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Search results “Double key cryptography for dummies”

06:20
Spies used to meet in the park to exchange code words, now things have moved on - Robert Miles explains the principle of Public/Private Key Cryptography note1: Yes, it should have been 'Obi Wan' not 'Obi One' :) note2: The string of 'garbage' text in the two examples should have been different to illustrate more clearly that there are two different systems in use. 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. See the full list of Brady's video projects at: http://bit.ly/bradychannels
Views: 427961 Computerphile

06:45
Views: 479881 itfreetraining

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The history behind public key cryptography & the Diffie-Hellman key exchange algorithm. We also have a video on RSA here: https://www.youtube.com/watch?v=wXB-V_Keiu8
Views: 627381 Art of the Problem

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How do we exchange a secret key in the clear? Spoiler: We don't - Dr Mike Pound shows us exactly what happens. Mathematics bit: https://youtu.be/Yjrfm_oRO0w Computing Limit: https://youtu.be/jv2H9fp9dT8 https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 217705 Computerphile

05:06
Views: 1015541 3Blue1Brown

01:02:38
Dr. Soper discusses encryption concepts. Topics covered include encryption algorithms, keyed and keyless cryptosystems, cryptanalysis, breaking encrypted messages, substitution, transposition, and product ciphers, the Caesar cipher, the Vigenère cipher, one-time pads, the Vernam cipher, book ciphers, symmetric and asymmetric cryptosystems, public-key encryption, stream ciphers, block ciphers, the data encryption standard (DES), and the advanced encryption standard (AES).
Views: 33126 Dr. Daniel Soper

49:38
DES algorithm follows the Feistel Structure Most of the Block cipher algorithms follows Feistel Structure BLOCK SIZE - 64 bits Plain Text No. of Rounds - 16 Rounds Key Size - 64 bits Sub Key Size - 48 bits No. of Sub Keys - 16 Sub Keys Cipher Text - 64 bits

11:29
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: 169092 F5 DevCentral

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In this video we look at substitution ciphers: how they are made and how to break them.
Views: 62248 Pico Cetef

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This is part 11 of the Blockchain tutorial explaining how the generate a public private key using Elliptic Curve. In this video series different topics will be explained which will help you to understand blockchain. Bitcoin released as open source software in 2009 is a cryptocurrency invented by Satoshi Nakamoto (unidentified person or group of persons). After the introduction of Bitcoin many Bitcoin alternatives were created. These alternate cryptocurrencies are called Altcoins (Litecoin, Dodgecoin etc). Bitcoin's underlying technology is called Blockchain. The Blockchain is a distributed decentralized incorruptible database (ledger) that records blocks of digital information. Each block contains a timestamp and a link to a previous block. Soon people realises that there many other use cases where the Blockchain technology can be applied and not just as a cryptocurrency application. New Blockchain platforms were created based on the Blockchain technology, one of which is called Ethereum. Ethereum focuses on running programming code, called smart contracts, on any decentralized application. Using the new Blockchain platforms, Blockchain technology can be used in supply chain management, healthcare, real estate, identity management, voting, internet of things, etcetera, just to name a few. Today there is a growing interest in Blockchain not only in the financial sector but also in other sectors. Explaining how Blockchain works is not easy and for many the Blockchain technology remains an elusive concept. This video series tries to explain Blockchain to a large audience but from the bottom up. Keywords often used in Blockchain conversation will be explained. Each Blockchain video is short and to the point. It is recommended to watch each video sequentially as I may refer to certain Blockchain topics explained earlier. Check out all my other Blockchain tutorial videos https://goo.gl/aMTFHU Subscribe to my YouTube channel https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: http://www.mobilefish.com/developer/blockchain/blockchain_quickguide_tutorial.html The presentation used in this video tutorial can be found at: http://www.mobilefish.com/developer/blockchain/blockchain_quickguide_tutorial.html The python script used in the video: https://www.mobilefish.com/download/cryptocurrency/bitcoin_ec_key_generation.py.txt Cryptocurrency address generator and validator: https://www.mobilefish.com/services/cryptocurrency/cryptocurrency.html Desmos graph: https://www.desmos.com/calculator/kkj2efqk5x James D'Angelo, Bitcoin 101 Elliptic Curve Cryptography Part 4: https://youtu.be/iB3HcPgm_FI #mobilefish #blockchain #bitcoin #cryptocurrency #ethereum
Views: 17718 Mobilefish.com

04:20
An animated attempt of explaining the Playfair cipher. This tutorial includes rules of the cipher followed by an example to clear things up. This was a part of my final year project to create a learning aid. I decided to upload this so the animation won't go to waste. All feedbacks welcome. Special thanks to Olivia Beck for creating the background image
Views: 179480 Kenny Luminko

30:14
https://asecuritysite.com/cryptobook/crypto02
Views: 1990 Bill Buchanan OBE

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How does instant messaging encryption protect against attack? Dr Mike Pound on the double ratchet. Diffie Hellman Key Exchange Explained: https://youtu.be/NmM9HA2MQGI Signal Protocol: https://youtu.be/DXv1boalsDI Endianness Explained with an Egg: https://youtu.be/NcaiHcBvDR4 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: 76299 Computerphile

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Views: 1263 Simple Snippets

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Information Security: Principles and Practice, 2nd edition, by Mark Stamp Chapter 3: Symmetric Key Crypto Section 3.2.2 stream ciphers, RC4 Class Lecture, 2011
Views: 31060 Mark Stamp

01:27:48
For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com

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"If you can explain this using common sense and logic, do let me know, because there is a Nobel Prize for you.." Professor Jim Al-Khalili explains the experiment that reveals the "central mystery of quantum mechanics" - the double slit experiment. Watch the full lecture here: http://www.youtube.com/watch?v=wwgQVZju1ZM Sometimes called the "two-slit" or "Young's" experiment, it demonstrates that matter and energy can display the characteristics of both waves and particles, establishing the principle known as wave-particle duality. Furthermore, it questions the role of the observer in the outcome of events and demonstrates the fundamental limitation of an observer to predict experimental results. For this reason, Richard Feynman called it "a phenomenon which is impossible ... to explain in any classical way, and which has in it the heart of quantum mechanics. In reality, it contains the only mystery [of quantum mechanics]," (see more at http://en.wikipedia.org/wiki/Double-slit_experiment). The Ri is on Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution and Tumblr: http://ri-science.tumblr.com/ Our editorial policy: http://www.rigb.org/home/editorial-policy Subscribe for the latest science videos: http://bit.ly/RiNewsletter
Views: 1533664 The Royal Institution

15:45
Views: 666538 Frame of Essence

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How SSL works by leadingcoder. This is a full tutorial how to setup SSL that requires client certificate for reference: http://www.windowsecurity.com/articles/Client-Certificate-Authentication-IIS6.html .
Views: 1410659 tubewar

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A beginner's guide to Transposition Ciphers (Encryption/Decryption).
Views: 83008 Daniel Rees

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This episode is brought to you by Squarespace: http://www.squarespace.com/physicsgirl With recent high-profile security decryption cases, encryption is more important than ever. Much of your browser usage and your smartphone data is encrypted. But what does that process actually entail? And when computers get smarter and faster due to advances in quantum physics, how will encryption keep up? http://physicsgirl.org/ ‪http://twitter.com/thephysicsgirl ‪http://facebook.com/thephysicsgirl ‪http://instagram.com/thephysicsgirl http://physicsgirl.org/ Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2 Creator/Editor: Dianna Cowern Writer: Sophia Chen Animator: Kyle Norby Special thanks to Nathan Lysne Source: http://gva.noekeon.org/QCandSKD/QCand... http://physicsworld.com/cws/article/n... https://epic.org/crypto/export_contro... http://fas.org/irp/offdocs/eo_crypt_9... Music: APM and YouTube
Views: 272435 Physics Girl

13:56
Information Security: Principles and Practice, 2nd edition, by Mark Stamp Chapter 3: Symmetric Key Crypto Sections 3.1-3.2.1 stream ciphers, A5/1, shift registers Class Lecture, 2011
Views: 27905 Mark Stamp

01:22:01
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 covers the basics of cryptography, including desirable properties of cryptographic functions, and their applications to security. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 72501 MIT OpenCourseWare

01:12:02
Public key cryptography and digital signatures. Lecture 6 of ITS335 IT Security at Sirindhorn International Institute of Technology, Thammasat University. Given on 28 November 2013 at Bangkadi, Pathumthani, Thailand by Steven Gordon. Course material via: http://sandilands.info/sgordon/teaching
Views: 1963 Steven Gordon

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This lesson explains how to encrypt and decrypt a message using a transposition cipher. Site: http://mathispower4u.com
Views: 62432 Mathispower4u

06:40
Views: 224335 Code.org

09:44
How do instant message apps do end to end encryption when one phone may not even be switched on yet? Dr Mike Pound on the Signal protocol at the core of most messaging apps. Double Ratchet: 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: 132910 Computerphile

04:59
Explanation of how asymmetric key encryption works. Part of a secure engineering web app found here: http://www.ibm.biz/ek-ibmz Music by www.bensound.com IBM Contact: Bryan Childs
Views: 397 IBM Developer

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Information Security: Principles and Practice, 2nd edition, by Mark Stamp Chapter 2: Crypto Basics Sections 2.3.4-2.3.5 double transposition, one-time pad Class Lecture, 2011
Views: 20412 Mark Stamp

29:18
Tradeoffs of centralised and decentralised key distribution. Performance of public vs symmetric key crypto in OpenSSL. Course material via: http://sandilands.info/sgordon/teaching
Views: 1122 Steven Gordon

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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: 51336 PBS Infinite Series

09:06
DES -- Data Encryption Standard -- has been the workhorse of modern cryptography for many decades. It has never been compromised mathematically (not in the open literature, at least), yet, its design notes were never made public either. Many who use it are unaware of how it works. Here we open the DES box and find inside a repetition of sub-boxes in which very simple primitives are at work: substitution, transposition, split, concatenation, and bit-wise operation. DES inside teaches us that complexity is comprised of a lot of simplicity.
Views: 143439 Gideon Samid

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Private key Cryptography is explored from the Caesar Cipher to the one-time pad. We introduce encryption, decryption, ciphers, cryptanalysis and what it means to design a strong cipher. Finally perfect secrecy is explained with the invention of the one-time pad.
Views: 38098 Art of the Problem

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Views: 10995 Internetwork Security

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Information Security: Principles and Practice, 2nd edition, by Mark Stamp Chapter 3: Symmetric Key Crypto Section 3.3.4 block ciphers, AES Class Lecture, 2011
Views: 7470 Mark Stamp

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Views: 4706 The Crypto Lark

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Views: 3714 Ghosts619

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#cryptograpgy#symmetrickey#asymmetric#network
Views: 185 Study Fever

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As technology increases, so do the methods of encryption and decryption we have at our disposal. World War II saw wide use of various codes from substitution ciphers to employing Navajo code talkers in the Pacific theater. Here, science journalist and author Simon Singh demonstrates the German enigma machine, a typewriter-like device used to encrypt communications. He demonstrates not only its operation, but both the strength and fatal flaws in its method. 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
Views: 490156 World Science Festival

02:43:05
Donate: https://www.twitchalerts.com/donate/kross How I Record & Stream - http://e.lga.to/Kross Save \$ on Games! - https://www.g2a.com/r/kross Click to Subscribe http://bit.ly/12cNy1C Follow me! https://twitter.com/Kross https://facebook.com/Kross https://instagram.com/danielkrossyt Click to Subscribe http://bit.ly/12cNy1C ▼ You can find T-shirts, Hoodies and more at http://Kross-Store.com
Views: 7582 Daniel Kross

18:11
Views: 8268 The Crypto Lark

01:48
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 2171 Udacity

28:37
Elliptic Curve Cryptography (ECC) is hot. Far better scalable than traditional encryption, more and more data and networks are being protected using ECC. Not many people know the gory details of ECC though, which given its increasing prevalence is a very bad thing. In this presentation I will turn all members of the audience into ECC experts who will be able to implement the relevant algorithms and also audit existing implementations to find weaknesses or backdoors. Actually, I won't. To fully understand ECC to a point where you could use it in practice, you would need to spend years inside university lecture rooms to study number theory, geometry and software engineering. And then you can probably still be fooled by a backdoored implementation. What I will do, however, is explain the basics of ECC. I'll skip over the gory maths (it will help if you can add up, but that's about the extent of it) and explain how this funny thing referred to as "point addition on curves" can be used to exchange a secret code between two entities over a public connection. I will also explain how the infamous backdoor in Dual_EC_DRGB (a random number generator that uses the same kind of maths) worked. At the end of the presentation, you'll still not be able to find such backdoors yourselves and you probably realise you never will. But you will be able to understand articles about ECC a little better. And, hopefully, you will be convinced it is important that we educate more people to become ECC-experts.
Views: 24184 Security BSides London

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NEW COURSE: https://chartguys.com/courses/entries-exits/ Introduction to Technical Analysis for Beginners Technical Analysis Basics Technical Analysis for Beginners Introduction to Stock Charts Please Signup for a FREE trial on our website to learn Technical Analysis: We offer multiple hours of live webcam coverage a day, in addition to continuous chat room coverage. Join the community today. Chartguys.com Technical Analysis Facebook Page: https://www.facebook.com/thechartguys... Chartguys.com Technical Analysis FREE facebook community: https://www.facebook.com/groups/thech... Stocktwits: http://stocktwits.com/ChartGuysDan
Views: 523533 TheChartGuys

01:18:04
MAC and hash functions for authentication; Introduction to public key cryptography. Lecture 5 of ITS335 IT Security at Sirindhorn International Institute of Technology, Thammasat University. Given on 26 November 2013 at Bangkadi, Pathumthani, Thailand by Steven Gordon. Course material via: http://sandilands.info/sgordon/teaching
Views: 1153 Steven Gordon

20:37
A more advanced topic, we go over the Scrypt password based key derivation function which is used in popular cryptocurrencies like Litecoin!
Views: 4657 CSBreakdown

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