数字证书技术在当前是一个热点问题也是安全方面的一个重要内容,本教程能帮助大家了解和实现数字证书的具体过程.-digital certificate technology is a current hot issue is the security an important element, the handbook can help you understand and digital certificates to the specific process.

网络安全英文入门教程，写的不错，通俗易懂专业。-English portal of network security handbook, written in good, accessible professional.

中国鹰派专用安全教程-China hawks dedicated security handbook