基于FPGA的Rijndael-Ecc加密系统的实现

针对目前物联网易被攻击的特点,提出一种基于FPGA的Rijndael-ECC混合加密系统。方案采用Rijndael模块对数据进行加密,用散列函数加密算法处理数据得到数据摘要,用ECC加密算法实现对摘要的签名和私钥的加密,各模块采用并行执行的处理方式。同时利用流水线思想对Rijndael的轮单元结构进行了改进,提高了整个加密系统的工作效率,完全满足了物联网对于稳定性、功耗以及处理速度的要求,给数据传输的安全性提供了高强度的保障。     

基于AES和ECC的混合加密系统的设计与实现

基于AES的加密算法具有速度快、强度高、便于实现等优点和ECC加密算法具有密钥分配与管理简单、安全强度高等优点,采用AES加密算法加密大数据块,而用ECC加密算法管理AES密钥,通过集成AES加密算法和ECC加密算法的优点,实现了加密速度快和安全方便管理密钥的优点,有效地解决了密码体制中速度和安全性不能兼顾的问题。     

面向无线传感器网络的ECC身份认证的设计

无线传感器网络的数据传输存在着诸多安全威胁。为了满足无线传感器网络对于信息源身份认证的需求,在TelosB平台上外接Cyclone II-EP2C5T144最小系统板,设计并实现了基于ECC加密算法的身份认证系统。对ECC模块的底层运算单元采用并行处理的方法进行了优化设计。实验结果表明,优化设计后的认证速度相比传统设计方法提高了近一倍。     

AES与ECC混合加密算法的无线数据通信系统设计

提出了一种新的无线数据通信数据加密算法。该算法利用高级加密标准AES加密数据，以ECC加密AES算法的密钥，并用ECC实现数字签名，无线数据系统的接收端对接收的信息进行相应的数据解密，得到原始数据。这样既能快速地进行数据加解密，又能很好地解决密钥分配问题，同时也能完成数字签名与验证功能，具有需求存储空间小、运算速度快、带宽需求低、密钥管理方便等优点，非常适合于无线通信网络环境下的数据加解密通信。     

AES加密算法在远程控制系统中的应用

在远程控制系统中,大量的数据以明文形式传输。为了解决远程控制系统中的数据安全问题,需要对数据进行加密之后再传输。分析了数据加密的方式和加密粒度,选择了高安全性能的AES算法作为加密算法。讨论了AES加密算法的结构和几种变换的过程,并根据实际应用设计了加密/解密模块的软件和硬件实现。采用C++语言实现可传输加密数据的上位机客户端和远程服务器,通过以太网和远程服务器控制单片机,单片机接收指令并通过硬件解密指令执行指令。实验结果表明,此实现方法较好地消除了安全隐患,同时又易于实现,为AES算法在嵌入式中的应用提供参考。     

应用于无线网络安全的CCMP和WAPI硬件双横设计

介绍了无线局域网中两种加密标准802．11i和WAPI,对其中的数据加密和数据完整性算法进行了详细的分析。802．11i采用AES加密算法实现数据加密和数据完整性校验,WAPI采用SMS4加密算法实现数据加密和数据完整性校验。结合二者的共同点,对AES和SMS4外围电路进行了复用,同时,在实现数据加密和数据完整性校验时,分别对AES和SMS4进行了分时串行复用。本设计采用了一个AES加密核,一个SMS4加密核,实现了802．11i和WAPI的数据加密和完整性校验,减小了电路规模,同时也降低了吞吐率,但该吞吐率完全满足低成本的I腿E802．1labg应用场景。     

基于低成本FPGA的AES密码算法设计

主要介绍在逻辑资源少的现场可编程门阵列（FPGA）上实现高级数据加密标准（AES）算法设计。首先描述了AES加密算法,并在FPGA上优化实现AES算法,设计结构采用多轮加密共用一个轮运算的顺序结构,加密和解密模块共用密钥扩展模块,减少资源占用,在低时钟频率下保持较高的性能。采用了16位的并行总线通信接口,利用先进先出缓冲器（FIFO）对输入输出数据进行缓存。最后通过仿真和实测表明,在50MHz时钟下加解密速率可达530Mb/s。     

基于AES&RSA混合加密策略的硬盘分区加密技术

针对当前硬盘分区加密策略加密速度慢、安全性低,以及只对数据加密无法实现对应用软件加密的问题,设计了AES(高级加密标准)和RSA(公钥加密算法)混合加密策略,将AES的安全高速与RSA的安全密钥分发体制相结合实现一种新的硬盘分区加密技术.采用驱动层加密技术提升加密速度并实现操作对用户透明,设计简易数字证书和密钥生成模块将用户与密钥一一对应,增强系统安全性.     

AES加密算法在AP中的设计和实现

随着无线局域网(WLAN)的发展,其信息的安全也越来越受重视.AES作为无线局域网通信协议的核心加密算法,如何用硬件实现并应用在通信产品中尤为重要.文中在概述了AES(高级加密标准)算法基本原理的基础上,以FPGA为硬件平台,Altera公司的Quartus Ⅱ为工具,设计了AES加密算法在Ap(Access Point)中的硬件实现.实现了AES加密解密电路的顺序循环方式和两级流水线方式设计,并对这两种实现方式进行了比较.结果表明采用流水线方式设计虽然增加了资源消耗,但是明显的提高了速度.     

AES加密算法在防空系统中的应用

在防空系统中，大量数据以明文形式存储于数据库和文件中。为了保障重要数据的安全性，需要对这些数据进行加密后再存储。讨论了数据库加密的方式和加密粒度，选择了高安全性能的AES算法作为加密算法。对AES算法的基本原理进行了介绍，并根据实际应用设计了加密／解密模块处理方法和流程。采用C＋＋语言实现了AES算法的动态链接库，应用到防空系统的数据库加密和配置文件加密中。实现结果表明，该方法具有较高的安全性能，同时又易于实现，具有良好的推广价值。     

一种新型的WSN量子加密系统

目前无线传感器网络越来越普及,在不久的将来无线传感器网络的服务将会遍布全球。由于无线传感器网络在用户数据方面并没有IPSec的安全策略,因此具有一定程度的安全风险。我们在此设计了一种量子加密机制。这种应用于无线传感器网络的加密机制试图不仅使用类似于IPSec的策略,而且使用新型的量子加密技术。这种系统将有助于改善无线传感器网络的安全性。     

Multimedia Encryption with Multiple Modes Product Cipher for Mobile Devices

The most straight forward method in multimedia encryption is to encrypt the entire stream using standard encryption methods, such as the data encryption standard (DES) or advanced encryption standard (AES). However, in the block ciphering, there exists an attack risk with the weakness of plaintext-ciphertext pairs (i.e. the plaintext-ciphertext pair problem). Therefore, several modes of operation are proposed to solve the above problem. As we all know, channel hopping can defend illegal listening. Thus, this paper has proposed a multimedia encryption scheme with the multiple modes product cipher (MMPC) for mobile devices. In practice, MMPC can increase the security level in wireless multimedia networks. The results of Android applications (Apps) system have shown that the overhead of MMPC is decreased by 2% in throughputs, if it is compared with that of the other straightforward mode ciphers.     

3G视频会议系统中的ECC快速算法研究

3G视频会议系统由于受到无线网络开放性的限制,难以满足行业客户的特殊安全需求。现有3G视频会议系统的加密存在着诸多技术困难,其一就是常规加密算法对硬件要求高,时延较大。ECC加密算法可以较好地适应3G视频终端设备的要求,是一种可行的加密算法。针对此应用对ECC算法做进一步的优化能更好地适应3G视频会议系统终端的需求。文章提出了一种基于ECC的快速算法,经证明可以有效降低资源需求,提高速度,达到应用要求。     

一种新型无线传感器网络安全研究

物联网作为网络延伸的新拓展,广泛应用于社会各领域。无线传感器网络作为物联网的重要组成部分,基于无线传感器网络安全研究已成为目前物联网安全研究的重点。针对无线传感器网络计算能力较小、难以完成复杂计算的问题,设计了一种无线传感器网络安全架构方案。方案将无线传感器网络划分为若干个以中心节点作为信息传输端的节点网络,中心节点传递该节点网络搜集的信息到数据中心进行处理。采用可搜索加密技术,使得管理员可以直接获取所需信息对应的密文,而不用对整体密文解密后再搜集,提高了无线传感器网络的效率。     

A new methodology to implement the AES algorithm using partial and dynamic reconfiguration

Wireless networks are very widespread nowadays, so secure and fast cryptographic algorithms are needed. The most widely used security technology in wireless computer networks is WPA2, which employs the AES algorithm, a powerful and robust cryptographic algorithm. In order not to degrade the Quality of Service (QoS) of these networks, the encryption speed is very important, for which reason we have implemented the AES algorithm in an FPGA, taking advantage of the hardware characteristics and the software-like flexibility of these devices. In this paper, we propose our own methodology for doing an FPGA-based AES implementation. This methodology combines the use of three hardware languages (Handel-C, VHDL and JBits) with partial and dynamic reconfiguration, and a pipelined and parallel implementation. The same design methodology could be extended to other cryptographic algorithms. Thanks to all these improvements our pipelined and parallel implementation reaches a very high throughput (24.922 Gb/s) and the best efficiency (throughput/area ratio) of all the related works found in the literature (6.97 Mb/s per slice).     

Cooperative communications with multilevel/AES-SD4-CPFSK in wireless sensor networks

In this paper, a new joint multilevel data encryption and channel coding mechanism is proposed, which is called ??multilevel/advanced encryption standard?Csystematic distance 4?Ccontinuous phase frequency shift keying?? (ML/AES-SD4-CPFSK). In the proposed scheme, we have not only taken advantage of spatial diversity gains but also optimally allocated energy and bandwidth resources among sensor nodes as well as providing high level of security and error protection for cooperative communications in wireless sensor networks. Relay protocols of cooperative communications, such as amplify-and-forward and decode-and-forward with/without adversary nodes, have been studied for 4CPFSK, 8CPFSK, and 16CPFSK of ML/AES-SD4-CPFSK. We have evaluated the error performances of multilevel AES for data encryption, multilevel SD-4 for channel coding, and various CPFSK types for modulation utilizing cooperative communications in wireless sensor networks. According to computer simulation results, significant diversity gain and coding gain have been achieved. As an example, bit error rate (BER) performance of 10^?5 value has been obtained at a signal-to-noise ratio (SNR) of ?6?dB for SD-4-CPFSK scheme in a compared related journal paper, whereas in our proposed system, we have reached the same BER value at a SNR of ?23?dB with amplify-and-forward with direct path signal protocol in 16-level AES, two-level SD-4 coded 16CPFSK, and at the same time, we have reached the same BER value at a SNR of ?22?dB with amplify-and-forward without direct path signal protocol in 16-level AES, two-level SD-4 coded 16CPFSK.     

Joint data aggregation and encryption using Slepian‐Wolf coding for clustered wireless sensor networks

This paper proposes a joint data aggregation and encryption scheme using Slepian‐Wolf coding for efficient and secured data transmission in clustered wireless sensor networks (WSNs). We first consider the optimal intra‐cluster rate allocation problem in using Slepian‐Wolf coding for data aggregation, which aims at finding a rate allocation subject to Slepian‐Wolf theorem such that the total energy consumed by all sensor nodes in a cluster for sending encoded data is minimized. Based on the properties of Slepian‐Wolf coding with optimal intra‐cluster rate allocation, a novel encryption mechanism, called spatially selective encryption, is then proposed for data encryption within a single cluster. This encryption mechanism only requires a cluster head to encrypt its data while allowing all its cluster members to send their data without performing any encryption. In this way, the data from all cluster members can be protected as long as the data of the cluster head (called virtual key) is protected. This can significantly reduce the energy consumption for performing data encryption. Furthermore, an energy‐efficient key establishment protocol is also proposed to securely and efficiently establish the key used for encrypting the data of a cluster head. Simulation results show that the joint data aggregation and encryption scheme can significantly improve energy efficiency in data transmission while providing a high level of data security. Copyright © 2009 John Wiley & Sons, Ltd.