Title :
Dynamic generation of s-boxes in block cipher systems
Author :
El-Ramly, S.H. ; EL-Garf, Talaat ; Soliman, A.H.
Author_Institution :
Fac. of Eng., Ain Shams Univ., Cairo, Egypt
Abstract :
Block cipher systems are widely used in cryptographic applications. The main problem in implementing any block cipher system is the fixed structure of s-boxes elements. In this paper we present a new method to build up dynamic look-up tables (s-boxes) changing with every change of the secret key in addition to an evaluation criterion of block ciphers. This new approach leads to more secure block cipher systems and consequently solves the problem of the fixed structure block ciphers
Keywords :
cryptography; table lookup; block cipher systems; cryptographic applications; dynamic look-up tables; s-boxes; secret key cryptography; substitution boxes; Autocorrelation; Computational complexity; Control systems; Frequency; National security; Statistical analysis; Statistical distributions; System testing; Time measurement;
Conference_Titel :
Radio Science Conference, 2001. NRSC 2001. Proceedings of the Eighteenth National
Conference_Location :
Mansoura
Print_ISBN :
977-5031-68-0
DOI :
10.1109/NRSC.2001.929396
