[cryptography] Minimally Sufficient Cryptosystem

Alexander Klimov alserkli at inbox.ru
Tue Jul 5 13:23:42 EDT 2011


On Tue, 5 Jul 2011, Scott Guthery wrote:
> the following cryptosystem was minimally sufficient:
>
> XOR Key / Permutation / XOR Key

"A Construction of a Cipher From a Single Pseudorandom Permutation"
<http://citeseer.ist.psu.edu/viewdoc/summary?doi=10.1.1.53.9789>

One can see it as a hint that building a keyless pseudorandom
permutation is not simpler than encryption.

-- 
Regards,
ASK



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