Signcrypting the group signature with non-transitive proxy re-encryption in vanet

Abstract

SignCryption is the public-key cryptographic tool to guarantee various security paradigms by integrating digital signature and encryption. The traditional digital signature with encryption is very expensive as it requires massive computational overheads. Instead signcryption combines these two into one step, and overhead reduced is significantly observable. Proxy re-encryption is a technique in which a proxy enables a third person Chris to be able to decrypt a message which was sent by Alice for Bob. Instead of first signing and then encrypting, we are sending after just signcrypting the message into the network where proxy will re-encrypt it at the receiver end. We have used Bilinear Diffie-Hellman assumption, i.e., irreversible property of Diffie–Hellman assumption in bilinear groups with digital signatures to provide confidentiality, integrity, and non-repudiation. Later the result is evaluated using AVISPA, Automated Validation of Internet Security Protocols and Applications. © Springer Nature Singapore Pte Ltd. 2019