�PNG  IHDR��;���IDATx��ܻn�0���K�� �)(�pA��� ���7�LeG{�� �§㻢|��ذaÆ 6lذaÆ 6lذaÆ 6lom��$^�y���ذag�5bÆ 6lذaÆ 6lذa{���� 6lذaÆ �`����}H�Fkm�,�m����Ӫ���ô�ô!� �x�|'ܢ˟;�E:���9�&ᶒ�}�{�v]�n&�6� �h��_��t�ڠ͵-ҫ���Z;��Z$�.�P���k�ž)�!��o���>}l�eQfJ�T��u і���چ��\��X=8��Rن4`Vw�l�>����n�G�^��i�s��"ms�$�u��i��?w�bs[m�6�K4���O���.�4��%����/����b�C%��t ��M�ז� �-l�G6�mrz2���s�%�9��s@���-�k�9�=���)������k�B5����\��+͂�Zsٲ ��Rn��~G���R���C����� �wIcI��n7jJ���hۛNCS|���j0��8y�iHKֶۛ�k�Ɉ+;Sz������L/��F�*\��Ԕ�#"5��m�2��[S��������=�g��n�a�P�e�ғ�L�� lذaÆ 6l�^k��̱aÆ 6lذaÆ 6lذa;���� �_��ذaÆ 6lذaÆ 6lذaÆ ���R���IEND�B` package Digest::base; use strict; use vars qw($VERSION); $VERSION = "1.16"; # subclass is supposed to implement at least these sub new; sub clone; sub add; sub digest; sub reset { my $self = shift; $self->new(@_); # ugly } sub addfile { my ($self, $handle) = @_; my $n; my $buf = ""; while (($n = read($handle, $buf, 4*1024))) { $self->add($buf); } unless (defined $n) { require Carp; Carp::croak("Read failed: $!"); } $self; } sub add_bits { my $self = shift; my $bits; my $nbits; if (@_ == 1) { my $arg = shift; $bits = pack("B*", $arg); $nbits = length($arg); } else { ($bits, $nbits) = @_; } if (($nbits % 8) != 0) { require Carp; Carp::croak("Number of bits must be multiple of 8 for this algorithm"); } return $self->add(substr($bits, 0, $nbits/8)); } sub hexdigest { my $self = shift; return unpack("H*", $self->digest(@_)); } sub b64digest { my $self = shift; require MIME::Base64; my $b64 = MIME::Base64::encode($self->digest(@_), ""); $b64 =~ s/=+$//; return $b64; } 1; __END__ =head1 NAME Digest::base - Digest base class =head1 SYNOPSIS package Digest::Foo; use base 'Digest::base'; =head1 DESCRIPTION The C class provide implementations of the methods C and C in terms of C, and of the methods C and C in terms of C. Digest implementations might want to inherit from this class to get this implementations of the alternative I and I methods. A minimal subclass needs to implement the following methods by itself: new clone add digest The arguments and expected behaviour of these methods are described in L. =head1 SEE ALSO L