%A MA Weiju, FENG Dengguo %T Clock-controlled key-stream generator and its cryptographic properties %0 Journal Article %D 0 %J Front. Electr. Electron. Eng. %J Frontiers of Electrical and Electronic Engineering %@ 2095-2732 %R 10.1007/s11460-008-0014-6 %P 327-332 %V %N %U {https://journal.hep.com.cn/fee/EN/10.1007/s11460-008-0014-6 %8 2008-09-05 %X A new clock-controlled key-stream generator is proposed in this paper. The generator is composed of three shift registers: two clock-controlled linear feedback shift registers, A and B, and one clock-controlled nonlinear feedback shift register C. The clock-controlled information is from two bit strings of feedback shift register C. The times A and B shift are according to the Hamming weights of the two strings, respectively. The period, the linear complexity and the k error linear complexity of the key-stream generator are studied, and the security of it is analyzed.