The Ring Signature Scheme

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Deniable ring signature: The ring signature scheme which has the property of anonymity revocation is known as deniable ring signatures. This was first proposed by Susilo and Nu . In this ring signature scheme, the verifier can interact with the signer or entities to confirm that the signer or entity has signed the signature with zero knowledge interactive proof. In this signature scheme, any signer cannot shift blame to other entities. Denial ring authentication is a combination of ring signatures and deniable authentication. Digital signatures provides authentication of messages thus providing non-repudiation of messages. In most of the applications, non-repudiation is one of the desirable properties, but in some applications it may not be. Inspired by such requirements Naor introduced Deniable ring signature scheme in 2002. In such ring authentication scheme, the verifier can be convinced that a entity of an adhoc group of participants is authenticating a message m, by not disclosing the identity information of the signer entity. It is also not possible for the verifier to convince any third party entity that message m is authenticated. This has been found in a number of applications. The Deniable ring signature scheme has the following properties:
1.It should be a good authentication scheme if no adversary can force a receiver to accept a message for which it is not the intended receiver. So it should be forgery resistant.
2.The authentication is done in way of zero
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