Lin Chih-Hsueh, Hu Guo-Hsin, Chen Jie-Sheng, Yan Jun-Juh, Tang Kuang-Hui
Department of Electronic Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, 80778 Taiwan.
Department of Industrial Upgrading Service, Metal Industries Research and Development Centre, Kaohsiung, 81160 Taiwan.
Multimed Syst. 2022;28(5):1793-1808. doi: 10.1007/s00530-022-00950-6. Epub 2022 May 21.
In this paper, a novel chaos-based cryptosystem is proposed to ensure the communication security of video/audio streaming in the network environment. Firstly, by the proposed synchronization controller for the master and slave chaotic systems, respectively, embedded in the transmitter and receiver, the cryptosystem can generate the synchronized and dynamic chaotic random numbers at the transmitter and receiver simultaneously. Then integrating the chaotic random numbers with SHA3-256 (Secure hash algorithm 3), the design of synchronized dynamic key generators (SDKGs) is completed. Continuously, we can apply the SDKGs to encrypt/decrypt streaming audio/video data. In our design, we introduce the AES CFB (Advanced encryption standard cipher feedback) encryption algorithm with SDKGs to encrypt the video/audio streaming. Then the cipher-text is transmitted to the receiver via the network public channel and it can be fully decrypted with the dynamic random keys synchronously generated at the receiver. A duplex audio/video cryptosystem is realized to illustrate the performance and feasibility of this proposed research. Finally, many tests and comparisons are performed to stress the quality of random sequences generated by proposed SDKGs.
本文提出了一种新型的基于混沌的密码系统，以确保网络环境中视频/音频流的通信安全。首先，通过分别嵌入发送端和接收端的主从混沌系统的同步控制器，该密码系统能够在发送端和接收端同时生成同步且动态的混沌随机数。然后，将混沌随机数与SHA3-256（安全哈希算法3）相结合，完成同步动态密钥生成器（SDKGs）的设计。接着，我们可以将SDKGs应用于加密/解密流音频/视频数据。在我们的设计中，引入带有SDKGs的AES CFB（高级加密标准密文反馈）加密算法来加密视频/音频流。然后，密文通过网络公共信道传输到接收端，并且可以使用在接收端同步生成的动态随机密钥进行完全解密。实现了一个双工音频/视频密码系统，以说明该研究所提出方法的性能和可行性。最后，进行了许多测试和比较，以强调所提出的SDKGs生成的随机序列的质量。
