摘 要
随着信息技术的迅猛发展，计算机安全协议中的访问控制机制成为保障信息安全的关键环节。本研究聚焦于现代访问控制机制的设计与实现，旨在构建一个兼具灵活性和安全性的访问控制系统框架。通过对现有RBAC（基于角色的访问控制）、ABAC（基于属性的访问控制）等主流模型进行深入分析，提出了一种融合多因素认证的动态访问控制机制。该方法不仅继承了传统模型的优点，还创新性地引入了上下文感知和行为分析技术，实现了对用户身份、环境信息及操作意图的实时评估。实验结果表明，所提出的机制在保证系统安全性的同时，显著提高了访问决策效率，降低了误判率。特别是在复杂网络环境下，其响应速度和准确性均优于现有方案。本研究的主要贡献在于突破了静态规则限制，建立了自适应调整的安全策略体系，为解决当前访问控制面临的挑战提供了新的思路和技术支持，对于提升网络安全防护水平具有重要理论意义和应用价值。
关键词：访问控制机制；多因素认证；动态访问控制
Abstract
With the rapid development of information technology, access control mechanisms in computer security protocols have become a critical component for ensuring information security. This study focuses on the design and implementation of modern access control mechanisms, aiming to construct a flexible and secure access control system fr amework. By conducting an in-depth analysis of existing mainstream models such as Role-Based Access Control (RBAC) and Attribute-Based Access Control (ABAC), this research proposes a dynamic access control mechanism integrated with multi-factor authentication. This approach not only inherits the advantages of traditional models but also innovatively incorporates context-awareness and behavioral analysis technologies, achieving real-time evaluation of user identity, environmental information, and operational intent. Experimental results demonstrate that the proposed mechanism significantly enhances access decision efficiency and reduces misjudgment rates while maintaining system security. Particularly in complex network environments, its response speed and accuracy surpass existing solutions. The primary contribution of this research lies in breaking through the limitations of static rules and establishing an adaptive security policy system, providing new insights and technical support for addressing current challenges in access control, which holds significant theoretical implications and practical value for improving the level of network security protection.
Keywords：Access Control Mechanism; Multi-Factor Authentication; Dynamic Access Control
目 录
摘要 I
Abstract II
一、绪论 1
(一) 计算机安全协议访问控制背景 1
(二) 研究现状综述 1
(三) 本文研究方法 2
二、访问控制模型分析 2
(一) 基于角色的访问控制 2
(二) 强制访问控制机制 2
(三) 自主访问控制特点 3
三、安全协议中的访问控制实现 4
(一) 密钥管理机制 4
(二) 身份认证技术 4
(三) 授权策略实施 5
四、访问控制机制的安全性评估 6
(一) 漏洞分析方法 6
(二) 攻击检测手段 7
(三) 安全性能优化 7
结 论 9
参考文献 10
