Multi-signcryption scheme using identity and bilinear pairing
Xiao Guo-zhen · Journal of Xidian University · 2007
Based on identity and bilinear pairing on the Elliptic Curve,a new multi-signcryption scheme is proposed.In this scheme,the user's public key is his identity information,such as e-mail address,IP address,telephone number etc.This greatly decreases the cost of building and managing public key infrastructures;the expense of the users' management of public-key and their certificates is avoided.By using bilinear pairing on the elliptic curve,this scheme can reach the equivalent security levels of the existing multi-signcryption schemes with a short length key and a small computational cost.Moreover,in this scheme,the original signcrypter using his private key decrypts the multi-signcrypted messages and verifies the validity of signcrypted messages and the order of multi-signcryption.Therefore,our multisigncryption scheme based on identity and bilinear pairing efficiently achieves the cryptographic functions of multi-signcryption.