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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)
19 lines
914 B
Plaintext
19 lines
914 B
Plaintext
Eksblowfish is a variant of the Blowfish cipher, modified to make the
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key setup very expensive. ("Eks" stands for "expensive key
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schedule".) This doesn't make it significantly cryptographically
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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
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|
Unix crypt() password hashing algorithm based on Eksblowfish.
|
|
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|
WWW: http://search.cpan.org/dist/Crypt-Eksblowfish/
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