Differential Cryptanalysis On Reduce ARIA

Modern cryptological theory and cryptological technology are important basis of information security. Block cipher is an important branch of cryptology, it has many attractive features such as high rates, easy for standardization, and efficient for both software and hardwareim plementations.Block ciphers are usually core components in information and Internet security for data encryption,data signature,authentication and key management.The research contents of block ciphers can be divided into three parts:design principles of block ciphers,security analysis of block ciphers and application research of blockc iphers.Concentrating on security analysis and design of block ciphers,some achievements have been obtained in this dissertation:Analysised the character of diffusion layers , the 4-rounds ARIA impossible differential are constructed..According to 4-round impossible differential,5-round ARIA is analysed.6-round ARIA impossible differential are given...