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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: 162928 Khan Academy Labs
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
Coding Math: Episode 51 - Pseudo Random Number Generators Part I
 
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Back to School Special. This short series will discuss pseudo random number generators (PRNGs), look at how they work, some algorithms for PRNGs, and how they are used. Support Coding Math: http://patreon.com/codingmath Source Code: https://jsbin.com/nifutup/1/edit?js,output Earlier Source Code: http://github.com/bit101/codingmath
Views: 28654 Coding Math
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: 1124 Black Hat
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: 4471 Bishop Fox
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: 1605 gat3way
3rd BIU Winter School on Cryptography: Functional Encryption - Allison Bishop Lewko
 
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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: 1699 barilanuniversity
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: 606 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: 251 TheIACR
3rd BIU Winter School on Cryptography: Attribute-Based Encryption - Allison Bishop Lewko
 
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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: 4392 barilanuniversity
Winter School on Cryptography: Reduction for Sis - 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: 3856 barilanuniversity
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: 903 WikiAudio
How to Generate Pseudorandom Numbers | Infinite Series
 
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Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/donateinfi What is a the difference between a random and a pseudorandom number? And what can pseudo random numbers allow us to do that random numbers can't? Tweet at us! @pbsinfinite Facebook: facebook.com/pbsinfinite series Email us! pbsinfiniteseries [at] gmail [dot] com Previous Episode How many Cops to catch a Robber? | Infinite Series https://www.youtube.com/watch?v=fXvN-pF76-E Computers need to have access to random numbers. They’re used to encrypt information, deal cards in your game of virtual solitaire, simulate unknown variables -- like in weather prediction and airplane scheduling, and so much more. But How can a computer possibly produce a random number? Written and Hosted by Kelsey Houston-Edwards Produced by Rusty Ward Graphics by Ray Lux Assistant Editing and Sound Design by Mike Petrow Made by Kornhaber Brown (www.kornhaberbrown.com) Special Thanks to Alex Townsend Big thanks to Matthew O'Connor and Yana Chernobilsky who are supporting us on Patreon at the Identity level! And thanks to Nicholas Rose and Mauricio Pacheco who are supporting us at the Lemma level!
Views: 126590 PBS Infinite Series
AskDeveloper Podcast - 46 - Cryptography - Part 1 - Introduction and Hashing - التشفير الجزء الأول
 
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http://www.askdeveloper.com/2017/01/cryptography.html Information Security 1. Introduction ○ Security by obscurity § Steganography □ Hiding data inside another form of data, like using non-used bits in image to hide a message § Cool, but not practical. § Disadvantages ◊ Algorithm secrecy vs. key secrecy ○ Cryptography is everywhere and yet if done right, you can barely see it. ○ Goals: § Confidentiality □ Secrets stay secret. § Integrity □ Data is not tampered with. § Non-Repudiation □ No party can deny sending messages. § Authentication □ Each party can ensure that the sender is what they expect. ○ Cryptography § Hashing § Encryption § Signing § Protocols ○ Random Number Generators § Extremely important, almost all encryption/hashing strength is affected by how random the random number generator is. § Don't use simple random number, use a cryptographic random number generator with a sophisticated source of entropy. § Pseudorandom number generator § Dual_EC_DRBG random generator backdoor 2. Body ○ Hashing (one Way) § Properties □ Fixed length output no matter what size the input was □ Very easy to compute the hash of a given message, however very hard to compute from a hash the corresponding input. □ Mathematically infeasible to generate a message that has a given hash □ Any modification to a message produces a completely different hash that has no relationship to the original message's hash. □ It is mathematically infeasible to find two messages with the same hash. Hash Collision § Hashing Functions □ Provides data integrity, however lacks authentication □ Examples ® MD5 ◊ Considered Insecure ® Secure Hash Family SHA-X, Sha-1, Sha-2 [Sha256, Sha512], Sha-3 ◊ Sha-1 is considered insecure. ◊ Sha-1, Sha-2 designed by NSA ◊ Sha-3 is not designed by NSA, Competition winner. □ Attacks ® Brute force ◊ CPU's are getting faster and cheaper every day. ◊ GPU's are getting faster and cheaper every day. ◊ Special Hash calculating hardware is becoming more available especially with the BitCoin push. ® Rainbow table attacks ◊ Pre-Calculated tables where you can reverse lookup a hash to a value ◊ Try www.crackstation.net § Hash Message Authentication Codes (HMAC) □ Adds authentication to integrity □ Can be used with all previous algorithms, HMACMD5, HMACShA1, HMAC256 … etc. § Salted Hash □ Adds random salt to mitigate rainbow table □ Salts are unique per record, and not a secret. § Password Based Key Derivation Function (PBKDF2) □ RSA Public Key Cryptographic Standard PKCS #5 Version 2.0 □ Internet Engineering Task Force RFC 2898 Specification ® Adds a lot of iterations to slow it just enough to mitigate brute force (default 50,000 iterations) ® Adds random salt to mitigate rainbow table □ Disadvantage: It can be easily implemented with hardware which makes it vulnerable to bruteforce even with high number of iterations § Bcrypt □ Password Hashing function □ State of the art password hashing § Usages □ Integrity Check Password Storage Our facebook Page http://facebook.com/askdeveloper On Sound Cloud http://soundcloud.com/askdeveloper Please Like & Subscribe
Views: 2493 Mohamed Elsherif
Fun with RNG - don't trust pseudo-random number generators
 
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They're simply not random.
Views: 262 Zaxik
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
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: 2636 barilanuniversity
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: 13174 Potcharaphol Chat-anan
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: 2812 Black Hat
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: 238 TheIACR
Java Programming Tutorial - 26 - Random Number Generator
 
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Facebook - https://www.facebook.com/TheNewBoston-464114846956315/ GitHub - https://github.com/buckyroberts Google+ - https://plus.google.com/+BuckyRoberts LinkedIn - https://www.linkedin.com/in/buckyroberts reddit - https://www.reddit.com/r/thenewboston/ Support - https://www.patreon.com/thenewboston thenewboston - https://thenewboston.com/ Twitter - https://twitter.com/bucky_roberts
Views: 810687 thenewboston
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: 981 Adrian Crenshaw
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: 852 Skyfree Seenu
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: 352 TheIACR
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: 1621195 Computerphile
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: 714 barilanuniversity
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: 2109 Udacity
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: 1063 media.ccc.de
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: 418640 SciShow
Black Hat USA 2013 - Black-Box Assessment of Pseudorandom Algorithms
 
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By: Derek Soeder, Christopher Abad & Gabriel Acevedo Last year at Black Hat, Argyros and Kiayias devastated all things pseudorandom in open-source PHP applications. This year, we're bringing PRNG attacks to the masses. We'll point out flaws in many of the most common non-cryptographic pseudorandom number generators (PRNGs) and examine how to identify a PRNG based on a black-box analysis of application output. In many cases, most or all of the PRNG's internal state can be recovered, enabling determination of past output and prediction of future output. We'll present algorithms that run many orders of magnitude faster than a brute-force search, including reversing and seeking the PRNG stream in constant time. Finally, of course, we'll demonstrate everything and give away our tool so that you can perform the attacks during your own assessments.
Views: 728 Black Hat
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: 63 Ombarus
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: 213 TheIACR
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: 1348 barilanuniversity
Winter School on Cryptography: Fully Homomorphic Encryption - Craig Gentry
 
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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: 2880 barilanuniversity
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: 143 Jonathan Abolins
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: 295 SHA2017
PRNG Youth ChalleNGe Program 2010
 
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An inspiring video showcasing the Puerto Rico National Guard Youth ChalleNGe Program that has changed the lives of more than 2,500 young people and brightened their futures. Video and production by SSG Marizol Ruiz, PRNG PAO, 113th MPAD. (In Spanish)
How a PRNG Might Work
 
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How a pseudo random number generator might work online
Views: 2073 realdealpoker1
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: 1568 Adedayo Daniel
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: 842 TheIACR
Create A Random Nonce String Using JavaScript
 
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Create a random string of characters that can be used for strong passwords, oauth nonces, or anything else using JavaScript. View a written version of this tutorial on my web blog: https://blog.nraboy.com/2015/03/create-a-random-nonce-string-using-javascript/ Follow my blog or subscribe to my YouTube channel for other great programming tutorials.
Views: 5164 Nic Raboy
Mersenne twister
 
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The Mersenne Twister is a pseudorandom number generator (PRNG). It is, by far, the most widely used PRNG. Its name derives from the fact that its period length is chosen to be a Mersenne prime. The Mersenne Twister was developed in 1997 by Makoto Matsumoto (松本 眞) and Takuji Nishimura (西村 拓士). It was designed specifically to rectify most of the flaws found in older PRNGs. It was the first PRNG to provide fast generation of high-quality pseudorandom integers. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 5121 Audiopedia
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: 3800 barilanuniversity
Adding Randomness to Password Based Authentication Schemes using Random Challenge
 
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User Authentication Adding Randomness to Password Based Authentication Schemes using Random Challenge Keywords: User Authentication Adding Randomness to Passwords Random Challenge Network Security Notes Computer Network Security Notes
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: 191 TheIACR
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: 478 OWASP
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: 438 TheIACR
Incorporating HMAC - Web Development
 
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This video is part of an online course, Web Development. Check out the course here: https://www.udacity.com/course/cs253.
Views: 691 Udacity
iGaming Software Development | Game Development Services | Custom Video Game Designers
 
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iGaming Software Development - https://www.chetu.com/gambling.php - Game Development Services | Custom Video Game Designers - Online Gaming Software Providers, Online Casino Software For Providers, iGaming Platform, iGaming Software Design and Development, Gambling Software Development Gambling Software Developers | Casino Game Development - Gaming developers provide gambling software solutions for online and land-based casino games, sports betting apps, and sweepstakes software - Custom Gambling Software Solutions - We develop gaming software solutions and perform game design for the gambling industry, catering to standard and mobile gaming systems, as well as land based and online casino systems, and sports oriented platforms. Gambling development solutions. Casino Game Development Casino Games Software Solutions https://www.chetu.com/gambling/land-based-casino.php Gambling Software Developers - Casino Game Development https://www.chetu.com/gambling.php Chetu's Casino Games Software Solutions Include Popular Game Types Such As Slots, Bingo, And Poker, As Well As Write Popular Poker Game Styles, Including Texas Hold 'em, And 7-card Stud. Casino Games Software Integration, Random Number Generators, Casino Game Design, Land Based Casino Software System, Online Casino Software Solutions Chetu creates class II and class III game types with intuitive UI and visceral UX. Management portals are programmed for admins to disable games, change rules, and create back office modules for different types of users. ONLINE GAMING ENGINES - RNG, calculation engines, gaming logic and data encryption development. #iGamingSoftwareDevelopment #GamblingSoftwareDevelopers #CasinoGameDevelopment #GameDevelopmentServices #CustomVideoGameDesigners #sportsbettingsoftware #fantasysports #igamingdevelopment ONLINE CASINO SECURITY- Secure player portals to store players' personal information, and payment info. BACK OFFICE SOLUTIONS - Custom reporting functionality, including segmentation reports. SPORTS BETTING SOFTWARE Chetu's custom white label sports betting software is designed and developed with multi-channel functionality across various device platforms. ONLINE BETTING Online Betting software is created with interactive and personalized user portals with payment gateway integration with custom wallet development. SPORTSBOOK INTEGRATION Third party live sports and racing video feeds are integrated with real-time bet tickers, and third party payment entities securely accept various payment transaction types. AMTOTE BETTING SYSTEMS We program internet sweepstakes software for various platforms (desktop, cloud, mobile, and more), with integration of insta-win games with social platforms. Fantasy Draft Software Programming, Fantasy Sports Software Design, Custom Fantasy Scoring System Solutions, Fantasy League Software Solutions, Fantasy Sports Augmented Reality Software, Fantasy Analytics Software Services, Social Gaming Software Solutions - https://www.chetu.com/gaming/fantasy-sports.php Custom Sports Betting Software Solutions & Services Sports betting software solutions include online betting software solutions, and Sportsbook software and AmTote system integration. - iGaming Software Development - https://www.chetu.com/gambling/sports-betting.php Our certified experts with their years of software expertise in the gambling industry will get you over the finish line with custom sports betting software solutions, providing industry specific programming, up-to-date functionalities, and streamlined, end-to-end software development. Sportsbook Software Integration, Online Betting Software, AmTote System Integration, AmTote Betting Systems Solutions, Pari-Mutuel Betting Software Services - Casino Games Software Solutions What you need are experienced developers with industry-specific expertise who will develop, program, design and integrate tailor-made software solutions that will boost profitability, increase payout accuracy, and fortify data security. Casino Games Software Solutions, Casino Gameplay Solutions, Casino Games Software Integration, Casino Software Security, Slot Machine Software Development, Casino Game Design, Land Based Casino Payout Software, RNG Software Integration, Casino Software System Services, iGaming Software Development - Game Development Services - Custom Video Game Designers https://www.chetu.com/gaming.php Facebook - https://www.facebook.com/ChetuInc Linkedin - https://www.linkedin.com/company/chetu-inc-/ Pinterest - https://www.pinterest.com/chetuinc/game-development-services/ Wordpress - https://gamedevelopmentservices260147950.wordpress.com/ Reddit - https://www.reddit.com/user/Game-Development-Ch Tumblr - https://www.tumblr.com/blog/game-development-services Vimeo - https://vimeo.com/chetuinccorporateoffice Chetu Blog - https://www.chetu.com/blogs Medium - https://medium.com/@officialchetumarketing Blogger - https://gamedevelopmentcompanychetu.blogspot.com
Views: 40 Chetu Inc