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Research On Provable Secure Aggregate Signature Scheme And Its Application

Posted on:2020-10-25Degree:MasterType:Thesis
Country:ChinaCandidate:L WangFull Text:PDF
GTID:2428330590952491Subject:Applied Mathematics
Abstract/Summary:PDF Full Text Request
With the rapid development of information technology and the Internet of Things in recent years,industry has begun to change from automation to intelligence and networking.The combination of information and industrialization has become the inevitable trend of the development of industrial control industry in the future,but the security risks of industrial control systems are gradually increasing.A large number of data acquisition technologies and communication equipments are used in power system,which are easy to be exploited by malicious attackers and cause irreparable losses to the country.Therefore,it has become one of the important research directions in the field of power security that the secure transmission of power system data in the open network environment.Digital signature in cryptography,as the most intuitive and effective technique to ensure information security,plays an important role in the protection of network security.In this paper,a provable secure aggregate signature scheme and its applications are studied,and the main research contents include a provable secure aggregate short signature scheme is proposed,an aggregation signature authentication protocol for secure transmission of substation terminal data is designed and implemented.Specifically,the main research results are as follows:1.Based on the essence of aggregate signature,an efficient aggregate short signaturescheme based on bilinear pairwise and CDH difficulty problem is constructed,and theexistence of signature is proved to be unforgery under the random prophecy model.Inthis scheme,the concept of group is introduced to aggregate the data of the samegroup,so as to ensure that one key leak will not affect the signatures of other groups.In addition,only three bilinear pairing operations are required for signatureverification,and the signature length is shorter.The scheme combines the advantagesof aggregate signature and short signature,and is suitable for the environment withlimited bandwidth and computing resources,and requires a large amount ofverification.2.In this paper,a secure data transfer protocol is designed based on the aggregatesignature scheme.It is implemented by bouncycastle library,and the key source codeof the protocol is given.The protocol can be used in many substation terminal dataacquisition systems to ensure the correctness and integrity of power data in networktransmission.
Keywords/Search Tags:aggregate signature, random oracle, provable security, substation terminal, security protocol
PDF Full Text Request
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