Multi-proxy quantum group signature scheme with threshold shared verification
Yang Yu-Guang(杨宇光)a)b)
a College of Computer Science and Technology, Beijing University of Technology, Beijing 100022, China; b State Key Laboratory of Information Security, Graduate School of Chinese Academy of Sciences, Beijing 100049, China
Abstract A multi-proxy quantum group signature scheme with threshold shared verification is proposed. An original signer may authorize a proxy group as his proxy agent. Then only the cooperation of all the signers in the proxy group can generate the proxy signature on behalf of the original signer. In the scheme, any $t$ or more of $n$ receivers can verify the message and any $t-1$ or fewer receivers cannot verify the validity of the proxy signature.
Received: 17 January 2007
Revised: 13 March 2007
Accepted manuscript online:
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