Visible to the public Biblio

Filters: Author is Li, Liang  [Clear All Filters]
2022-05-05
Zhang, Qiao-Jia, Ye, Qing, Li, Liang, Liu, Si-jie, Chen, Kai-qiang.  2021.  An efficient selective encryption scheme for HEVC based on hyperchaotic Lorenz system. 2021 IEEE 5th Advanced Information Technology, Electronic and Automation Control Conference (IAEAC). 5:683—690.
With the wide application of video information, the protection of video information from illegal access has been widely investigated recently. An efficient selective encryption scheme for high efficiency video coding (HEVC) based on hyperchaotic Lorenz system is proposed. Firstly, the hyperchaotic Lorenz system is discretized and the generated chaotic state values are converted into chaotic pseudorandom sequences for encryption. The important syntax elements in HEVC are then selectively encrypted with the generated stream cipher. The experimental results show that the encrypted video is highly disturbed and the video information cannot be recognized. Through the analysis of objective index results, it is shown that the scheme is both efficient and security.
2021-05-05
Zhang, Qiao-Jia, Ye, Qing, Yuan, Zhi-Min, Li, Liang.  2020.  Fast HEVC Selective Encryption Scheme Based on Improved CABAC Coding Algorithm. 2020 IEEE 6th International Conference on Computer and Communications (ICCC). :1022—1028.

Context-based adaptive binary arithmetic coding (CABAC) is the only entropy coding method in HEVC. According to statistics, CABAC encoders account for more than 25% of the high efficiency video coding (HEVC) coding time. Therefore, the improved CABAC algorithm can effectively improve the coding speed of HEVC. On this basis, a selective encryption scheme based on the improved CABAC algorithm is proposed. Firstly, the improved CABAC algorithm is used to optimize the regular mode encoding, and then the cryptographic algorithm is used to selectively encrypt the syntax elements in bypass mode encoding. The experimental results show that the encoding time is reduced by nearly 10% when there is great interference to the video information. The scheme is both safe and effective.

2019-09-23
Li, Bo, Kong, Libo, Huang, Yuan, Li, Liang, Chen, Jingyun.  2018.  Integration of QR Code Based on Generation, Parsing and Business Processing Mechanism. Proceedings of the International Conference on Information Technology and Electrical Engineering 2018. :18:1–18:5.
The process of information and transformation of society has become a habit in modem people. We are accustomed to using the mobile phone for all kinds of operations, such as: sweep code to order meals, buy tickets and payment, thanks to the popularity of QR code technology in our country. There are many applications in the market with the function of scanning QR code, however, some QR codes can only be parsed by the specified application software. For instance, it can not work when using Alipay scanning QR code which configured by WeChat payment certificate Web program. The user will not be able to pay for such operations. For a product or service provider, different QR codes need to be created for different applications; for a user, a certain business operation needs to face multiple QR codes to select corresponding software in the device. The integration of QR code technology has become a key breakthrough point to improve the competitiveness of enterprises.