HIDS入侵检测系统 OSSEC源代码，跨平台，支持防火墙联动，文件完整性检测，rootkit检测-OSSEC is a scalable, multi-platform, open source Host-based Intrusion Detection System (HIDS). It has a powerful correlation and analysis engine, integrating log analysis, file integrity checking, Win

Symmetric Key Cryptography-use of Microsoft s CryptoAPI to implement challenge response for Entity Authentication via Symmetric Key Cryptography

简单的入侵检测系统实现，包括了从搜集日志，分析器，响应器等功能，检测方式为误差检测方式。-Simple intrusion detection system, including from collecting log analyzer response functions, detection methods for error detection.