New Variant of the Self-Shrinking Generator and Its Cryptographic Properties
We propose a variant of the self-shrinking generator, which is constructed using an extended selection rule. This new generator is called SSG-XOR since the selection rule is determined by the XORed value of a couple of bits. It is shown that the period and the linear complexity of an output sequence of SSG-XOR are better than those of the self-shrinking generator. It is also shown that the SSG-XOR generator has meaningful advantages from the viewpoint of practical cryptanalysis.
KeywordsLinear Complexity Minimal Polynomial Stream Cipher Primitive Element Output Sequence
Unable to display preview. Download preview PDF.
- 2.Coppersmith, D., Krawczyk, H., Mansour, Y.: The Shrinking Generator. In: Stinson, D.R. (ed.) CRYPTO 1993. LNCS, vol. 773, pp. 22–39. Springer, Heidelberg (1994)Google Scholar
- 4.Golić, J.D.: Correlation Analysis of the Shrinking Generator. In: Kilian, J. (ed.) CRYPTO 2001. LNCS, vol. 2139, pp. 440–457. Springer, Heidelberg (2001)Google Scholar