An Efficient Identity Based Self Proxy Signature Scheme With Warrant

In the proxy signatures an original signer delegates his signing rights to the other entity but in a self proxy signature scheme, user delegates his signing rights to himself and generates the temporary key pairs. In a self proxy signature, a user can generate multiple number of temporary keys (depending on the application), so as to prevent the exposure of his private key from repeated use. This paper presents an efficient self proxy signature scheme with warrant based on Identity Based cryptography. The authors also present the comparative study of the scheme and security analysis.