Aggregate Signcryption In Smart Grid And Anonymity Group Authentication For V2G

Smart Grid is a new power system, which is highly integrated by the advancedsensor measurement technology, advanced communication technology, advancedcomputer technology, etc, with new physical Grid. Compared with the traditional powergrid, smart grid employs innovative service together with strong resistivity, real-timecommunication, two-way communication and privacy security. Frequent data exchangein smart grid not only brings a lot of computing and communication overhead, but alsobrings great threat to the users’ privacy. According to the application needs of homeusers in Smart Grid, this paper proposes an identity-based aggregate signcryptionscheme which combines pseudonymous ID and batch signature verification. Thescheme really accelerates the signature verification speed of the aggregator and protectsthe privacy of users and improves the efficiency of the whole system at the same time.While, according to the large overhead and users’ privacy problem of electric vehicledynamic accession to the public charging stations, this paper gives an anonymity groupauthentication scheme based on the revocable group signature.