检索结果-内蒙古大学图书馆

encryption Techniques for Cloud Data Confidentiality

INTERNATIONAL JOURNAL OF GRID AND DISTRIBUTED COMPUTING 2014年第4期7卷 11-20页

作者： Soofi, Aized Amin Khan, M. Irfan Fazal-e-Amin Govt Coll Univ Coll Comp Sci & Informat Studies Faisalabad Pakistan King Saud Univ Coll Comp & Informat Sci Riyadh Saudi Arabia

Cloud computing is one of the fastest growing internet based technology that facilitates users to utilize services by making use of large poll of resources without installation of any software. Adoption of this technology is increasing rapidly because of many advantages including reduction of cost and IT load. Despite the popularity of cloud computing, it faces many difficulties such as security that is one of the major inhibitors in the growth of cloud computing. Data confidentiality is at the top of the list of security concern for this technology. Many methods have been introduced to overcome this issue;encryption is one of them and widely used method to ensure the data confidentiality in cloud environment. In this study, an attempt is made to review the encryption techniques used for the data confidentiality. The results of review are classified on the basis of type of approach and the type of validation used to validate the approach.

关键词： Cloud data security Data concealment Data encryption encryption algorithm

来源：评论

学校读者我要写书评

暂无评论

Accelerating Leveled Fully Homomorphic encryption Using GPU

Accelerating Leveled Fully Homomorphic Encryption Using GPU

引用

IEEE International Symposium on Circuits and Systems

作者： Wei Wang Zhilu Chen Xinming Huang Department of Electrial and Computer Engineering Worcester Polytechnic Institute MA 01609USA

ISBN: (纸本)9781479934331

Gentry introduced the first plausible fully homomorphic encryption (FHE) scheme, which was considered a major breakthrough in cryptography. Several FHE schemes have been proposed to make FHE more efficient for practical applications since then. The leveled fully homomorphic scheme is among the most well-known schemes. In leveled FHE scheme, large-number matrix-vector multiplication is a crucial part of the encryption algorithm. In this paper, Chinese Remainder Theorem (CRT) is employed to reduce the computational complexity of the large-number element-by-element modular multiplication. The first step is called decomposition, in which each large-number element in the matrix and vector is decomposed into many small words. The next step is vector operation that performs the modular multiplications and additions of the decomposed small words. Finally the matrix-vector multiplication results can be obtained through reconstruction. We compare the CRT-based method with Number Theory Library (NTL), showing the proposed method is about 7.8 times faster when executing on CPU. In addition, it is observed that vector operation takes up to 99.6% of the total computation time and the reconstruction only takes 0.4%. Therefore GPU acceleration is employed to speed up the vector operations. Experiment results show that the GPU implementation of the CRT-based method is 35.2 times faster than the same method implemented on CPU and is 273.6 times faster than the NTL library on CPU.

关键词： fully homomorphic encryption Chinese remainder theorem matrix-vector multiplication CUDA Chinese remainder theorem central processing units Homomorphic encryption encryption algorithm GRAPPER PICK UP Graphics Processing Unit Cloning Vectors computational time Scheme Matrix multiplication acceleration Multiplication

来源：评论

学校读者我要写书评

暂无评论

Pluggable encryption algorithm In Secure Shell(SSH) Protocol

Pluggable Encryption Algorithm In Secure Shell(SSH) Protocol

引用

2nd International Conference on Emerging Trends in Engineering and Technology (ICETET09)

作者： Iyappan, P. Arvind, K. S. Geetha, N. Vanitha, S. Rajiv Gandhi Coll Engg & Technol Pondicherry India Dr Pauls Coll Engn Pondicherry India

ISBN: (纸本)9781424452507

System security is a crucial constraint for Secure Transfer of data. Because of the nature of the SSH Protocol, anyone with access to the central server can manipulate files, it is imperative that only authorized users be able to access the central server. Secure Transfer has taken steps that will discourage several common attempts to forcefully gain access to the system. These steps include implementing a port knocking protocol, limiting access to only authorized machines and users, and keeping persistent logs. The Secure Shell (SSH) protocol is one of the most popular cryptographic protocols on the Internet. Secure Shell Protocol (SSH) uses the standard algorithms namely DES, AES and the RSA. Any user normally can use these algorithms which is being specified by the SSH protocol. As it is an OpenSSH, it is possible for the hackers to break the security during transmission of data. The idea behind the paper was when we allow the users to specify their own encryption techniques, which is not known to others can improve their security and also from hackers breaking the code. This will helps the user to create their encryption standards in the SSH protocol which provides more security to the users network and known only to the users.

关键词： Secure Shell Protocol Symmetric & Asymmetric Cryptosystems encryption algorithm

来源：评论

学校读者我要写书评

暂无评论

Use of elliptic curve cryptography for multimedia encryption

引用

IET INFORMATION SECURITY 2013年第2期7卷 67-74页

作者： Tawalbeh, Lo'ai Mowafi, Moad Aljoby, Walid Jordan Univ Sci & Technol Dept Comp Engn Cryptog Hardware & Informat Secur CHiS Lab Irbid Jordan Jordan Univ Sci & Technol Dept Network Engn & Secur Irbid Jordan

The unique characteristics of the elliptic curve cryptography (ECC) such as the small key size, fast computations and bandwidth saving make its use attractive for multimedia encryption. In this study, the ECC is used to perform encryption along with multimedia compression, and two ECC-based encryption algorithms are introduced and applied before and during compression. The first algorithm performs selective encryption on the transform coefficients during compression, whereas the second algorithm achieves perceptual encryption based on selective bit-plane encryption before compression. The results of applying ECC to multimedia encryption are presented and analysed with respect to the requirements of multimedia encryption: the encryption efficiency, compression efficiency, codec compliance and security level. It is shown that ECC is highly efficient and does not affect the compression efficiency, and accordingly can meet the multimedia encryption requirements.

关键词： Security level encryption algorithm cryptography MULTI-MEDIA SYSTEM compression COMPRESSION EFFICIENCY

来源：评论

学校读者我要写书评

暂无评论

Efficient Privacy of Message encryption algorithm for Anonymous Receivers in E-commerce

Efficient Privacy of Message Encryption Algorithm for Anonym...

引用

2nd International Conference on Biomedical Engineering and Informatics (BMEI)

作者： Xu Xiang-yang Changsha Univ Dept Comp Sci & Technol Country Changsha Peoples R China

ISBN: (纸本)9781424441334

Protecting the privacy of message receivers is an important issue in pay services of e-commerce and the distribution of digital contents on the Internet. This paper proposes an efficient privacy of message encryption algorithm called PMEA for pay services of e-commerce. In PMEA, each of the receivers only needs to perform constant times of pairing computation to decrypt the received message. PMEA adopts bilinear pairings on elliptic curves to protect the privacy of message receivers, to ensure that an attacker or any other message receiver can not derive the identity of a message receiver such that the privacy of every receiver can be guaranteed. Detailed theoretical analysis proves that PMEA is secure and anonymous for message receivers.

关键词： privacy message encryption algorithm anonymous receivers E-commerce

来源：评论

学校读者我要写书评

暂无评论

A Study of DES and Blowfish encryption algorithm

A Study of DES and Blowfish Encryption Algorithm

引用

IEEE Region 10 Conference 2009

作者： Nie, Tingyuan Zhang, Teng Qingdao Technol Univ Commun & Elect Engn Inst Qingdao Peoples R China

ISBN: (纸本)9781424445462

With the rapid growing of internet and networks applications, data security becomes more important than ever before. encryption algorithms play a crucial role in information security systems. In this paper, we have a study of the two popular encryption algorithms: DES and Blowfish. We overviewed the base functions and analyzed the security for both algorithms. We also evaluated performance in execution speed based on different memory sizes and compared them. The experimental results show the relationship between function run speed and memory size.

关键词： encryption algorithm DES Blowfish

来源：评论

学校读者我要写书评

暂无评论

The security analysis of PhpBB forum

The security analysis of PhpBB forum

引用

International Conference on Cyberspace Technology (CCT 2014)

作者： Lijun Zhang Jia Fan Science and Technology on Communication Security Laboratory ChengDu China

ISBN: (纸本)9781510802704

PhpBB forum is one of the widely applied network forums. In this paper, we investigate the security of this kind of forum. We analyze the whole process of security mechanism related to user's password, including password checking in registration, password storage in database and password identification when users log in. Our research indicates that security of the earlier version is weak, and subsequent 3.0 version provides more secure cryptographic algorithm. However, in order to acquire the compatibility, the forum software retains the weak algorithm which brings the potential security threat. According to this vulnerability, we design the corresponding attack while we also propose the countermeasures.

关键词： cryptographic algorithm phpBB forum security analysis encryption algorithm Passwords Security security mechanism Consumers

来源：评论

学校读者我要写书评

暂无评论

A Smaller and Faster Variant of RSM 14

A Smaller and Faster Variant of RSM

引用

Design, Automation and Test in Europe Conference and Exhibition

作者： Noritaka Yamashita Kazuhiko Minematsu Toshihiko Okamura Yukiyasu Tsunoo NEC Corporation Nakahara-Ku Kawasaki Kanagawa Japan

ISBN: (纸本)9783981537024

Masking is one of the major countermeasures against side-channel attacks to cryptographic modules. Nassar et al. recently proposed a highly efficient masking method, called Rotating S-boxes Masking (RSM), which can be applied to a block cipher based on Substitution-Permutation Network. It arranges multiple masked S-boxes in parallel, which are rotated in each round. This rotation requires remasking process for each round to adjust current masks to those of the S-boxes. In this paper, we propose a method for reducing the complexity of RSM further by omitting the remasking process when the linear diffusion layer of the encryption algorithm has a certain algebraic property. Our method can be applied to AES with a reduced complexity from RSM, while keeping the equivalent security level.

关键词： encryption algorithm Block cipher Masking Security level Diffusion layers AES gene Auger electron spectroscopy masking method Rounding off rotation

来源：评论

学校读者我要写书评

暂无评论

Digital encrypt watermarking based on wavelet transform

Digital encrypt watermarking based on wavelet transform

引用

ICINS 2014 - 2014 International Conference on Information and Network Security

作者： Shibing Zhang Yanan Wu School of Electrical and Information Nantong University China

ISBN: (纸本)9781510804289

Watermarking encryption is an effective technique in the copyright protection of digital media. This paper focuses on the watermarking encryption and proposes a digital watermarking encryption algorithm which is based on Haar wavelet transform. In the algorithm, the watermark is pretreated with Arnold image transform according to the characteristic of the human vision system. It improves the security and the invisibility of watermark. Simulation results show that the algorithm is an effective encryption method and easy to be achieved.

关键词： Arnold transform Digital watermarking human visual system wavelet transform Digital watermarking wavelet transforms Watermarking cryptography Visual System computer vision encryption algorithm wavelets visibility

来源：评论

学校读者我要写书评

暂无评论

PWLCM Based Image encryption Through Compressive Sensing

PWLCM Based Image Encryption Through Compressive Sensing

引用

IEEE Recent Advances in Intelligent Computational Systems (RAICS)

作者： Abhishek George, Sudhish N. Deepthi, P. P. Natl Inst Technol Dept Elect & Commun Engn Calicut 673601 Kerala India

ISBN: (纸本)9781479921775

In this paper, compressive sensing is combined with a chaotic key based generation of measurement matrix to provide an effective encryption algorithm for multimedia security. Block-based compressive sensing provides a better way in the field of image and video transmission by reducing the memory requirements and complexity, where as multiple hypothesis prediction provides a competent way in improving PSNR during reconstruction of block based compressive sensed images and videos. The measurement matrix F place a crucial role in this compressive sensing and as well as in the reconstruction process. A possibility to generate secure measurement matrix using piecewise linear chaotic map (PWLCM) as the seed and then hiding initial condition, system parameter, number of iterations of PWLCM as the key enable the sender to incorporate room for encryption along with the compression in a single step. The above mentioned scheme provides high level of data security, reduced complexity, compression with a good reconstruction quality and beside all it reduce the burden of sending the measurement matrix along with the data which further reduces the complexity in over all compressive sensing framework.

关键词： measurement matrix Compressed sensing Data Security cryptography memory requirements images encryption algorithm Video transmission Imagery (Psychotherapy) high-level data type

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：