随着我国农业信息化的高速发展,越来越多的传统农业企业开始转型,大力发展农业物联网(Internet of Things,IoT)。而如何保障农业物联网在传输层的信息安全,是产业转型面临的严峻挑战。为了保障农业数据在传输过程中的安全,提出非对称加...随着我国农业信息化的高速发展,越来越多的传统农业企业开始转型,大力发展农业物联网(Internet of Things,IoT)。而如何保障农业物联网在传输层的信息安全,是产业转型面临的严峻挑战。为了保障农业数据在传输过程中的安全,提出非对称加密算法对数据进行加密解密,详细概述了加密解密模块建设的原理和实现方法,为数据安全提供了有效的保护手段。展开更多
真随机数发生器(True Random Number Generator,TRNG)是保密通信系统以及信息安全芯片中的重要单元之一,用来产生系统所需要的真随机数序列,从而实现通信加密或者身份认证。对传统的基于模拟随机源的真随机数发生器结构进行了改进,在随...真随机数发生器(True Random Number Generator,TRNG)是保密通信系统以及信息安全芯片中的重要单元之一,用来产生系统所需要的真随机数序列,从而实现通信加密或者身份认证。对传统的基于模拟随机源的真随机数发生器结构进行了改进,在随机源后加入数字处理单元,包含曼彻斯特编码器、线性反馈移位寄存器(Linear Feedback Shift Register,LFSR)和AES运算单元。模拟随机源产生的真随机数序列在经过数字电路的后处理后,再送入系统中进行使用。数模混合仿真结果显示,该结构可有效提高真随机数的随机性指标,提高系统和芯片的加密性能,保障通信及数据安全。展开更多
Multi-Source data plays an important role in the evolution of media convergence.Its fusion processing enables the further mining of data and utilization of data value and broadens the path for the sharing and dissemin...Multi-Source data plays an important role in the evolution of media convergence.Its fusion processing enables the further mining of data and utilization of data value and broadens the path for the sharing and dissemination of media data.However,it also faces serious problems in terms of protecting user and data privacy.Many privacy protectionmethods have been proposed to solve the problemof privacy leakage during the process of data sharing,but they suffer fromtwo flaws:1)the lack of algorithmic frameworks for specific scenarios such as dynamic datasets in the media domain;2)the inability to solve the problem of the high computational complexity of ciphertext in multi-source data privacy protection,resulting in long encryption and decryption times.In this paper,we propose a multi-source data privacy protection method based on homomorphic encryption and blockchain technology,which solves the privacy protection problem ofmulti-source heterogeneous data in the dissemination ofmedia and reduces ciphertext processing time.We deployed the proposedmethod on theHyperledger platformfor testing and compared it with the privacy protection schemes based on k-anonymity and differential privacy.The experimental results showthat the key generation,encryption,and decryption times of the proposedmethod are lower than those in data privacy protection methods based on k-anonymity technology and differential privacy technology.This significantly reduces the processing time ofmulti-source data,which gives it potential for use in many applications.展开更多
文摘随着我国农业信息化的高速发展,越来越多的传统农业企业开始转型,大力发展农业物联网(Internet of Things,IoT)。而如何保障农业物联网在传输层的信息安全,是产业转型面临的严峻挑战。为了保障农业数据在传输过程中的安全,提出非对称加密算法对数据进行加密解密,详细概述了加密解密模块建设的原理和实现方法,为数据安全提供了有效的保护手段。
文摘真随机数发生器(True Random Number Generator,TRNG)是保密通信系统以及信息安全芯片中的重要单元之一,用来产生系统所需要的真随机数序列,从而实现通信加密或者身份认证。对传统的基于模拟随机源的真随机数发生器结构进行了改进,在随机源后加入数字处理单元,包含曼彻斯特编码器、线性反馈移位寄存器(Linear Feedback Shift Register,LFSR)和AES运算单元。模拟随机源产生的真随机数序列在经过数字电路的后处理后,再送入系统中进行使用。数模混合仿真结果显示,该结构可有效提高真随机数的随机性指标,提高系统和芯片的加密性能,保障通信及数据安全。
基金funded by the High-Quality and Cutting-Edge Discipline Construction Project for Universities in Beijing (Internet Information,Communication University of China).
文摘Multi-Source data plays an important role in the evolution of media convergence.Its fusion processing enables the further mining of data and utilization of data value and broadens the path for the sharing and dissemination of media data.However,it also faces serious problems in terms of protecting user and data privacy.Many privacy protectionmethods have been proposed to solve the problemof privacy leakage during the process of data sharing,but they suffer fromtwo flaws:1)the lack of algorithmic frameworks for specific scenarios such as dynamic datasets in the media domain;2)the inability to solve the problem of the high computational complexity of ciphertext in multi-source data privacy protection,resulting in long encryption and decryption times.In this paper,we propose a multi-source data privacy protection method based on homomorphic encryption and blockchain technology,which solves the privacy protection problem ofmulti-source heterogeneous data in the dissemination ofmedia and reduces ciphertext processing time.We deployed the proposedmethod on theHyperledger platformfor testing and compared it with the privacy protection schemes based on k-anonymity and differential privacy.The experimental results showthat the key generation,encryption,and decryption times of the proposedmethod are lower than those in data privacy protection methods based on k-anonymity technology and differential privacy technology.This significantly reduces the processing time ofmulti-source data,which gives it potential for use in many applications.
