Computer Science – Cryptography and Security
Scientific paper
2008-07-21
International Conference on Science and Technology (JICT), Malaga : Espagne (2007)
Computer Science
Cryptography and Security
Scientific paper
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.
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