Analyzing Encryption Quality of RC5 and RC6 Block Ciphers for Grey Image Encryption Algorithm

Abstract

With the fast progression of information exchange in electronic way, security is becoming more important in information transmission as well as in storage. To protect the confidential data from unauthorized access, several encryption methods have been used. In this paper, we present an image encryption system based on RC5 and RC6 block ciphers. Then we analyze image encryption qualities of RC5 and RC6 as functions of their design parameters: word size w, number of rounds r, and secret key length b. From this analysis, optimal values for w, r and b are suggested to get maximum encryption quality of RC5 and RC6. This system is implemented by Java programming.