摘要： 为满足基于PDA的移动电子商务等应用的需求，针对现有高质量密钥生成方法的速度慢、效率低的问题，提出了一种高效随机密钥生成方法，设计了一个基于PDA的高效密钥生成系统。按照FIPS 140-2标准中的规定对由该系统产生的随机密钥的质量进行了测试和分析。说明该系统能快速产生具有高质量的、满足信息安全系统标准的高强度安全密钥，特别适用于基于PDA的移动电子商务、电子政务等环境，具有很好的实用价值。

关键词: 定点设备, 密钥, 信号源, 真随机密钥

Abstract: To solve the problem the known high quality key generate scheme is slow and inefficient, this paper builds an embedded truly random key generating system on the PDA devices based on a new method which is called as Xiao’s random key generating scheme. It analyzes the performance, efficiency, security about the proposed schemes and tests the generated sequence according to the standard of FIPS 140-2. The new system can get a batch of high-quality key meeting the requirements for information security system. It is quick, secure and efficient.

Key words: Point devices, Key, Signal source, Truly random key

中图分类号: 

• TP393.08