File: subkey.t

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libcrypt-eksblowfish-perl 0.009-3
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use warnings;
use strict;

use Test::More tests => 42 + 6*10;

BEGIN { use_ok "Crypt::Eksblowfish::Subkeyed"; }

is(Crypt::Eksblowfish::Subkeyed->blocksize, 8);

my $init = Crypt::Eksblowfish::Subkeyed->new_initial;
ok $init;
is ref($init), "Crypt::Eksblowfish::Subkeyed";
is $init->blocksize, 8;

my $pa = $init->p_array;
is ref($pa), "ARRAY";
is scalar(@$pa), 18;
is $pa->[0], 0x243f6a88;
is $pa->[17], 0x8979fb1b;

my $sb = $init->s_boxes;
is ref($sb), "ARRAY";
is scalar(@$sb), 4;
for(my $i = 4; $i--; ) {
	is ref($sb->[$i]), "ARRAY";
	is scalar(@{$sb->[$i]}), 256;
}
is $sb->[0]->[0], 0xd1310ba6;
is $sb->[3]->[255], 0x3ac372e6;

ok !$init->is_weak;

eval { Crypt::Eksblowfish::Subkeyed->new_from_subkeys(3, $sb); };
isnt $@, "";
eval { Crypt::Eksblowfish::Subkeyed->new_from_subkeys([], $sb); };
isnt $@, "";
eval { Crypt::Eksblowfish::Subkeyed->new_from_subkeys($pa, []); };
isnt $@, "";
eval {
	Crypt::Eksblowfish::Subkeyed->new_from_subkeys($pa, [@{$sb}[0..2],3]);
};
isnt $@, "";
eval {
	Crypt::Eksblowfish::Subkeyed->new_from_subkeys($pa, [@{$sb}[0..2],[]]);
};
isnt $@, "";

my $cinit = Crypt::Eksblowfish::Subkeyed->new_from_subkeys($pa, $sb);
ok $cinit;
is ref($cinit), "Crypt::Eksblowfish::Subkeyed";
is $cinit->blocksize, 8;
is_deeply $cinit->p_array, $pa;
is_deeply $cinit->s_boxes, $sb;
ok !$cinit->is_weak;

$pa = [ reverse(@$pa) ];
$sb = [ map { [ reverse(@$_) ] } @$sb ];
my $tcipher = Crypt::Eksblowfish::Subkeyed->new_from_subkeys($pa, $sb);
ok $tcipher;
is ref($tcipher), "Crypt::Eksblowfish::Subkeyed";
is $tcipher->blocksize, 8;
is_deeply $tcipher->p_array, $pa;
is_deeply $tcipher->s_boxes, $sb;
ok !$tcipher->is_weak;

ok !Crypt::Eksblowfish::Subkeyed->new_from_subkeys([ @{$pa}[0..5,9,7..17] ],
	$sb)->is_weak;
ok !Crypt::Eksblowfish::Subkeyed->new_from_subkeys($pa,
	[ @{$sb}[0,0,0,0] ])->is_weak;
ok !!Crypt::Eksblowfish::Subkeyed->new_from_subkeys($pa,
	[ $sb->[0], [ @{$sb->[1]}[0..5,9,7..255] ], @{$sb}[1,2] ])->is_weak;

while(<DATA>) {
	my($pt, $ict, $tct) = map { pack("H*", $_) } split;
	is $init->encrypt($pt), $ict;
	is $init->decrypt($ict), $pt;
	is $cinit->encrypt($pt), $ict;
	is $cinit->decrypt($ict), $pt;
	is $tcipher->encrypt($pt), $tct;
	is $tcipher->decrypt($tct), $pt;
}

1;

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