題名: A Novel Efficient (t,n) Threshold Proxy Signature Scheme 作者: Huang, H. F.;Chang, C. C.
關鍵詞: Proxy signature;Threshold proxy signature scheme;Discrete logarithm;Lagrange interpolation
日期: 2006-03
上傳時間: 2009-12-17T06:58:23Z 出版者: Asia University
摘要: All previously proposed threshold proxy signature schemes have been based on discrete logarithms required for a protocol to generate and verify a shared secret among the proxy group. Therefore, it is necessary for the proxy signers to perform many expensive modular exponential
computations and communications to obtain and verify a shared secret.
Moreover, most of the existing threshold proxy signature schemes reveal that the receiver cannot find out who signed the proxy signatures. We propose an efficient (t, n) threshold proxy signature scheme based on Schnorr?s scheme. Compared with existing (t, n) threshold proxy signature schemes, our scheme can reduce the amount of computations and
communications. In our method, not only the original signer can know who generated the proxy signature, but also the receiver can certify the
actuality of the group signers who made the proxy signature. We offer convenience and fair distribution of auditing a document?s signers.
