International Association of Computer Science & Information Technology (IACSIT)
A proxy signature scheme is a method which allows an original signer to delegate their signing authority to a designated person, called a proxy signer. Moreover, the signing authority can be designated to a few proxy signers to scatter the signing rights. A threshold proxy signature scheme allows t out of n proxy signers to sign messages on behalf of the original signer. In this paper, the authors propose a new threshold proxy signature scheme based on the factoring problem in which the original signer delegates their signing authority to n authorized proxy signers in such a way that any t out of n proxy signers can generate a proxy signature collectively, while t-1 or less proxy signers cannot.