Quantum Cryptography: Uncertainty in the Service of Privacy

Islam Abd Elghaffar Abd Elmaaboud El Shaarawy

Charles H. Bennett, Tim Watson

a cryptographic key, enabling Alice to scramble her messages in a way only Bob, knowing the same key, could unscramble. Privacy thus appeared to be generally unavailable to users lacking the means and foresight by which diplomats and spies share secret keys with their intended correspondents. Classical cryptography offered no purely mathematical solution to this "key distribution problem ". Meanwhile the only solution to the discreet communications problem appeared to be for Alice and Bob to confide their secrets in a trusted intermediary, who might later choose to blackmail them. All this was changed by PKC. The idea of PKC is for each user (eg Alice) to randomly choose a pair of mutually inverse transformations---a scrambling transformation and an unscrambling transformation---and to publish the directions for performing the former but not the latter. Anyone, including Bob, can then use Alice's public scrambling algorithm to prepare a message that only she can unscramble. Si

nbspVenkatesh Prasad. G, nbspRohit A S Nair, S nbspNagamani +1 more

Neha Diwaker, Babita Gupta, Nibh Kumari +1 more

Shraddha Shelar, Deepali D. Rane

In today’s fastest-growing life, all need to be more secure in terms of advancement in technology. Everything is going to be a part of digitization. In this, almost everyone is using online storage for storing their personal and important and official secret information. To sustain integrity there should be trustworthy services must be carried out in the back end. Online security has been provided for the cloud with a very powerful privacy system. But still, there is a possibility of different interrupts in terms of stacks like DoS, Denial of Service attack can happen any time to break the normal flow of service. Henceforth, this paper will provide a strong security system for data storage with double encryption format and a more complex structure, for we will express the algorithm through the quantum cryptographic environment to use under the homomorphism technique of modern cryptography.