Assistant Professor,
A recent paper has discussed the implementstion of the three-stage piotocol as a multi-photon tolerant protocol. In this paper. we present a powerful algorithm to further enhance the security of the three-stage protocol. Using this algorithm the three-stage protocol will be provided with yet another layer of security by provisioning an initialisation vector between the two communication parties. The addition of this contrivance makes it theoretically impossible for any intruder to recover the plaintext except under the condition when the intruder has simultaneous real-time access to four elements, in the implementation of the protocol. In this paper, it is postulated that the concept can be extended to an electronic implementation with minor enhancements.