ID-based tripartite Authenticated Key Agreement Protocols from pairings
This paper proposes ID-based tripartite authenticated key agreement protocols. The authenticated three party key agreement protocols from pairings , and the ID-based two party authenticated key agreement protocol  are studied. These two protocols are taken as the basis for designing three new ID-based tripartite authenticated key agreement protocols. The security properties of all these protocols are studied listing out the possible attacks on them. Further, these protocols are extended to provide key confirmation.
Signcryption scheme for Identity-based Cryptosystems
An Identity-based cryptosystem is a Public Key cryptosystem in which the public keys of the entities are their identities, or strings derived from their identities. Signcryption combines digital signatures and encryption with a cost significantly smaller than that required for signature-then-encryption. This paper proposes an ID-based signcryption scheme based on bilinear pairings on elliptic curves. It is shown that the new scheme is an improved version of the existing signcryption scheme  by comparing the computations in both the schemes.
- Divya Nalla (2)