Certificateless Cross-Domain Group Authentication Key Agreement Scheme Based on ECC

Focusing on the problem that existing traditional cross-domain group authentication schemes have a high complexity, certificateless key agreement scheme based ECC is proposed. The protocol provides scalability and can meet requirements of negotiation by multiple participants in different domains. Security analysis shows proposed secure random oracle security model, it resist some attacks under extended Canetti-Krawczyk (eCK) model. Performance strong practical application value with efficiency; costs relatively low amount calculation communication.