Structure of Simple Des

Simple Des is a block cipher which encrypts an 9 bit block of plaintext using a 10 bit key and outputs an 8 bit block of ciphertext.This Simple Des presents of structure of Simple Des; basic fuctions of Simple Des; crypanalysis of Simple Des and some things else.

51p bmayltt 08-05-2015 49 4   Download

In Memory of Dick and Brian Abstract A group is locally finite if every finite subset generates a finite subgroup. A group of linear transformations is finitary if each element minus the identity is an endomorphism of finite rank. The classification and structure theory for locally finite simple groups splits naturally into two cases—those groups that can be faithfully represented as groups of finitary linear transformations and those groups that are not finitary linear. This paper completes the finitary case.

55p noel_noel 17-01-2013 44 8   Download

We give infinite series of groups Γ and of compact complex surfaces of general type S with fundamental group Γ such that 1) Any surface S with the same Euler number as S, and fundamental group Γ, is diffeomorphic to S. 2) The moduli space of S consists of exactly two connected components, exchanged by complex conjugation. Whence, i) On the one hand we give simple counterexamples to the DEF = DIFF question whether deformation type and diffeomorphism type coincide for algebraic surfaces. ii) On the other hand we get examples of moduli spaces without real points. iii)...

17p tuanloccuoi 04-01-2013 57 6   Download