Proxy Signature Scheme with Effective Revocation Using Bilinear Pairings

We present a proxy signature scheme using bilinear pairings that provides effective proxy revocation. The scheme uses a binding-blinding technique to avoid secure channel requirements in the key issuance stage. With this technique, the signer receives a partial private key from a trusted authority and unblinds it to get his private key, in turn, overcomes the key escrow problem which is a constraint in most of the pairing-based proxy signature schemes. The scheme fulfills the necessary security requirements of proxy signature and resists other possible threats

Roll No: 02005019

1.1 Need for Parallel Systems............................... 1 1.2 Need for Object-oriented Database Systems..................... 1 1.3 Parallelism in Object-oriented systems........................

A novel remote user authentication scheme using bilinear pairings

The paper presents a remote user authentication scheme using the properties of bilinear pairings. In the scheme, the remote system receives user login request and allows login to the remote system if the login request is valid. The scheme prohibits the scenario of many logged in users with the same login-ID, and provides a flexible password change option to the registered users without any assistance from the remote system.© Elsevie