密钥序列设计的迹函数方法

Stream Designs Based on Trace Functions

迹函数方法在纠错编码中虽然早已被广泛应用，但是它应用于序列密码设计之中则只是最近几年的事情，由于多方面的原因，迹函数突然以惊人的速度渗入了序列密码的多个领域，而且还有迅速扩展之趋势。正是在这种背景之下，本文系统地综合分析了最近几年国内外有代表性的成果，并提出了一些个人观点和看法。

Trace functions have been widely used in error correcting coding for many years,but only a few years ago the significance of trace functions in the design of stream ciphers had been recognized.For reasons, trace functions suddenly become well-known and more and more important in stream designs. Based on this situation, the paper reviews the developments and achievements in stream designs. Suggestions and view points of the author are presented too.