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Quantum Computing for Computer Scientists
 
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This talk discards hand-wavy pop-science metaphors and answers a simple question: from a computer science perspective, how can a quantum computer outperform a classical computer? Attendees will learn the following: - Representing computation with basic linear algebra (matrices and vectors) - The computational workings of qbits, superposition, and quantum logic gates - Solving the Deutsch oracle problem: the simplest problem where a quantum computer outperforms classical methods - Bonus topics: quantum entanglement and teleportation The talk concludes with a live demonstration of quantum entanglement on a real-world quantum computer, and a demo of the Deutsch oracle problem implemented in Q# with the Microsoft Quantum Development Kit. This talk assumes no prerequisite knowledge, although comfort with basic linear algebra (matrices, vectors, matrix multiplication) will ease understanding. See more at https://www.microsoft.com/en-us/research/video/quantum-computing-computer-scientists/
Views: 87657 Microsoft Research
Ever wonder how Bitcoin (and other cryptocurrencies) actually work?
 
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Bitcoin explained from the viewpoint of inventing your own cryptocurrency. Videos like these made possible by patreon: https://patreon.com/3blue1brown Protocol Labs: https://protocol.ai/ Interested in contributing? https://protocol.ai/join/ Special thanks to the following patrons: http://3b1b.co/btc-thanks Some people have asked if this channel accepts contributions in cryptocurrency form as an alternative to Patreon. As you might guess, the answer is yes :). Here are the relevant addresses: ETH: 0x88Fd7a2e9e0E616a5610B8BE5d5090DC6Bd55c25 BTC: 1DV4dhXEVhGELmDnRppADyMcyZgGHnCNJ BCH: qrr82t07zzq5uqgek422s8wwf953jj25c53lqctlnw LTC: LNPY2HEWv8igGckwKrYPbh9yD28XH3sm32 Supplement video: https://youtu.be/S9JGmA5_unY Music by Vincent Rubinetti: https://soundcloud.com/vincerubinetti/heartbeat Here are a few other resources I'd recommend: Original Bitcoin paper: https://bitcoin.org/bitcoin.pdf Block explorer: https://blockexplorer.com/ Blog post by Michael Nielsen: https://goo.gl/BW1RV3 (This is particularly good for understanding the details of what transactions look like, which is something this video did not cover) Video by CuriousInventor: https://youtu.be/Lx9zgZCMqXE Video by Anders Brownworth: https://youtu.be/_160oMzblY8 Ethereum white paper: https://goo.gl/XXZddT Music by Vince Rubinetti: https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown ------------------ 3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with YouTube, if you want to stay posted on new videos, subscribe, and click the bell to receive notifications (if you're into that). If you are new to this channel and want to see more, a good place to start is this playlist: http://3b1b.co/recommended Various social media stuffs: Website: https://www.3blue1brown.com Twitter: https://twitter.com/3Blue1Brown Patreon: https://patreon.com/3blue1brown Facebook: https://www.facebook.com/3blue1brown Reddit: https://www.reddit.com/r/3Blue1Brown
Views: 2311753 3Blue1Brown
How does HTTPS provide Encryption? | The Curious Engineer
 
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Do you know that your Internet connection can be tapped just like a telephone line? Your conversation with the server can be overhead by anyone who is eavesdropping the connection. Wireless networks are more vulnerable because anyone with the right hardware and software can overhear the packets you're sending to the server. Encryption is the key to solve this problem. HTTPS helps to encrypt your communication with the server. This video simplifies the concept with the help of boxes. ► Website and Social Links Facebook - http://fb.com/thecuriousengineer Twitter - http://twitter.com/thecuriousenggr ► Attribution and Credits | Copyright Stuff Music: Moonlight Hall by Kevin MacLeod http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200095
Views: 34023 TheCuriousEngineer
What is Quantum cryptography?
 
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One of the main reason that i am creating these videos are due to the problems i faced at the time of making presentation, so take the required info from this and make your presentation an informational one. Till now i got so many open source stuff so felt of offering the world so here are the efforts. Thank you I created this video with the YouTube Slideshow Creator (http://www.youtube.com/upload)
Views: 85 Keep Going
Quantum Money from Knots
 
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Google Tech Talk May 24, 2010 ABSTRACT Presented by Edward Farhi. Money, either in the form of bills or information on a computer, should be impossible to copy and also verifiable as good money when tendered to a merchant. Quantum mechanics may make this possible to achieve with far greater security than can be achieved without quantum mechanics. Quantum money is a cryptographic protocol in which a mint can produce a quantum state, no one else can copy the state, and anyone (with a quantum computer) can verify that the state came from the mint without sending the money back to the mint. I will present a concrete quantum money scheme based on quantum superpositions of diagrams that encode knots. This scheme is hopefully secure against computationally bounded adversaries. This may be the basis of E-commerce on a future quantum internet which would not require communication with a central server such as the credit card company, PayPal or Google Checkout. Edward (Eddie) Farhi went to the Bronx High School of Science and Brandeis University before getting his Ph.D. from Harvard in 1978. He was then on the staff at the Stanford Linear Accelerator Center and at CERN in Geneva Switzerland before coming to MIT, where he joined the faculty in 1982. Farhi has given lectures on his own research at many of the major physics research centers in the world. At MIT, he has taught undergraduate courses in quantum mechanics and special relativity. At the graduate level he has taught quantum mechanics, quantum field theory, particle physics and general relativity. Farhi won three teaching awards at MIT and in 2000, 2001, and 2002 he lectured the big freshman physics course, "8.01." In July 2005, he was appointed the Director of MIT's Center for Theoretical Physics.
Views: 6124 GoogleTechTalks
Asymmetric encryption - Simply explained
 
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How does public-key cryptography work? What is a private key and a public key? Why is asymmetric encryption different from symmetric encryption? I'll explain all of these in plain English! 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be 👍🏻 Like my Facebook page: https://www.facebook.com/savjee
Chem 131A. Lec 04. Quantum Principles: Complementarity, Quantum Encryption, Schrodinger Equation
 
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UCI Chem 131A Quantum Principles (Winter 2014) Lec 04. Quantum Principles -- Complementarity, Quantum Encryption, Schrodinger Equation -- View the complete course: http://ocw.uci.edu/courses/chem_131a_quantum_principles.html Instructor: A.J. Shaka, Ph.D License: Creative Commons BY-NC-SA Terms of Use: http://ocw.uci.edu/info. More courses at http://ocw.uci.edu This course provides an introduction to quantum mechanics and principles of quantum chemistry with applications to nuclear motions and the electronic structure of the hydrogen atom. It also examines the Schrödinger equation and study how it describes the behavior of very light particles, the quantum description of rotating and vibrating molecules is compared to the classical description, and the quantum description of the electronic structure of atoms is studied. Quantum Principles (Chem 131A) is part of OpenChem: http://ocw.uci.edu/collections/open_chemistry.html This video is part of a 28-lecture undergraduate-level course titled "Quantum Principles" taught at UC Irvine by A.J. Shaka, Ph.D. Recorded on January 17, 2014. Index of Topics: 0:00:20 Localized Wavfunctions 0:11:30 Fourier Series 0:13:21 Quantum cryptography 0:28:32 Time Evolution 0:47:22 A Free Particle Required attribution: Shaka, A.J. Quantum Principles 131A (UCI OpenCourseWare: University of California, Irvine), http://ocw.uci.edu/courses/chem_131a_quantum_principles.html. [Access date]. License: Creative Commons Attribution-ShareAlike 3.0 United States License. (http://creativecommons.org/licenses/by-sa/3.0/us/deed.en_US).
Views: 3342 UCI Open
What is Encryption and How Does it Work? | Mashable Explains
 
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Encryption & decryption technology protects your e-mails, banking transactions, and even those questionable Etsy purchases. So how does it work, exactly? Hey, Mashable Explains is back! We've got new episodes coming to you every Thursday, so make sure to subscribe! http://on.mash.to/subscribe Sorry, you’re addicted to the Internet https://www.youtube.com/watch?v=NpluiONwJLg Why do we love Snapchat so much? https://www.youtube.com/watch?v=rZln9XNTOtw MASHABLE ON YOUTUBE Subscribe to Mashable: http://on.mash.to/subscribe Mashable Explains Playlist: https://www.youtube.com/playlist?list=PLSKUhDnoJjYn0TV9V84C4Wr2DjKPc492c MASHABLE ACROSS THE WEB Mashable.com: http://on.mash.to/1hCcRpl Facebook: http://on.mash.to/1KkCTIP Twitter: http://on.mash.to/1Udp1kz Tumblr: http://on.mash.to/1NBBijY Instagram: http://on.mash.to/1U6D40z Google+: http://on.mash.to/1i27L5R Mashable is a leading global media company that informs, inspires and entertains the digital generation.
Views: 98831 Mashable
Internet of Things Problems - Computerphile
 
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A hacked car that could kill you should be more worrying than a thousand lightbulbs taking Facebook offline. University of Cambridge's Professor Ross Anderson explains why safety should be higher on the agenda than privacy. SHA: Secure Hashing Algorithm: https://youtu.be/DMtFhACPnTY Data Harvesting: https://youtu.be/2lEhamPHh3k Golden Key - FBI vs Apple iPhone: https://youtu.be/6RNKtwAGvqc http://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: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 122834 Computerphile
Symmetric Key and Public Key Encryption
 
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Modern day encryption is performed in two different ways. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Using the same key or using a pair of keys called the public and private keys. This video looks at how these systems work and how they can be used together to perform encryption. Download the PDF handout http://itfreetraining.com/Handouts/Ce... Encryption Types Encryption is the process of scrambling data so it cannot be read without a decryption key. Encryption prevents data being read by a 3rd party if it is intercepted by a 3rd party. The two encryption methods that are used today are symmetric and public key encryption. Symmetric Key Symmetric key encryption uses the same key to encrypt data as decrypt data. This is generally quite fast when compared with public key encryption. In order to protect the data, the key needs to be secured. If a 3rd party was able to gain access to the key, they could decrypt any data that was encrypt with that data. For this reason, a secure channel is required to transfer the key if you need to transfer data between two points. For example, if you encrypted data on a CD and mail it to another party, the key must also be transferred to the second party so that they can decrypt the data. This is often done using e-mail or the telephone. In a lot of cases, sending the data using one method and the key using another method is enough to protect the data as an attacker would need to get both in order to decrypt the data. Public Key Encryption This method of encryption uses two keys. One key is used to encrypt data and the other key is used to decrypt data. The advantage of this is that the public key can be downloaded by anyone. Anyone with the public key can encrypt data that can only be decrypted using a private key. This means the public key does not need to be secured. The private key does need to be keep in a safe place. The advantage of using such a system is the private key is not required by the other party to perform encryption. Since the private key does not need to be transferred to the second party there is no risk of the private key being intercepted by a 3rd party. Public Key encryption is slower when compared with symmetric key so it is not always suitable for every application. The math used is complex but to put it simply it uses the modulus or remainder operator. For example, if you wanted to solve X mod 5 = 2, the possible solutions would be 2, 7, 12 and so on. The private key provides additional information which allows the problem to be solved easily. The math is more complex and uses much larger numbers than this but basically public and private key encryption rely on the modulus operator to work. Combing The Two There are two reasons you want to combine the two. The first is that often communication will be broken into two steps. Key exchange and data exchange. For key exchange, to protect the key used in data exchange it is often encrypted using public key encryption. Although slower than symmetric key encryption, this method ensures the key cannot accessed by a 3rd party while being transferred. Since the key has been transferred using a secure channel, a symmetric key can be used for data exchange. In some cases, data exchange may be done using public key encryption. If this is the case, often the data exchange will be done using a small key size to reduce the processing time. The second reason that both may be used is when a symmetric key is used and the key needs to be provided to multiple users. For example, if you are using encryption file system (EFS) this allows multiple users to access the same file, which includes recovery users. In order to make this possible, multiple copies of the same key are stored in the file and protected from being read by encrypting it with the public key of each user that requires access. References "Public-key cryptography" http://en.wikipedia.org/wiki/Public-k... "Encryption" http://en.wikipedia.org/wiki/Encryption
Views: 452929 itfreetraining
Breaking ECDSA (Elliptic Curve Cryptography) - rhme2 Secure Filesystem v1.92r1 (crypto 150)
 
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We are going to recover a ECDSA private key from bad signatures. Same issue the Playstation 3 had that allowed it to be hacked. -------------------------------------- Twitter: https://twitter.com/LiveOverflow Website: http://liveoverflow.com/ Subreddit: https://www.reddit.com/r/LiveOverflow/
Views: 27010 LiveOverflow
22. Cryptography: Encryption
 
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MIT 6.046J Design and Analysis of Algorithms, Spring 2015 View the complete course: http://ocw.mit.edu/6-046JS15 Instructor: Srinivas Devadas In this lecture, Professor Devadas continues with cryptography, introducing encryption methods. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 15869 MIT OpenCourseWare
Multi-Party Computation: From Theory to Practice
 
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Google Tech Talk 1/8/13 Presented by Nigel P. Smart ABSTRACT Multi-Party Computation (MPC) allows, in theory, a set of parties to compute any function on their secret input without revealing anything bar the output of the function. For many years this has been a restricted to a theoretical tool in cryptography. However, in the past five years amazing strides have been made in turning theory into practice. In this talk I will present the latest, practical, protocol called SPDZ (Speedz), which achieves much of its performance advantage from the use of Fully Homomorphic Encryption as a sub-procedure. No prior knowledge of MPC will be assumed. Speaker Info University of Bristol, U.K.
Views: 8994 GoogleTechTalks
How Does Monero Work?
 
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Monero is a cryptocurrency that enables private transactions. That means the sender, receiver, and transaction amount are not publicly viewable, unlike Bitcoin's blockchain. Monero's transactions stay private using the technology of ring signatures, ringCT, stealth addresses, and I2P routing. I'll explain how all of this works in this video. I do not condone the use of this technology for illegal transactions. This is powerful stuff, ideally, we start using this as a stepping stone towards a world where we get paid for our transactional data (and all the rest of our data). You'll find the jupyter notebook for this video and the associated code that I demo in the github link below. Code for this video: https://github.com/llSourcell/how_does_monero_work More learning resources: https://getmonero.org/ https://github.com/monero-project/monero https://www.monero.how/tutorial-how-to-use-the-monero-gui-wallet https://www.monero.how/tutorial-how-to-mine-monero https://99bitcoins.com/beginners-guide-to-monero/ Please Subscribe! And like. And comment. That's what keeps me going. Want more inspiration & education? Connect with me: Twitter: https://twitter.com/sirajraval Facebook: https://www.facebook.com/sirajology Instagram: https://www.instagram.com/sirajraval/ Join us in the Wizards Slack channel: http://wizards.herokuapp.com/ And please support me on Patreon: https://www.patreon.com/user?u=3191693 Signup for my newsletter for exciting updates in the field of AI: https://goo.gl/FZzJ5w
Views: 71117 Siraj Raval
2.4.1 RSA Public Key Encryption: Video
 
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MIT 6.042J Mathematics for Computer Science, Spring 2015 View the complete course: http://ocw.mit.edu/6-042JS15 Instructor: Albert R. Meyer License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 16904 MIT OpenCourseWare
The Internet: Encryption & Public Keys
 
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Mia Epner, who works on security for a US national intelligence agency, explains how cryptography allows for the secure transfer of data online. This educational video explains 256 bit encryption, public and private keys, SSL & TLS and HTTPS. Learn more at http://code.org/ Help us translate into your language: http://code.org/translate/videos Stay in touch with us! • on Twitter https://twitter.com/codeorg • on Facebook https://www.facebook.com/Code.org • on Instagram https://instagram.com/codeorg • on Tumblr https://blog.code.org • on LinkedIn https://www.linkedin.com/company/code... • on Google+ https://google.com/+codeorg Help us caption & translate this video! https://amara.org/v/HGaS/
Views: 202945 Code.org
David Mazières: "The Stellar Consensus Protocol" | Talks at Google
 
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David Mazières: "The Stellar Consensus Protocol: A Federated Model for Internet-level Consensus" This talk presents federated Byzantine agreement (FBA), a generalization of the standard Byzantine agreement problem. Unlike traditional Byzantine agreement--which presupposes unanimous agreement on system membership--the FBA model grants organizations individual control over whom to trust, allowing membership to grow organically out of pairwise relationships between participants. Compared to proof-of-work and proof-of-stake, two other decentralized alternatives to Byzantine agreement, FBA enables far more efficient constructions with greater margins of computational security. The talk further presents the Stellar consensus protocol (SCP), the first FBA protocol. SCP forms the backbone of the Stellar payment network, where it secures financial transactions. Other potential applications include secure timestamping and strengthening certificate transparency.
Views: 30409 Talks at Google
Empowering the quantum revolution with Q# : Build 2018
 
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Quantum computing takes a giant leap forward from today’s technology—one that will forever alter our economic, industrial, academic, and societal landscape. This has massive implications for your customers in any industry including healthcare, energy, environmental systems, smart materials, and more. Learn how Microsoft is taking a unique revolutionary approach to quantum and how your customers can get started developing quantum solutions with the Quantum Development Kit. Create a Free Account (Azure): https://aka.ms/c9-azurefree
Views: 2283 Microsoft Developer
Episode 08: Quantum Safe Bike Watches
 
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The Magical Crypto Friends Show Episode 08: Quantum Safe Bike Watches In this episode we discuss the following topics: - Magical Crypto Conference - Riccardo's watch obsession - Quantum Resistance for Cryptocurrencies - 51% attacks on coins - Zooko's proof of eyes - Tari Got questions you want us to answer? Got topics you want us to discuss? Put them in the comments below, or Tweet at @magicalcrypto. If you're feeling generous and would like to see more cool content feel free to donate something: Bitcoin: 3NQms9Mw41QzRiLUeHqcQmw4KGffxbeM3X Litecoin: MFpH1fECensznUE79XBBqnKUKFd58KGtQF Monero: 48mcfqHkbXhM4H14W5ztC2KBfRprtEp85aQPJaqLnPLTAJ53xQJhPxEJYigcHhrF9NafPK5T3UvokQjhDMqVqGvCNMRHgZ4 Bcash: ROFL All donations will be used for the further development of the show.
Views: 18716 Magical Crypto Friends
How IOTA Works
 
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What is IOTA? The Tangle? IOTA is an open-source distributed ledger protocol just like other common platforms like bitcoin and ethereum. But IOTA goes 'beyond block chain' through its core invention of the block-less & chain-less ‘Tangle’. The IOTA Tangle is a quantum-proof Directed Acyclic Graph, with no fees on transactions & no fixed limit on how many transactions can be confirmed per second in the network. Instead, throughput grows in conjunction with activity in the network; the more activity, the faster the network. Unlike block chain architecture, IOTA has no separation between users and validators; rather, validation is an intrinsic property of using the ledger, thus avoiding centralization. IOTA is initially focused on serving as the backbone of the emerging Internet-of-Things (IoT).
Meet The Innovators Under 35 (2016) - Joseph Fitzsimons
 
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About Joseph Fitzsimons: Joseph Fitzsimons is an Assistant Professor at Singapore University of Technology and Design and at the Centre for Quantum Technologies. He currently leads the Quantum Theory and Information group at SUTD, a multi-disciplinary research group composed of physicists and computer scientists focused on exploiting quantum phenomenon for information processing. His current research primarily focuses on developing quantum cryptographic protocols to enhance privacy in secure computation. Dr Fitzsimons received his doctorate from Oxford University in 2007, and subsequently spent three years as a fellow of Merton College before moving to Singapore in 2010. He is currently a National Research Foundation Fellow. Secure Computation in a Quantum World: One of the great insights in physics in the late twentieth century was that information and computation were inextricably linked to it. Quantum mechanics, in particular, offers a more powerful model of computation than is possible with conventional hardware. In recent years, technological barriers have begun to fall away, opening up a path to large-scale quantum computing. Quantum technologies offer the promise of not only more efficient computation, but also stronger cryptography. This talk will introduce recently discovered quantum cryptographic protocols for maintaining privacy and ensuring integrity of computation performed on untrusted hardware. Innovators Under 35 is the most prestigious recognition worldwide from MIT Technology Review. Submit your nominations to the Asia Pacific list at http://www.emtechasia.com/innovatorsunder35 Watch more EmTech Asia videos here: https://bit.ly/2r0DKup Subscribe to the EmTech Asia channel at https://bit.ly/2r6kfjl
Views: 329 EmTech Asia
Theory and Practice of Cryptography
 
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Google Tech Talks December, 19 2007 Topics include: Introduction to Modern Cryptography, Using Cryptography in Practice and at Google, Proofs of Security and Security Definitions and A Special Topic in Cryptography This talk is one in a series hosted by Google University: Wednesdays, 11/28/07 - 12/19/07 from 1-2pm Speaker: Steve Weis Steve Weis received his PhD from the Cryptography and Information Security group at MIT, where he was advised by Ron Rivest. He is a member of Google's Applied Security (AppSec) team and is the technical lead for Google's internal cryptographic library, KeyMaster.
Views: 69998 GoogleTechTalks
Introduction to Bitcoin with Yours Bitcoin, Lecture 3: Elliptic Curves
 
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A course on how bitcoin works and how to program bitcoin stuff with the javascript bitcoin library Yours Bitcoin. Taught by Ryan X. Charles, Cofounder & CEO of Yours, and former cryptocurrency engineer of reddit. The third lecture covers elliptic curves and in particular secp256k1, the curve used by bitcoin. This curve is used for public keys and ECDSA, the digital signature algorithm of bitcoin. https://github.com/yoursnetwork/yours-bitcoin https://github.com/yoursnetwork/yours-bitcoin-examples https://www.yours.network https://www.ryanxcharles.com/ https://twitter.com/ryanxcharles
Views: 757 Yours
What is an Initial Coin Offering?
 
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Let's cut through the hype and understand Initial Coin Offerings (ICOs) by creating one ourselves programmatically! We'll first learn about Bitcoin & Ethereums architecture to prepare us for the smart contract creation process. Our DemoCoin ICO will be built using tools from the Ethereum developer ecosystem. Code for this video: https://github.com/llSourcell/what_is_an_initial_coin_offering Alberto's Winning Code: https://github.com/alberduris/The_Math_of_Intelligence/tree/master/Week10 Eric's 2nd place Code: https://github.com/EricAlcaide/Math_of_Intelligence/tree/master/Quantum_Computing Please Subscribe! And like. And comment. More learning resources: https://medium.com/startup-grind/hack-your-funding-with-an-initial-coin-offering-2a2a0614bddf https://blog.zeppelin.solutions/how-to-create-token-and-initial-coin-offering-contracts-using-truffle-openzeppelin-1b7a5dae99b6 https://bitsonblocks.net/2017/04/25/a-gentle-introduction-to-initial-coin-offerings-icos/ https://blockchainhub.net/ico-initial-coin-offerings/ https://medium.com/@mvmurthy/full-stack-hello-world-voting-ethereum-dapp-tutorial-part-1-40d2d0d807c2 https://medium.com/@ConsenSys/a-101-noob-intro-to-programming-smart-contracts-on-ethereum-695d15c1dab4 https://www.ethereum.org/greeter I wrote a book on this stuff last year (most of the code is now deprecated since the space moves very fast, but the theories still hold true) so I'm very excited to see this space finally coming to fruition: http://shop.oreilly.com/product/0636920039334.do Join us in the Wizards Slack channel: http://wizards.herokuapp.com/ And please support me on Patreon: https://www.patreon.com/user?u=3191693 Follow me: Twitter: https://twitter.com/sirajraval Facebook: https://www.facebook.com/sirajology Instagram: https://www.instagram.com/sirajraval/ Instagram: https://www.instagram.com/sirajraval/ Signup for my newsletter for exciting updates in the field of AI: https://goo.gl/FZzJ5w
Views: 113278 Siraj Raval
Theory and Practice of Cryptography
 
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Google Tech Talks November, 28 2007 Topics include: Introduction to Modern Cryptography, Using Cryptography in Practice and at Google, Proofs of Security and Security Definitions and A Special Topic in Cryptography This talk is one in a series hosted by Google University: Wednesdays, 11/28/07 - 12/19/07 from 1-2pm Speaker: Steve Weis Steve Weis received his PhD from the Cryptography and Information Security group at MIT, where he was advised by Ron Rivest. He is a member of Google's Applied Security (AppSec) team and is the technical lead for Google's internal cryptographic library, KeyMaster.
Views: 112160 GoogleTechTalks
What is MimbleWimble? (incl. Grin)
 
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In this video, we explore MimbleWimble - the blockchain scaling proposal that helps reduce blockchain size while also offering private transactions. We also talk about the first reference implementation of MimbleWimble being developed, Grin. ### Find the video helpful? ### Support my work and get access to exclusive perks on Patreon: https://www.patreon.com/ummjackson ### Follow me on Twitter ### https://twitter.com/ummjackson ### Links on topics mentioned ### MimbleWimble text file: https://download.wpsoftware.net/bitcoin/wizardry/mimblewimble.txt Grin implementation home page: http://grin-tech.org/ Grin explained for Bitcoiners: https://github.com/mimblewimble/grin/blob/master/doc/grin4bitcoiners.md Andrew Poelstra's follow up paper on MW: https://download.wpsoftware.net/bitcoin/wizardry/mimblewimble.pdf ### Follow me on Twitter ### https://twitter.com/ummjackson Music: https://soundcloud.com/aka-dj-quads/dope
Views: 10958 Jackson Palmer
Recover RSA private key from public keys - rhme2 Key Server (crypto 200)
 
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Using the greatest common divisor (GCD) to factorize the public modulo into the secret primes, so we can forge a RSA signature. Source for the rhme2 challenges: https://github.com/Riscure/Rhme-2016 -------------------------------------- Twitter: https://twitter.com/LiveOverflow Website: http://liveoverflow.com/ Subreddit: https://www.reddit.com/r/LiveOverflow/
Views: 36953 LiveOverflow
FileMaker Videos | FileMaker SSL Certificate Network Encryption Security
 
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FileMaker Videos | FileMaker SSL Certificate Network Encryption Security http://youtu.be/gvJ8ebpqo_Q Download the FileMaker Pro 13 & FileMaker Go 13 Training Videos at http://www.learningfilemaker.com Please Visit Our Channel: https://www.youtube.com/user/FileMakerVideos Please Subscribe While There FileMaker Inc. has recently changed their recommendation on SSL Point-to-Point Encryption for your FileMaker databases. Claus Lavendt (of DataManix) shares his expertise on the topic. Download DataManix's free FileMaker Certificate Install Guide & Tool http://www.datamanix.com/downloads/ Richard Carlton Consulting, Inc. provides customized database development services for business, government, and non-profit organizations. Our core competency is FileMaker Pro, where we hold FileMaker's highest certifications. With a team of 27 staff, we are capable of deploying both small and large solutions for a wide variety of customers. We service all modern versions of FileMaker Pro, FileMaker Server, and FileMaker Go (for the iPad and iPhone). We also deploy FileMaker databases to the web, and offer PHP/Web Development, iOS Programming, FileMaker Server Support, and Hosting Services. http://www.rcconsulting.com/ Please feel free to contact us at [email protected] Please Comment, Like & Share All of Our Videos Feel Free to Embed any of Our Videos on Your Blog or Website Follow Us On Your Favorite Social Media https://www.facebook.com/FileMakerVideos https://twitter.com/filemakervideos https://plus.google.com/+FileMakerVideos/videos
The Lazy Programmer's Guide to Secure Computing
 
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Google Tech Talk March 11, 2010 ABSTRACT Presented by Marc Stiegler. This presentation starts with a simple block of code written by the Lazy Programmer, to observe how laziness made the code more compact and simpler. We then define the Principle of Least Authority(POLA), and explain why it is a best practice for secure programming. We show how laziness in that first example enabled enforcement of POLA. We then put the Lazy Programmer through a series of increasingly more difficult tasks as management attempts to make the Lazy Programmer work hard. To achieve maximum laziness, the Lazy Programmer is driven toward increasingly more modular, encapsulating OO designs that happen to implement POLA; ultimately compelled to build systems with defense in depth to avoid work. A secret truth is thus revealed: lazy OO programmers have been using secure techniques for decades, if only they had known. We then describe the tools that turn laziness into correctly enforced security for JavaScript, Java, and distributed computing. Marc Stiegler is a researcher at Hewlett-Packard Labs who has written "Introduction to Capability Based Security," and designed CapDesk and Polaris, a windows overlay that isolates applications from one another to allow virus safe computing.
Views: 60337 GoogleTechTalks
What is Token Security Scheme?
 
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Token Security Scheme (TSS) aims to address the existing security gaps in the crypto-currencies eco-system and prevent attacks on any exchange or facility storing such digital assets. Contribute towards the platform and get your tokens: https://www.tsstoken.com/tokensale.php Learn more : https://www.tsstoken.com Whitepaper : http://bit.ly/TSSWhitepaper Facebook Page: https://www.facebook.com/tsstoken Twitter : https://twitter.com/tsstoken Bounty Program: https://bitcointalk.org/index.php?topic=2243112 Telegram : http://www.t.me/tsstoken Making Blockchain Safer for Everyday Use.
Ep. #563- Chats With Pierre: All About Nootropics  / Think & Grow Rich Works
 
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❗Follow Pierre's Journey: https://www.youtube.com/watch?v=AoHh_GK0MLA&feature=youtu.be 👍 Thank You Very Much For Watching! 😃 Please Remember To Like & Subscribe! 🚩Join The Crypt0's News Group: https://www.facebook.com/groups/crypt0snews 🚩Become A Patron or Sponsor: https://www.patreon.com/crypt0snews 🚩10% Off Your Anarchapulco Conference Tickets (Purchased After August 30th): Enter Promo Code "crypt0" https://anarchapulco.com/?ref=crypt0 ►🌐Find Us on Steemit (Decentralized Social Media Blockchain): https://goo.gl/K3pQD4 ►🚀Crypt0's Live Streaming Channel: https://goo.gl/xRgnzs 👕👚Grab Some Ethereum Shirts: ►Deep Space Diamond Tee Shirt http://amzn.to/2tUfwkn ►Prism Rainbow Light T Shirt http://amzn.to/2t19DoD ►💎Donate Ether and Ethereum-Based (ERC-20) Tokens 0x97f32d97D6Ce4dee3429279F04D5b96Aba7C969B ►💎Donate Bitcoin 17nFpuYFBxjtGbXgoMbyFGFHemkC5ayz6D ►💎Donate Using Paypal https://goo.gl/7m1X4Z 📔___RECOMMENDED READING ►Ethereum: Blockchains, Digital Assets, Smart Contracts, DAOs http://amzn.to/2t015ik ►The Singularity Is Near: When Humans Transcend Biology http://amzn.to/2rHXGjQ ►Physics of the Future: How Science Will Shape Human Destiny and Our Daily Lives by the Year 2100 http://amzn.to/2tUaEfa ►The Creature From Jekyll Island http://amzn.to/2sWZLfa ►Think and Grow Rich - Napoleon Hill: http://amzn.to/2t1nHOT ►📺Introduction to Cryptocurrency Playlist: https://goo.gl/YZTwvc ►🔗Learn More About Blockchain (Deutche, Please Translate): https://goo.gl/492XVJ 🔑__A MUST HAVE__ ►Ledger Nano S (Bitcoin+Ethereum+More Hardware Wallet): https://goo.gl/wZUVES ►Hardware Wallet Superstore (5$ Off) https://goo.gl/ftZL3w ►✏️Easily Create Your Own Website (10% Off Weebly): https://goo.gl/ZqJvue ►✅Exchange Cryptocurrency At The Best Rate: https://goo.gl/q5FNoJ 💻FOLLOW US HERE: ►Instagram: https://goo.gl/vDRvgK ►Twitter: https://goo.gl/bR9gA8 ►Snapchat: minamarie0012 ►Crypt0's News Official Site: https://goo.gl/mnWvPL -~-~~-~~~-~~-~- Please watch: "Cryptocurrency- An Introduction: Featuring Elle & Crypt0! (Basics, Tips, Resources, & Much More!)" https://www.youtube.com/watch?v=h9B52U6tsvo -~-~~-~~~-~~-~-
Views: 4081 Crypt0
Satellite communication encryption challenge.
 
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In past was proved practical way to check strength of the encryption algorithms by setting the challenger via offering money for attempts to break encryption key. I.e. see old "RSA factoring challenge" with prices up 100,000$ per breaking of algorithms used in HTTPS protocols. We did set first challenger for our TOTAL encryption as 10 Lunar == 2030$. And nobody was able to decrypt message in 1.5 month in a case when source code was in open-source domain. It mean that strength of our satellite communication encryption is higher than 2000$. Let's do check again, but now with 100 Lunaro sterlings, which is equal to 20,000$. Decrypt published message before November 10, 2013 and get that money. Details, source code are on https://github.com/alexdobrianski/TOTAL_ENCRYPTION Чтобы проветить возможностьи алгиритма крипторафирования на практике, применяется стандартный трюк - алгоритм публикуется вместе с неким зашифрованным сообщением. За расшифровку сообщения (нахождения ключа) предлагаются деньги. Лаборатория RSA криптования например с 1991 по 2007 год предлагала различные суммы до 100,000$ за взлом 1024 битного ключа. Так как никто, за месяц, не смог расшифровать сообщение в нашем алгиритме криптования спутниковой коммуникации за 2000 долларов (извиняюсь 10 лунаро стерлингов), то опубликованный алгиритм "дороже" 2000. Продолжим проверку алгоритма - объявление от 10 октября 2013 года - кто расшифрует опубликованное сообщение до 10 ноября 2013, Team PlanB выплачивает 100 лунных стерлингов, что в эквиваленте 20,000$ детали - https://github.com/alexdobrianski/TOTAL_ENCRYPTION
Views: 525 Alex Dobrianski
This Video was Not Encrypted with RSA | 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 Learn through active problem-solving at Brilliant: https://brilliant.org/InfiniteSeries/ Last episode we discussed Symmetric cryptography https://www.youtube.com/watch?v=NOs34_-eREk Here we break down Asymmetric crypto and more. Tweet at us! @pbsinfinite Facebook: facebook.com/pbsinfinite series Email us! pbsinfiniteseries [at] gmail [dot] com Previous Episode (Almost) Unbreakable Crypto | Infinite Series https://www.youtube.com/watch?v=NOs34_-eREk How To Break Cryptography https://www.youtube.com/watch?v=12Q3Mrh03Gk&list=PLa6IE8XPP_gnot4uwqn7BeRJoZcaEsG1D&index=2 Last time, we discussed symmetric encryption protocols, which rely on a user-supplied number called "the key" to drive an algorithm that scrambles messages. Since anything encrypted with a given key can only be decrypted with the same key, Alice and Bob can exchange secure messages once they agree on a key. But what if Alice and Bob are strangers who can only communicate over a channel monitored by eavesdroppers like Eve? How do they agree on a secret key in the first place? 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 and Yana Chernobilsky who are supporting us on Patreon at the Identity level! And thanks to Nicholas Rose and Mauricio Pacheco who are supporting us at the Lemma level!
Views: 55449 PBS Infinite Series
(Almost) Unbreakable Crypto | 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 Despite what many believe, the essence of encryption isn’t really about factoring or prime numbers. So what is it about? Thanks to Vanessa Hill for playing the part of our evil hacker! Be sure to check out Braincraft https://www.youtube.com/channel/UCt_t6FwNsqr3WWoL6dFqG9w Tweet at us! @pbsinfinite Facebook: facebook.com/pbsinfinite series Email us! pbsinfiniteseries [at] gmail [dot] com Previous Episode Associahedra: The Shapes of Multiplication | Infinite Series https://www.youtube.com/watch?v=N7wNWQ4aTLQ In previous episodes, Kelsey explained how you could crack RSA encryption with an algorithm capable of quickly factoring ginormous numbers into primes. That might give you the impression that fast factoring algorithms would compromise all digital encryption. But not so -- for instance, YouTube's encryption of this video would be unaffected. And that's because the essence of encryption isn’t really about factoring or prime numbers per se. So what is it about? 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 and Yana Chernobilsky who are supporting us on Patreon at the Identity level! And thanks to Nicholas Rose and Mauricio Pacheco who are supporting us at the Lemma level!
Views: 73020 PBS Infinite Series
Jacob Appelbaum at University of Luxembourg talking about Tor anonymity network and censorship
 
01:50:12
Abstract: Are you interested in how governments and corporations attempt to censor access to the Tor network? Wonder what protocol fingerprints are actually used as protocol distinguishers? This talk will cover some real world examples that the Tor network faces and it will discuss deployed solutions; hopefully we'll have lots of room for discussion for future development. Jacob Appelbaum (@ioerror, http://en.wikipedia.org/wiki/Jacob_Appelbaum ) is a renowned independent internet security professional, accomplished photographer, software hacker and world traveller. A developer for The Tor Project, Appelbaum trains interested parties globally on how to effectively use and contribute to the Tor network. Since its initial release, Tor has enabled roughly 36 million people around the world to experience freedom of access and expression on the Internet while keeping them in control of their privacy and anonymity. Its network has proved pivotal in dissident movements in both Iran and more recently Egypt. A driving force in the team behind the creation of the Cold Boot Attacks, Appelbaum won both the Pwnie for Most Innovative Research award and the Usenix Security best student paper award in 2008. Additionally, he was part of the MD5 Collisions Inc. team that created a rogue CA certificate by using a cluster of 200 PlayStations funded by the Swiss taxpayers. The "MD5 considered harmful today" research was awarded the best paper award at CRYPTO 2009. He is also a staff research scientist at the University of Washington Security and Privacy lab. Appelbaum is also a founding member of the hacklab Noisebridge in San Francisco where he indulges his interests in magnetics, cryptography and consensus based governance.
Views: 4192 CIRCL Luxembourg
DEF CON 21 - Phorkus and Evilrob - Doing Bad Things to 'Good' Security Appliances
 
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Doing Bad Things to 'Good' Security Appliances PHORKUS (MARK CAREY) CHIEF SCIENTIST, PEAK SECURITY EVILROB (ROB BATHURST) THAT GUY The problem with security appliances is verifying that they are as good as the marketing has lead you to believe. You need to spend lots of money to buy a unit, or figure out how to obtain it another way; we chose eBay. We now have a hardened, encrypted, AES 256 tape storage unit and a mission, break it every way possible! We're going to dive into the finer points of the pain required to actually evaluate and disassemble a harden security appliance. We'll be delving into such fun topics as epoxy melting, de-soldering, ROM chip reading, FGPA configuration recreation, Verilog decoding, recovering the various key strands that keep the device/data secure, and any other topics we end up straying into. Phorkus (Mark Carey) (@PeakSec) is a professional Security Engineer with over 18 years of experience in the areas of Information Technology, Rapid Development Lifecycle, Long Term Development Lifecycle, Computer Security, and Research/Development Innovation. He is a partner in Peak Security Inc (www.peaksec.com) where he serves as a Principal Security Consultant and Chief Scientist. Mark has developed many security tools used throughout the corporate and government sectors. Mark has co-authored Network Auditing with Nessus (second edition), and has published internal white-papers for many government agencies. Facebook Evilrob (Rob Bathurst) is a Security and Network Engineer with over 12 years of experience with large multi-national network architecture and security engineering. His focus is on network security architecture, tool development, and high-assurance device reverse engineering. Rob has published multiple internal corporate and government whitepapers across multiple security domains, written a book on Hacking OS X, and is currently working on his Master's Degree at the University of Oxford. Materials: https://www.defcon.org/images/defcon-21/dc-21-presentations/Phorkus-Evilrob/DEFCON-21-Phorkus-Evilrob-Hacking-Embedded-Devices-Bad-things-to-Good-hardware.pdf
Views: 4462 DEFCONConference
Blockchain Consensus Algorithms and Artificial Intelligence
 
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Is blockchain + AI a winning combo? Yes! They are complementary technologies, and knowing how both work will make you a much more powerful developer. Artificial Intelligence can use the power of the blockchain to audit data, add incentives to its goals, and even create new types of meritocratic organizations. In this video, i'll talk about how they can both work together, code out the proof of work algorithm in python, then talk about a few other consensus algorithms at a high level. Code for this video: https://github.com/llSourcell/blockchain_consensus Please Subscribe! And like. And comment. That's what keeps me going. Follow me: Twitter: https://twitter.com/sirajraval Facebook: https://www.facebook.com/sirajology More Learning Resources: https://blog.bigchaindb.com/blockchains-for-artificial-intelligence-ec63b0284984 https://www.topbots.com/combination-ai-blockchain-revolutionize-10-industries/ https://blog.oceanprotocol.com/from-ai-to-blockchain-to-data-meet-ocean-f210ff460465 https://www.slideshare.net/bicalabs/artificial-intelligence-blockchain-synergy https://blog.ethereum.org/2014/05/06/daos-dacs-das-and-more-an-incomplete-terminology-guide/ https://bitcoinmagazine.com/articles/bootstrapping-a-decentralized-autonomous-corporation-part-i-1379644274/ https://www.wired.com/2016/06/50-million-hack-just-showed-dao-human/ Join us in the Wizards Slack channel: http://wizards.herokuapp.com/ And please support me on Patreon: https://www.patreon.com/user?u=3191693 Instagram: https://www.instagram.com/sirajraval/ Instagram: https://www.instagram.com/sirajraval/ Signup for my newsletter for exciting updates in the field of AI: https://goo.gl/FZzJ5w
Views: 41840 Siraj Raval
John Preskill: Quantum Computing and the Entanglement Frontier
 
01:10:42
John Preskill visited Google LA to speak about "Quantum Computer and the Entanglement Frontier." This talk took place on September 25, 2013
Views: 42246 GoogleTechTalks
Blockchain Ask Me Anything with Jae Yang Blockchain Engineer Metal Pay
 
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The first session covers basics of the technology behind blockchain and cryptocurrencies. This session will help you understand cryptocurrency payments and settlements. We'll cover how cryptocurrencies work, highlighting strengths as well as major weaknesses and potential risks. The first session will also cover major differences between some of the top cryptocurrencies; the difference between Bitcoin, Ethereum, Litecoin, and others like Monero. You will walk away with sufficient technical background to dive deeper on your own and to better know what you don't know. This will be a highly interactive Q&A format so you can ask your questions as they arise. Jae Yang, Blockchain Engineer Metal Pay Jae started out as an aerospace engineer. He is passionate about cryptocurrencies and blockchain technology He is active in the cryptocurrency community, often explaining technical details to newcomers. Most recently, Jae worked for Samsung SmartThings, helping the company setup various microservices. In his spare time, Jae develops various open source software in Node.js and is an avid reader. For further info check out http://www.fintechsv.com
Chinese Scientists Successfully TELEPORT a Photon to SPACE!
 
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Scientists in China managed to teleport a photon from Earth to a satellite that is over 300 miles away from us in space. Get tickets to the best show on earth!!! http://bit.ly/2skdZ9n ►Subscribe for more videos! http://bit.ly/1Mo6FxX ►Check out my food channel! http://bit.ly/1hsxh41 ★↓FOLLOW ME ON SOCIAL MEDIA!↓★ Facebook Show Page: https://www.facebook.com/beyondsciencetv Facebook Mike Fan Page: http://on.fb.me/1En9Lue Instagram: http://instagr.am/Mikexingchen http://instagr.am/beyondsciencetv Twitter: http://twitter.com/Mikexingchen Snapchat: Mikeychenx Periscope: Mikexingchen ~Send stuff at our PO Box! Mike Chen PO Box 610 Middletown, NY 10940 ------------------------
Views: 291685 Beyond Science
2011 Killian Lecture: Ronald L. Rivest, "The Growth of Cryptography"
 
01:09:19
Lecture title: "The Growth of Cryptography" Ronald L. Rivest, a professor of electrical engineering and computer science who helped develop one of the world's most widely used Internet security systems, was MIT’s James R. Killian, Jr. Faculty Achievement Award winner for 2010–2011. Rivest, the Andrew and Erna Viterbi professor in MIT's Department of Electrical Engineering and Computer Science, is known for his pioneering work in the field of cryptography, computer, and network security. February 8, 2011 Huntington Hall (10-250)
The End of Passwords is Here - You'll Never Need One Again Soon
 
10:25
𝐆𝐎𝐎𝐆𝐋𝐄, 𝐅𝐈𝐑𝐄𝐅𝐎𝐗, 𝐀𝐍𝐃 𝐌𝐈𝐂𝐑𝐎𝐒𝐎𝐅𝐓 𝐀𝐑𝐄 𝐓𝐄𝐀𝐌𝐈𝐍𝐆 𝐔𝐏 𝐓𝐎 𝐊𝐈𝐋𝐋 𝐏𝐀𝐒𝐒𝐖𝐎𝐑𝐃𝐒 𝐅𝐎𝐑𝐄𝐕𝐄𝐑 ● More Tech Discussions ➤ https://www.youtube.com/playlist?list=PLFr3c472Vstwe0Yk43UDnpqib5ReTwaJ- ● Subscribe Here ➤ https://www.youtube.com/user/ThioJoe?sub_confirmation=1 A brand new protocol called "WebAuthn" (short for Web Authentication) is getting a huge push by the top web browsers, namely Google Chrome, Mozilla Firefox, and Microsoft Edge. They now all support them in the final or beta versions, which is great news for those who hate passwords and love security. We already have a similar technology, U2F, but it was not as widely adopted, and only did two-factor authentication. WebAuthn is interesting because it will allow you actually register, and login, both without ever creating a password. This video shows a WebAuthn demo in action, and discusses the future. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ ⇨ http://Instagram.com/ThioJoe ⇨ http://Twitter.com/ThioJoe ⇨ http://Facebook.com/ThioJoeTV ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Views: 87203 ThioJoe
Bitcoin 101 - Elliptic Curve Cryptography - Part 4 - Generating the Public Key (in Python)
 
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Welcome to part four in our series on Elliptic Curve Cryptography. I this episode we dive into the development of the public key. In just 44 lines of code, with no special functions or imports, we produce the elliptic curve public key for use in Bitcoin. Better still, we walk you through it line by line, constant by constant. Nothing makes the process clearer and easier to understand than seeing it in straight forward code. If you've been wondering about the secp256k1 (arguably the most important piece of code in Bitcoin), well then this is the video for you. This is part 4 of our upcoming series on Elliptic Curves. Because of such strong requests, even though this is part 4, it is the first one we are releasing. In the next few weeks we will release the rest of the series. Enjoy. Here's the link to our Python code (Python 2.7.6): https://github.com/wobine/blackboard101/blob/master/EllipticCurvesPart4-PrivateKeyToPublicKey.py Here's the private key and the link to the public address that we use. Do you know why it is famous? Private Key : A0DC65FFCA799873CBEA0AC274015B9526505DAAAED385155425F7337704883E Public Address on Blockchain.info https://blockchain.info/address/1JryTePceSiWVpoNBU8SbwiT7J4ghzijzW Here's the private key we use at the end: 42F615A574E9CEB29E1D5BD0FDE55553775A6AF0663D569D0A2E45902E4339DB Public Address on Blockchain.info https://blockchain.info/address/16iTdS1yJhQ6NNQRJqsW9BF5UfgWwUsbF Welcome to WBN's Bitcoin 101 Blackboard Series -- a full beginner to expert course in bitcoin. Please like, subscribe, comment or even drop a little jangly in our bitcoin tip jar 1javsf8GNsudLaDue3dXkKzjtGM8NagQe. Thanks, WBN
Views: 21005 CRI
How does IOTA work?
 
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Blockchains are so 2017. 2018 will be all about BlockDAGs. I'll explain a cryptocurrency system called IOTA that is getting really popular and how it differs from a traditional blockchain. At the end I'll show you how you can buy some. Code for this video: https://github.com/llSourcell/IOTA_demo More learning resources: https://learn.iota.org/tutorials https://learn.iota.org/tutorial/payments-and-messaging-leaderboard https://www.youtube.com/watch?v=MsaPA3U4ung https://iotasupport.com/buyingiotaotc.shtml https://iotasupport.com/gettingstarted.shtml Please Subscribe! And like. And comment. That's what keeps me going. Want more inspiration & education? Connect with me: Twitter: https://twitter.com/sirajraval Facebook: https://www.facebook.com/sirajology Join us in the Wizards Slack channel: http://wizards.herokuapp.com/ And please support me on Patreon: https://www.patreon.com/user?u=3191693 Instagram: https://www.instagram.com/sirajraval/ Signup for my newsletter for exciting updates in the field of AI: https://goo.gl/FZzJ5w
Views: 79255 Siraj Raval
What's Proof of Work and Stake?
 
18:24
In this video we look at the challenges of establishing distributed consensus in a cryptocurrency and some potential solutions to the "byzantine generals' problem": Proof of Work (PoW) and Proof of Stake (PoS) For an excellent, detailed breakdown on some of the finer details of proof of stake, check out the Ethereum FAQ: https://github.com/ethereum/wiki/wiki/Proof-of-Stake-FAQ ### Find the video helpful? ### Support my work and get access to exclusive perks on Patreon: https://www.patreon.com/ummjackson ### Follow me on Twitter ### https://twitter.com/ummjackson Intro/outro music: dj quads (https://soundcloud.com/aka-dj-quads/medicine-to-me)
Views: 20223 Jackson Palmer
Yelawolf - Johnny Cash
 
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Get Yelawolf's "Love Story" - http://smarturl.it/YelaLoveStory Sign up for updates: http://smarturl.it/Yelawolf.News Music video by Yelawolf performing Johnny Cash. (C) 2015 Interscope Records http://www.vevo.com/watch/USUV71400880 Best of Yelawolf: https://goo.gl/vy7NZQ Subscribe here: https://goo.gl/ynkVDL
Views: 10782165 YelawolfVEVO
Slow Loris Attack - Computerphile
 
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Denial of service usually relies on a flood of data. Slow Loris takes a more elegant approach, and almost bores a server to death. Dr Mike Pound explains. Cracking Windows by Atom Bombing: https://youtu.be/rRxuh9fp7QI Zero Size Files: https://youtu.be/kiTTAbeqQKY Google Deep Dream: https://youtu.be/BsSmBPmPeYQ Babbage's Analytical Engine: COMING SOON http://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: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 471941 Computerphile
Quantum Communication and Networking talk by Prem Kumar at FiO+LS 2018
 
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Prem Kumar, Northwestern University, USA, discusses how machines that can process quantum information are likely to be commercially available in the near future and speculates on the future possibilities.
Views: 62 OpticalSociety
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: 47313 PBS Infinite Series
How and Why Bitcoin Will Go Mainstream – The Best of Bitcoin, Part 1
 
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Subscribe to stay up to date with the latest videos ► https://www.sbry.co/suBiH Episode 32 - How and Why Bitcoin Will Go Mainstream – The Best of Bitcoin, Part 1 There’s little doubt that one topic dominated financial headlines in 2017…and it took most investors by complete surprise. Bitcoin’s parabolic rise from $997 on January 1, 2017 to almost $20,000 this year has been nothing short of spectacular. In part 1 of the Best of Bitcoin, you’ll hear from Wall Street Journal senior writer Paul Vigna, author of the Age of Cryptocurrency and the upcoming Truth Machine. Paul helps you understand the origins of Bitcoin and how the underlying decentralized blockchain technology running it has the power to reinvent traditional financial and social structures. Porter interviews perma-bear David Tice who tells you why he thinks bitcoin is real, why it’s here to stay, and how it offers a complete paradigm shift for how businesses can operate. Tama Churchouse, editor of Crypto Capital and senior analyst at Stansberry Churchouse Research joins Buck and Porter to tell you exactly why Asia is the melting pot of crypto activity, how to get started in Bitcoin, which crypto assets to watch, and why learning the difference between Bitcoin, blockchain, and token function is crucial before investing in the crypto space. www.stansberrybitcoin.com Be sure to click here to never miss an episode ↓ SPOTIFY ► https://www.sbry.co/ufnNP GOOGLE PLAY MUSIC ► https://www.sbry.co/lkwhp ITUNES ► https://www.sbry.co/7OQ79 SOUNDCLOUD ► https://www.sbry.co/jHn5h STITCHER ► https://www.sbry.co/tEkL5 Check out NewsWire’s Investors MarketCast ↓ GOOGLE PLAY MUSIC ► https://www.sbry.co/dzzKq APPLE ITUNES ► https://www.sbry.co/GoCV0 STITCHER ► https://www.sbry.co/s86p1 ———————————— Follow us on Twitter ► https://www.sbry.co/p11ih Join our Facebook Community ► https://www.sbry.co/fMckK Check out our website ► https://www.sbry.co/wUAye Check out Stansberry NewsWire ►https://www.sbry.co/IhNeW Check out Health and Wealth Bulletin ► https://www.sbry.co/iHRmD Check out Extreme Value ► https://www.sbry.co/EvIiH ———————————— SHOW HIGHLIGHTS: 1:49 Buck explains the special nature of this end-of-year podcast and gets right into the No. 1 financial development that took almost everyone by surprise. The experts he and Porter are re-running for part one of this "Best of Bitcoin" segment will demystify three crucial questions: what the blockchain revolution will mean for you, why it's here to stay, and the best way for you to profit today. 9:40 Paul Vigna explains the most important feature of blockchain technology: the idea that you have an "open ledger" database that's maintained by a network of computers all running the exact same software that all make copies of any transaction made on any one of them. The end of financial privacy? Maybe – but here's why what you get in return is far more valuable. 12:25 Buck asks Paul why Bitcoin can't be counterfeited. Paul explains why Bitcoin's scarcity is a core feature of the currency, going back to creator Satoshi Nakamoto's 21 million Bitcoin limit and why if anyone tried to counterfeit Bitcoins, every other user would instantly know. 15:11 Paul explains the two major benefits of Bitcoin. "Bitcoin's entire existence in history is really a reaction to the existing monetary system and the existing financial system. It's designed to get around things its creator saw as problems." 18:25 Why does law enforcement love Bitcoin? Paul shares the story of how Bitcoin's radical transparency led them to the infamous drug dealer "Dread Pirate Roberts" and why it's not a good vehicle for committing crimes as many assume. 41:45 Buck wonders what happens to Bitcoin and other digital currencies when government gets antsy and decides to throw up roadblocks – or even ban it altogether. Porter explains the government's single biggest deterrent to standing in blockchain's way. 52:06 Porter asks cryptocurrency expert Tama Churchouse why, when Bitcoin is already un-hackable, impossible to counterfeit, and immune from central banking madness, more and more cryptocurrencies keep popping up. What do they have that Bitcoin doesn't?

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