key setup very expensive. ("Eks" stands for "expensive key
schedule".) This doesn't make it significantly cryptographically
stronger, but is intended to hinder brute-force attacks. It also
makes it unsuitable for any application requiring key agility. It was
designed by Niels Provos and David Mazieres for password hashing in
OpenBSD.
Eksblowfish is a parameterised (family-keyed) cipher. It takes a cost
parameter that controls how expensive the key scheduling is. It also
takes a family key, known as the "salt". Cost and salt parameters
together define a cipher family. Within each family, a key determines
an encryption function in the usual way.
This distribution also includes an implementation of "bcrypt", the
Unix crypt() password hashing algorithm based on Eksblowfish.
WWW: http://search.cpan.org/dist/Crypt-Eksblowfish/
Approved by: erwin (mentor)
