An Abstract Enciphering Machine Model

Toshihiko YAMAKAMI  Akihiro SHIMIZU  

IEICE TRANSACTIONS (1976-1990)   Vol.E73   No.7   pp.1051-1057
Publication Date: 1990/07/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: Special Section PAPER (Special Issue on Cryptography and Information Security)
Category: Common-Key Systems

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An abstract enciphering machine model (AEM model); an encipherment evaluation model considering the recent trends in computer architecture is proposed. With the advances in computer communication, network security is an important issue. Although there exist several encipherment method, there is no abstract measure for comparing encipherment algorithms. The authors implemented several encipherment algorithms is C and assembler with several programming techniques. Observing the improvements in various programming techniques, especially with RISC processors, it has lead us to believe that the amount of algorithm-specific improvement techniques is small. It is noted that there exists an abstract machine model which can predict encipherment algorithm performance without implementation. The authors discuss the parameter value in the AEM model for encipherment evaluation comparing the real observation with the predicted values. Also, the upperbound speed of ideal fast encipherment algorithms is discussed with the AEM model.