基于智能型加密锁的高强度软件加密模型

摘要

研究一种基于智能型加密锁的软件加密模型,该模型分为PC模块、加密锁模块和通信交互与加密处理模块.通过以下两点保证软件的安全性:第一,将软件核心算法的关键程序段运行于加密锁内部CPU、核心参数存入加密锁内部存储器并进行通信加密来实现软件程序的硬件化；第二,使用加密锁制造技术实现硬件不可复制性.基于对目前加密锁的运算、通信及加解密性能测试提出一种将核心算法分布到PC和加密锁的分配原则及方法,确保软件的性能不受影响,保证了该模型的实用性.实际应用证明,在保证安全性的同时,该模型可方便地进行软件推广和应用,对一般软件加密普遍适用.%The paper studies a software encryption model based on intelligent encryption lock. The model is composed of a PC module, an encryption lock module and a communication interactive and encryption processing module. The security of the software is guaranteed by the following two points: first, to run vital program segments of the software core algorithm within the internal CPU of the encryption lock, to store core parameters into the internal storage of the encryption lock and to execute communication encryption to realize the replacement of software with hardware; secondly, to realize hardware unduplicability with encryption lock manufacture technology. On the basis of testing on present encryption lock calculation, communication and encryption/decryption performance, an allocation principle and method to deliver the core algorithm to PC and encryption lock is proposed in order to ensure the performance of the software and the practicality of the model. Application proves that, while assuring its security, the model is easy to promote and apply since it is generally fit for ordinary software.