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Public key cryptography - Diffie-Hellman Key Exchange (full version)
 
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The history behind public key cryptography & the Diffie-Hellman key exchange algorithm. We also have a video on RSA here: https://www.youtube.com/watch?v=wXB-V_Keiu8
Views: 627624 Art of the Problem
RSA Algorithm with solved example using extended euclidean algorithm | CSS series #7
 
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#rsa #deffiehellman #cryptographylectures #lastmomenttuitions Take the Full Course of Cryptography and Network Security What we Provide 1) 20 Videos (Index is given down) + More Update will be Coming Before final exams 2)Hand made Notes with problems for your to practice 3)Strategy to Score Good Marks in Cryptography and Network Scurity To buy the course click https://goo.gl/mpbaK3 if you have any query email us at [email protected] Sample Notes : https://goo.gl/Ze1FpX or Fill the form we will contact you https://goo.gl/forms/2SO5NAhqFnjOiWvi2 Cryptography and System Security Index Lecture 1 Introduction to Cryptography and Security System Lecture 2 Security Goals and Mechanism Lecture 3 Symmetric Cipher Lecture 4 Substitution Cipher Lecture 5 Transposition Cipher Lecture 6 Stream and Block Cipher Lecture 7 Mono Alphabetic Cipher Lecture 8 Poly Alphabetic Cipher Lecture 9 Diffie Hellman Lecture 10 RSA Algorithm with Solved Example Lecture 11 IDEA Algorithm Full Working Lecture 12 SHA-1 Algorithm Full Working Lecture 13 Blowfish Algorithm Full working Lecture 14 DES Algorithm Full Working Lecture 15 Confusion and Diffusion Lecture 16 AES Algorithm Full working Lecture 17 Kerberos Lecture 18 Malicious Software ( Virus and worms ) Lecture 19 DOS and DDOS Attack Lecture 20 Digital Signature Full working Explained More videos Coming Soon.
Views: 279847 Last moment tuitions
RSA Public Key Cryptography
 
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CS1231 Group 20 To view the presentation only, visit http://youtu.be/Yf3k1c1YEuA?hd=1 Copyright, NUS, 2011 Some people asked about the source code for the C program we used, you can find the original version (not coded by us) here: http://cppgm.blogspot.com/2008/01/rsa-algorithm.html
Views: 27246 xkiller213
Elliptic Curve Cryptography(ECC) - GATE Computer Science
 
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The complete YouTube playlist can be viewed here: https://goo.gl/mjyDev This lesson explains the concept of the Elliptic Curve Cryptography(ECC), under the course, "Cryptography and Network Security for GATE Computer Science Engineering". The lesson explains the questions on the following subtopics: Elliptic Curve Cryptography(ECC) ECC - Public key cryptosystem ECC - Key Exchange ECC - Encryption and Decryption Elliptic curve Some important terminology and concepts are also illustrated, for the better understanding of the subject. For the entire course: https://goo.gl/aTMBNZ For more lessons by Ansha Pk: https://goo.gl/2DX9Wn Must watch for all the GATE/ESE/PSU Exams. Download the Unacademy Learning App from the Google Play Store here:- https://goo.gl/02OhYI Download the Unacademy Educator app from the Google Play Store here: https://goo.gl/H4LGHE Do Subscribe and be a part of the community for more such lessons here: https://goo.gl/UGFo7b Visit Our Facebook Group on GATE here: https://goo.gl/cPj5sb Elliptic Curve Cryptography(ECC) - GATE Computer Science - Unacademy
Secret Key Exchange (Diffie-Hellman) - Computerphile
 
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How do we exchange a secret key in the clear? Spoiler: We don't - Dr Mike Pound shows us exactly what happens. Mathematics bit: https://youtu.be/Yjrfm_oRO0w Computing Limit: https://youtu.be/jv2H9fp9dT8 https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 218170 Computerphile
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
Blockchain tutorial 11: Elliptic Curve key pair generation
 
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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: 17743 Mobilefish.com
Introduction to Cryptography: Part 4 (Public Key, PKI and Identity)
 
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More details at: http://asecuritysite.com/encryption and specifically at: http://asecuritysite.com/encryption/dc
Views: 5597 Bill Buchanan OBE
Digital Signatures
 
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This video is part of the Udacity course "Intro to Information Security". Watch the full course at https://www.udacity.com/course/ud459
Views: 56670 Udacity
Instant Messaging and the Signal Protocol - Computerphile
 
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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: 133028 Computerphile
Public Key Cryptography: Diffie-Hellman Key Exchange (short version)
 
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This is a segment of this full video: https://www.youtube.com/watch?v=YEBfamv-_do Diffie-Hellman key exchange was one of the earliest practical implementations of key exchange within the field of cryptography. It relies on the discrete logarithm problem. This test clip will be part of the final chapter of Gambling with Secrets!
Views: 449167 Art of the Problem
Public Key Cryptography - Max Krohn, Keybase [Code Driven by FirstMark]
 
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Code Driven NYC is a community organized by FirstMark that brings together leading developers from across the tech ecosystem to learn, get inspired, and have fun. Join the group at http://www.meetup.com/Code-Driven-NYC/ or find out more at http://codedrivennyc.com/.
Views: 565 Code Driven NYC
Public Key Cryptography w/ JAVA  (tutorial 01) - Diffie-Hellman Key Exchange
 
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Demo, Write, & Test Run, including an Intro to Group, Cyclic Group, Generator, & Discrete Logarithm Problem | Website + download source code @ http://www.zaneacademy.com | typo in server display corrected here https://youtu.be/6C5sq5TaVMs?t=90
Views: 1425 zaneacademy
Introduction to Block Ciphers (CSS322, L4, Y14)
 
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Stream ciphers vs block ciphers for symmetric key encryption; concepts of ideal block ciphers. Course material via: http://sandilands.info/sgordon/teaching
Views: 11590 Steven Gordon
Public Key Infrastructure Fundamentals - Bart Preneel
 
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The function of a public key infrastructure (PKI) is to ensure secure delivery and management of public keys. Alternative trust models lead to different key architectures. Public keys are published by means of digitally signed certificates. A private key may be compromised, in which case the certificate containing the corresponding public key must be revoked. Many revocation methods are in current use. Publication of Certificate Revocation Lists (CRLs) and checking with an Online Certificate Status Protocol (OCSP) responder are best established. Learning objectives + learn the components of a public key infrastructure. + understand key delivery and management mechanisms. A lecture by Bart Preneel at SecAppDev 2013 in Leuven, Belgium. Professor Bart Preneel of KU Leuven heads the COSIC (COmputer Security and Industrial Cryptography) research group. His main research area is information security with a focus on cryptographic algorithms and protocols as well as their applications to both computer and network security, and mobile communications. He teaches cryptology, network security and coding theory at the K.U.Leuven and was visiting professor at the Ruhr Universitaet Bochum (Germany), the T.U.Graz (Austria), the University of Bergen (Norway), and the Universiteit Gent (Belgium). In '93-'94 he was a research fellow at the University of California at Berkeley. He has taught intensive courses around the world. He undertakes industrial consulting (Mastercard International, S.W.I.F.T., Proton World International,...), and participates in the work of ISO/IEC JTC1/SC27/WG2. Professor Preneel is Vice President of the International Association for Cryptologic Research (IACR) and co-founder and chairman of LSEC vzw (Leuven Security Excellence Consortium).
Views: 51394 secappdev.org
Elliptic Curve Cryptography Overview
 
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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: 169324 F5 DevCentral
Cryptography and Network Security - Public Key Cryptography - Unacademy GATE(CSE)
 
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The complete YouTube playlist can be viewed here: https://goo.gl/mjyDev This lesson explains International Public Key Cryptography, under the course, "Cryptography and Network Security for GATE Computer Science Engineering". The lesson explains the following subtopics: Symmetric Cryptography/Private Key Cryptography Asymmetric Cryptography/Public Key Cryptography Public Key Cryptography - Authentication Public Key Cryptography - Applications Some important terminology and concepts are also illustrated, for the better understanding of the subject. For the entire course: https://goo.gl/aTMBNZ For more lessons by Ansha Pk: https://goo.gl/2DX9Wn Must watch for all the GATE/ESE/PSU Exams. Download the Unacademy Learning App from the Google Play Store here:- https://goo.gl/02OhYI Download the Unacademy Educator app from the Google Play Store here: https://goo.gl/H4LGHE Do Subscribe and be a part of the community for more such lessons here: https://goo.gl/UGFo7b Visit Our Facebook Group on GATE here: https://goo.gl/cPj5sb Cryptography and Network Security - Public Key Cryptography - Unacademy GATE(CSE)
Cryptographic Algorithms - Bart Preneel
 
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Messages have been encrypted for millennia. Successfully hiding the plaintext has required increasingly sophisticated algorithms to defeat advances in crypto-analysis. Claude Shannon proved information theoretic security of the Vernam scheme, a.k.a. one-time pad. Since a one-time pad must be as long as the plaintext and can only be used once, the method is not widely used. Complexity theoretic security provides less strong but more practical security guarantees. Encryption provides confidentiality. In order to also ensure data authenticity, additional techniques are needed, such as Message Authentication Codes (MAC) or hashing. Alternatively, authenticated encryption combines confidentiality and data authenticity. Users of symmetric cryptography need to share a key between communicating parties. This is hard to do securely. Public key cryptology addresses this key distribution problem. Moreover, it affords digital signatures. In practice, public key cryptography is too slow to encrypt large amounts of data. Hence it is used for key agreement. A lecture by Bart Preneel at SecAppDev 2015 in Leuven, Belgium. Professor Bart Preneel of KU Leuven heads the COSIC (COmputer Security and Industrial Cryptography) research group. His main research area is information security with a focus on cryptographic algorithms and protocols as well as their applications to both computer and network security, and mobile communications. He teaches cryptology, network security and coding theory at the K.U.Leuven and was visiting professor at the Ruhr Universitaet Bochum (Germany), the T.U.Graz (Austria), the University of Bergen (Norway), and the Universiteit Gent (Belgium). In '93-'94 he was a research fellow at the University of California at Berkeley. He has taught intensive courses around the world. He undertakes industrial consulting (Mastercard International, S.W.I.F.T., Proton World International,...), and participates in the work of ISO/IEC JTC1/SC27/WG2. Professor Preneel is Vice President of the International Association for Cryptologic Research (IACR) and co-founder and chairman of LSEC vzw (Leuven Security Excellence Consortium).
Views: 976 secappdev.org
The Twofish Encryption Algorithm
 
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Twofish is a block cipher by Counterpane Labs, published in 1998. It was one of the five Advanced Encryption Standard (AES) finalists, and was not selected as AES. Twofish has a 128-bit block size, a key size ranging from 128 to 256 bits, and is optimized for 32-bit CPUs. Currently there is no successful cryptanalysis of Twofish. https://www.schneier.com/academic/twofish/ This animation is designed by Abdullah AlQahtani [email protected]
Views: 11024 Hemaya Group
Diffie-Hellman Key Exchange
 
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This video explains why key exchange is an issue in cryptography and introduces Diffie-Hellman's solution to this problem. NB : This video was created as a part of an assignment. It is heavily influenced from another youtube video which you can find here https://www.youtube.com/watch?v=YEBfamv-_do
Views: 48539 Bishal Sapkota
ISRO DEC 2017 Q29 Using public key cryptography, X adds a digital signature σ to a message M,
 
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ISRO DEC 2017 Question Paper Complete Solution Q 29. Using public key cryptography, X adds a digital signature σ to a message M, encrypts M,σ and sends it to Y, where it is decrypted. Which one of the following sequence of keys is used for operations? (a) Encryption : X’s private key followed by Y’s private key. Decryption : X’s public key followed by Y’s public key (b) Encryption : X’s private key followed by Y’s public key; Decryption : X’s public key followed by Y’s private key (c) Encryption : X’s private key followed by Y’s public key; Decryption : Y’s private key followed by X’s public key (d) Encryption : X’s public key followed by Y’s private key; Decryption : Y’s public key followed by X’s private key. Gate Helpline helps you in gate notifications, PSU, previous year papers, gate admit card, gate cutoff marks, gate results, scorecard, gate helpline number etc Gate Helpline provides a unique feature of Question Answer Discussion. Gate Virtual Calculator Download link: https://play.google.com/store/apps/details?id=com.gatehelpline.apoorva.myapplication.myapplication Gate Helpline Youtube Channel: http://www.youtube.com/c/Gatehelpline WhatsApp Group: https://chat.whatsapp.com/invite/9UOt4id7L5X6WAYU9WvgWH Gate Helpline: http://gatehelpline.com/ Gate Helpline Fb: https://www.facebook.com/gatehelplinedotcom Gate Helpline Twitter: https://twitter.com/gatehelpline Gate Helpline Google+: https://plus.google.com/+Gatehelpline Gate Helpline Study Group: https://www.facebook.com/groups/GateHelplineStudyGroup/
Views: 107 Gate Helpline
Difference between Public key and Private key  Cryptography(Part 2)
 
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This channel is all about crypto currency education so watch, understand and get benefit of upcoming revolution.....
Views: 402 Dream Big
Cryptography and Network Security - RSA Algorithm - GATE(CSE) - Unacademy
 
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The complete YouTube playlist can be viewed here: https://goo.gl/mjyDev This lesson explains IRSA Algorithm, under the course, "Cryptography and Network Security for GATE Computer Science Engineering". The lesson explains the following subtopics: RSA Algorithm Key Generation Encryption & Decryption Some important terminology and concepts are also illustrated, for the better understanding of the subject. For the entire course: https://goo.gl/aTMBNZ For more lessons by Ansha Pk: https://goo.gl/2DX9Wn Must watch for all the GATE/ESE/PSU Exams. Download the Unacademy Learning App from the Google Play Store here:- https://goo.gl/02OhYI Download the Unacademy Educator app from the Google Play Store here: https://goo.gl/H4LGHE Do Subscribe and be a part of the community for more such lessons here: https://goo.gl/UGFo7b Visit Our Facebook Group on GATE here: https://goo.gl/cPj5sb Cryptography and Network Security - Public Key Cryptography - Unacademy GATE(CSE)
Lecture 13: Diffie-Hellman Key Exchange and the Discrete Log Problem by Christof Paar
 
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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
Cryptography RSA algorithm (BCA, MCA) by Mrs. Rashmi Sharma
 
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It is part of lecturer provided by Mrs. Rashmi Sharma, Asst. Prof. in Biyani Group of colleges on behalf of gurukpo.This lecturer is about RSA algorithm which is more secure cryptographic algorithm. It is more secure Asymmetric key algorithm. It is 70 times more secure then Symmetric key algorithm (e.g. DES) Hope you like it for more videos and study material please visit http://www.Gurukpo.com.
Views: 21669 Guru Kpo
RSA-129 - Numberphile
 
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The large number "RSA-129" posed a challenge experts said would take 40 quadrillion years to solve - but took 17. Featuring Ron Rivest, co-inventor of RSA... More links below... Our original RSA video (how it all works): https://youtu.be/M7kEpw1tn50 More from Ron from this interview (quantum computing): https://youtu.be/tX7e7CgWrvM More Ron Rivest on Numberphile: http://bit.ly/RonRivest Ron Rivest's own website: https://people.csail.mit.edu/rivest/ Public Key Cryptography on our sister channel, Computerphile: https://youtu.be/GSIDS_lvRv4 RSA-129: 114381625757888867669235779976146612010218296721242362562561842935706935245733897830597123563958705058989075147599290026879543541 Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady Haran Patreon: http://www.patreon.com/numberphile Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9
Views: 398226 Numberphile
Symmetric and Asymmetric Encryption - CompTIA Security+ SY0-501 - 6.1
 
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Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Frequently Asked Questions: http://professormesser.link/faq - - - - - If you’re planning to implement cryptography, then you’ll probably be using either symmetric encryption or asymmetric encryption. In this video, you’ll learn about both of these valuable encryption mechanisms. - - - - - Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 22617 Professor Messer
Public Key Cryptography: Secrecy in Public - Professor Raymond Flood
 
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For centuries massive intellectual effort has gone into methods of ensuring secure communication, because of its importance in diplomatic, commercial and military affairs. Up until recently these methods have relied on the exchange of a secret key or protocol between correspondents. Now, however, a new approach based on mathematics, called public key cryptography, is used and this underlies much of modern commerce and how you pay over the internet. The transcript and downloadable versions of the lecture are available from the Gresham College website: http://www.gresham.ac.uk/lectures-and-events/public-key-cryptography-secrecy-in-public Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There are currently over 1,500 lectures free to access or download from the website. Website: http://www.gresham.ac.uk Twitter: http://twitter.com/GreshamCollege Facebook: https://www.facebook.com/greshamcollege
Views: 12714 Gresham College
Elliptic Curve (ECC) with example - Cryptography lecture series
 
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In this lecture series, you will be learning about cryptography basic concepts and examples related to it. Elliptic Curve (ECC) with example (ECC) with example.
Views: 21877 Eezytutorials
The concept of symmetric and asymmetric cryptography
 
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In this Video, Dr. Seema Batra, Assistant professor, Biyani Groups of Colleges, Jaipur, explains about the concept of symmetric and asymmetric cryptography. http://www.gurukpo.com/ http://www.biyanicolleges.org/
Views: 12807 Guru Kpo
21. Cryptography: Hash Functions
 
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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 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: 72565 MIT OpenCourseWare
Block Cipher
 
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Views: 15457 Internetwork Security
What's Up With Group Messaging? - Computerphile
 
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Why encrypted group messaging isn't as secure as point to point. Dr Mike Pound explains this ongoing problem. Instant Messaging & the Signal Protocol: https://youtu.be/DXv1boalsDI Double Ratchet Messaging Encryption: https://youtu.be/9sO2qdTci-s Relevant paper: https://eprint.iacr.org/2017/666.pdf 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: 172160 Computerphile
What is asymmetric encryption?
 
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In symmetric key encryption the same key is used for both encryption and decryption. In contrast, in asymmetric key encryption a public key (known to everyone) is used for encryption and a private key (known only to the recipient) is used for decryption. Many asymmetric key encryption approaches are based on factoring as a trapdoor function, with the public key being the multiple of the two secret primes and the private key being the two secret primes. Asymmetric key encryption allows one party to encrypt a message to a second party they have never communicated with previously. Credits: Talking: Geoffrey Challen (Assistant Professor, Computer Science and Engineering, University at Buffalo). Producing: Greg Bunyea (Undergraduate, Computer Science and Engineering, University at Buffalo). Part of the https://www.internet-class.org online internet course. A blue Systems Research Group (https://blue.cse.buffalo.edu) production.
Views: 923 internet-class
[HINDI] What is Public Key Cryptography (PKC)? | Types of Asymmetric Encryption | Working Explained
 
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Hello everyone. This is a very important video in terms of Information security and cryptography, where I will brief you about public key cryptosystem which is a part of Public Key Infrastructure (PKI) ussed for modern day data encryption. I will explain what were the loopholes in the previous systems, how this works, what are its advantages, types and possible loopholes in this system. SO DON'T MISS THIS ONE LET'S GET STARTED!!! --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Official Website: https://bitten.tech Download my OFFICIAL APP to learn ethical Hacking FREE: https://play.google.com/store/apps/details?id=com.bittentech.bittentech Follow this link to join my Telelgram group: https://t.me/joinchat/LtZhHBBcp_BgVzoRIROKUQ Follow me on Instagram : https://instagram.com/ansh.98 Like me on Facebook : https://linksad.net/qUUBB ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- If you liked my video, please don't forget to press the like button and subscribe to my youtube channel. I will be posting videos on cyber security, ethical hacking and technology. Also some interesting tricks and techniques very soon so stay tuned and please SUBSCRIBE to my channel and thanks for watching....:-)
Views: 379 Bitten Tech
Entity Authentication and Symmetric Key Establishment - Bart Preneel
 
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Entity Authentication and Symmetric Key Establishment, by Bart Preneel Authentication methods are based on something known, owned, biometric, location or evidence of trusted third party authentication. + A password is a case of something known. Passwords are a vulnerable, but cheap and convenient way of authenticating an entity. Several techniques to augment their effectiveness are in use including challenge-response and one-time passwords. + Secure devices such as smart cards and USB tokens often combine the 'owned' with the 'known', since secret keys are locked in the token with a password or PIN code. However, within the broad category of secure tokens, trustworthiness is variable, depending on whether keys can be extracted, passwords can be eavesdropped or the device can be tampered with. + Biometry identifies a person via physical characteristics. + Location is often used as the sole authentication factor, but is insecure given the relative ease of spoofing IP or MAC addresses. + Multi-factor authentication is stronger than single-factor. + The Kerberos protocol uses a key distribution-based authentication server. Service consumers must authenticate with a central server to obtain a secret session key with service providers. Such schemes require a single sign-on to access servers across a trust domain. While public key cryptography is well suited to entity authentication, performance constraints often mandate a symmetric algorithm for encrypting data passed between systems. Key establishment should be linked to authentication, so that a party has assurances that a key is only shared with the authenticated party. The Diffie-Hellman key agreement protocol underlies a host of current technologies such as STS (Station-to-Station protocol) and IKE. Learning objectives Gain insight into + entity authentication protocols, + the benefits and limitations of authentication factors, + key establishment protocols, + why and how to use authentication servers. This lecture was delivered by Bart Preneel in Leuven on Tuesday February 11th at SecAppDev 2014. Professor Bart Preneel heads the COSIC (COmputer Security and Industrial Cryptography) research group at KU Leuven. His main research area is information security with a focus on cryptographic algorithms and protocols as well as their applications to both computer and network security, and mobile communications. He teaches cryptology, network security and coding theory at the KU Leuven and was visiting professor at the Ruhr Universitaet Bochum (Germany), the T.U.Graz (Austria), the University of Bergen (Norway), and the Universiteit Gent (Belgium). In '93-'94 he was a research fellow at the University of California at Berkeley. He has taught intensive courses around the world. He undertakes industrial consulting (Mastercard International, S.W.I.F.T., Proton World International,...), and participates in the work of ISO/IEC JTC1/SC27/WG2. Professor Preneel is Vice President of the International Association for Cryptologic Research (IACR) and co-founder and chairman of LSEC vzw (Leuven Security Excellence Consortium).
Views: 1512 secappdev.org
Ciphertext-Policy Attribute-Based Encryption
 
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Demo: https://asecuritysite.com/encryption/abe02
Views: 444 Bill Buchanan OBE
Cryptography - RSA
 
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A beginners guide to RSA Public Key Encryption (Cryptography). This video covers detailed explanation on RSA Key Generation, Key Distribution, and Implementation. InCTFj is a Capture The Flag contest exclusive for school students in India. REGISTER NOW : https://junior.inctf.in/ Learning Resources : https://wiki.bi0s.in/ Brought you by: teambi0s : https://bi0s.in/ Amrita University : https://www.amrita.edu/
Views: 1686 Amrita InCTF Junior
Diffie Hellman Key Exchange
 
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http://spirent.com Diffie Hellman Key Exchange and how it operates. Also a quick overview of AES and the basics of encryption.
Views: 58678 alantalkstech
Cryptography and Network Security - Digital Signature Algorithm(DSA) - GATE(CSE)
 
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The complete YouTube playlist can be viewed here: https://goo.gl/mjyDev This lesson explains the concept of Digital Signature Algorithm(DSA), under the course, "Cryptography and Network Security for GATE Computer Science Engineering". The lesson illustrated the concept of the Digital Signature Algorithm(DSA), RSA approach to digital signature and DSS approach to the digital signature. Some important terminology and concepts are also illustrated, for the better understanding of the subject. For the entire course: https://goo.gl/aTMBNZ For more lessons by Ansha Pk: https://goo.gl/2DX9Wn Must watch for all the GATE/ESE/PSU Exams. Download the Unacademy Learning App from the Google Play Store here:- https://goo.gl/02OhYI Download the Unacademy Educator app from the Google Play Store here: https://goo.gl/H4LGHE Do Subscribe and be a part of the community for more such lessons here: https://goo.gl/UGFo7b Visit Our Facebook Group on GATE here: https://goo.gl/cPj5sb Cryptography and Network Security - Digital Signature Algorithm(DSA) - GATE(CSE)
Cryptography and Network Security - Data Encryption Standard(Part 1) - GATE(CSE)
 
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The complete YouTube playlist can be viewed here: https://goo.gl/mjyDev This lesson explains Data Encryption Standard, under the course, "Cryptography and Network Security for GATE Computer Science Engineering". Some important terminology and concepts are also illustrated, for the better understanding of the subject. For the entire course: https://goo.gl/aTMBNZ For more lessons by Ansha Pk: https://goo.gl/2DX9Wn Must watch for all the GATE/ESE/PSU Exams. Download the Unacademy Learning App from the Google Play Store here:- https://goo.gl/02OhYI Download the Unacademy Educator app from the Google Play Store here: https://goo.gl/H4LGHE Do Subscribe and be a part of the community for more such lessons here: https://goo.gl/UGFo7b Visit Our Facebook Group on GATE here: https://goo.gl/cPj5sb Cryptography and Network Security - Data Encryption Standard (Part1) - GATE(CSE)
Digital Signature Schemes
 
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A video I have created that addresses and explains the fundamentals of Digital Signature Schemes.
Views: 681 AgniAsmi
How secure is 256 bit security?
 
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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: 1016202 3Blue1Brown
NIST Calls Development of Quantum Proof Encryption Algorithms
 
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#United States' National Institute of Standards and #Technology "With the public's participation," #NIST's Cryptographic Technology Group says in a blog post (https://goo.gl/DZRVhS), "NIST intends to spend the next few years gathering, testing and ultimately recommending new algorithms that would be less susceptible to a quantum computer's attack." The development of "new public-key cryptography standards will specify one or more additional unclassified, publicly disclosed digital signature, public-key encryption, and key establishment algorithms that are capable of protecting sensitive government information well into the foreseeable future, including after the advent of quantum computers," the agency says (https://goo.gl/8rnFmH). -------------------------------------- You can see the playlist: - Breaking news: https://goo.gl/wyqG6i - Life skills: https://goo.gl/UoRrct - SE Optimization: https://goo.gl/XDkc17 *Website: http://ictblogs.net/ *Facebook: http://facebook.com/vnwpages/ *Twitter: https://twitter.com/ictblogsnet
Views: 283 ICT Blog's
ECC vs RSA: Battle of the Crypto-Ninjas
 
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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: 577 Parleys
Daniele Micciancio - Lattice-based public-key cryptography #2
 
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Daniele Micciancio of the University of California, San Diego presented an invited talk on lattice-based public key cryptography at the 2014 PQCrypto summer school in October, 2014. This is part 2 of the talk. PQCrypto Summer School: https://pqcrypto2014.uwaterloo.ca/summer-school/ Find out more about IQC! Website - https://uwaterloo.ca/institute-for-qu... Facebook - https://www.facebook.com/QuantumIQC Twitter - https://twitter.com/QuantumIQC