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README.md  view on Meta::CPAN

## compress\_map (grid MAP\_DATA)

Given the 2D grid `MAP_DATA`, the map is compressed and returned in raw binary.

## decode\_password (bin RAW\_BINARY)

Given the encoded level password in raw binary (4 bytes followed by a null byte),
this function returns the 4 ASCII byte password in clear text. This is the password
you'd type into Chip's Challenge.

Passwords are decoded by XORing the values in the raw binary by hex `0x99`,
if you're curious.

## encode\_password (string PASSWORD)

Given the plain text password `PASSWORD`, it encodes it and returns it as
a 5 byte binary string (including the trailing null byte).

## random\_password

Returns a random 4-letter password.

lib/Data/ChipsChallenge.pm  view on Meta::CPAN

	my $bin = join("",@compressed);
	return $bin;
}

=head2 decode_password (bin RAW_BINARY)

Given the encoded level password in raw binary (4 bytes followed by a null byte),
this function returns the 4 ASCII byte password in clear text. This is the password
you'd type into Chip's Challenge.

Passwords are decoded by XORing the values in the raw binary by hex C<0x99>,
if you're curious.

=cut

sub decode_password {
	my ($self,$data) = @_;

	my @chars = split(//, $data, 5);

	# Decode each character.