多媒体数字音频安全加密技术研究

IF 0.7 Q3 COMPUTER SCIENCE, THEORY & METHODS
X. Zhou, C. Wei, Xiaotang Shao
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引用次数: 0

摘要

在多媒体技术发展的推动下,多媒体数字音频的加密越来越受到人们的关注;然而,基于密码学的加密方法在多媒体信息的加密中存在许多不足,迫切需要新的加密方法。本文简要介绍了密码学和混沌理论,设计了一种基于混沌的加密算法,该算法采用Logistic映射和正弦映射相结合的方式进行混淆,使用Hopfield混沌神经网络进行扩散,阐述了算法的加解密过程,并对算法进行了测试。结果发现,本文算法获得的密钥通过了SP800-22测试,三种加密音频与原始音频的相关性分别为0.0261、-0.0536、0.0237,均较小,峰值信噪比(PSNR)值分别为-0.348 dB、-7.645 dB、-3.636 dB,与原始音频差异显著。NSCR和UACI也更接近原始值。结果表明,该算法具有良好的安全性,能够对实际的多媒体数字音频进行加密。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Study of Encryption for Multimedia Digital Audio Security
—Driven by the development of multimedia, the encryption of multimedia digital audio has received more attention; however, cryptography-based encryption methods have many shortcomings in encryption of multimedia information, and new encryption methods are urgently needed. This paper briefly introduced cryptography and chaos theory, designed a chaos-based encryption algorithm that combined Logistic mapping and Sine mapping for confusion and used a Hopfield chaos neural network for diffusion, explained the encryption and decryption process of the algorithm, and tested the algorithm. It was found that the keys obtained by the proposed algorithm passed the SP800-22 test, and the correlation between the three encrypted audio and the original audio was 0.0261, -0.0536, and 0.0237, respectively, all of which were small, and the peak signal-to-noise ratio (PSNR) values were -0.348 dB, -7.645 dB, and -3.636 dB, respectively, which were significantly different from the original audio. The NSCR and UACI were also closer to the original values. The results prove that the proposed algorithm has good security and can encrypt the actual multimedia digital audio.
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来源期刊
CiteScore
2.30
自引率
22.20%
发文量
519
期刊介绍: IJACSA is a scholarly computer science journal representing the best in research. Its mission is to provide an outlet for quality research to be publicised and published to a global audience. The journal aims to publish papers selected through rigorous double-blind peer review to ensure originality, timeliness, relevance, and readability. In sync with the Journal''s vision "to be a respected publication that publishes peer reviewed research articles, as well as review and survey papers contributed by International community of Authors", we have drawn reviewers and editors from Institutions and Universities across the globe. A double blind peer review process is conducted to ensure that we retain high standards. At IJACSA, we stand strong because we know that global challenges make way for new innovations, new ways and new talent. International Journal of Advanced Computer Science and Applications publishes carefully refereed research, review and survey papers which offer a significant contribution to the computer science literature, and which are of interest to a wide audience. Coverage extends to all main-stream branches of computer science and related applications
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