the National Natural Science Foundation of China (Nos. 60773092,60873229,60903178 and 60672072);the Zhejiang Provincial Natural Science Foundation of China (No. Y106505);the Fundamental Research Funds for the Central Universities (No. 2010B09614);the Foundation of Hohai University (No. 2084/409265)
The only known construction of key-insulated signature(KIS) that can be proven secure in the standard model is based on the approach of using double signing. That is,the scheme requires two signatures:a signature with...
Supported by the National Natural Science Foundation of China (No. 60573032, 60773092, 90604036, 60873229, 60903178, 60672072, 60832003);Zhejiang Provincial Natural Science Foundation of China (No. Y106505)
In proxy signature schemes,the proxy signer B is permitted to produce a signature on behalf of the original signer A. However,exposure of proxy signing keys can be the most devastating attack on a proxy signature sche...