Research On Application Of Block Cipher Based On Petri Net

Network already became the guarantee of social development, but the code technology guarantees the network information security the important technology. Designing a code technology, the most important work is how let it play the most major role designs code technology needs to do.The block cipher is one of important tools which the code technology uses, not only it can be used to encrypt the news, moreover may be the method structure MAC and the Hash function . Professor Wu Zhehui proposed a kind of block cipher based on Petri net. Its grouping length is through the Petri net movement, the integer prime factor is decomposition and the synthesis, the integer and non-negative integer vector sorting and so on determine a 2~k Yuan replacement, thus realizes k block cipher.Firstly, this present paper simply introduces research significance, the present research situation and the background of the block cipher, also the movement principle of this kind of block cipher. Secondly, this paper gave the strengthened technology of the block cipher and the two criteria of the code pattern design. And carried on the research on the kind block cipher system based on Petri net cascade operation pattern (CM), namely the multiple encryption technology has conducted the research, proposed one kind of new multiple encipherment scheme. Thirdly it also conducted the research to two kinds based on the CBC and CTR mode of operation, proposed two kinds of improvement suitable mode of operation, finally discussed the secure of these codes.