Based on the Kim-like's proxy multi-signature scheme, an improved proxymulti-signature scheme is proposed. The new scheme overcomes the two problems in the Kim-like'sproxy multi-signature scheme: (1) Security ...Based on the Kim-like's proxy multi-signature scheme, an improved proxymulti-signature scheme is proposed. The new scheme overcomes the two problems in the Kim-like'sproxy multi-signature scheme: (1) Security issue ( every original signer can forge a valid proxymulti-signature for any message); (2) Efficiency issue ( both the size of the proxy multi-signatureand the efficiency of signature checking are dependent on the number of the original signers).展开更多
A staff member adjusts the vol.ume of Fertilizers for vegetabLes in a greenhouse through an all-in-one machine for watering,power suppty and Fertilizing in Haimen,east China's Jiangsu Province,on December 4.Eco-fi...A staff member adjusts the vol.ume of Fertilizers for vegetabLes in a greenhouse through an all-in-one machine for watering,power suppty and Fertilizing in Haimen,east China's Jiangsu Province,on December 4.Eco-fiendly,highefficiency agricutture has become a new engine for the tocal growth.展开更多
基金This work is supported by the Natural Science Foundation of China (No.60372094No.90204017) and"973"project of China (No.G1999035804).
文摘Based on the Kim-like's proxy multi-signature scheme, an improved proxymulti-signature scheme is proposed. The new scheme overcomes the two problems in the Kim-like'sproxy multi-signature scheme: (1) Security issue ( every original signer can forge a valid proxymulti-signature for any message); (2) Efficiency issue ( both the size of the proxy multi-signatureand the efficiency of signature checking are dependent on the number of the original signers).
文摘A staff member adjusts the vol.ume of Fertilizers for vegetabLes in a greenhouse through an all-in-one machine for watering,power suppty and Fertilizing in Haimen,east China's Jiangsu Province,on December 4.Eco-fiendly,highefficiency agricutture has become a new engine for the tocal growth.
