共查询到19条相似文献，搜索用时 265 毫秒
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基于DNA纳米技术的各种超分子体(功能单元),能实现信息存储、计算、移动和靶向送药等功能,其纳米结构的控制精度达到了原子级。基于DNA纳米技术的信息存储和计算模式,具有高度并行性、高密度和低能耗,天生适用于大量信息的存储和并行处理。面对这种新兴的计算模式,人们研究和开发了各种计算模型,讨论其对传统密码体系的影响和DNA存储信息的安全问题,包括密钥搜索、信息加密、信息隐藏及认证等。文章综述了基于DNA纳米技术的各种计算模型对传统加密算法的影响,概述了利用DNA纳米技术进行加密解密、认证签名的方案和技术,总结了当前基于DNA纳米技术的信息安全领域研究中存在的问题并展望了DNA计算及其在信息安全和存储领域的应用前景。 相似文献
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当今密码学和信息安奎保密技术已逐步得到广泛的重视,信息安全的基础设施已开始建设,相应的网络安全软、硬件已逐步形成一个新的产业,其中包括加密,认证(含数字签名,身份认证、不可否认性和完整性)、防火墙、抗病毒、信息隐藏等方面的产品,在军事、政府机构,金融系统,医疗保健、通信网络、远程教育系统、耕造业等领域开始得到广泛应用.下面就单钥密码体制和双钥密码体制在电子购物中的虚用进行一些简单探讨. 相似文献
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文章分析了信息隐藏技术实现的可行性,阐述了隐写术、数字水印等信息隐藏技术之间的联系与区别。重点比较了信息隐藏与传统密码学本质的不同,信息隐藏是现有信息安全研究领域的一个有力补充,对计算机、通信等领域有重要的研究意义。 相似文献
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基于随机相位编码技术的光学安全系统的研究进展 总被引：5，自引：1，他引：5
近年来,光学技术在信息安全领域的应用研究得到重大发展,已经远远超出传统的全息防伪的范畴,吸引着越来越多科研人员投身到这一全新领域的研究,目前已提出一些能实现身份认证和信息加密的光学系统。在这些系统实现方案中,最引人注目的是由B Javidi等于1 995年提出并在近几年来渐渐发展起来的双随机相位编码光学加密方案.主要回顾这一技术及其进展 相似文献
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我国信息安全问题的分析与对策 总被引：1，自引：3，他引：1
叙述了我国信息安全的现状，阐述了信息安全问题的表现形式，包括黑客攻击，信息侵权，信息污染，信息走私，病毒危害等，提出相应的技术措施如信息加密，信息伪装（或信息隐藏），信息过滤，信息确认，网络控制技术等，并在此基础上提出了保护我国信息安全的几点对策。 相似文献
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基于信息安全交换的目的,利用P-集合的动态特性,对传输的真信息进行加密隐藏的方法,把真信息隐藏在假信息内,实现信息的安全传输.提出F2信息隐藏与还原定理,给出辨识方法,利用这些结果,给出F-信息隐藏与还原的应用,通过实验验证了它的合理性.实现了信息的安全传输.P-集合是研究动态信息系统的一个新理论和新方法. 相似文献
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We present a lossless Deoxyribonucleic Acid (DNA) sequence hiding method that can be used for ensuring authenticity of DNA sequence in the context of Mobile Cloud based healthcare systems. Hiding data within DNA sequence results in permanent information loss in DNA sequence. Therefore, providing DNA sequence authenticity using data hiding is challenging. Moreover, existing works on DNA data hiding require a reference DNA sequence data to retrieve hidden data. Hence, current methods are not blind approaches and inappropriate for ensuring authenticity of DNA sequence in the Mobile Cloud. The proposed method hides authentication data within DNA sequence, extracts authentication data, and reconstructs the DNA sequence without any loss of information. From there, our proposed approach guarantees DNA sequence authenticity and integrity in Mobile Cloud based healthcare systems. We present a security analysis of our method to show that the method is secured. We conduct several experiments to demonstrate the performance of our proposed method. 相似文献
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The mechanism of business analytics affordances enhancing the management of cloud computing data security is a key antecedent in improving cloud computing security. Based on information value chain theory and IT affordances theory, a research model is built to investigate the underlying mechanism of business analytics affordances enhancing the management of cloud computing data security. The model includes business analytics affordances, decision-making affordances of cloud computing data security, decision-making rationality of cloud computing data security, and the management of cloud computing data security. Simultaneously, the model considers the role of data-driven culture and IT business process integration. It is empirically tested using data collected from 316 enterprises by Partial Least Squares-based structural equation model. Without data-driven culture and IT business process integration, the results suggest that there is a process from business analytics affordances to decision-making affordances of cloud computing data security, decision-making rationality of cloud computing data security, and to the management of cloud computing data security. Moreover, Data-driven culture and IT business process integration have a positive mediation effect on the relationship between business analytics affordances and decision-making affordances of cloud computing data security. The conclusions in this study provide useful references for the enterprise to strengthen the management of cloud computing data security using business analytics. 相似文献
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身份认证解决云计算中信息安全威胁的重要手段之一。身份认证的本质是根据用户所知道的东西、拥有的东西或所具有的生物特征来确认用户身份。现有的使用密码技术的身份认证技术主要由三种:基于公钥基础设施(PKI)的、基于组合公钥(CPK)的、基于身份加密(IBE)的。文章通过几种身份认证技术的原理以及特点的对比,分析出各自的优势。 相似文献
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【目的/意义】公共云存储平台中学术信息资源的内容安全保障既关系到用户科研活动的持续性和稳定性,
也符合云环境下学术信息资源的数据管理需求。【方法/过程】本文在分析了学术信息资源内容安全特点及其对云
存储平台内容安全保障的影响的基础上,结合学术信息资源内容安全特点,提出从内容安全审核、存储控制、传播
控制入手,构建面向学术信息资源的一体化内容安全保障模型。【结果/结论】设计了基于学术信息资源云存储流程
的一体化内容安全保障模型,同时论证了该模型的推进需要同步落实专门化的学术信息资源云存储服务组织、推
进云存储用户实名制、提高身份认证安全等级以及强化用户协同机制和约束机制。【创新/局限】关注到了资源行业
领域特点导致的内容安全保障需求差异,提出了基于内容安全审核结果的分级存储控制和实时传播控制机制,进
而构建了存储、使用到传播的一体化学术信息资源内容安全保障方案。 相似文献
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目前的信息传送绝大部分是基于互联网开展的,而由TCP/IP理论构建的互联网从机理上就无法保证传送的信息安全。为此,本文尝试采用数值逼近的经典理论-拉格朗日插值方法,展开数值信息隐藏与分析地研究。通过对传送数据加入前向干扰项、后向干扰项以及隐藏区间的方法,实现真实数值信息隐藏在海量的传送数据之中。不采用本文专有的信息分析方法,通过海量传送数据是无法还原出真实数值信息的。 相似文献
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《The Journal of High Technology Management Research》2023,34(2):100474
Industry 4.0 places a premium on cloud security since more and more companies are moving their activities to the cloud to reap the benefits of the Fourth Industrial Revolution.The term “cloud computing” refers to a collection of Internet-based hardware and software tools. Providers of cloud services use data centers situated in various physical locations. Cloud computing makes life easier for users by making remote, simulated resources available over the internet. Google Apps and Microsoft SharePoint are two examples of popular cloud applications. In addition to its exciting potential, the “cloud computing” industry's lightning-fast expansion raises serious security concerns. When discussing security, cloud really suffers from Open Systems' and the internet's perennial problem. The only thing stopping the widespread use of cloud computing is the lack of trust in the system. There are a number of security concerns with cloud computing, including protecting user data and vetting cloud service providers' practices. Using encryption, confidential information can be sent over an unsecured channel without fear of data loss or manipulation. Data encryption using various protocols has been used in various settings. Different cryptosystems were developed and used at various times. Additionally, cloud computing enables multiple users to access and retrieve data simultaneously through their own personal Internet connections, which increases the risk of confidential data loss and exposure in a number of different places. Elliptic Curve Cryptography and other cryptographic algorithms have been used to develop numerous methods and protocols that guarantee the security and privacy of transmitted data. In this paper, we suggest a safe and efficient method for sharing information in the cloud without compromising its safety or integrity. The proposed system is able to guarantee authentication and data integrity because it uses a hybrid of the ECC and the Advanced Encryption Standard (AES) technique. The experimental results confirm the proposed approach outperforms the current gold standard. 相似文献
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Internet of things (IoT) coupled with mobile cloud computing has made a paradigm shift in the service sector. IoT-assisted mobile cloud based e-healthcare services are making giant strides and are likely to change the conventional ways of healthcare service delivery. Though numerous approaches for preventing unauthorized access to information exchanged between a mobile phone and cloud platform do exist, but there is no security mechanism to prevent unauthorized access by the cloud administrators. With an aim to ensure security of client data such as Electronic Patient Records (EPR), we propose a novel high-capacity and reversible data hiding approach for securely embedding EPR within the medical images using Optimal Pixel Repetition (OPR). OPR converts every pixel of the input image to a 2 × 2 block to facilitate reversibility by ensuring all the pixels in a 2 × 2 block to have different values. Since a 2 × 2 block is comprised of 4-pixel elements, which could be arranged in sixteen possible ways; we generate a lookup table corresponding to sixteen possible positions of pixels. EPR hiding in each block is achieved by permuting the pixels of a block according to the four-bit word of secret data, resulting in a histogram invariant stego image. The histogram invariance improves the robustness of the proposed scheme to statistical attacks. A stego image is said to hide embedded data securely, when it provides better imperceptivity for an appreciably high payload. Thus, while using information embedding approach for securing client data on a mobile-cloud platform, high imperceptivity is a desirable feature. Experimental results show that average PSNR obtained is 42 dB for payload 1.25 bpp by our scheme, showing its effectiveness for preventing unauthorized access to client’s sensitive data. 相似文献
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Hadoop作为著名开源云计算技术近年来得到广泛应用,研究成果快速增长。理论研究主要集中在任务调度、小文件优化、中间数据管理、功能扩展和安全性优化;应用研究主要涉及数据存储、数据分析、数据挖掘、搜索引擎以及信息安全领域。通过分析相关研究成果明确Hadoop近年来国内研究现状。 相似文献
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DNA纳米技术是设计和构建具有一定用途的人工核酸纳米结构。DNA纳米技术中的一个重要挑战就是如何有效设计和构建具有明确功能的纳米尺度的结构和器件。计算机辅助工具是预测、设计、建模以及描绘DNA结构的最强有力的工具。计算机辅助设计DNA结构以及识别有效的自组装路径让DNA作为一种独特的材料在构建纳米结构领域中显露锋芒。文章总结了DNA纳米结构设计的原理,介绍了一些用于DNA结构设计的算法以及一些用户友好软件。同时,对DNA纳米技术中构建DNA逻辑门以及DNA计算方面的最新研究进展做了介绍。 相似文献