基于流加密的CPU私化的研究  

Research of Privatization of CPU Based on Stream Cipher

作　　者：邓程方[1] 王铮[1] 

机构地区：[1]重庆大学计算机学院计算机软件与理论系,重庆400044

出　　处：《计算机技术与发展》2011年第5期134-138,共5页Computer Technology and Development

摘　　要：CPU是计算机的核心部分,它的主要功能就是解释并执行计算机指令以及处理计算机中的数据。运行在计算机中的所有应用程序都是由CPU可以处理的机器指令构成。为了提高计算机的安全性,提出了通过CPU的私化来阻止一些常见的攻击。CPU私化是通过加密指令和数据,使其对外部以密文存在,来达到私化的目的。处于安全性和效率的考虑,所有加密均采用流加密。此外,对数据的认证,保护程序完整性也是防止恶意篡改的有效手段。文中结合加密和认证的方式来实现CPU的私化,提高计算机的安全性。The central processing unit （CPU） is the core portion of a computer system that carries out the instructions of a computer program, and is the primary element carrying out the computer＇ s functions. All programs that is executed by computer consist of the machine code that can be recognized by CPU. In order to enhance the security of computer, proposes a method to deter some common attack through the privatization of CPU. The privatization of CPU is to cipher the instructioin and data, store only encypted data in external memory out of CPU. In consideration of security and performence, uses stream cipher for encryption. Moreover, also proposes the authentication of data to deter the malicious tamper of adversary, and provide the protection of integerity of programs. Make a research on the privatization of CPU through encyption and authention, and enhance the security of computer.

关 键 词：CPU 流加密 私化 MAC Hash认证 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]