A New Self-shrinking-controlled Generator

In this paper we present a new kind of key flow generator on the basis of self-shrinking generator and the clock-controlled generator:A new self-shrinking-controlled generator. We know that the self-shrinking generator produces a sequence of balanced properties, but the cycle is not big enough:and the clock-controlled generator produces a sequence of large cycle,but not balanced.So the new self-shrinking-controlled generator consists of two or one linear feedback shift register (LFSR) sequences of the GF (3): generated by the way of self-shrinking genarator mixed with the clock-controlled generator.It not only can cover their disadvantages.but also can keep their advantages:balanced sequences:large period;fine run-length distribution.By researching the run length of the self-shrinking sequence,we discusse the cycle,symbol distribution,balance and other cryptographic properties of the new self-shrinking-controlled sequence.and it can be used in the design of the stream ciphers.