On the security of symmetric ciphers based on DNA coding》.pdfVIP

Information Sciences 289 (2014) 254–261 Contents lists available at ScienceDirect Information Sciences journal homepage: www.else /locate/ins On the security of symmetric ciphers based on DNA coding Yushu Zhang a, Di Xiao a,⇑, Wenying Wen b, Kwok-Wo Wong c a College of Computer Science, Chongqing University, Chongqing 400044, China b School of Information Technology, Jiangxi University of Finance and Economics, Nanchang 330013, China c Department of Electronic Engineering, City University of Hong Kong, Hong Kong Special Administrative Region a r t i c l e i n f o a b s t r a c t Article history: The security issues of symmetric ciphers based on DNA coding are studied in this paper. Received 19 June 2013 Firstly, ciphers solely based on DNA coding are described. Their operation principle is that Received in revised form 25 July 2014 a plain bit-string is mapped to a base-string according to a rule selected from eight possible Accepted 2 August 2014 ones. Then the base-string is processed with another secret base-string by one or more Available online 11 August 2014 DNA operations such as XOR, addition and subtraction. Based on this framework, two basic models are constructed: to code at random or to employ a secret base-string. The security Keywords: of these two models is analyzed. Secondly, two existing encryption schemes combining DNA coding