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Quantum Key Distribution: Provably Secure Encryption
 
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Hackers steal data constantly, so protecting it is an ongoing challenge. Today's information encryption technology has been compromised and will be obsolete in just a few years. Quantum Key Distribution (QKD) technology can be proven by the laws of physics to help secure the sensitive data we deliver—today and into the future.
Views: 21996 BattelleInnovations
Quantum Cryptography Explained
 
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This episode is brought to you by Squarespace: http://www.squarespace.com/physicsgirl With recent high-profile security decryption cases, encryption is more important than ever. Much of your browser usage and your smartphone data is encrypted. But what does that process actually entail? And when computers get smarter and faster due to advances in quantum physics, how will encryption keep up? http://physicsgirl.org/ ‪http://twitter.com/thephysicsgirl ‪http://facebook.com/thephysicsgirl ‪http://instagram.com/thephysicsgirl http://physicsgirl.org/ Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2 Creator/Editor: Dianna Cowern Writer: Sophia Chen Animator: Kyle Norby Special thanks to Nathan Lysne Source: http://gva.noekeon.org/QCandSKD/QCand... http://physicsworld.com/cws/article/n... https://epic.org/crypto/export_contro... http://fas.org/irp/offdocs/eo_crypt_9... Music: APM and YouTube
Views: 269842 Physics Girl
Quantum Optics – Quantum cryptography the BB84 QKD scheme
 
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One-photon based quantum technologies In this lesson, you will discover two quantum technologies based on one photon sources. Quantum technologies allow one to achieve a goal in a way qualitatively different from a classical technology aiming at the same goal. For instance, quantum cryptography is immune to progress in computers power, while many classical cryptography methods can in principle be broken when we have more powerful computers. Similarly, quantum random number generators yield true random numbers, while classical random number generators only produce pseudo-random numbers, which might be guessed by somebody else than the user. This lesson is also an opportunity to learn two important concepts in quantum information: (i) qubits based on photon polarization; (ii) the celebrated no-cloning theorem, at the root of the security of quantum cryptography. Learning Objectives • Apply your knowledge about the behavior of a single photon on a beam splitter to quantum random number generators. • Understand the no-cloning theorem • Understand and remember the properties of q qubit This course gives you access to basic tools and concepts to understand research articles and books on modern quantum optics. You will learn about quantization of light, formalism to describe quantum states of light without any classical analogue, and observables allowing one to demonstrate typical quantum properties of these states. These tools will be applied to the emblematic case of a one-photon wave packet, which behaves both as a particle and a wave. Wave-particle duality is a great quantum mystery in the words of Richard Feynman. You will be able to fully appreciate real experiments demonstrating wave-particle duality for a single photon, and applications to quantum technologies based on single photon sources, which are now commercially available. The tools presented in this course will be widely used in our second quantum optics course, which will present more advanced topics such as entanglement, interaction of quantized light with matter, squeezed light, etc... So if you have a good knowledge in basic quantum mechanics and classical electromagnetism, but always wanted to know: • how to go from classical electromagnetism to quantized radiation, • how the concept of photon emerges, • how a unified formalism is able to describe apparently contradictory behaviors observed in quantum optics labs, • how creative physicists and engineers have invented totally new technologies based on quantum properties of light, then this course is for you. Subscribe at: https://www.coursera.org
Views: 4331 intrigano
Quantum Cryptography Explained in Under 6 Minutes
 
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Quantum Cryptography explained simply. Regular encryption is breakable, but not quantum cryptography. Today we'll look at the simplest case of quantum cryptography, quantum key distribution. It uses the Heisenberg Uncertainty Principle to prevent eavesdroppers from cracking the code. Hi! I'm Jade. Subscribe to Up and Atom for new physics, math and computer science videos every week! *SUBSCRIBE TO UP AND ATOM* https://www.youtube.com/c/upandatom *Let's be friends :)* TWITTER: https://twitter.com/upndatom?lang=en *QUANTUM PLAYLIST* https://www.youtube.com/playlist?list=PL1lNrW4e0G8WmWpW846oE_m92nw3rlOpz *SOURCES* http://gva.noekeon.org/QCandSKD/QCandSKD-introduction.html https://www.sans.org/reading-room/whitepapers/vpns/quantum-encryption-means-perfect-security-986 https://science.howstuffworks.com/science-vs-myth/everyday-myths/quantum-cryptology.htm The Code Book - Simon Singh *MUSIC* Prelude No. 14 by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/preludes/ Artist: http://chriszabriskie.com/
Views: 20375 Up and Atom
Quantum Key Distribution and the Future of Encryption
 
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By Konstantinos Karagiannis Quantum computing will bring tumultuous change to the world of information security in the coming decade. As multi-qubit systems use quantum algorithms to slice through even 4096-bit PK encryption in seconds, new Quantum Encryption will be required to ensure data security. Join Konstantinos for a look at real world experiments in Quantum Key Distribution that BT and partners have recently performed that show what the future of encryption will look like. Remember the panic after Heartbleed when SOME passwords needed to be changed? Imagine a day when ALL communications are at risk of eavesdropping via Quantum Computers - a day when only new systems that exploit the weirdness of quantum mechanics can ensure privacy.
Views: 7750 Black Hat
Quantum Key Distribution Animation
 
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Animation by Mike Brodie
The BB84 Protocol
 
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A short video attempting to explain the Bennett & Brassard quantum cryptography protocol. I've omitted any mention of the particular details of quantum physics that would be involved in actual real-world implementations, such as particle polarization axes, spin, and so forth, instead replacing them with abstract "processes" and freakish mysterious "machines". The physical details (interesting though they are) are not needed to understand the basics of the protocol, and I'm no physicist, so I'd probably mess them up if I tried (assuming I haven't already!). Making these images has increased my affection for Microsoft PowerPoint, and putting them all into a video has hugely exacerbated my hatred for Windows Movie Maker. NOTE: An important missing piece of information: When Alice sends qubits to Bob, she chooses between process A and process B randomly for each qubit. NOTE 2: The following video explains BB84 as well, and gives more detail regarding the physics details: http://www.youtube.com/watch?v=7SMcf1MdOaQ NOTE 3: Here is another very interesting video about quantum cryptography. Any given real-world implementation, despite using the BB84 protocol, is bound to expose weaknesses that can be exploited. For example: http://www.youtube.com/watch?v=T0WnUlF2eAo
Views: 44691 Creature Mann
Secret Key Exchange (Diffie-Hellman) - Computerphile
 
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How do we exchange a secret key in the clear? Spoiler: We don't - Dr Mike Pound shows us exactly what happens. Mathematics bit: https://youtu.be/Yjrfm_oRO0w Computing Limit: https://youtu.be/jv2H9fp9dT8 https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 204933 Computerphile
Quantum key distribution | QuTech Academy
 
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Video: Quantum key distribution Do you want to learn more about Quantum Computers and the Quantum Internet? Find out what QuTech Academy has to offer at: http://qutech.nl/edu/
Views: 29 QuTech Academy
China's First Quantum Key Distribution Network!
 
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It was announced that China's first quantum key distribution network was tested in Beijing on Apr 3, 2007. The network consists of four nodes, which are connected via China Network Company's commercial fiber network. Each of the nodes is able to exchange keys with other three nodes and transfer node-to-node encrypted real-time video. The system is developed by Key Laboratory of Quantum Information ( http://lqcc.ustc.edu.cn ), University of Science and Technology of China.
Views: 1920 goldfox79
Quantum Key Distribution | QuTech Academy
 
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Video: Quantum Key Distribution Do you want to learn more about the building blocks of a Quantum Computer? View the complete course at: https://www.edx.org/course/the-building-blocks-of-a-quantum-computer-part-2 More courses at http://qutech.nl/edu/
Views: 24 QuTech Academy
Quantum cryptography, animated
 
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This animation by the Centre for Quantum Technologies at the National University of Singapore illustrates the process of quantum key distribution using entangled photons. The goal is for two people in different places to end up with identical keys by measuring these photons. We want these people - usually given the names Alice and Bob - to have a random sequence of 1s and 0s that they can use to scramble (and then unscramble) a message. The presence of entanglement between the photons means that any snooping will be revealed. Note: this animation has no sound. See also our video series on cryptography: https://www.youtube.com/playlist?list=PL4CHL5j4XhurVKJz16Qg6qj0toMHyLh7q
How to establish an encryption key securely with the Quantum Key Distribution scheme ?
 
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BB84 protocol is a quantum key distribution scheme developed by Charles Bennett and Gilles Brassard in 1984. It is the first quantum cryptography protocol. The protocol is provably secure, relying on the quantum property that information gain is only possible at the expense of disturbing the signal if the two states one is trying to distinguish are not orthogonal. It is a method of securely communicating a private key from one party to another for use in one-time pad encryption. So how to establish a random encryption key securely with the Quantum Key Distribution scheme ? Alice creates a random bit of 0 or 1 and then randomly selects one of her two bases (rectilinear or diagonal) to transmit it in. She then prepares a photon polarization state depending both on the bit value and basis. So for example a 0 is encoded in the rectilinear basis (+) as a vertical polarization state, and a 1 is encoded in the diagonal basis (x) as a 135° state. Alice then transmits a single photon in the state specified to Bob, using a quantum channel. This process is then repeated from the random bit stage, with Alice recording the state, basis and time of each photon sent. As Bob does not know the basis the photons were encoded in, all he can do is to select a basis at random to measure in, either rectilinear or diagonal. He does this for each photon he receives, recording the time, measurement basis used and measurement result. After Bob has measured all the photons, he communicates with Alice over the public classical channel. Alice broadcasts the basis each photon was sent in, and Bob the basis each was measured in. They both discard photon measurements (bits) where Bob used a different basis, which is half on average, leaving half the bits as a shared key. Quantum key distribution is only used to produce and distribute a key, not to transmit any message data. This key can then be used with the one-time pad cipher with a secret random key. This video was downloaded and edited from Quantum cryptography, animated by Centre for Quantum Technologies @ https://www.youtube.com/watch?v=LaLzshIosDk
Views: 806 satnamo
Vladyslav Usenko - Proof-of-principle test of continuous-variable quantum key distribution in...
 
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Contributed Talk 13 by Vladyslav Usenko at 5th International Conference on Quantum Cryptography (QCrypt 2015) in Hitotsubashi Hall, Tokyo, September 30th, 2015. Title: "Proof-of-principle test of continuous-variable quantum key distribution in free-space atmospheric channel." Download the slides at: http://2015.qcrypt.net/scientific-program/
Views: 261 QCrypt 2015
Quantum Key Distribution - Norbert Lütkenhaus - USEQIP 2011
 
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A full lecture about Quantum Key Distribution by Prof. Norbert Lutkenhaus during the Undergraduate School on Experimental Quantum Information Processing (USEQIP) at the Institute for Quantum Computing. For more: iqc.uwaterloo.ca www.facebook.com/QuantumIQC Twitter: @QuantumIQC
Boris Korzh - Detector-device-independent quantum key distribution: From proof of principle to a ...
 
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Contributed Talk 3 by Boris Korzh at 5th International Conference on Quantum Cryptography (QCrypt 2015) in Hitotsubashi Hall, Tokyo, September 28th, 2015. Title: "Detector-device-independent quantum key distribution: From proof of principle to a high speed implementation." Download the slides at: http://2015.qcrypt.net/scientific-program/
Views: 253 QCrypt 2015
Quantum Key Distribution - Dr Anindita Banerjee, QuNu Labs Pvt Ltd
 
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Dr Anindita Banerjee, Quantum Security Specialist at QuNu Labs Pvt Ltd speaks on basics of Quantum Key Distribution and the processes involved.
Christopher Pugh explains his research in quantum key distribution
 
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PhD student Christopher Pugh researches free space propagation of quantum information signals over long distances for the purpose of secure quantum communication, specifically quantum key distribution (QKD). QKD uses the laws of quantum mechanics to establish a shared key that is secure and independent of any other data, provided the two parties also share a classical authenticated channel. The potential to share quantum keys globally opens up with a satellite network where quantum keys can be distributed from ground stations located around the world to satellite stations and back.
Post-Quantum Key Exchange for the TLS Protocol from the Ring Learning with Errors Problem
 
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Post-Quantum Key Exchange for the TLS Protocol from the Ring Learning with Errors Problem Douglas Stebila Presented at the 2015 IEEE Symposium on Security & Privacy May 18--20, 2015 San Jose, CA http://www.ieee-security.org/TC/SP2015/ ABSTRACT Lattice-based cryptographic primitives are believed to offer resilience against attacks by quantum computers. We demonstrate the practicality of post-quantum key exchange by constructing cipher suites for the Transport Layer Security (TLS) protocol that provide key exchange based on the ring learning with errors (R-LWE) problem, we accompany these cipher suites with a rigorous proof of security. Our approach ties lattice-based key exchange together with traditional authentication using RSA or elliptic curve digital signatures: the post-quantum key exchange provides forward secrecy against future quantum attackers, while authentication can be provided using RSA keys that are issued by today's commercial certificate authorities, smoothing the path to adoption. Our cryptographically secure implementation, aimed at the 128-bit security level, reveals that the performance price when switching from non-quantum-safe key exchange is not too high. With our R-LWE cipher suites integrated into the Open SSL library and using the Apache web server on a 2-core desktop computer, we could serve 506 RLWE-ECDSA-AES128-GCM-SHA256 HTTPS connections per second for a 10 KiB payload. Compared to elliptic curve Diffie-Hellman, this means an 8 KiB increased handshake size and a reduction in throughput of only 21%. This demonstrates that provably secure post-quantum key-exchange can already be considered practical.
QCrypt2017 Mo11 Practical post quantum key exchange
 
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Douglas Stebila , "Practical post-quantum key exchange", QCrypt2017, Mo11 18-22 Sept 2017, Cambridge UK
Views: 254 QCrypt2017
Network Security - One Time Pad & Quantum Key Distribution
 
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Fundamentals of Computer Network Security This specialization in intended for IT professionals, computer programmers, managers, IT security professionals who like to move up ladder, who are seeking to develop network system security skills. Through four courses, we will cover the Design and Analyze Secure Networked Systems, Develop Secure Programs with Basic Cryptography and Crypto API, Hacking and Patching Web Applications, Perform Penetration Testing, and Secure Networked Systems with Firewall and IDS, which will prepare you to perform tasks as Cyber Security Engineer, IT Security Analyst, and Cyber Security Analyst. course 2 Basic Cryptography and Programming with Crypto API: About this course: In this MOOC, we will learn the basic concepts and principles of cryptography, apply basic cryptoanalysis to decrypt messages encrypted with mono-alphabetic substitution cipher, and discuss the strongest encryption technique of the one-time-pad and related quantum key distribution systems. We will also learn the efficient symmetric key cryptography algorithms for encrypting data, discuss the DES and AES standards, study the criteria for selecting AES standard, present the block cipher operating modes and discuss how they can prevent and detect the block swapping attacks, and examine how to defend against replay attacks. We will learn the Diffie-Hellman Symmetric Key Exchange Protocol to generate a symmetric key for two parties to communicate over insecure channel. We will learn the modular arithmetic and the Euler Totient Theorem to appreciate the RSA Asymmetric Crypto Algorithm, and use OpenSSL utility to realize the basic operations of RSA Crypto Algorithm. Armed with these knowledge, we learn how to use PHP Crypto API to write secure programs for encrypting and decrypting documents and for signing and verify documents. We then apply these techniques to enhance the registration process of a web site which ensures the account created is actually requested by the owner of the email account. Module 1 - Basic Cryptography In this module we learn the basic concepts and principles of crytography, introduce the basic concept of cryptoanalysis using mono-alphabetic substitution cipher as an example, and discuss the one-time-pad and quantum key distribution concepts. Learning Objectives • Compose secure program with Crypto API for encryption, authentication, and integrity checking • Understand terminologies of basic cryptography • Understand Kerchhoff Principle • Apply cryptoanalysis techniques on mono-alphabetic ciphers • Explain why one time pad is strongest and understand how quantum key can be distributed
Views: 331 intrigano
What is Post Quantum Cryptography?
 
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What if all "secured" websites could no longer be trusted to keep your data safe? The impact on eCommerce, banking, and other websites we use every day would be devastating. Learn about Quantum Computing, and why this is a very real risk not too far away. Download the guide to learn more https://web.securityinnovation.com/what-is-post-quantum-cryptography.
Views: 5517 Security Innovation
Will Quantum Computers break encryption?
 
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How do you secure messages over the internet? How do quantum computers break it? How do you fix it? Why don't you watch the video to find out? Why does this description have so many questions? Why are you still reading? What is the meaning of life? Facebook: https://www.facebook.com/frameofessence Twitter: https://twitter.com/frameofessence YouTube: https://www.youtube.com/user/frameofessence CLARIFICATIONS: You don't actually need a quantum computer to do quantum-safe encryption. As briefly mentioned at 7:04 , there are encryption schemes that can be run on regular computers that can't be broken by quantum computers. CORRECTIONS: [2:18] Technically, you can use any key to encrypt or decrypt whatever you want. But there's a specific way to use them that's useful, which is what's shown in the video. [5:36] In RSA, depending on exactly what you mean by "private key", neither key is actually derivable from the other. When they are created, they are generated together from a common base (not just the public key from the private key). But typically, the file that stores the "private key" actually contains a bit more information than just the private key. For example, in PKCS #1 RSA private key format ( https://tools.ietf.org/html/rfc3447#appendix-A.1.2 ), the file technically contains the entire public key too. So in short, you technically can't get the public key from the private key or vice versa, but the file that contains the private key can hold more than just the private key alone, making it possible to retrieve the public key from it. Video links: Encryption and HUGE numbers - Numberphile https://youtu.be/M7kEpw1tn50 The No Cloning Theorem - minutephysics https://youtu.be/owPC60Ue0BE Quantum Entanglement & Spooky Action at a Distance - Veritasium https://youtu.be/ZuvK-od647c Sources: Quantum Computing for Computer Scientists http://books.google.ca/books/about/Quantum_Computing_for_Computer_Scientist.html?id=eTT0FsHA5DAC Random person talking about Quantum MITM attacks http://crypto.stackexchange.com/questions/2719/is-quantum-key-distribution-safe-against-mitm-attacks-too The Ekert Protocol (i.e. E91) http://www.ux1.eiu.edu/~nilic/Nina's-article.pdf Annealing vs. Universal Quantum Computers https://medium.com/quantum-bits/what-s-the-difference-between-quantum-annealing-and-universal-gate-quantum-computers-c5e5099175a1 Images, Documents, and Screenshots: Post-Quantum Cryptography initiatives http://csrc.nist.gov/groups/ST/post-quantum-crypto/cfp-announce-dec2016.html http://pqcrypto.eu.org/docs/initial-recommendations.pdf Internet map (Carna Botnet) http://census2012.sourceforge.net/ Quantum network maps https://www.slideshare.net/ADVAOpticalNetworking/how-to-quantumsecure-optical-networks http://www.secoqc.net/html/press/pressmedia.html IBM Quantum http://research.ibm.com/ibm-q/ Music: YouTube audio library: Blue Skies Incompetech: Jay Jay Pamgaea The House of Leaves Premium Beat: Cutting Edge Technology Second Time Around Swoosh 1 sound effect came from here: http://soundbible.com/682-Swoosh-1.html ...and is under this license: https://creativecommons.org/licenses/sampling+/1.0/
Views: 609703 Frame of Essence
Bing Qi: Continuous-Variable Quantum Key Distribution with a ‘Locally’ Generated Local Oscillator
 
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QCrypt 2016, the 6th International Conference on Quantum Cryptography, held in Washington, DC, Sept. 12-16, 2016. Web site: http://2016.qcrypt.net/
Views: 246 QuICS
Public key cryptography - Diffie-Hellman Key Exchange (full version)
 
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The history behind public key cryptography & the Diffie-Hellman key exchange algorithm. We also have a video on RSA here: https://www.youtube.com/watch?v=wXB-V_Keiu8
Views: 620533 Art of the Problem
Labcast #4: Quantum Key Distribution
 
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Toshiba is one of the world leaders in Quantum Cryptography and has been able to demonstrate the highest sustained bit rate for secure data communications. Toshibas new technique has sustained data rates of over 1megabit/sec, allowing for the first time the secure transmission of larger files such as audio and video. This episode contains an introduction to Toshibas research into Quantum Key Distribution and Quantum Cryptography. Dr Andrew Shields from the Toshiba Cambridge Research Lab, give's an introduction to the world of codes and ciphers by visiting historic Bletchley Park to look at codes of the past such as the Enigma and Lorentz Codes. The video also introduces Toshibas research in the field, with a demonstration of Quantum Encryption.
Views: 3144 leadinginnovation
Quantum Key Distribution (2010) Long version
 
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Introductory video of Quantum Key Distribution (2010) 23 minutes
Quantum Key Distribution: State of the Art Technology and Real-life Applications, Kelly Richdale
 
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Quantum Key Distribution: State of the Art Technology and Real-life Applications, Kelly Richdale, MBA & CISSP (ID Quantique) Initiated in 2015, the Centre for Quantum Engineering (CQE) is a thematic research centre in the field of quantum engineering at Aalto University. 22.04.2015 The official launching event of the new centre at Aalto enlightens the goals of the initiative and presents the first activities to realize them. Video by Aalto University Communications / Mikko Raskinen 2015
Views: 1324 Aalto University
Introduction to the Post-Quantum Supersingular Isogeny Diffie-Hellman Protocol
 
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A talk given at the University of Waterloo on July 12th, 2016. The intended audience was mathematics students without necessarily any prior background in cryptography or elliptic curves. Apologies for the poor audio quality. Use subtitles if you can't hear.
Views: 2090 David Urbanik
The Mathematics of Diffie-Hellman Key Exchange | Infinite Series
 
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Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/donateinfi Symmetric keys are essential to encrypting messages. How can two people share the same key without someone else getting a hold of it? Upfront asymmetric encryption is one way, but another is Diffie-Hellman key exchange. This is part 3 in our Cryptography 101 series. Check out the playlist here for parts 1 & 2: https://www.youtube.com/watch?v=NOs34_-eREk&list=PLa6IE8XPP_gmVt-Q4ldHi56mYsBuOg2Qw Tweet at us! @pbsinfinite Facebook: facebook.com/pbsinfinite series Email us! pbsinfiniteseries [at] gmail [dot] com Previous Episode Topology vs. “a” Topology https://www.youtube.com/watch?v=tdOaMOcxY7U&t=13s Symmetric single-key encryption schemes have become the workhorses of secure communication for a good reason. They’re fast and practically bulletproof… once two parties like Alice and Bob have a single shared key in hand. And that’s the challenge -- they can’t use symmetric key encryption to share the original symmetric key, so how do they get started? Written and Hosted by Gabe Perez-Giz Produced by Rusty Ward Graphics by Ray Lux Assistant Editing and Sound Design by Mike Petrow and Meah Denee Barrington Made by Kornhaber Brown (www.kornhaberbrown.com) Thanks to Matthew O'Connor, Yana Chernobilsky, and John Hoffman who are supporting us on Patreon at the Identity level! And thanks to Nicholas Rose, Jason Hise, Thomas Scheer, Marting Sergio H. Faester, CSS, and Mauricio Pacheco who are supporting us at the Lemma level!
Views: 50158 PBS Infinite Series
What is QUANTUM KEY DISTRIBUTION? What does QUANTUM KEY DISTRIBUTION mean?
 
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What is QUANTUM KEY DISTRIBUTION? What does QUANTUM KEY DISTRIBUTION mean? QUANTUM KEY DISTRIBUTION meaning - QUANTUM KEY DISTRIBUTION definition - QUANTUM KEY DISTRIBUTION explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Quantum key distribution (QKD) uses quantum mechanics to guarantee secure communication. It enables two parties to produce a shared random secret key known only to them, which can then be used to encrypt and decrypt messages. It is often incorrectly called quantum cryptography, as it is the best-known example of a quantum cryptographic task. An important and unique property of quantum key distribution is the ability of the two communicating users to detect the presence of any third party trying to gain knowledge of the key. This results from a fundamental aspect of quantum mechanics: the process of measuring a quantum system in general disturbs the system. A third party trying to eavesdrop on the key must in some way measure it, thus introducing detectable anomalies. By using quantum superpositions or quantum entanglement and transmitting information in quantum states, a communication system can be implemented that detects eavesdropping. If the level of eavesdropping is below a certain threshold, a key can be produced that is guaranteed to be secure (i.e. the eavesdropper has no information about it), otherwise no secure key is possible and communication is aborted. The security of encryption that uses quantum key distribution relies on the foundations of quantum mechanics, in contrast to traditional public key cryptography, which relies on the computational difficulty of certain mathematical functions, and cannot provide any mathematical proof as to the actual complexity of reversing the one-way functions used. QKD has provable security based on information theory, and forward secrecy. Quantum key distribution is only used to produce and distribute a key, not to transmit any message data. This key can then be used with any chosen encryption algorithm to encrypt (and decrypt) a message, which can then be transmitted over a standard communication channel. The algorithm most commonly associated with QKD is the one-time pad, as it is provably secure when used with a secret, random key. In real-world situations, it is often also used with encryption using symmetric key algorithms like the Advanced Encryption Standard algorithm.
Views: 194 The Audiopedia
QCrypt2017 Mo32 Reliable numerical key rates for quantum key distribution
 
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Patrick Coles, Adam Winick and Norbert Lutkenhaus, "Reliable numerical key rates for quantum key distribution", QCrypt2017, Mo32 18-22 Sept 2017, Cambridge UK
Views: 97 QCrypt2017
Quantum Key Distribution (2010) Short version
 
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Introductory video of Quantum Key Distribution (2010) 9 minutes
Masahide Sasaki - Quantum Key Distribution Platform and Its Applications
 
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Title: Quantum Key Distribution Platform and Its Applications Speaker: Masahide Sasaki 7th International Conference on Post-Quantum Cryptography PQCrypto 2016 https://pqcrypto2016.jp/program/
Views: 171 PQCrypto 2016
Key Exchange Problems - Computerphile
 
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Diffie Hellman has a flaw. Dr Mike Pound explains how a man in the middle could be a big problem, unless we factor it in... Public Key Cryptography: https://youtu.be/GSIDS_lvRv4 Elliptic Curve Cryptography: Coming Soon! https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 118677 Computerphile
Quantum Cryptography | CaltechX and DelftX on edX | Course About Video
 
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Learn how quantum communication provides security that is guaranteed by the laws of nature. Take this course free on edX: https://www.edx.org/course/quantum-cryptography-caltechx-delftx-qucryptox#! ABOUT THIS COURSE How can you tell a secret when everyone is able to listen in? In this course, you will learn how to use quantum effects, such as quantum entanglement and uncertainty, to implement cryptographic tasks with levels of security that are impossible to achieve classically. This interdisciplinary course is an introduction to the exciting field of quantum cryptography, developed in collaboration between QuTech at Delft University of Technology and the California Institute of Technology. By the end of the course you will: - Be armed with a fundamental toolbox for understanding, designing and analyzing quantum protocols. - Understand quantum key distribution protocols. - Understand how untrusted quantum devices can be tested. - Be familiar with modern quantum cryptography – beyond quantum key distribution. This course assumes a solid knowledge of linear algebra and probability at the level of an advanced undergraduate. Basic knowledge of elementary quantum information (qubits and simple measurements) is also assumed, but if you are completely new to quantum information additional videos are provided for you to fill in any gaps. WHAT YOU'LL LEARN - Fundamental ideas of quantum cryptography - Cryptographic concepts and tools: security definitions, the min-entropy, privacy amplification - Protocols and proofs of security for quantum key distribution - The basics of device-independent quantum cryptography - Modern quantum cryptographic tasks and protocols
Views: 9413 edX
Experimental quantum key distribution without monitoring signal disturbance
 
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http://dx.doi.org/10.1038/nphoton.2015.173 Takesue et al. "Experimental quantum key distribution without monitoring signal disturbance." Nature Photonics (2015). doi: 10.1038/nphoton.2015.173 Video produced by Research Square: https://www.researchsquare.com/videos
Views: 1185 Research Square
Quantum Key Distribution
 
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Temasek Foundation Ecosperity is supporting S-Fifteen Pte Ltd to develop tamper-proof terrestrial Quantum Key Distribution devices, including the key generation source (to be used for encryption), detector module, interface module and associated communication protocol software, and commercialise them for use as turnkey services.
SD IEEE VLSI IMPLEMENTATION OF DNA CRYPTOGRAPHY USING QUANTUM KEY EXCHANGE
 
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Quantum Key Distribution: A Conceptual Primer for Online Privacy Enthusiasts
 
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Entanglement and Destructive Reading are two well established quantum principles allowing two online strangers to talk, and transact in total privacy. Unlike the common asymmetric cryptography, quantum privacy is guaranteed by the laws of nature, which unlike the laws of some governments will not be violated by unscrupulous power holders. You owe it to yourself to understand how technology can restore our long lost privacy.
Views: 554 Gideon Samid
Quantum Key Distribution
 
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This Video describes Public Key Encryption, Private Key Encryption, Quantum, Quantum Key Distribution, heisenberg uncertainty principle Whats up: 8800141518 ENVIRONMENT & ECOLOGY Class Structure https://gshindi.com/general-environment-biodiversity-hindu-analysis/environment-ecology-module-12-days-target-upsc-pt-2018 500+ Question https://gshindi.com/objective-questions/500-current-based-prelims-question-hindu-indian-express April Month PIB https://gshindi.com/pib/pib-magazine-april-march-april-current-mcq-2018 YEAR BOOK QUESTION PART 1 https://gshindi.com/hindu-analysis/year-book-2018-economic-survey-question YEAR BOOK QUESTION PART 1 JULY 2017 to March 2018 Topic of Current https://gshindi.com/hindu-analysis-objective-questions/india-year-book-mcq-part-2 https://gshindi.com/hindu-analysis/prelims-notes-july-2017-march-2018-part-1-500-question
Views: 243 The Core
Peter Schwabe on Post Quantum Cryptography - Noisebridge 2016-08-04
 
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Peter Schwabe talks about the future of Post Quantum Cryptograhy, and in particular on his recent collaboration NewHope
Views: 1338 Patrick O'Doherty
Interview Shaheer Niazi at National Science Fair " Quantum key distribution"
 
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17 year old, Shaheer Niazi, is the youngest Pakistani scientist in the world who has won local & international recognition for his work in Physics with the "electric honeycomb"! Pakistan Science club interviewed @M_shaheer_Niazi two year back on the occasion of national science fair 15-16 at Lahore his project was Quantum key distribution
Views: 1326 Pak Science Club
Quantum cryptography: basics and technology with Vadim Makarov
 
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This is a basic introduction into quantum key distribution technology, accessible to undergraduate students and above. The lecture explains society's need for this technology, how quantum cryptography works, shows today's commercial and research hardware, and touches on the question of hacking attacks against it. Download presentation slides: PowerPoint (63 MiB, with videos and animations) http://www.vad1.com/lab/presentations/Makarov-20140930-UWaterloo-phys10-undergrad-seminar.pptx PDF (6.8 MiB, static images only) http://www.vad1.com/lab/presentations/Makarov-20140930-UWaterloo-phys10-undergrad-seminar.pdf This lecture was given at University of Waterloo undergraduate physics seminar (Phys10) on September 30th, 2014. If you are more interested in quantum cryptography technology and have more time, consider watching a longer lecture series by Vadim Makarov: https://www.youtube.com/watch?v=ToOLbdrWst4 Find out more about IQC! Website - https://uwaterloo.ca/institute-for-quantum-computing/ Facebook - https://www.facebook.com/QuantumIQC Twitter - https://twitter.com/QuantumIQC
Network Security - Diffie Hellman Symmetric Key Exchange Protocol
 
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Fundamentals of Computer Network Security This specialization in intended for IT professionals, computer programmers, managers, IT security professionals who like to move up ladder, who are seeking to develop network system security skills. Through four courses, we will cover the Design and Analyze Secure Networked Systems, Develop Secure Programs with Basic Cryptography and Crypto API, Hacking and Patching Web Applications, Perform Penetration Testing, and Secure Networked Systems with Firewall and IDS, which will prepare you to perform tasks as Cyber Security Engineer, IT Security Analyst, and Cyber Security Analyst. course 2 Basic Cryptography and Programming with Crypto API: About this course: In this MOOC, we will learn the basic concepts and principles of cryptography, apply basic cryptoanalysis to decrypt messages encrypted with mono-alphabetic substitution cipher, and discuss the strongest encryption technique of the one-time-pad and related quantum key distribution systems. We will also learn the efficient symmetric key cryptography algorithms for encrypting data, discuss the DES and AES standards, study the criteria for selecting AES standard, present the block cipher operating modes and discuss how they can prevent and detect the block swapping attacks, and examine how to defend against replay attacks. We will learn the Diffie-Hellman Symmetric Key Exchange Protocol to generate a symmetric key for two parties to communicate over insecure channel. We will learn the modular arithmetic and the Euler Totient Theorem to appreciate the RSA Asymmetric Crypto Algorithm, and use OpenSSL utility to realize the basic operations of RSA Crypto Algorithm. Armed with these knowledge, we learn how to use PHP Crypto API to write secure programs for encrypting and decrypting documents and for signing and verify documents. We then apply these techniques to enhance the registration process of a web site which ensures the account created is actually requested by the owner of the email account. Asymmetric Key Cryptography In this module we will learn the modular arithmetic, the Euler Totient Theorm, the RSA Asymmetric Crypto Algorithm, use OpenSSL to realize the basic operations of RSA Crypto Algorithm, and Diffie-Hellman Symmetric Key Exchange Protocol to derive session keys. Learning Objectives • Use Diffi-Hellman algorithm for Key Exchange • Apply RSA with OpenSSL for signing and encryption • Describe RSA Asymmetric Crypto Algorithm Subscribe at: https://www.coursera.org
Views: 107 intrigano
HotPI Debate:  On the unconditional security of quantum key distribution
 
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This debate was held at the conference "Hot Topics in Physical Informatics" (HotPI), November 11th, 2013, Jixian Hotel, Hunan University, Changsha, China. http://www.ece.tamu.edu/~noise/HotPI_2013/HotPI_2013.html The two on the left are Renato Renner (Pro team) and Eleni Diamanti. The moderator is Giacomo Mauro D'Ariano. The two on the right are Vadim Makarov and Horace Yuen (Con team).
Views: 707 henry ho