[Cryptography] Cisco FNR; block cipher without padding

[Paul Grubbs]

My work in industry heavily involves these types of format-preserving block
cipher constructions. [I work at Skyhigh Networks.] As such, I am fairly
well-acquainted with the work in the field. I was (and still am, to an
extent) very interested in FNR but I don't understand what differentiates
it from other more mature constructions based on the Luby-Rackoff result.
If more security is desired a practitioner can use one of any number of
recent works that use ideas from card shuffling algorithms (e.g. the Thorp
shuffle) to construct pseudorandom permutations over an arbitrary domain.


On Mon, Jun 23, 2014 at 1:10 AM, TJ <0.cryptography at iam.tj> wrote:

> Opinions on this: "Open Sourcing FNR an Experimental Block Cipher"[1] ?
>
> [1] http://blogs.cisco.com/security/open-sourcing-fnr-an-
> experimental-block-cipher/
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