New secure cetificateless signcryption scheme without pairing
Xia An · Jisuanji yingyong yanjiu · 2014
The known certificateless signcryption schemes have many problems,for example,lack of security,low computational cost and so on. This paper proposed a new secure certificateless signcryption scheme without pairings,which was based on Sharmila's. And it was provably secure in the random oracle model( ROM). The proposed scheme did no use of pairing and exponentation. And compared with the most efficient scheme,the proposed one just needs 2 more point multiplications under the secure circumstance.