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Pseudorandom number generators | Computer Science | Khan Academy
 
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Random vs. Pseudorandom Number Generators Watch the next lesson: https://www.khanacademy.org/computing/computer-science/cryptography/modern-crypt/v/the-fundamental-theorem-of-arithmetic-1?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/perfect-secrecy?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Computer Science on Khan Academy: Learn select topics from computer science - algorithms (how we solve common problems in computer science and measure the efficiency of our solutions), cryptography (how we protect secret information), and information theory (how we encode and compress information). About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Computer Science channel: https://www.youtube.com/channel/UC8uHgAVBOy5h1fDsjQghWCw?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 160047 Khan Academy Labs
Random bytes and  random int functions
 
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Two new functions have been added to generate cryptographically secure integers and strings in a cross platform way: random_bytes() and random_int().
Views: 1049 Avelx
Black Hat USA 2012 - PRNG Pwning Random Number Generators (In PHP Applications)
 
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By: George Argyros & Aggelos Kiayias We present a number of novel, practical, techniques for exploiting randomness vulnerabilities in PHP applications. We focus on the predictability of password reset tokens and demonstrate how an attacker can take over user accounts in a web application via predicting the PHP core randomness generators. Our suite of new techniques and tools go far beyond previously known attacks (e.g. Kamkar and Esser) and can be used to mount attacks against all PRNG of the PHP core system even when it is hardened with the Suhosin extension. Using them we demonstrate how to create practical attacks for a number of very popular PHP applications (including Mediawiki, Gallery, osCommerce and Joomla) that result in the complete take over of arbitrary user accounts. While our techniques are designed for the PHP language, the principles behind ]them are independent of PHP and readily apply to any system that utilizes weak randomness generators or low entropy sources. We will also release tools that assist in the exploitation of randomness vulnerabilities and exploits for some vulnerable applications.
Views: 1111 Black Hat
Salted Password Scheme - Applied Cryptography
 
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This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 14224 Udacity
The Randomness Problem: How Lava Lamps Protect the Internet
 
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Go to https://Brilliant.org/SciShow to get 20% off of an annual Premium subscription! Randomness is important for all kinds of things, from science to security, but to generate true randomness, engineers have turned to some pretty odd tricks! Hosted by: Stefan Chin Head to https://scishowfinds.com/ for hand selected artifacts of the universe! ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Lazarus G, Sam Lutfi, D.A. Noe, الخليفي سلطان, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters ---------- 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: https://www.wired.com/story/cloudflare-lava-lamps-protect-from-hackers/ https://sploid.gizmodo.com/one-of-the-secrets-guarding-the-secure-internet-is-a-wa-1820188866 https://www.fastcompany.com/90137157/the-hardest-working-office-design-in-america-encrypts-your-data-with-lava-lamps https://www.nytimes.com/2001/06/12/science/connoisseurs-of-chaos-offer-a-valuable-product-randomness.html https://blog.cloudflare.com/why-randomness-matters/ https://www.design-reuse.com/articles/27050/true-randomness-in-cryptography.html https://www.random.org/randomness/ https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-856j-randomized-algorithms-fall-2002/lecture-notes/ https://link.springer.com/chapter/10.1007/978-3-319-26300-7_3 https://www.maa.org/sites/default/files/pdf/upload_library/22/Ford/Volchan46-63.pdf https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-22r1a.pdf http://www.iro.umontreal.ca/~simardr/testu01/guideshorttestu01.pdf https://www.rand.org/pubs/monograph_reports/MR1418/index2.html https://www.rand.org/content/dam/rand/pubs/papers/2008/P113.pdf https://docs.microsoft.com/en-us/windows/desktop/secauthn/tls-handshake-protocol https://tools.ietf.org/html/rfc2246#page-47 https://ops.fhwa.dot.gov/trafficanalysistools/tat_vol3/vol3_guidelines.pdf https://ocw.mit.edu/courses/aeronautics-and-astronautics/16-36-communication-systems-engineering-spring-2009/lecture-notes/MIT16_36s09_lec21_22.pdf https://telescoper.wordpress.com/2009/04/04/points-and-poisson-davril/ https://auto.howstuffworks.com/remote-entry2.htm https://web.archive.org/web/20070315010555/https://cigital.com/papers/download/developer_gambling.php Images: https://commons.wikimedia.org/wiki/File:Middle-square_method.svg https://www.youtube.com/watch?v=zdW6nTNWbkc https://commons.wikimedia.org/wiki/File:Sun-crypto-accelerator-1000.jpg
Views: 400364 SciShow
PHP 7 - CSPRNG
 
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PHP 7 - CSPRNG https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Malhar Lathkar, Tutorials Point India Private Limited
Abusing weak PRNGs in PHP applications
 
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Abusing Mersenne Twister (mt_rand()) in PHP. A PoC exploit resets the admin password on a PunBB forum provided that there is a PHP-Nuke installation on the same server and it supports Keep-Alive requests. A rainbow table is used for faster seed cracking.
Views: 1596 gat3way
Bsides LV 2014 - Untwisting The Mersenne Twister: How I killed the PRNG - 05Aug2014
 
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05 Aug 2014 - Bsides Las Vegas 2014 Joe "moloch" - Bishop Fox Dan "AltF4" Petro - Bishop Fox http://www.bishopfox.com http://www.bishopfox.com/blog/2014/08/untwisting-mersenne-twister-killed-prng/ http://www.irongeek.com/i.php?page=videos/bsideslasvegas2014/bg04-untwisting-the-mersenne-twister-how-i-killed-the-prng-moloch Untwisting The Mersenne Twister: How I killed the PRNG Applications rely on generating random numbers to provide security, and fail catastrophically when these numbers turn out to be not so “random.” For penetration testers, however, the ability to exploit these systems has always been just out of reach. To solve this problem, we’ve created “untwister:” an attack tool for breaking insecure random number generators and recovering the initial seed. We did all the hard math, so you don't have to! Random numbers are often used in security contexts for generating unique IDs, new passwords for resets, or cryptographic nonces. However, the built-in random number generators for most languages and frameworks are insecure, leaving applications open to a series of previously theoretical attacks. Lots of papers have been written on PRNG security, but there's still almost nothing practical you can use as a pentester to actually break live systems in the wild. This talk focuses on weaponizing what used to be theoretical into our tool: untwister. Let's finally put rand() to rest. DISCLAIMER: This video is intended for pentesting training purposes only.
Views: 4224 Bishop Fox
How do we know our PRNGs work properly? (33c3)
 
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https://media.ccc.de/v/33c3-8099-how_do_we_know_our_prngs_work_properly Pseudo-random number generators (PRNGs) are critical pieces of security infrastructure. Yet, PRNGs are surprisingly difficult to design, implement, and debug. The PRNG vulnerability that we recently found in GnuPG/Libgcrypt (CVE-2016-6313) survived 18 years of service and several expert audits. In this presentation, we not only describe the details of the flaw but, based on our research, explain why the current state of PRNG implementation and quality assurance downright provokes incidents. We also present a PRNG analysis method that we developed and give specific recommendations to implementors of software producing or consuming pseudo-random numbers to ensure correctness. Vladimir Klebanov Felix Dörre
Views: 1034 media.ccc.de
File Encryption - Applied Cryptography
 
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This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 1999 Udacity
How a PRNG Might Work
 
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How a pseudo random number generator might work online
Views: 2048 realdealpoker1
Why I use a custom PRNG (and other features)
 
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In today's episode I did a bunch of polish on the game loop for my Roguelike Space Opera and ported some custom PRNG to gdscript. Music ► https://www.bensound.com Website ► https://www.ombarus.com Github ► https://github.com/Ombarus/DiceThrowCor Email ► [email protected] Twitter ► @Ombarus1 My name is Ombarus and I'm a programmer / game developer from Canada who recently moved to Japan and decided to try my own luck with game dev.
Views: 46 Ombarus
Attacking the Linux PRNG on Android
 
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By Sagi Kedmi "Android is the most prevalent Linux-based mobile operating system on the market today. Many features of the platform security (such as Address Space Layout Randomization (ALSR), stack protection, key generation, etc.) are based on values provided by the Linux Pseudorandom Number Generator (LPRNG) and weaknesses in the LPRNG could therefore directly affect platform security. Much literature has been published previously investigating and detailing such weaknesses in the LPRNG. We build upon this prior work and show that - given a leak of a random value extracted from the LPRNG - a practical, inexpensive attack against the LPRNG internal state in early boot is feasible. Furthermore, the version of the Linux kernel vulnerable to such an attack is used in the majority of Android-based mobile devices in circulation. We also leverage the Cloud in order to present two real-world exploitation vectors that could be enabled by such an attack (one of which will be demoed). Finally, we discuss current mitigations and highlight lessons that can be learned in respect to the design and use of future PRNGs for security features on embedded platforms."
Views: 2788 Black Hat
Encryption Part I: Introduction to Encryption 4
 
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The 4th video in this series, covering random numbers and how to generate them. One more note about the diode diagram: it would have been more clear if I'd put in the polarity signs. The negative pole is on the left, and the electrons are repelled by it, meaning they're trying to move across the diode to the right. That particular diode is reverse biased, which SHOULD make that the equivalent of an open circuit. But the diode is so small that the electrons can tunnel through via quantum mechanics, resulting in a signal that can be used as a source of entropy. Here's more about diodes, including a diagram showing what happens with reverse bias: https://learn.sparkfun.com/tutorials/diodes GNU Privacy Guard: https://www.gnupg.org/ The Android Bitcoin wallet flaw http://android-developers.blogspot.com/2013/08/some-securerandom-thoughts.html
Views: 18426 Shane Killian
bg04 untwisting the mersenne twister how i killed the prng moloch
 
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These are the videos from BSidesLV (Las Vegas) 2014: http://www.irongeek.com/i.php?page=videos/bsideslasvegas2014/mainlist
Views: 938 Adrian Crenshaw
Beginner PHP Tutorial   60   Random Number Generation flv
 
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PhP Tutorial for Beginners, PhP, PhP Tutorial in hindi, PhP Tutorial for Beginners wiTh examPles, PhP ProjecT sTeP By sTeP, PhPacademy, PhP mysql Tutorial, PhP Programming, PhP Tutorial for Beginners dreamweaver, PhP advanced Tutorial, PhP ProjecT, PhP Tutorial for Beginners in hindi, PhP Basic Tutorial, hTml Tutorial for Beginners, hTml, hTml5, hTml5 and css3 Tutorial, hTml Tutorial for Beginners in hindi, hTml5 Tutorial , hTml5 Tutorial for Beginners wiTh examPles, hTml weBsiTe design Tutorial, hTml Tutorial for Beginners in Telugu, hTml5 comPleTe Tutorial, sql Tutorial, sql Tutorial for Beginners wiTh examPles, sql server 2008 Tutorial for Beginners, sql server 2012 Tutorial for Beginners, sql, sql server inTerview quesTions and answers for exPerienced, sql queries Tutorial, sql joins, sql injecTion Tutorial
Views: 67 yt learning
Winter School on Cryptography Symmetric Encryption: Pseudorandom generators - Benny Applebaum
 
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Pseudorandom generators (definitions and constructions; the hybrid method), a lecture by Benny Applebaum. The topic of the 4th Annual Bar-Ilan Winter School on Cryptography held in January 2014, was Symmetric Encryption in Theory and in Practice. The winter school studied symmetric encryption in theory and in practice, and included a study of the theoretical foundations of symmetric encryption on the one hand, and practical constructions and cryptanalysis on the other hand. As every year, the event organizers were Prof. Yehuda Lindell and Prof. Benny Pinkas, of BIU's Department of Computer Science. This year,the Winter School featured speakers from such institutions as the Royal Holloway at the University of London , and the University of Wisconsin - Madison. For all videos of this playlist: https://www.youtube.com/playlist?list=PLXF_IJaFk-9BmvxWhnxPId32CPJhVtU6D 4th Annual Bar-Ilan Winter School on Cryptography: http://crypto.biu.ac.il/winterschool2014/ Prof. Lindell's Lab http://www1.biu.ac.il/indexE.php?id=8043&pt=30&pid=7711&level=2&cPath=7702,7711,8043 Prof. Pinkas' Lab http://www1.biu.ac.il/indexE.php?id=8046&pt=30&cPath=7702,7711,8046 Dept. of Computer Science: http://cs.biu.ac.il/en/ Bar-Ilan University: http://www1.biu.ac.il/en
Views: 709 barilanuniversity
Password Cracking - Computerphile
 
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'Beast' cracks billions of passwords a second, Dr Mike Pound demonstrates why you should probably change your passwords... Please note,at one point during the video Mike suggests using SHA512. Please check whatever the recommended process is at the time you view the video. Here's a look at 'Beast': https://www.youtube.com/watch?v=RG2Z7Xgthb4 How NOT to Store Passwords: https://youtu.be/8ZtInClXe1Q Password Choice: https://youtu.be/3NjQ9b3pgIg Deep Learning: https://youtu.be/l42lr8AlrHk Cookie Stealing: https://youtu.be/T1QEs3mdJoc http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 1543267 Computerphile
Game Engine Tutorial [013] - Mersenne Twister Theorie
 
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Vielen Dank an meine Unterstützer auf Patreon: https://www.patreon.com/Brotcrunsher Liked meine Facebook Seite: http://www.facebook.com/Brotcrunsher
Views: 1777 Brotcrunsher
Identity based Encryption from Codes with Rank Metric
 
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Paper by Philippe Gaborit and Adrien Hauteville and Duong Hieu Phan and Jean-Pierre Tillich, presented at Crypto 2017. See https://iacr.org/cryptodb/data/paper.php?pubkey=28219
Views: 157 TheIACR
Bi-Deniable Public-Key Encryption
 
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Talk at crypto 2011. Authors: Chris Peikert, Brent Waters, Adam O'Neill. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=23594
Views: 830 TheIACR
Javascript Random Number Generator
 
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How to create a random number generator application using javascript, html and css.. please subscribe for more programming and Graphics tutorials.
Views: 1535 Adedayo Daniel
Random numbers and bytes with PHP7
 
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Want more? Explore the library at https://www.codecourse.com/lessons Official site https://www.codecourse.com Twitter https://twitter.com/teamcodecourse
Views: 6111 Codecourse
Because "use urandom" isn't everything: a deep dive into CSPRNGs in Operating Systems & Programming
 
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Implementation, hazards and updates on use of RNGs in programming languages and the Linux Kernel (among others) Over the past year multiple people have been engaging language maintainers and designers to change their use of CSPRNGs (mainly relying on user-land RNGs like the one from OpenSSL, and sometimes suggesting "adding entropy" by various means from user-land daemons like haveged). In this short presentation we'll survey the struggle of cryptographers, developers and security engineers to change the path various high-profile languages have taken to provide randomness to their userbase. Affected languages include but are not limited to: Ruby, node.js and Erlang. We outline better approaches for language maintainers and implementers as well as coming changes within the Linux kernel crypto subsystem (i.e. /dev/random and /dev/urandom) w.r.t. security and performance. Recently these changes were merged into mainline Linux (4), problems with languages implementations however remain. We'll also discuss operating system provided randomness testing, attacks/mitigation in embedded and virtualized environments. #Software #Security Aaron Zauner (azet)
Views: 260 SHA2017
Public Seed Pseudorandom Permutations
 
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Paper by Pratik Soni and Stefano Tessaro, presented at Eurocrypt 2017. See https://www.iacr.org/cryptodb/data/paper.php?pubkey=28013
Views: 221 TheIACR
Cryptographically secure pseudorandom number generator
 
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If you find our videos helpful you can support us by buying something from amazon. https://www.amazon.com/?tag=wiki-audio-20 Cryptographically secure pseudorandom number generator A cryptographically secure pseudo-random number generator (CSPRNG) or cryptographic pseudo-random number generator (CPRNG) is a pseudo-random number generator (PRNG) with properties that make it suitable for use in cryptography.Many aspects of cryptography require random numbers, for example: key generation. -Video is targeted to blind users Attribution: Article text available under CC-BY-SA image source in video https://www.youtube.com/watch?v=NL-EL2KcU-Q
Views: 851 WikiAudio
Backdoors in Pseudorandom Number Generators  Possibility and Impossibility Results
 
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Jean Paul Degabriele and Kenneth G. Paterson and Jacob C. N. Schuldt and Joanne Woodage, Crypto 2016. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=27651
Views: 345 TheIACR
Pseudorandom Knapsacks and the Sample Complexity of LWE Search-to-Decision Reductions
 
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Talk at crypto 2011. Authors: Daniele Micciancio, Petros Mol. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=23590
Views: 250 TheIACR
Constrained Pseudorandom Functions for Unconstrained Inputs
 
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Apoorvaa Deshpande and Venkata Koppula and Brent Waters. Eurocrypt 2016. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=27615
Views: 205 TheIACR
Pseudorandom Number Generator
 
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Something I just thought up of when figuring out ways to get a random number on a 7-segment/dice. Can be turned on/off by powering the comparator in the clock. Works in 1.5.2 and above: http://www.mediafire.com/download/wat18add2pa2oxj/Pseudorandom_Number.zip
Views: 1205 iMinecraft1337
Image Encryption and Decryption using Chaotic Key Sequence
 
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Image Encryption and Decryption using Chaotic Key Sequence Generated by Sequence of Logistic Map and Sequence of States of Linear Feedback Shift Register This video project is done by: Potcharaphol Chat-anan (Aung) Tan Wei Jie, Chester Feng Wei Nicholas Koh Ming Xuan Jonathan Liem Zhuan Kim Chia Su Chi Faith
Views: 12438 Potcharaphol Chat-anan
Winter School: Pseudorandom functions and permutations - Iftach Haitner
 
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Pseudorandom functions and permutations (definitions and constructions) , a lecture by Iftach Haitner. The topic of the 4th Annual Bar-Ilan Winter School on Cryptography held in January 2014, was Symmetric Encryption in Theory and in Practice. The winter school studied symmetric encryption in theory and in practice, and included a study of the theoretical foundations of symmetric encryption on the one hand, and practical constructions and cryptanalysis on the other hand. As every year, the event organizers were Prof. Yehuda Lindell and Prof. Benny Pinkas, of BIU's Department of Computer Science. This year,the Winter School featured speakers from such institutions as the Royal Holloway at the University of London , and the University of Wisconsin - Madison. For all videos of this playlist: https://www.youtube.com/playlist?list=PLXF_IJaFk-9BmvxWhnxPId32CPJhVtU6D 4th Annual Bar-Ilan Winter School on Cryptography: http://crypto.biu.ac.il/winterschool2014/ Prof. Lindell's Lab http://www1.biu.ac.il/indexE.php?id=8043&pt=30&pid=7711&level=2&cPath=7702,7711,8043 Prof. Pinkas' Lab http://www1.biu.ac.il/indexE.php?id=8046&pt=30&cPath=7702,7711,8046 Dept. of Computer Science: http://cs.biu.ac.il/en/ Bar-Ilan University: http://www1.biu.ac.il/en
Views: 1326 barilanuniversity
Develop Random Number Generator in Android Studio
 
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Video shows you how to create simple Random Number Generator for Android. If you learn something press the Like button! If you want to see more tutorials like this press the Subscribe button! It's FREE!
Views: 5585 Tihomir RAdeff
APPSEC Cali 2018 -Predicting Random Numbers in Ethereum Smart Contracts
 
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Abstract: Smart contracts are not only about ICOs - various lotteries, roulettes and card games are implemented in Solidity and can be played by anyone on the Ethereum blockchain. Autonomy of the blockchain limits the sources of entropy for random number generators. There is no common library that could help developers to create secure RNGs either. That is why it is very easy to mess things up when implementing your own random number generator. The talk features the analysis of the gambling smart contracts on the blockchain. As you will see many of them failed to implement a secure RNG which allows to predict the outcome and steal significant sums of money. At the talk the examples of wrong RNG implementations found in the wild will be demonstrated. The attendees will also learn how to spot problems in RNGs as well as how to build a secure random number generator under blockchain limitations. About Arseny Reutov - Positive Technologies Ltd Arseny Reutov is a web application security researcher from Moscow, Russia. Arseny is the Head of Application Security Research at Positive Technologies Ltd where he specializes in penetration testing, the analysis of web applications, and, more recently, smart contracts audit. He is the author of research papers and blog posts on security of PRNGs in PHP published in such magazines as Hacker (Xakep) and HITB as well as in his blog raz0r.name. He was a speaker at ZeroNights, CONFidence, PHDays and OWASP conferences. Arseny loves making web security challenges (#wafbypass on Twitter) as well as solving them. His passion are modern web technologies and finding vulnerabilities in them. Managed by the official OWASP Media Project https://www.owasp.org/index.php/OWASP_Media_Project
Views: 330 OWASP
Pseudorandom Functions and Lattices.
 
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Talk at eurocrypt 2012. Authors: Abhishek Banerjee, Chris Peikert, Alon Rosen. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=24252
Views: 568 TheIACR
Quam Bene Non Quantum: identifying bias in a commercial quantum random number generator
 
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Technical talks from the Real World Crypto conference series.
Views: 341 Real World Crypto
CSPRNG Meaning
 
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Video shows what CSPRNG means. cryptographically secure pseudo-random number generator. CSPRNG Meaning. How to pronounce, definition audio dictionary. How to say CSPRNG. Powered by MaryTTS, Wiktionary
Views: 185 ADictionary
Professor Aggelos Kiayias - Chief Scientist - What is the future of cryptocurrencies?
 
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Aggelos Kiayias is chair in Cyber Security and Privacy at the University of Edinburgh. His research interests are in computer security, information security, applied cryptography and foundations of cryptography with a particular emphasis in blockchain technologies and distributed systems, e-voting and secure multiparty protocols as well as privacy and identity management. His research has been funded by the Horizon 2020 programme (EU), the European Research Council (EU), the Secretariat of Research and Technology (Greece), the National Science Foundation (USA), the Department of Homeland Security (USA), and the National Institute of Standards and Technology (USA). He has received an ERC Starting Grant, a Marie Curie fellowship, an NSF Career Award, and a Fulbright Fellowship. He holds a Ph.D. from the City University of New York and he is a graduate of the Mathematics department of the University of Athens. He has over 100 publications in journals and conference proceedings in the area. He currently serves as the program chair of the Financial Cryptography and Data Security conference.
Views: 1389 IOHK
Securing form submission with nonces
 
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For More Visit : http://vivatutorials.com
Views: 489 Honey Boney
Krzysztof Kotowicz - Biting into the Forbidden Fruit. Lessons from Trusting JavaScript Crypto.
 
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From AppSecEU 2014 in Cambridge https://2014.appsec.eu/ We all know JS crypto is flawed, right? Over the years, security community has pointed out its multiple fundamental problems. Several arguments were made and "JavaScript cryptography is bound to fail" became a mantra. Of course, despite all this JS crypto WAS used all over the place. Theory met practice - it was about time to dig into this! In recent months, we tested various high-profile, in the wild crypto libraries, applications and systems. We saw code from home-grown cryptography to full-blown TLS or OpenPGP implementations. Hilarious bugs were spotted, protections were bypassed and systems were pwned. But was it really that different from what we all had already seen in OpenSSL, BouncyCastle or GnuPGP? Can we actually fix all those bugs? Does it mean that Javascript cryptography can be, pardon us saying, secure like any other? Come and listen. During the talk vulns will be shown, authorities - questioned, myths - debunked, and browsers cursed upon. You'll see the full picture - from XSS, to man-in-the-middle, to PRNGs and timing side-channels, even snippets in C. No stone will be left unturned, nothing will be taken for granted. You'll be left with an updated, solid and heavily opinionated view of JavaScript cryptography. Speakers Krzysztof Kotowicz Web security researcher specialized in Javascript and HTML5 security. Author of multiple open-source pentesting tools, and recognized HTML5/UI redressing attack vectors. Speaker at international IT security conferences & meetings (Black Hat, BruCON, Hack In Paris, CONFidence, SecurityByte, HackPra, OWASP AppSec, Insomni'Hack). Recently joined Google as Information Security Engineer. - Managed by the official OWASP Media Project https://www.owasp.org/index.php/OWASP_Media_Project
Views: 304 OWASP
Fun with RNG - don't trust pseudo-random number generators
 
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They're simply not random.
Views: 261 Zaxik
Authenticated and Misuse-Resistant Encryption of Key-Dependent Data
 
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Talk at crypto 2011. Authors: Mihir Bellare, Sriram Keelveedhi. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=23599
Views: 437 TheIACR
Winter School on Cryptography: A History of Lattice-Based Encryption - Vadim Lyubashevsky
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 3727 barilanuniversity
3rd BIU Winter School on Cryptography: How pairings work and how to compute them efficiently
 
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The 3rd Bar-Ilan Winter School on Cryptography: Bilinear Pairings in Cryptography, which was held between February 4th - 7th, 2013. The event's program: http://crypto.biu.ac.il/winterschool2013/schedule2013.pdf For All 2013 Winter school Lectures: http://www.youtube.com/playlist?list=PLXF_IJaFk-9C4p3b2tK7H9a9axOm3EtjA&feature=mh_lolz Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 319 barilanuniversity
PHP Advanced Tutorial in Tamil 34  Random Number Generation
 
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Free PHP Advanced Tutorials in Tamil. Create a PHP Website Easily by Watching This Tutorilas. More Videos Visit www.Skyfree.in and www.SkyfreeTamil.Blogspot.in
Views: 840 Skyfree Seenu
USENIX Demo Dual-EC PRNG Attack
 
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Demo of Dual-EC PRNG attack by Stephen Checkoway at USENIX info security conference in San Diego on 21 Aug 2014.
Views: 137 Jonathan Abolins
3rd BIU Winter School on Cryptography: How Pairings Work - Florian Hess
 
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The 3rd Bar-Ilan Winter School on Cryptography: Bilinear Pairings in Cryptography, which was held between February 4th - 7th, 2013. The event's program: http://crypto.biu.ac.il/winterschool2013/schedule2013.pdf For All 2013 Winter school Lectures: http://www.youtube.com/playlist?list=PLXF_IJaFk-9C4p3b2tK7H9a9axOm3EtjA&feature=mh_lolz Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 2560 barilanuniversity
Vignere Cipher | "Salad Upgrade" (Hackcon2018 CTF)
 
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Join the Family: https://discord.gg/Kgtnfw4 Support me on Patreon: https://patreon.com/johnhammond010 Learn to code with a TeamTreehouse Discount: treehouse.7eer.net/1WOz6 E-mail: [email protected] PayPal: http://paypal.me/johnhammond010 GitHub: https://github.com/JohnHammond Site: http://www.johnhammond.org Twitter: https://twitter.com/_johnhammond
Views: 1439 John Hammond
EditThisCookie | CodefestCTF 2018: "Fortune Cookie"
 
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Join the Family: https://discord.gg/Kgtnfw4 Support me on Patreon: https://patreon.com/johnhammond010 Learn to code with a TeamTreehouse Discount: treehouse.7eer.net/1WOz6 E-mail: [email protected] PayPal: http://paypal.me/johnhammond010 GitHub: https://github.com/JohnHammond Site: http://www.johnhammond.org Twitter: https://twitter.com/_johnhammond
Views: 1391 John Hammond