Provably secure signcryption scheme based on elliptic curves
Wang Tian-qin · Jisuanji yingyong yanjiu · 2010
Signcryption can provide simultaneous digital signature and encryption at a low computational and communication overhead compared with the signature-then-encryption approach.This paper proposed a signcryption scheme based on elliptic curves.Based on the theory of provable security,proved this scheme to be secure under the GDH(gap Diffie-Hellman) assumption in the random oracle model.It is secure against adaptive chosen plaintext/ciphertext attack.