密码学中伪随机数的产生问题

随着社会步入开放式的网络时代 ,对广泛应用于信息安全的密码学的研究越来越引起有关专业人士的兴趣。目前的加密体制仍以公钥体系为主流 ,且最常见的密钥选取方法就是选取一个具有某种特征的随机数 ,因此随机数的好坏就直接影响到密钥的安全 ,从而也就影响到整个加密体系的安全。本文阐述了一个好的伪随机数序列的条件 ,着重介绍了如何利用线性反馈移位寄存器产生m_序列的方法

On the Production of Pseudo-random Numbers in Cryptography

As we enter the open Internet age, people are becoming more and more interested in the study of widely_applied information security in cryptography. At present, the public key system is still the major one in the encryption system, and the commonest method in private key selection is to choose a random number with a certain feature, which will influence the security of the private key and the whole encryption system. The paper analyses the condition of the proper pseudo_random sequence, and introduces the way of using the Linear Feedback Shift Register to generate m_sequence.