基于AES的软件加密解密的设计与实现

随着计算机的普及以及重视知识产权保护,使得软件加密技术蓬勃兴起,AES算法正取代DES算法成为使用广泛的新标准。介绍了如何运用AES算法对文档进行加密和解密,并给出了一个基于Visual C++2010开发平台和AES算法的实例。     

A privacy preserving homomorphic computing toolkit for predictive computation

Predictive computation now is a more and more popular paradigm for artificial intelligence. In this article, we discuss how to design a privacy preserving computing toolkit for secure predictive computation in smart cities. Predictive computation technology is very important in the management of cloud data in smart cities, which can realize intelligent computing and efficient management of cloud data in the city. Concretely, we propose a homomorphic outsourcing computing toolkit to protect the privacy of multiple users for predictive computation. It can meet the needs of large-scale users to securely outsource their data to cloud servers for storage, management and processing of their own data. This toolkit, using the Paillier encryption system and Lagrangian interpolation law, can implement most commonly basic calculations such as addition, subtraction, multiplication and division etc. It can also implement secure comparison of user data in the encrypted domain. In addition, we discuss how to implement the derivative of polynomial functions using our homomorphic computing encryption tool. We also introduce its application in neural networks. Finally, we demonstrate the security and efficiency of all our protocols through rigorous mathematical analysis and performance analysis. The results show that our toolkit is efficient and secure.     

智能IC卡在电能计量系统中的应用探析

智能IC卡电能计量控制系统是一个集电能计量、用电控制、收费管理、配电保护等多功能于一体的控制系统,具有体积小,操作、安装方便,计量精度高的特点。拟详细介绍了作为传输载体的IC卡的特点、接口电路、AT24CI6基本操作,并实现了对IC的读写操作和加密保护。