Combining Linear Feedback Shift Registers
Nicolae Constantinescu · 2009
Abstract. In cryptography, LFSRs are often used mainly because they are extremely fast and easy to implement. LFSRs do not offer a high security, but there are some generators that use a combination of several LFSRs outputs in order to obtain a more secure keystream[6]. In this paper is presented such a generator which is based on the complexity of the LFSRs used. This generator can be used with a cipher system which has a simetric key encryption. The security of such a cipher will be much higher[8].