Analysis and Research of Proxy Signature Protocols

In a (t , n ) threshold proxy signature scheme, the original signer delegates the power of signing messages to a designated proxy group of an members. Any t or more proxy signers of the group can cooperatively issue a proxy signature on behalf of the original signer, but t-1or less of them cannot do the same thing. Using the Threshold-RSA method, the authors construct a secure RSA-based threshold proxy signature scheme.