Analysis and Improvement of Identity-based Signcryption Schemes
Jiang Yong-he · Jisuanji gongcheng · 2012
This paper analyzes three identity-based signcryption schemes,attacks the first two schemes using Indistinguishability under Chosen Ciphertext Attack(IND-CPA),attacks the last one using IND-CPA and forgery attacks method and provides improved schemes respectively.Analysis results show that the improved schemes maintain higher efficiency while satisfying confidentiality,unforgeability,nonrepudiation,public verification and forward security.