| 一种新的密钥流发生器设计算法 |
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| 引用本文： | 李昌刚,张昕,朱芳来,应艳杰,汪永斌. 一种新的密钥流发生器设计算法[J]. 计算机工程, 2007, 33(10): 138-140 |
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| 作者姓名： | 李昌刚 张昕 朱芳来 应艳杰 汪永斌 |
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| 作者单位： | 浙江万里学院电信学院,宁波,315100;浙江万里学院基础学院,宁波,315100;桂林电子工业学院计算机系,桂林,541004 |
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| 摘 要： | 流密码的安全性主要取决于密钥流的随机程度，如何构造随机性良好的密钥序列成为流密码所要研究的首要问题。该文借鉴已有的一些分组密码，如DES﹑RC5等设计中的某些产生良好非线性的方法，提出了一种产生伪随机密钥的方法，并对它们的随机性进行了理论分析。分析结果表明，该算法具有良好的安全性。
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| 关 键 词： | 流密码 RC5算法 S盒 DES算法 分组密码 |
| 文章编号： | 1000-3428（2007）10-0138-03 |
| 修稿时间： | 2006-06-26 |
New Design Algorithm of Secret Key Stream Generator |
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| LI Changgang,ZHANG Xin,ZHU Fanglai,YING Yanjie,WANG Yongbin. New Design Algorithm of Secret Key Stream Generator[J]. Computer Engineering, 2007, 33(10): 138-140 |
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| Authors: | LI Changgang ZHANG Xin ZHU Fanglai YING Yanjie WANG Yongbin |
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| Affiliation: | 1. Faculty of Electronics and Information, Zhejiang Wanli College, Ningbo 315100; 2. Junior College, Zhejiang Wanli College, Ningbo 315100; 3. Department of Computer, Guilin Electronics and Industry College, Guilin 541004 |
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| Abstract: | The security of stream cipher is mainly dependent on the randomness degree of the secret key stream. How to design key stream with perfect randomness turns into the main problem. This paper considers some properties of block ciphers such as DES and RCS, in which there are some favorable nonlinear generating methods. It designs a new algorithm to generate a pseudo-random sequence. The randomness of the sequence is analyzed. The result indicates that the algorithm is safe. |
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| Keywords: | Stream cipher RC5 algorithm S-box DES algorithm Block cipher |
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