Search results “Algorithme de cryptographie rsa lighting”
Asymmetric encryption - Simply explained
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
Extended Euclidean Algorithm and Inverse Modulo Tutorial
Using EA and EEA to solve inverse mod.
Views: 382596 Emily Jane
Elliptic Curve Cryptography Overview
John Wagnon discusses the basics and benefits of Elliptic Curve Cryptography (ECC) in this episode of Lightboard Lessons. Check out this article on DevCentral that explains ECC encryption in more detail: https://devcentral.f5.com/articles/real-cryptography-has-curves-making-the-case-for-ecc-20832
Views: 163322 F5 DevCentral
How secure is 256 bit security?
Supplement to the cryptocurrency video: How hard is it to find a 256-bit hash just by guessing and checking? What kind of computer would that take? Cryptocurrency video: https://youtu.be/bBC-nXj3Ng4 Thread for Q&A questions: http://3b1b.co/questions Several people have commented about how 2^256 would be the maximum number of attempts, not the average. This depends on the thing being attempted. If it's guessing a private key, you are correct, but for something like guessing which input to a hash function gives a desired output (as in bitcoin mining, for example), which is the kind of thing I had in mind here, 2^256 would indeed be the average number of attempts needed, at least for a true cryptographic hash function. Think of rolling a die until you get a 6, how many rolls do you need to make, on average? 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: 991831 3Blue1Brown
Data transmission Over Wifi using RSA Encryption
This video shows the demonstration of “Data Transmission Over Wi-Fi Using RSA Encryption”. The WiFi based secured wireless communication using RSA encryption allows us to communicate wirelessly with security feature. The data transfer during communication between two systems is encrypted using RSA encryption which is highly secure. The data can be decrypted with correct key only, otherwise it returns some garbage value. This is two-way communication system where we can transmit as well as receive at both ends. We have used Atmega microcontroller interfaced with xbee along with LCD display to send message and key, also have USB keyboards connected to each system and powered by 12V supply. To get this project, visit http://nevonprojects.com/wifi-based-secure-wireless-communication-using-rsa/ We provide Product Delivery and Customer Support Worldwide, so enter your country details on the website for the pricing details. CHECK OUT COLLECTION OF SOME OF OUR OTHER “Encryption Based Project” 1) Video Encryption and Sharing for Android https://youtu.be/4yyGK2ccUHc 2) Android SMS Encrypted System https://youtu.be/PRzIEI-QXf4 3) Extended AES with Custom Configurable Encryption https://youtu.be/3KvmNcw1SXg 4) Image Steganography with 3 Way Encryption https://youtu.be/YaAO758e7y0 5) Mobile Self Encryption Project https://youtu.be/vgABFiBlTJ4 CHECK OUT COLLECTION OF SOME OF OUR OTHER “Electronic Communication Based Project” 1) IR Wireless Underwater Communication System https://youtu.be/BucNu7-vhps 2) Zigbee Based Secured Wireless Communication Using AES https://youtu.be/fmhllaAGcrI 3) Mini FM Transmission System https://youtu.be/ccslzOYUPlc 4) Hand Motion Controlled Robotic Vehicle https://youtu.be/SKJ5JJZmRog 5) DC Motor Speed Control Using GSM https://youtu.be/A_vFGhm8G_A To subscribe this channel click the link https://www.youtube.com/channel/UCisTN-GbgzzLRXftgnCJGKg?sub_confirmation=1 “Nevon Express” is our other channel, watch it at https://www.youtube.com/channel/UCJbZbcQI5PNDvP4TSZUkHRQ
Views: 2958 Nevon Projects
Passwords & hash functions (Simply Explained)
How can companies store passwords safely and keep them away from hackers? Well let's find out! With all the data breaches lately, it's likely that the password of one of your accounts has been compromised. Hackers now might know the password you've used, but they also might not.. To understand why, we'll take a look at what methods a company can use to protect user passwords. We'll take a look at encryption, hash functions and a multilayer approach! 📚 Sources Can be found on my website: https://savjee.be/videos/simply-explained/hash-functions/ 🌍 Social Twitter: https://twitter.com/savjee Facebook: https://www.facebook.com/savjee ✏️ Check out my blog https://www.savjee.be
Cryptography: Cracking Codes
“As soon as you’ve got something precious to hide, someone will want to steal it.” Science journalist Simon Singh sheds light on the dark nature of cryptography. He explains just how far back the field of cryptography goes, and just how long it has taken for even some of the simplest ciphers to be broken. Watch the Full Program Here: https://youtu.be/nVVF8dgKC38 Original Program Date: June 4, 2011 The World Science Festival gathers great minds in science and the arts to produce live and digital content that allows a broad general audience to engage with scientific discoveries. Our mission is to cultivate a general public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future. Subscribe to our YouTube Channel for all the latest from WSF. Visit our Website: http://www.worldsciencefestival.com/ Like us on Facebook: https://www.facebook.com/worldsciencefestival Follow us on twitter: https://twitter.com/WorldSciFest
Elliptic Curves - Computerphile
Just what are elliptic curves and why use a graph shape in cryptography? Dr Mike Pound explains. Mike's myriad Diffie-Hellman videos: https://www.youtube.com/playlist?list=PLzH6n4zXuckpoaxDKOOV26yhgoY2S-xYg 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: 162913 Computerphile
Parallel Processing - Applied Cryptography
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 1429 Udacity
Light-weight Cryptography: Asymmetric Encryption (ELLI)
Views: 980 Bill Buchanan OBE
RSA Authentication Manager
Views: 22335 RSATechFest
Cryptography & Cyber Security with Cody Mercer at InfoSec World 2018
In this video we talk with Cody Mercer from Malwarebytes https://malwarebytes.com about cryptography, the military, how he got to where he is, the advice he would give, and about Malwarebytes. This video was recorded at InfoSec World 2018 in Orlando Florida. Thank you to MIS|TI for organizing this show! https://infosecworld.misti.com/ -------- A+ Product and Other Certification Book recommendations:(affiliate link) https://www.amazon.com/shop/itcareerquestions Top Recommendations! CompTIA NET+ Guide to Troubleshooting: http://amzn.to/2oLnMmI (affiliate Link) CompTIA A+ All-in-One Exam: http://amzn.to/2FjaNyC (affiliate link) MCSA Server 2016 Study Guide: http://amzn.to/2Ff1tQw (affiliate link) MCSA SQL 2016 Study Guide: http://amzn.to/2FXqCMR (affiliate link) MTA OS Fundamentals: http://amzn.to/2FjOvNm (affiliate link) CCENT Official Cert Guide: http://amzn.to/2FkcQT8 (affiliate link) CCNA Routing & Switching: http://amzn.to/2oMv2id (affiliate link) I.T. Career Questions/Zach Talks Tech Merchandise: https://teespring.com/stores/it-career-questions -------- The equipment used in this video is as follows(Affiliate links below) Sony a9(Main Camera): http://amzn.to/2EjWbQc Sony a7(Second/Backup Camera): http://amzn.to/2xQrcpY Google Pixel 2 XL(Side Camera): https://store.google.com/us/product/pixel_phone?hl=en-US Zoom H1 Digital Recorder: http://amzn.to/2zlEA6v Giant Squid Microphone: http://amzn.to/2zl6WxK Flexispot 47" Sit Stand Desk: http://amzn.to/2gviP0x NanoLeaf LED Lights: https://us-shop.nanoleaf.me?rfsn=815333.867f4&utm_source=refersion&utm_medium=affiliate&utm_campaign=815333.867f4 -------- Thank you for visiting my YouTube channel. Facebook: https://www.facebook.com/pcsimplest Twitter: https://twitter.com/pcsimplest Website: http://www.itcareerquestions.com Information Systems: http://www.informationsystems.net
Key Exchange Problems - Computerphile
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: 119204 Computerphile
Lightning Talk: DNA Cryptography - PKIA 2017
Date: 14th November 2017 Speaker: Sreeja Sukumaran, Christ University
Views: 221 PKIIndia
Randon Stansey IDEA Cryptography Project
I created this video with the YouTube Video Editor (https://www.youtube.com/editor)
Views: 1120 cbarratt2
Implementation of Secured Communication between two Arm Processor based devices using RSA Algorithm
The prime objective of this project is to provide Secured Communication between two Arm Processor based devices using RSA Algorithm. Since Security of the data in the wireless communication has become a critical issue, so a system has been implemented to have a secured communication wherein the message to be communicated is encrypted using RSA algorithm on Nuvoton board and then transmitted serially and thus successfully decrypted on Raspberry pi.
Views: 120 ajith shetty
ECC vs RSA: Battle of the Crypto-Ninjas
RSA is the oldest kid in the public-key cryptography playground, and its position of toughest and fastest is under sharp competition from ECC (Elliptic Curve Cryptography). We look at the mathematical difference between the two cryptosystems, showing why ECC is faster and harder than RSA, but also very energy efficient hence its unique advantage in the mobile space. We show how to use ECC in your Java and Android applications. Before finally summarising the state of the union for RSA and ECC in the light of the Snowden leaks, and the likely near-future for public-key cryptography. Author: James McGivern A mathematician turned programmer, James has been working in the software engineer for over 5 years in various industries. He revels in problems that involve data structures or algorithms. Currently working for Cisco's Cloud Web Security group building cloud-based SaaS platform providing real-time threat detection and filtering of internet traffic. James's ambitions are to become a polymath and be a space tourist
Views: 561 Parleys
Cryptography: The Science of Making and Breaking Codes
There are lots of different ways to encrypt a message, from early, simple ciphers to the famous Enigma machine. But it’s tough to make a code truly unbreakable. Hosted by: Michael Aranda ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, John Szymakowski, Fatima Iqbal, Justin Lentz, David Campos, and Chris Peters. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://www.vectorsite.net/ttcode_04.html#m3 http://www.simonsingh.net/The_Black_Chamber/crackingprinciple.html http://book.itep.ru/depository/crypto/Cryptography_history.pdf http://www.cs.trincoll.edu/~crypto/historical/gronsfeld.html http://www.sans.org/reading-room/whitepapers/vpns/history-encryption-730 http://ftp.stmarys-ca.edu/jsauerbe/m10s11/chapter5.pdf http://www.turing.org.uk/scrapbook/ww2.html http://enigma.louisedade.co.uk/howitworks.html http://www.codesandciphers.org.uk/enigma/example1.htm http://www.pbs.org/wgbh/nova/military/how-enigma-works.html http://www.cs.miami.edu/~burt/learning/Csc609.051/notes/02.html
Views: 803801 SciShow
16. Side-Channel Attacks
MIT 6.858 Computer Systems Security, Fall 2014 View the complete course: http://ocw.mit.edu/6-858F14 Instructor: Nickolai Zeldovich In this lecture, Professor Zeldovich discusses side-channel attacks, specifically timing attacks. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 11245 MIT OpenCourseWare
Gambling with Secrets: 8/8 (RSA Encryption)
RSA Encryption - How & why it works. Euclid, Euler, Cocks and much more Link to time complexity graph used in the video: https://www.khanacademy.org/labs/explorations/time-complexity Newer animated version: https://www.khanacademy.org/math/applied-math/cryptography/modern-crypt/p/time-complexity-exploration
Views: 57341 Art of the Problem
Crypto Won't Save You Either
Peter Gutmann http://lca2015.linux.org.au/schedule/30134/view_talk Cryptographer Adi Shamir, the 'S' in RSA, once said that "cryptography is bypassed, not penetrated". In the light of the Snowden revelations about the NSA, various people have proposed using crypto in order to evade NSA surveillance. This talk tries to put that into perspective, looking at ten years of trying to secure things with crypto that ultimately failed, not through anyone bothering to break it but because it was much easier just to bypass it. The lesson from all of this is that you can't just throw crypto at something and assume that that will make you safe.
Metode RSA PENJELASAN DAN CARA Encrypt & Decrypt
NIM : 311511066 Nama: Anugrah Herliansyah Kelas: TI.15.A.1 RSA adalah bentuk penyadian dengan public key. Penyandian public key adalah penyandian asimetris, sandi dibuat menggunakan public key kemudian dikembalikan ke pesan aslinya menggunakan private key. RSA sendiri merupakan kependekan dari Ron Rivest, Adi Shamir dan Leonard Adleman yang merupakan penemunya. RSA diumpamakan penyandian dengan suatu bilangan prima dan dibuka dengan bilangan prima yang lain. Secara umum public key yang merupakan bilangan prima perta boleh diketahui oleh siapa saja, tetapi private key yang berupa bilangan prima kedua harus disimpan rapat-rapat. Pengertian RSA: https://www.proweb.co.id/articles/datacenter/memahami_rsa.html Website Encrypt & Decrypt RSA : http://travistidwell.com/jsencrypt/demo/ Music: https://www.youtube.com/watch?v=Ou5yoKTFjEo
Views: 115 Anugrah Herliansyah
Jake Burden: "Crypto Verification in Node with Sodium" | Lightning Talks at Digital Surgeons
Jake shows you how to confirm the identity of a sender using Sodium in Node.js Follow Digital Surgeons Facebook: http://facebook.com/dsurgeons Twitter: https://twitter.com/digitalsurgeons
Views: 128 Digital Surgeons
RSA Conference 2012 - Defending Behind the Device: Mobile Application Risks - Chris Wysopal
Risks to mobile devices are similar to those of traditional software applications and a result of insecure coding practices. However, mobile devices aren't just small computers. They are designed around personal and communication functionality which makes the top mobile applications risks different from the top traditional computing risks and an easier opportunity for those with malicious intent. SPEAKER: Chris Wyspol, Co-Founder & Chief Technology officer, Veracode, inc. Subscribe to our YouTube Channel http://www.youtube.com/rsaconference Find us on Facebook http://www.facebook.com/rsaconference Follow us on Twitter http://www.twitter.com/rsaconference Visit our website at http://www.rsaconference.com/
Views: 3832 RSA Conference
RSA Car Safety Checks Basics
Working for the Road Safety Authority on behalf of Irish International, to record this series of social media videos outlining the basic service and safety checks that you can complete on your vehicle. Filmed in D-Light studios over the course of two days with full crew lighting, rigging and extensive autocue work. This video was filmed by Big Red Engine. www.bigredengine.ie - [email protected]
Views: 56 BigRedEngineTV
Stanford Seminar - The Evolution of Public Key Cryptography
EE380: Computer Systems Colloquium Seminar The Evolution of Public Key Cryptography Speaker: Martin Hellman, Stanford EE (Emeritus) While public key cryptography is seen as revolutionary, after this talk you might wonder why it took Whit Diffie, Ralph Merkle and Hellman so long to discover it. This talk also highlights the contributions of some unsung (or "under-sung") heroes: Ralph Merkle, John Gill, Stephen Pohlig, Richard Schroeppel, Loren Kohnfelder, and researchers at GCHQ (Ellis, Cocks, and Williamson). Resources and Reading Materials M. E. Hellman, Cybersecurity, Nuclear Security, Alan Turing, and Illogical Logic (http://www-ee.stanford.edu/ %7Ehellman/publications/77.pdf), Communications of the ACM, Vol. 60, No. 12, pp. 52-59, December 2017. This is a written version of Martin Hellman's ACM Turing Lecture (https://www.youtube.com/watch?v=I132wSwAI3o) and was accompanied by a short (6 minute) video (https://vimeo.com/241030842). Other materials and hard to find references can be found on Martin Hellman's Stanford website, http://www-ee.stanford.edu/~hellman/ . About the Speaker: Martin E. Hellman is Professor Emeritus of Electrical Engineering at Stanford University and is affiliated with the university's Center for International Security and Cooperation (CISAC). His recent technical work has focused on bringing a risk informed framework to a potential failure of nuclear deterrence and then using that approach to find surprising ways to reduce the risk. His earlier work included co- inventing public key cryptography, the technology that underlies the secure portion of the Internet. His many honors include election to the National Academy of Engineering and receiving (jointly with his colleague Whit Diffie) the million dollar ACM Turing Award, the top prize in computer science. His most recent project is a book, jointly written with his wife of fifty years, "A New Map for Relationships: Creating True Love at Home & Peace on the Planet," that provides a "unified field theory" of peace by illuminating the connections between nuclear war, conventional war, interpersonal war, and war within our own psyches. For more information about this seminar and its speaker, you can visit https://ee380.stanford.edu/Abstracts/180307.html Support for the Stanford Colloquium on Computer Systems Seminar Series provided by the Stanford Computer Forum. Colloquium on Computer Systems Seminar Series (EE380) presents the current research in design, implementation, analysis, and use of computer systems. Topics range from integrated circuits to operating systems and programming languages. It is free and open to the public, with new lectures each week. Learn more: http://bit.ly/WinYX5
Views: 1868 stanfordonline
Private Key Encryption (Symmetric Key Encryption)
In private key encryption, data is encrypted using a single same key that only the sender and the receiver know. That is why private key encryption is also called symmetric key encryption because the same key is used during both encryption and decryption of the transmitted data. In this video, I will also use an example to demonstrate the process of using private key encryption. Two different methods -stream encryption and block encryption- of private key algorithm are also depicted with animation. Playlist: Basic Cryptography https://www.youtube.com/watch?v=vk3py9M2IfE&list=PLSNNzog5eyduN6o4e6AKFHekbH5-37BdV Advanced Cryptography: https://www.youtube.com/watch?v=TmA2QWSLSPg&list=PLSNNzog5eydtwsdT__t5WtRgvpfMzpTc7 Please leave comments, questions and please subscribe!
Views: 22266 Sunny Classroom
Quantum Cryptography Explained
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: 270096 Physics Girl
Applied Cryptography: RSA - Finding Large Primes - Part 1
This video gives an introduction and motivation about finding large prime numbers for the RSA. General ideas are discussed.
Views: 1631 Leandro Junes
Cryptography: Crash Course Computer Science #33
Today we’re going to talk about how to keep information secret, and this isn’t a new goal. From as early as Julius Caesar’s Caesar cipher to Mary, Queen of Scots, encrypted messages to kill Queen Elizabeth in 1587, theres has long been a need to encrypt and decrypt private correspondence. This proved especially critical during World War II as Allan Turing and his team at Bletchley Park attempted to decrypt messages from Nazi Enigma machines, and this need has only grown as more and more information sensitive tasks are completed on our computers. So today, we’re going to walk you through some common encryption techniques such as the Advanced Encryption Standard (AES), Diffie-Hellman Key Exchange, and RSA which are employed to keep your information safe, private, and secure. Note: In October of 2017, researchers released a viable hack against WPA2, known as KRACK Attack, which uses AES to ensure secure communication between computers and network routers. The problem isn't with AES, which is provably secure, but with the communication protocol between router and computer. In order to set up secure communication, the computer and router have to agree through what's called a "handshake". If this handshake is interrupted in just the right way, an attacker can cause the handshake to fault to an insecure state and reveal critical information which makes the connection insecure. As is often the case with these situations, the problem is with an implementation, not the secure algorithm itself. Our friends over at Computerphile have a great video on the topic: https://www.youtube.com/watch?v=mYtvjijATa4 Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Want to know more about Carrie Anne? https://about.me/carrieannephilbin The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV Want to find Crash Course elsewhere on the internet? Facebook - https://www.facebook.com/YouTubeCrash... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 205966 CrashCourse
Do you REALLY understand Bitcoin 51% Attack? Programmer explains.
Bitcoin 51% attack is a theoretical attack that can be caused by someone who possesses 51% or more of the hashing power in the network. Today we talk about exactly what this attack is and how it can be executed. Thanks for watching guys 💝 🎤 If you would like me to speak at your conference, book me here: https://ivanontech.com 🍻 Join the crypto discussion forum - https://thecrypto.pub 📚 Get my free e-book on Bitcoin and Blockchain - http://eepurl.com/c0hyc9 you will receive the book in your inbox once you sign up 👫👭👬Social: LinkedIn: http://linkedin.com/in/ivanliljeqvist/ Instagram: http://instagram.com/ivanontech/ Steemit: https://steemit.com/@ivanli Facebook: http://facebook.com/ivanontech/ Exclusive email list: http://eepurl.com/c0hyc9 🤑 Buy cryptocurrencies: https://www.coinbase.com/join/529bab0ab08ded7080000019 💰 Secure your Crypto with Hardware Wallets: Ledger: https://www.ledgerwallet.com/r/4607 Trezor: https://trezor.io/?a=rvj3rqtje3ph Ivan on Tech by Ivan Liljeqvist
Views: 74642 Ivan on Tech
The Lava Lamps That Help Keep The Internet Secure
At the headquarters of Cloudflare, in San Francisco, there's a wall of lava lamps: the Entropy Wall. They're used to generate random numbers and keep a good bit of the internet secure: here's how. Thanks to the team at Cloudflare - this is not a sponsored video, they just had interesting lava lamps! There's a technical rundown of the system on their blog here: https://blog.cloudflare.com/lavarand-in-production-the-nitty-gritty-technical-details Edited by Michelle Martin, @mrsmmartin I'm at http://tomscott.com on Twitter at http://twitter.com/tomscott on Facebook at http://facebook.com/tomscott and on Snapchat and Instagram as tomscottgo
Views: 1284589 Tom Scott
RSA Replay: How We Make the Decisions That Matter | Steven Johnson | RSA Replay
Bestselling popular science author Steven Johnson fuses cognitive science, social psychology, military strategy, environmental planning, and great works of literature to shed light on the nature of long-term decisions. He visits the UK to argue that we choose better when we break out of the myopia of single-scale thinking and develop methods for considering all the factors involved. There's no one-size-fits-all model for the important decisions that can alter the course of a life, an organisation, or a civilisation. But we can approach these choices more effectively, and appreciate the subtle intelligence of choices that shaped our broader social history. SUBSCRIBE to our channel! Follow the RSA on Twitter: https://twitter.com/RSAEvents Like RSA Events on Facebook: https://www.facebook.com/rsaeventsofficial Listen to RSA podcasts: https://soundcloud.com/the_rsa See RSA Events behind the scenes: https://instagram.com/rsa_events/
Views: 1641 The RSA
Mulitple Signatures using Schnorr's Method
Details: https://asecuritysite.com/encryption/sch
Views: 392 Bill Buchanan OBE
What is POST-QUANTUM CRYPTOGRAPHY? What does POST-QUANTUM CRYPTOGRAPHY mean? POST-QUANTUM CRYPTOGRAPHY meaning - POST-QUANTUM CRYPTOGRAPHY definition - POST-QUANTUM CRYPTOGRAPHY 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 Post-quantum cryptography refers to cryptographic algorithms (usually public-key algorithms) that are thought to be secure against an attack by a quantum computer. This is not true for the most popular public-key algorithms, which can be efficiently broken by a sufficiently large quantum computer. The problem with the currently popular algorithms is that their security relies on one of three hard mathematical problems: the integer factorization problem, the discrete logarithm problem or the elliptic-curve discrete logarithm problem. All of these problems can be easily solved on a sufficiently powerful quantum computer running Shor's algorithm. Even though current, publicly known, experimental quantum computers are too small to attack any real cryptographic algorithm, many cryptographers are designing new algorithms to prepare for a time when quantum computing becomes a threat. This work has gained greater attention from academics and industry through the PQCrypto conference series since 2006 and more recently by several workshops on Quantum Safe Cryptography hosted by the European Telecommunications Standards Institute (ETSI) and the Institute for Quantum Computing. In contrast to the threat quantum computing poses to current public-key algorithms, most current symmetric cryptographic algorithms and hash functions are considered to be relatively secure against attacks by quantum computers. While the quantum Grover's algorithm does speed up attacks against symmetric ciphers, doubling the key size can effectively block these attacks. Thus post-quantum symmetric cryptography does not need to differ significantly from current symmetric cryptography.
Views: 202 The Audiopedia
Using Clojure with C APIs for crypto and more - lvh
One of Clojure’s strengths is its host interop, but sometimes you really want to call some C code. Perhaps you have a legacy .so/.dll you inherited; perhaps you’re calling a video decoder or some cryptographic routines. This talk focuses on that interop, using a cryptographic library (caesium, which binds libsodium) as a specific example. It shows how Clojure can still leverage its strengths in this context, providing a significantly better environment for both R&D and general use compared to either plain Java or even other high-level C-centric programming environments like Python. This talks includes the mechanics of accomplishing this, lessons learned managing a real library used in production, and future efforts to make this process smoother for future programmers (e.g. manylinux1).
Views: 1890 ClojureTV
Prospects for a Quantum Factoring Machine
Invited talk at Crypto 2017 by John Martinis, Google and UCSB.
Views: 257 TheIACR
Bitcoin Cryptography in Javascript
Oliver Gugger https://www.twitter.com/gugol Checkout his slides: https://gugger.guru/lightning-workshop/slides-04-berner-js.html
Views: 38 Bärner JS Talks
RSA Power Analysis Side-Channel Attack - rhme2
Preparing an arduino nano board to perform a power analysis side channel attack and explaining how that can be used to break RSA. Also proof I can't count. RSA video: https://www.youtube.com/watch?v=sYCzu04ftaY rhme2 by riscure: http://rhme.riscure.com/home Oscilloscope: Rigol DS2072A Soldering Station: Weller WD1 -=[ 💻 Related Products ]=- → Soldering station:* https://amzn.to/2SII4du → Oscilloscope:* https://amzn.to/2SMsDAY → Cheaper Oscilloscope:* https://amzn.to/2RCzCyX -=[ 🔴 Stuff I use ]=- → Microphone:* https://amzn.to/2LW6ldx → Graphics tablet:* https://amzn.to/2C8djYj → Camera#1 for streaming:* https://amzn.to/2SJ66VM → Lens for streaming:* https://amzn.to/2CdG31I → Connect Camera#1 to PC:* https://amzn.to/2VDRhWj → Camera#2 for electronics:* https://amzn.to/2LWxehv → Lens for macro shots:* https://amzn.to/2C5tXrw → Keyboard:* https://amzn.to/2LZgCFD → Headphones:* https://amzn.to/2M2KhxW -=[ ❤️ Support ]=- → per Video: https://www.patreon.com/join/liveoverflow → per Month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join -=[ 🐕 Social ]=- → Twitter: https://twitter.com/LiveOverflow/ → Website: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/ -=[ 📄 P.S. ]=- All links with "*" are affiliate links. LiveOverflow / Security Flag GmbH is part of the Amazon Affiliate Partner Programm.
Views: 18194 LiveOverflow
Ouroboros | IACR Crypto-2017
Filmed on location at Crypto 2017, the 37th International Cryptology Conference. The event was held at the University of California, Santa Barbara (UCSB) August 20-24 2017. The academic program covers all aspects of cryptology. The conference is sponsored by the International Association for Cryptologic Research (IACR), in cooperation with the Computer Science Department of UCSB. https://www.iacr.org/conferences/crypto2017/ Developing a secure proof of stake algorithm is one of the big challenges in cryptocurrency, and a proposed solution to this problem won the attention of the academic community. Several hundred cryptographers from around the world arrived at the University of California Santa Barbara on Sunday for the flagship annual event of their field, Crypto 2017. Over several days, they present cutting edge research for the scrutiny of their peers, while in the evenings they continue discussions with friends and colleagues over dinner on the university campus, with the inspiring backdrop of the Santa Ynez mountains meeting the Pacific ocean behind them. https://iohk.io/press/ Ouroboros, developed by a team led by IOHK chief scientist Aggelos Kiayias, made it through a tough admission process for the prestigious conference. This year, 311 papers were submitted and of those 72 were accepted. Only three papers at the conference were on the subject of blockchain. All three papers were supported by IOHK funding. Speaking after his presentation, Professor Kiayias said: “We’re very happy that we had the opportunity to present Ouroboros at the conference. The protocol and especially its security analysis were very well received by fellow cryptographers.” “Our next steps will be to focus on the next version of the protocol, Ouroboros Praos which improves even further the security and performance characteristics of the protocol.” The Ouroboros protocol stands out as the first proof of stake algorithm that is provably secure, meaning that it offers security guarantees that are mathematically proven. This is essential for a protocol that is intended to be used in cryptocurrency, an infrastructure that must be relied on to carry billions of dollars worth of value. In addition to security, if blockchains are going to become infrastructure for new financial systems they must be able to comfortably handle millions of users. The key to scaling up is proof of stake, a far more energy efficient and cost effective algorithm, and as such this research represents a significant step forward in cryptography. Ouroboros also has the distinction of being implemented – the protocol will be an integral part of Cardano, a blockchain system currently in development. https://iohk.io/research/papers/#XJ6MHFXX https://iohk.io/projects/cardano/ There were two other papers presented at the bitcoin session on Monday. The Bitcoin Backbone Protocol with Chains of Variable Difficulty, was produced by a team of three researchers and included Prof Kiayias. It is a continuation of previous research into Bitcoin, which was itself the first work to prove security properties of its blockchain. A third paper on the subject of bitcoin was presented, Bitcoin as a Transaction Ledger: A Composable Treatment. Other notable talks at the conference included a presentation by John Martinis, an expert on quantum computing and former physics professor at the University of California Santa Barbara, who is now working at Google to build a quantum computer. Leading cryptographers at the conference included Whitfield Diffie, pioneer of the public key cryptography that made Bitcoin possible, and Ron Rivest, Adi Shamir, and Leonard Adleman, who came up with the RSA public-key cryptosystem that is widely used for secure data transmission. https://www.forbes.com/sites/amycastor/2017/08/23/at-crypto-2017-blockchain-presentations-focus-on-proofs-not-concepts/#6e558d1a7b70 https://iohk.io/team/aggelos-kiayias/ https://iohk.io/team/bernardo-david/ https://iohk.io/team/peter-gazi/ -- Input Output See more at: https://iohk.io Get our latest news updates: https://iohk.io/blog/ Meet the team: https://iohk.io/team/ Learn about our projects: https://iohk.io/projects/cardano/ Read our papers: http://iohk.link/paper-ouroboros Visit our library: https://iohk.io/research/library/ In the press: https://iohk.io/press/ Work with us: https://iohk.io/careers/ See more on Cardano: https://iohk.io/projects/cardano/ --
Views: 1584 IOHK
What is QUANTUM CRYPTOGRAPHY? What does QUANTUM CRYPTOGRAPHY mean? QUANTUM CRYPTOGRAPHY meaning - QUANTUM CRYPTOGRAPHY definition - QUANTUM CRYPTOGRAPHY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Quantum cryptography is the science of exploiting quantum mechanical properties to perform cryptographic tasks. The best known example of quantum cryptography is quantum key distribution which offers an information-theoretically secure solution to the key exchange problem. Currently used popular public-key encryption and signature schemes (e.g., RSA and ElGamal) can be broken by quantum adversaries. The advantage of quantum cryptography lies in the fact that it allows the completion of various cryptographic tasks that are proven or conjectured to be impossible using only classical (i.e. non-quantum) communication (see below for examples). For example, it is impossible to copy data encoded in a quantum state and the very act of reading data encoded in a quantum state changes the state. This is used to detect eavesdropping in quantum key distribution. History: Quantum cryptography uses Heisenberg's uncertainty principle formulated in 1927, and the No-cloning theorem first articulated by Wootters and Zurek and Dieks in 1982. Werner Heisenberg discovered one of the fundamental principles of quantum mechanics: "At the instant at which the position of the electron is known, its momentum therefore can be known only up to magnitudes which correspond to that discontinuous change; thus, the more precisely the position is determined, the less precisely the momentum is known, and conversely” (Heisenberg, 1927: 174–5). This simply means that observation of quanta changes its behavior. By measuring the velocity of quanta we would affect it, and thereby change its position; if we want to find a quant's position, we are forced to change its velocity. Therefore, we cannot measure a quantum system's characteristics without changing it (Clark, n.d.) and we cannot record all characteristics of a quantum system before those characteristics are measured. The No-cloning theorem demonstrates that it is impossible to create a copy of an arbitrary unknown quantum state. This makes unobserved eavesdropping impossible because it will be quickly detected, thus greatly improving assurance that the communicated data remains private. Quantum cryptography was proposed first by Stephen Wiesner, then at Columbia University in New York, who, in the early 1970s, introduced the concept of quantum conjugate coding. His seminal paper titled "Conjugate Coding" was rejected by IEEE Information Theory Society, but was eventually published in 1983 in SIGACT News (15:1 pp. 78–88, 1983). In this paper he showed how to store or transmit two messages by encoding them in two "conjugate observables", such as linear and circular polarization of light, so that either, but not both, of which may be received and decoded. He illustrated his idea with a design of unforgeable bank notes. In 1984, building upon this work, Charles H. Bennett, of the IBM's Thomas J. Watson Research Center, and Gilles Brassard, of the Université de Montréal, proposed a method for secure communication based on Wiesner's "conjugate observables", which is now called BB84. In 1991 Artur Ekert developed a different approach to quantum key distribution based on peculiar quantum correlations known as quantum entanglement. Random rotations of the polarization by both parties (usually called Alice and Bob) have been proposed in Kak's three-stage quantum cryptography protocol. In principle, this method can be used for continuous, unbreakable encryption of data if single photons are used. The basic polarization rotation scheme has been implemented. The BB84 method is at the basis of quantum key distribution methods. Companies that manufacture quantum cryptography systems include MagiQ Technologies, Inc. (Boston, Massachusetts, United States), ID Quantique (Geneva, Switzerland), QuintessenceLabs (Canberra, Australia) and SeQureNet (Paris, France).
Views: 1361 The Audiopedia
Network Security - One Time Pad & Quantum Key Distribution
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
RSA Conference 2012 Keynote - Security from Client to the Cloud - Pranav Mehta
Pranav Mehta Sr. Principal Engineer and Chief Technology Officer; Intelligent Systems Group Intel Increasing user demand for video and rich content and subsequent desire by network operators to grow service revenue in the face of increased capital and operational expenditure to provision such demand creates significant challenges. Securing rich media traffic while mining it for valuable services increases the level of complexity and sophistication of the network infrastructure especially given the constantly evolving standards and protocols. Add to this the emerging paradigm of "Internet of Things," where billions of context aware devices will connect to the internet infrastructure and generate traffic to achieve autonomous operations, creating a different set of security challenges for such application scenarios. This keynote will present an architectural approach that achieves optimized performance/watt efficiency along with software and performance scalability, and enables development of agile platforms that maximize the Return on Investment (ROI). Subscribe to our YouTube Channel http://www.youtube.com/rsaconference Find us on Facebook http://www.facebook.com/rsaconference Follow us on Twitter http://www.twitter.com/rsaconference Visit our website at http://www.rsaconference.com/
Views: 9168 RSA Conference
Leakage-Resilient Symmetric Cryptography under Empirical ...
Talk at crypto 2013. Authors: François-Xavier Standaert, Olivier Pereira, Yu Yu
Views: 178 TheIACR
What is Schnorr and why is it important?
-------------------------- Seminar: http://programmingblockchain.com/ Newsletter: http://eepurl.com/cZr_Aj Medium: https://medium.com/@jimmysong Twitter: https://twitter.com/jimmysong Github: https://github.com/jimmysong
Difference between Asymmetric Key and Symmetric Key Cryptography
Difference between Asymmetric Key and Symmetric Key Cryptography Keywords: Asymmetric Key Cryptography Symmetric Key Cryptography Network Security Notes
NSA Surveillance: What We Know, and What to Do about It
Bruce Schneier, CTO, Co3 Systems Drawing from Snowden documents and revelations from previous whistleblowers, this talk will cover types of surveillance the NSA conducts and how it conducts it. Emphasis will be on the technical capabilities of the NSA, not the politics or legality of their actions; includes a discussion on countermeasures likely to frustrate any nation-state adversary & raise the cost of wholesale surveillance.
Views: 2530 RSA Conference