md5.pm revision 1.12
1# ex:ts=8 sw=4: 2# $OpenBSD: md5.pm,v 1.12 2010/10/27 14:35:56 espie Exp $ 3# 4# Copyright (c) 2003-2007 Marc Espie <espie@openbsd.org> 5# 6# Permission to use, copy, modify, and distribute this software for any 7# purpose with or without fee is hereby granted, provided that the above 8# copyright notice and this permission notice appear in all copies. 9# 10# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 18use strict; 19use warnings; 20 21package OpenBSD::digest; 22 23sub new 24{ 25 my ($class, $filename) = @_; 26 $class = ref($class) || $class; 27 my $digest = $class->digest_file($filename); 28 bless \$digest, $class; 29} 30 31sub write 32{ 33 my ($self, $fh) = @_; 34 print $fh "\@", $self->keyword, " ", $self->stringize, "\n"; 35} 36 37sub digest_file 38{ 39 my ($self, $fname) = @_; 40 open(my $file, '<', $fname) or die "can't open $fname: $!"; 41 my $digest = $self->digest_fh($file); 42 close($file) or die "problem closing $fname: $!"; 43 return $digest; 44} 45 46 47sub digest_fh 48{ 49 my ($self, $file) = @_; 50 51 my $d = $self->algo; 52 53 $d->addfile($file); 54 return $d->digest; 55} 56 57sub fromstring 58{ 59 my ($class, $arg) = @_; 60 $class = ref($class) || $class; 61 my $d = $class->unstringize($arg); 62 bless \$d, $class; 63} 64 65sub equals 66{ 67 my ($a, $b) = @_; 68 return ref($a) eq ref($b) && $$a eq $$b; 69} 70 71package OpenBSD::md5; 72our @ISA=(qw(OpenBSD::digest)); 73 74sub fromfile 75{ 76 my $fname = shift; 77 return OpenBSD::md5->digest_file($fname); 78} 79 80sub fromfh 81{ 82 my $file = shift; 83 return OpenBSD::md5->digest_fh($file); 84} 85 86sub algo 87{ 88 my $self = shift; 89 require Digest::MD5; 90 91 return Digest::MD5->new; 92} 93 94sub stringize 95{ 96 my $self = shift; 97 return unpack('H*', $$self); 98} 99 100sub unstringize 101{ 102 my ($class, $arg) = @_; 103 return pack('H*', $arg); 104} 105 106sub keyword 107{ 108 return "md5"; 109} 110 111package OpenBSD::sha; 112our @ISA=(qw(OpenBSD::digest)); 113 114use Digest::SHA; 115use MIME::Base64; 116 117sub algo 118{ 119 my $self = shift; 120 121 return Digest::SHA->new(256); 122} 123 124sub stringize 125{ 126 my $self = shift; 127 128 return encode_base64($$self, ''); 129} 130 131sub unstringize 132{ 133 my ($class, $arg) = @_; 134 135 return decode_base64($arg); 136} 137 138sub keyword 139{ 140 return "sha"; 141} 142 1431; 144