Research On Partial Blind Signcryption Scheme In Heterogeneous Cryptography

Information is an important resource in today's society,and the network is an important way to connect information resources.From military science and technology to business office and daily life,data communication and network are constantly improving the appearance of various fields.At present,with the continuous development of network technology,5G network with ultra-dense heterogeneous network has become a big data transmission vehicle,and its development trend has become a global focus.The complex interaction of node environment has become the top priority of information security transmission.Therefore,the information encryption scheme for heterogeneous password environment has become an urgent need in 5G network.In this kind of heterogeneous network,sign the secret is to ensure that the message at the same time one of the key technologies to realize communication encryption and message authentication,its efficient performance in the process of information transmission not only ensure its confidentiality but also shall not forge,reduce the encrypted signature first brought by the high computational cost,and high communication become the indispensable to 5G network information security technology.At the same time,the addition of partial blindness to signcryption not only ensures the privacy of information content but also increases the correctness of information,which can greatly meet the needs of message transmission and data privacy protection in the heterogeneous password environment of 5 G network.Most of the existing signcryption schemes are in the same cryptosystem and do not have blind communication scheme that is non-blind isomorphic cryptographic environment.In view of the communication mode and information privacy protection requirements in the heterogeneous cipher environment,it is urgent to study the information communication and privacy protection scheme suitable for the heterogeneous environment.In view of this,this paper designs a partial blind signcryption scheme in two heterogeneous environments to ensure the confidentiality and non-forgery of the messages in transmission.(1)Given CLPKC?TPKI heterogeneous partial blind signature scheme's formal definition and the security model,and designed a without a certificate of public key cryptosystem in traditional public key cryptography infrastructure partial blind signature scheme,not only ensure the message in the transfer of illicit close sex,and overcome the people sign the secret under the condition of total blindness to the message content authenticity could not judge which brings the problems such as the sign of dense abuse.In addition,the scheme satisfies the confidentiality and non-forgery under the stochastic prediction model.Since there is no need for bilinear pairwise operation in the signcryption stage,this scheme has high computational efficiency.(2)By combining password and signature secret,a partial blind signature secret scheme from public key cryptosystem without certificate to identity cryptosystem is proposed.Instead of the traditional way of memorizing lengthy private keys by devices such as U shield,the user memorizes passwords directly,which is portable and so on.The analysis results show that the scheme has lower computational cost.Very suitable for all kinds of electronic equipment with low computing power.