On a clock-controlled keystream generator and its cryptographic properties

MA Wei-ju1; FENG Deng-guo1

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On a clock-controlled keystream generator and its cryptographic properties

更新时间：2024-10-14

- On a clock-controlled keystream generator and its cryptographic properties
- Issue 7, Pages: 42-47(2007)
- 作者机构：
  
  1. 中国科学院研究生院信息安全国家重点实验室
  2. 中国科学院研究生院信息安全国家重点实验室,北京,100049
  3. 中国科学院软件研究所
  4. ,北京,100080
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN918.2
- Published：2007
- 稿件说明：
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MA Wei-ju1, FENG Deng-guo1. On a clock-controlled keystream generator and its cryptographic properties[J]. 2007, (7): 42-47.
DOI：

MA Wei-ju1, FENG Deng-guo1. On a clock-controlled keystream generator and its cryptographic properties[J]. 2007, (7): 42-47. DOI：

摘要

提出了一种新的钟控密钥流生成器

由3个移位寄存器组成:两个被钟控的线性反馈移位寄存器A和B

一个提供钟控信息的非线性反馈移位寄存器C。设A、B和C的长度分别为l1、l2和l3。移位寄存器A和B的钟控信息由从移位寄存器C选取的两个比特串提供

移位的次数分别是两个比特串的汉明重量。研究了该生成器的周期、线性复杂度和k错线性复杂度

分析了这种密钥流生成器的安全性。

Abstract

A new clock-controlled keystream generator was proposed

which was composed of three shift registers: two clock-controlled linear feedback shift registers A

and one clock-controlling nonlinear feedback shift register C.Let l1

l2 and l3 denote the length of A

B and C

respectively.The clock-control information is from two bit strings of feedback shift register C

and 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 keystream generator are studied

and its security was analyzed.

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