AES支持的动态密钥文件保密秘密分享方案

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本文主要探讨了"基于AES的秘密共享方案"这一主题，发表在2014年的《国际安全及其应用》(International Journal of Security and Its Applications)第8卷第6期，页码为295-302。文章的doi链接为http://dx.doi.org/10.14257/ijsia.2014.8.6.26，ISSN为1738-9976，由SERSC版权持有。作者包括Jie Cui、Lei Chen、Yiming Zhang、Zhiqiang Xie和Hong Zhong，他们均来自中国安徽大学计算机科学技术学院，邮箱地址为cvjxabcd@126.com。该研究旨在解决文件加密中的关键设置难题和密钥安全性问题。随着计算机和网络通信技术的快速发展，信息安全日益重要。文章提出了一种新颖的基于AES（高级加密标准）的文件保密秘密共享方案。该方案利用AES加密算法保证文件的机密性，同时引入动态密钥生成机制，确保密钥的安全性。通过Shamir阈值秘钥分散存储方法，实现了对预处理密钥的多秘密共享策略，提高了系统的安全性。文中详细介绍了AES算法如何应用于数据加密，以及如何利用其特性来构建一个高效且安全的共享系统。作者可能讨论了AES算法的优势，如其强大的加密性能、灵活的密钥长度和块大小，以及在分布式环境中处理大密钥时的优势。在实施阶段，文章可能提供了实际的步骤和算法流程，以及在不同场景下的应用案例，以证明其方案的有效性和实用性。此外，为了评估方案的效率，文中可能进行了实验测试，并展示了测试结果，这些结果表明该秘密共享方案在保证信息安全的同时，具有良好的性能。关键词主要包括AES、秘密共享、Rijndael（AES的前身，也是同属于高级加密标准家族）、以及文件安全。整篇文章的研究重点在于结合AES算法与先进的安全技术，为提高文件传输和存储过程中的安全性提供了一种创新解决方案。这对于当前信息时代的数据保护具有重要意义。

International Journal of Security and Its Applications

Vol.8, No.6 (2014), pp.295-302

http://dx.doi.org/10.14257/ijsia.2014.8.6.26

ISSN: 1738-9976 IJSIA

A Secret Sharing Scheme Based on AES

Jie Cui, Lei Chen, Yiming Zhang, Zhiqiang Xie and Hong Zhong*

School of Computer Science and Technology, Anhui University, Hefei, China

cvjxabcd@126.com

Abstract

In order to solve the key setting difficulty and the key security problem in the file

encryption, key distributed storage technology may be a proper choice to help improve the

safety of the key. In the paper, a novel secret sharing scheme is proposed by AES encryption

algorithm for file confidentiality, dynamic key generation mechanism to generate keys, multi-

secret-sharing ideas on key pre-treatment, using Shamir threshold scheme for secret

dispersed storage. Finally, a few tests are carried out and the test results suggest that the

efficiency of the whole scheme is good.

Keywords: AES, secret sharing, Rijndael, file security

1. Introduction

With the rapid development of computer and network communication technology, the

information security, meanwhile, has become increasingly prominent, and events such as

information leaks and other incidents happen more frequently nowadays. Cryptography

provides many practical techniques to solve information security problems. In order to

guarantee security and confidentiality of the private documents, people mainly resort to

encryption to protect files, and make it impossible for users who do not have a key to steal

information. This makes the security and confidentiality mainly hinges on the security key,

thus an effective method of key management is needed. In recent years, the key dispersed

storage technology has become a trend in key management. It helps to solve the problem that

the key text can not be decrypted caused by losing or forgetting the key. What is more, the

application in the field of computer and network security will be of significance both in

theory and practice.

The first secret sharing scheme is (t, n) threshold secret sharing scheme, which is proposed

independently by Blakley [1] and Shamir [2] in 1979. On that basis, Shamir’s scheme, which

is based on the theory of polynomials, is easy to understand and implement, and catch more

attention of researchers. On the one hand, it solves on the problem of the original threshold

scheme, on the other hand, it can be applied to other fields extensively. The threshold scheme

provides a good way to improve other technologies. For example, Zhang, et al., [3] adopted

the combination technology of Shamir scheme and cloud storage technology to construct a

secure network disc. Xu, et al., [4] resolved copyright issues on digital media, and the

threshold scheme and broadcast encryption algorithm are combined to construct the identity-

based broadcast encryption scheme. In the literature [5], the threshold scheme was used to

protect software copyrights, copyright information, enhanced anti-aggression and

survivability and other issues. In the literature [6], an existing Watermarking Algorithms and

(t, n) threshold were adopted for the copyright watermark sharing, and the improved

algorithm had good security and anti-attack capability. In the literature [7], security forensics

and Shamir threshold scheme were integrated to improve the security of the forensic

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