Another Co*cryption Method

Bruno Martin (1)

1 Laboratoire d'Informatique, Signaux, et Systèmes de Sophia-Antipolis (I3S) / Equipe MC3

We consider the enciphering of a data stream while being compressed by a LZ algorithm. This has to be compared to the classical encryption after compression methods used in security protocols. Actually, most cryptanalysis techniques exploit patterns found in the plaintext to crack the cipher; compression techniques reduce these attacks. Our scheme is based on a LZ compression in which a Vernam cipher has been added. We make some security remarks by trying to measure its randomness with statistical tests. Such a scheme could be employed to increase the speed of security protocols and to decrease the computing power for mobile devices.

Mots clés: cellular automata; compression; vernam cipher

Domaines: Cryptographie et sécurité [cs.CR]; Autre [cs.OH]

Bruno Martin. Another Co*cryption Method. International Conference on Science and Technology (JICT), Mar 2007, Malaga, Spain. pp.CD-ROM. ⟨hal-00301817⟩