多项选择题测验中猜测因素影响程度的一种计量方法

在多项选择题测验的卷面分数等于真实分数和猜测分数之和的假设模型下，给出了计量猜测因素影响程度（简称猜测度）的一种统计方法．

口令猜测技术研究

口令猜测技术常被用于渗透测试、电子取证等领域,是提升系统安全性、电子取证能力的重要手段。为了推动口令猜测技术的发展与运用,采用了理论+实践的研究方法,系统性地研究了口令猜测相关技术和口令猜测工具链。从口令猜测工作实际需求出发,基于口令猜测工具链构建一站式分布式口令猜测系统。最后,以猜测Wi-Fi登录口令为例介绍了口令猜测过程,并证明分布式口令猜测系统易使用、性能强,可实现数百倍的性能提升。

A Note on a Misuirewicz's Theorem

In this paper,we improve a Misuirewicz's theorem and give a new proof of small conjecture on topological entropy.

Security Analysis and Improvement of Authentication Scheme Based on a One-way Hash Function and Diffie-Hellman Key Exchange Using Smart Card

A new authentication scheme based on a one-way hash function and Diffie-Hellman key exchange using smart card was propused by Yoon et al. in 2005. They claimed that the proposed protocol is against password guessing attack. In this paper, the author demonstrate that Yoon＇s scheme is vulnerable to the off-line password guessing attack by using a stolen smart card and the DoS attack by computational load at the re, note system. An improvement of Yoon＇s scheme to resist the above attacks is also proposed.