New Dawn of Security in Telecommunications: Quantum Cryptography
•Download as PPT, PDF•
1 like•874 views
Presented by: Mayssaa El Rifai and Bhagyashri Arun Darunkar
More Related Content
Similar to New Dawn of Security in Telecommunications: Quantum Cryptography
Similar to New Dawn of Security in Telecommunications: Quantum Cryptography (20)
More from Society of Women Engineers
More from Society of Women Engineers (20)
Recently uploaded
Recently uploaded (20)
New Dawn of Security in Telecommunications: Quantum Cryptography
- 1. 101010000111100…….. New Dawn of Security in Telecommunications: Quantum Cryptography Presented By: Mayssaa El Rifai Bhagyashri Arun Darunkar University of Oklahoma, Tulsa
- 2. 101010000111100…….. Introduction: Need for secure communication Wide spread availability of information through Internet Keeping data safe from an unintended user Mobility of data because of cloud Protecting privacy on the Internet cloud Global corporates with multiple locations Communicating confidential data over optical network Secure communication between data servers Email and workplace application data security Dependence of World’s economy on ‘Information’ The growth in information is relentless -Moore’s Law Volume of information from the beginning until 2003 is generated in just two days now* *Ref: —Milner, Newsweek, Oct. 10, 2011 2
- 3. 101010000111100…….. Timeline of Secure Communication Ancient methods Mathematical cryptography • Symmetric • Asymmetric Quantum Cryptography introduced • Weisner 1970 Quantum key distribution •BB84 •Three-stage protocol Quantum data Communication 3
- 4. 101010000111100…….. Why Quantum Cryptography? • Quantum Cryptography was first proposed in 1970 • The first protocol in quantum cryptography was proposed in a paper published in 1984 by Bennett and Brassard (BB84) • The basics of the quantum cryptography rest on two main principles The Heisenberg uncertainty principle The no-cloning theorem 4
- 5. 101010000111100…….. Protocols The BB’84 protocol The Three-stage protocol The Three-stage protocol using four variables The Single-stage protocol 5
- 6. 101010000111100…….. Limitations of BB’84 6 Single photon requirement Data rateDistance Limitations Solution USE MULTI-PHOTON TOLERANT QUANTUM SECURE PROTOCOL
- 7. 101010000111100…….. The Three-stage Protocol: Idea ALICE BOB ALICE BOB Information Information Information Information 7
- 8. 101010000111100…….. The Three-Stage Protocol: Science Proposed by Dr. Kak in 2006 X UA X UB 8
- 9. 101010000111100…….. The Single-stage protocol Alice and Bob make use of this shared information to form new key by using concept of braiding ALICE BOBInformation Information Variation in Dr. Kak’s protocol, proposed by James Thomas Assumption Prerequisite 9
- 10. 101010000111100…….. Summary 10 Current Cryptography protocols are based on mathematical assumptions and can be broken with quantum computers Quantum cryptographic techniques are associated with many limitations Multi-photon tolerant protocols present a better candidate for future quantum communication system
- 12. 101010000111100…….. Contact Details Bhagyashri Darunkar Email: Bhagyashri@ou.edu Mayssaa El Rifai Email: mayssaa@ou.edu 12
Editor's Notes
- To overcome the limitations associated with single photons in BB84, a three stage protocol was proposed in 2006 by Dr Kak. The orthogonal state X can be any of the pure states 0 or 1 or a superposition of those. The secret transform used are real values and commutative for every angle. The function description of the protocol is as shown in diagram here Alice applies her unitary transform on first leg and send it to Bob. Bob applied his transform and send it to Alice then Alice will remove her transform and when Bob removes his transform, he has the information.