Supported by the National High Technology Research and Development Program of China (2004AA001021), the Anhui Province Educa-tion Department Project (G2006jq1011) and Hefei University of Technology Project (G061105F)
A proxy signature scheme allows an original signer to delegate his signing capability to a proxy signer who can sign on behalf of the original signer. A blind signature is the concept with a salient feature that the s...