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lib/Crypt/Eksblowfish/Subkeyed.pm  view on Meta::CPAN

Creates a new Blowfish cipher object encapsulating the supplied subkeys.
ROUND_KEYS must be a reference to an array of 18 32-bit integers.
SBOXES must be a reference to an array of four references to 256-element
arrays of 32-bit integers.  These subkeys are used in the standard order
for Blowfish.

=item Crypt::Eksblowfish::Subkeyed->new_initial

The standard Blowfish key schedule is an iterative process, which uses
the cipher algorithm to progressively replace subkeys, thus mutating the
cipher for subsequent iterations of keying.  The Eksblowfish key schedule
works similarly, but with a lot more iterations.  In both cases, the
key setup algorithm begins with a standard set of subkeys, consisting
of the initial bits of the fractional part of pi.  This constructor
creates and returns a Blowfish block cipher object with that standard
initial set of subkeys.  This is probably useful only to designers of
novel key schedules.

=back

=head1 METHODS