| 6 | |
| 7 | sub random_bytes($) { |
| 8 | my($n) = @_; |
| 9 | my($v, $i); |
| 10 | |
| 11 | if ( open(RANDOM, '<', '/dev/random') || |
| 12 | open(RANDOM, '<', '/dev/urandom') ) { |
| 13 | read(RANDOM, $v, $n); |
| 14 | } else { |
| 15 | # No real RNG available... |
| 16 | srand($$ ^ time); |
| 17 | $v = ''; |
| 18 | for ( $i = 0 ; $i < $n ; $i++ ) { |
| 19 | $v .= ord(int(rand() * 256)); |
| 20 | } |
| 21 | } |
| 22 | |
| 23 | return $v; |
| 24 | } |
| 25 | |
| 26 | |
| 27 | ($pass, $salt) = @ARGV; |
| 28 | |
| 29 | unless (defined($salt)) { |
| 30 | $salt = MIME::Base64::encode(random_bytes(6), ''); |
| 31 | $salt =~ tr/\+/./; # . not + |
| 32 | } |
| 33 | |
| 34 | print unix_md5_crypt($pass, $salt), "\n"; |