libcrypt-eksblowfish-perl - 0.009-3+b1 main

Crypt::Eksblowfish provides an implementation of the Eksblowfish encryption.
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Eksblowfish is a variant of the Blowfish cipher, modified to make the
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.
See Crypt::Eksblowfish::Bcrypt for the hash algorithm.
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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. See Crypt::Eksblowfish::Family
for a way to encapsulate an Eksblowfish cipher family.