New field of cryptography: DNA cryptography

查看全文 作　　者：XIAO [1]Guozhen;LU [1]Mingxin;QIN [2]Lei;LAI [3]Xuejia 机构地区：[1]National Key Lab of ISN, Xidian University, Xi'an 710071, China;[2]Queen's University, Cancer Research Institute, 10 Stuart St. Kingston, ON K7L3N6, Canada;[3]Department of Computer Science & Engineer, Shanghai JiaoTong University, Shanghai 200030, China 出　　处：《Chinese Science Bulletin》索引2006年第51卷第12期,共8页 基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.60473028).We thank the review experts for their very valued revise advice. 摘　　要：DNA cryptography is a new born cryp- tographic field emerged with the research of DNA computing, in which DNA is used as information car- rier and the modern biological technology is used as implementation tool. The vast parallelism and ex- traordinary information density inherent in DNA molecules are explored for cryptographic purposes such as encryption, authentication, signature, and so on. In this paper, we briefly introduce the biological background of DNA cryptography and the principle of DNA computing, summarize the progress of DNA cryptographic research and several key problems, discuss the trend of DNA cryptography, and compare the status, security and application fields of DNA cryptography with those of traditional cryptography and quantum cryptography. It is pointed out that all the three kinds of cryptography have their own ad- vantages and disadvantages and complement each other in future practical application. The current main difficulties of DNA cryptography are the absence of effective secure theory and simple realizable method. The main goal of the research of DNA cryptography is exploring characteristics of DNA molecule and reac- tion, establishing corresponding theories, discovering possible development directions, searching for sim- ple methods of realizing DNA cryptography, and lay- ing the basis for future development. 关 键 词：密码术 DNA计算 DNA密码 信息载体 生物技术