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Lecture 21 (update): SHA-3 Hash Function by Christof Paar
 
01:38:17
For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
What is a SHA-256 Cryptographic Hash Algorithm?
 
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In this video, I answer a question from one of the viewers of my YouTube channel YouTube.com/GeorgeLevy : What is a SHA-256 Cryptographic Hash Algorithm? Learn more about blockchain, and Bitcoin on my online video course Blockchain and Bitcoin Fundamentals at: http://BlockchainandBitcoinFundamentals.com Sign up to receive George Levy's FREE email newsletter and a video email course on blockchain, Bitcoin and cryptocurrency ($47 Value yours free) at: https://GeorgeLevy.com/Free Subscribe to this channel to stay up to date on new educational videos published each Thursday! Follow George Levy at the following links: https://GeorgeLevy.com (George Levy Website) https://Twitter.com/GeorgeLevy https://Facebook.com/GeorgeLevyBlockchain (Official Facebook Page) Special offer for George Levy channel viewers, open a new Bitcoin wallet for Free and get $10 bonus in Bitcoin at: https://blockchaininformer.com/btcwallet
Views: 5232 George Levy
SHA: Secure Hashing Algorithm - Computerphile
 
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Secure Hashing Algorithm (SHA1) explained. Dr Mike Pound explains how files are used to generate seemingly random hash strings. EXTRA BITS: https://youtu.be/f8ZP_1K2Y-U Tom Scott on Hash Algorithms: https://youtu.be/b4b8ktEV4Bg 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: 413328 Computerphile
SHA-1 (Secure hash Algorithm) working in English  | CSS series
 
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Take the full crash course of Cryptography and Security System for free at Last moment tuitions Full course : https://lastmomenttuitions.com/course/cryptography-and-system-security/ Sample Notes :https://goo.gl/QpZPF5 For full hand made notes of Artificial Intelligence its only 100 rs payment options is PAYTM :9762903078 once we get payment notification we will mail you the notes on your email id contact us at :[email protected] whatsapp :9762903078 apko koi bhi doubt ho toh app humko direct email ya phone kar sakte ho Cryptography and security systems Series introduction to CSS: https://goo.gl/tjrh1L security goals and mechanism:https://goo.gl/uq35hP symmetric cipher:https://goo.gl/KFxF9j Substitution cipher and its types:https://goo.gl/MKmPzk Transposition cipher:https://goo.gl/uHqD7i diffie -hellman: https://goo.gl/YrskC5 RSA Algorithm:https://goo.gl/KwzCBF Kerberos:https://goo.gl/MQPgzw IDEA algorithm : https://goo.gl/PTCqFH Dos and DDos attack: https://goo.gl/8T345G SQL injection:https://goo.gl/bcVHnw SHA-1 vs MD5 :https://goo.gl/QJBhJD chalo toh public bus pass hojao aur share karo videos ko whatsapp group apne last moment pe unn dosto ko jo apni tarah last moment pe padhte hai Aur videos CSS ke aane waale hai so Channel ko subscribe jaroor karna follow us on: https://www.instagram.com/last_moment_tuitions https://www.facebook.com/lastmomenttuition https://www.facebook.com/sumerr3
Views: 49526 Last moment tuitions
NETWORK SECURITY - SHA 512 (AUTHENTICATION ALGORITHM)
 
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SHA 512 (SECURE HASH ALGORITHM) 1) PAD WITH THE BITS 100..... UNTIL LENGTH OF PLAIN TEXT REACHES 128 LESS THAN MULTIPLE OF 1024 BITS 2) APPEND 128 BIT REPRESENTATION OF ORIGINAL PLAIN TEXT MESSAGE SO THAT LENGTH EQUALS TO MULTIPLE OF 1024 3) INITIALIZE 8 BUFFERS OF SIZE 64 BITS EACH TO STORE INTERMEDIATE RESULTS AND FINAL HASH CODE. 4) PROCESS EACH 1024 BIT BLOCK IN 80 ROUNDS. 5) OUTPUT IN BUFFERS IS THE 512 BIT HASH CODE
DEF CON 25 Crypto and Privacy Village - David Wong - SHA 3 vs The World
 
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Since Keccak has been selected as the winner of the SHA-3 competition in 2012, a myriad of different hash functions have been trending. From BLAKE2 to KangarooTwelve we'll cover what hash functions are out there, what is being used, and what you should use. Extending hash functions, we’ll also discover STROBE, a symmetric protocol framework derived from SHA-3.
Views: 2313 DEFCONConference
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: 65463 MIT OpenCourseWare
NETWORK SECURITY - TYPES OF AUTHENTICATION (Message Encryption, MAC, Hash Functions)
 
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Three types of Authentications 1. Message Encryption 2. Message Authentication Code 3. Hash Functions.
Security Snippets: SHA-3
 
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The tutorial is here: http://www.asecuritysite.com/Encryption/sha3
Views: 6445 Bill Buchanan OBE
The cryptographic hash function BLAKE
 
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The cryptographic hash function BLAKE Animation overview/visualization of how the hash function works Originally here: www.youtube.com/watch?v=PgpJNRnx6eY not sure why this was removed as its a great animation showing how the hash function works Full credits goes to the author(s) which are listed in the animation "BLAKE is one of the five hash functions in the final of the NIST SHA-3 Competition. BLAKE is one of the simplest designs to implement, and relies on previously analyzed components: the HAIFA structure and the ChaCha core function." https://131002.net/blake/ *Copyrights - Thought to be originally released as Public domain and used here in Fair Use
Views: 6304 Blue Dragon
SHA-3
 
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SHA-3 SHA-3 (Secure Hash Algorithm 3), a subset of the cryptographic primitive family Keccak (/ˈkætʃæk/, or /kɛtʃɑːk/), is a cryptographic hash function designed by Guido Bertoni, Joan Daemen, Michaël Peeters, and Gilles Van Assche, building upon RadioGatún.SHA-3 is a member of the Secure Hash Algorithm family. =======Image-Copyright-Info======== License: Creative Commons Attribution 3.0 (CC BY 3.0) LicenseLink: http://creativecommons.org/licenses/by/3.0 Author-Info: © 2007-2009 Guido Bertoni, Joan Daemen, Michaël Peeters and Gilles Van Assche Image Source: https://en.wikipedia.org/wiki/File:SpongeConstruction.svg =======Image-Copyright-Info======== -Video is targeted to blind users Attribution: Article text available under CC-BY-SA image source in video https://www.youtube.com/watch?v=EM3QiJq93Vk
Views: 5468 WikiAudio
Bitcoin - Cryptographic hash function
 
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What cryptographic hash functions are and what properties are desired of them. More free lessons at: http://www.khanacademy.org/video?v=0WiTaBI82Mc Video by Zulfikar Ramzan. Zulfikar Ramzan is a world-leading expert in computer security and cryptography and is currently the Chief Scientist at Sourcefire. He received his Ph.D. in computer science from MIT.
Views: 218297 Khan Academy
cryptography - HMAC
 
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Cryptography To get certificate subscribe: https://www.coursera.org/learn/cryptography ======================== Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWb07OLBdFI2QIHvPo3aTTeu ============================ Youtube channel: https://www.youtube.com/user/intrigano ============================ https://scsa.ge/en/online-courses/ https://www.facebook.com/cyberassociation/
Views: 11339 intrigano
How Does SHA-1 Work - Intro to Cryptographic Hash Functions and SHA-1
 
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Learn more advanced front-end and full-stack development at: https://www.fullstackacademy.com SHA-1 stands for Secure Hash Algorithm 1, a cryptographic hash function developed by the NSA that can be used to verify that a file has been unaltered. In this video, we go over the basic features and common implementations of cryptographic hash functions before diving into the inner workings of a Javascript implementation of the SHA-1 function. Although out of use now, walking through the hash function code provides valuable insight into how these algorithms work. Watch this video to learn: - What are Cryptographic Hash Functions - Practical uses for Cryptographic Hash Functions - How does SHA-1 work
Views: 8067 Fullstack Academy
Secure Hash Algorithm
 
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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: 25612 Udacity
Hashing Algorithms and Security - Computerphile
 
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Audible free book: http://www.audible.com/computerphile Hashing Algorithms are used to ensure file authenticity, but how secure are they and why do they keep changing? Tom Scott hashes it out. More from Tom Scott: http://www.youtube.com/user/enyay and https://twitter.com/tomscott http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Pigeon Sound Effects courtesy of http://www.freesfx.co.uk/ Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels
Views: 716212 Computerphile
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: 834547 3Blue1Brown
SHA-1 Algorithm ( Cryptography & Network Security)
 
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Prof.V.Bibin Christopher Department of CSE Ponjesly College of Engineering
Views: 20717 ponjesly cse
IOTA tutorial 8: Cryptographic sponge construction
 
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If you like this video and want to support me, go this page for my donation crypto addresses: https://www.youtube.com/c/mobilefish/about This is part 8 of the IOTA tutorial. In this video series different topics will be explained which will help you to understand IOTA. It is recommended to watch each video sequentially as I may refer to certain IOTA topics explained earlier. In 2007, the sponge construction was introduced by Guido Bertoni and others. A sponge construction or sponge function takes input bit data of any length (message) and produce an output bit data of any desired length (hash digest). Simply said, the data is "absorbed" into the sponge, then the result is "squeezed" out.  The sponge function has two phases, the absorbing phase in which the message is compressed iteratively followed by the squeezing phase in which the hash digest is extracted in a iterative manner. A sponge function has three components: A state memory (S) which is divided into two sections: one of size r (the bitrate) and the other of size c (the capacity). For simplicity sake in this video the capacity will be complete ignored. A compression function (f) of fixed length that transforms the state memory. IOTA uses the Keccak-384 hash algorithm as its compression function. Please note this Keccak-384 hash algorithm does not comply with the standardised SHA3-384 as defined by the National Institute of Standards and Technology (NIST). A padding function (pad) which appends enough bits to the input data (M) so that the length of the padded input is a whole multiple of the bitrate r. The padded input can thus be broken into r-bit blocks. The sponge function operates as follows, starting with the absorbing phase: The state memory S is initialised to zero. The padded input is broken into r-bit blocks and called M0, M1, M2, etc. The r-bit block is XORed with the first message block M0 and the result is passed to the compression function f. The function stores its result in the state memory S. The updated r-bit block is XORed with the second message block M1 and the result is passed to function f. Again function f stores its result in the state memory S. The process is repeated until all message blocks M0, M1, M2 etc. are used up. The sponge function squeezing phase, to create the hash digest is as follows: The r-bit block of the state memory is the first r bits of output (Z0). If more output bits are desired the r-bit block is passed to function f. Function f stores its result in the state memory S. The r-bit block of the state memory is the next r bits of output (Z1). The process is repeated until the desired number of output bits are produced. The concatenated values Z0, Z1, Z2, etc, forms the hash digest. If the output length is not a multiple of r bits, it will be truncated. More information about the sponge construction: https://keccak.team/sponge_duplex.html Check out all my other IOTA tutorial videos: https://goo.gl/aNHf1y Subscribe to my YouTube channel: https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: https://www.mobilefish.com/developer/iota/iota_quickguide_tutorial.html #mobilefish #howto #iota
Views: 2983 Mobilefish.com
Password Hashing, Salts, Peppers | Explained!
 
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---------------------------------------------------------------------------------------------- Check out my site: http://www.seytonic.com Follow me on twitter: https://twitter.com/seytonic
Views: 51110 Seytonic
what is SHA-256 Algorithm | mining Algorithm
 
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------------------------------------- Welcome to 100% Working------------------------------------- Facebook: https://www.facebook.com/100pWorking/ Twitter: https://twitter.com/100pworking YouTube: https://www.youtube.com/100working Blog: https://100pworking.blogspot.com Google+: https://plus.google.com/u/0/b/108114053278892774365/108114053278892774365 SHA-256 The SHA-256 algorithm is used to mine bitcoin, It is worth noting SHA-256 is part of the SHA-2 cryptographic hash(SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA).. ... A key aspect of cryptographic hash functions is their collision resistance: nobody should be able to find two different input values that result in the same hash output.) function initially designed by the NSA. In the early days of bitcoin mining, it was feasible to use a powerful CPU. Once the mining software was modified to support graphic cards, GPUs became the new preferred form of mining hardware. Eventually, FPGAs and ASICs took over. By making use of these application-specific integrated circuits, mining bitcoin has become a very expensive process. These machines require a lot of electricity, even though they have become more energy-efficient as of late. #SHA-256 #Algorithm #SHA #256
What is a Bitcoin hash and SHA-256
 
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This video explains the concept of hashing and SHA-256 for newbies. For more information visit http://99bitcoins.com/what-is-bitcoin-hash/
Views: 56070 Ofir Beigel
Blockchain Basics Explained - Hashes with Mining and Merkle trees
 
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A brief and simple introduction to the hash function and how blockchain solutions use it for proof of work (mining) and data integrity (Merkle Trees).
Views: 204519 Chainthat
How Does SHA256 Work?
 
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Since SHA1 has been broken, SHA256 is seen as one of the contenders to replace it. In this video I review why it might be needed and how it functions on a low and high level perspective by stepping through the algorithm with an example by converting abc to its digest. I did a similar explanation for SHA1 in another video so check that out. Ill also be doing some supplementary videos on the binary math...ill be having some fun with them :D Music Title Olympus by Ross Bugden https://www.youtube.com/watch?v=BnmglWHoVrk https://creativecommons.org/licenses/by/4.0/ Clips used One Piece film z - Eiichiro Oda, Tatsuya Nagamine Avatar the last Air Bender - Joaquim Dos Santos,Michael Dante DiMartino,Bryan Konietzko Ghost Pain - Masahiko Murata, Kazuchika Kise Terminator Genysis - Alan Taylor,Bill Carraro,Megan Ellison Phantasy Star Online - Keiichirô Kawaguchi,Kyohei Ito One Piece - Kōnosuke Uda, Eiichiro Oda,Alfred Kahn,Toei Animation,Yoshihiro Suzuki Animatrix- Peter Chung, Andrew R. Jones,Mahiro Maeda,Joel Silver The Matrix Reloaded - Lana Wachowski (as The Wachowski Brothers), Lilly Wachowski (as The Wachowski Brothers),Bruce Berman Bleach - Tite Kubo, TV Tokyo, Dentsu and Studio Pierrot Boruto: Naruto Next Generations - Noriyuki Abe and Hiroyuki Yamashita Samurai Champloo - Shinichirō Watanabe,Takatoshi Hamano,Takashi Kochiyama,Tetsuro Satomi
Views: 27845 EpicFactFind
Why is SHA-2 safer than SHA-1 in SSL certificates (screencast) - Cryptography/SSL 101 #6
 
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Here is a detailed walkthrough of why the strength of the hash function used to sign the certificates is very important and why SHA-1 is being phased out in favour of SHA-2. We go through the end to end process of signing a certificate, then in reverse show what happens as the signatures are validated by the browser. Then we discuss some ways in which a compromise of the hash functions can lead to dangerous scenarios on the internet. Finally a brief overview of what people who are responsible for websites need to know and the urgency of making the changes. If you're looking for a great text description of how the SSL chain works I would recommend this one. http://commandlinefanatic.com/cgi-bin/showarticle.cgi?article=art012
Views: 4682 Matt Thomas
Five* non-cryptographic hash functions enter. One hash function leaves.
 
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Adam Harvey https://linux.conf.au/schedule/30208/view_talk When you say “hash function” in a room full of developers, people tend to think of the classics: MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, SHA-OHGODPLEASESTOP, and the like — cryptographic hash functions intended for cryptographic uses. There’s another world out there, though: non-cryptographic hashes. Sometimes you just need to figure out if you’ve already seen a string or structure. Sometimes you need a basic checksum. Sometimes you need a hash that’s just fast and can fit into a 32 bit integer. I’ll run through the state of the art in the world of non-cryptographic hashing — what your best options are, how they compare in terms of CPU and memory usage, and how they work. Who takes it? Whose mixing function reigns supreme? Let’s find out. * I’m saying “five”, but realistically I’m going to cover as many modern options as I can fit into the time available. Let’s say “five plus or minus two” in reality.
Message Digest and Digital Signature | Cryptographic Hash Function
 
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This video lecture is produced by S. Saurabh. He is B.Tech from IIT and MS from USA. Message Digest and Digital Signature To study interview questions on Linked List watch http://www.youtube.com/playlist?list=PL3D11462114F778D7&feature=view_all To prepare for programming Interview Questions on Binary Trees http://www.youtube.com/playlist?list=PLC3855D81E15BC990&feature=view_all To study programming Interview questions on Stack, Queues, Arrays visit http://www.youtube.com/playlist?list=PL65BCEDD6788C3F27&feature=view_all To watch all Programming Interview Questions visit http://www.youtube.com/playlist?list=PLD629C50E1A85BF84&feature=view_all To learn about Pointers in C visit http://www.youtube.com/playlist?list=PLC68607ACFA43C084&feature=view_all To learn C programming from IITian S.Saurabh visit http://www.youtube.com/playlist?list=PL3C47C530C457BACD&feature=view_all
Views: 11731 saurabhschool
Hashing & Cryptographic Hash Functions - Explained
 
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Medium: https://medium.com/@benjaminhall/ Telegram: /cryptocatchup Twitter: /crypto_catchup Website: https://cryptocatchup.com Linkedin - https://www.linkedin.com/in/benjamin-hall-760b9891/ (Professional Connections Only) Beginners Exchange Coin Spot - 50+ Coins https://www.coinspot.com.au?affiliate=8M3RL Binance (Biggest in world!) https://www.binance.com/?ref=10801098 Please fill out the contact form there if you or your business would like to get in touch. I would love to see some more engagement around speaking opportunities. ETHLEND Do you have a token portfolio and need to unlock some of that liquidity you have lying around in your tokens? Place a loan request by installing Metamask and browsing to the decentralized application. https://app.ethlend.io/ Disclaimer: The information from Benny and any other Crypto Catch Up affiliate/member is for informational purposes only. It should not be considered legal or financial advice. You should consult with a financial professional to determine what may be best for your individual needs. I don't make any guarantees or other promises as to any results that may be obtained from using my content/advice. No one should make any investment decision without first consulting his or her own financial adviser and conducting his or her own research and due diligence. All videos posted are the opinion of Crypto Catch Up only and not that of any other company that Crypto Catch Up may be in party with.
Views: 172 Crypto Catch Up
Passwords & hash functions (Simply Explained)
 
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How can companies store passwords safely and keep them away from hackers? Well let's find out! With all the data breaches lately, it's likely that the password of one of your accounts has been compromised. Hackers now might know the password you've used, but they also might not.. To understand why, we'll take a look at what methods a company can use to protect user passwords. We'll take a look at encryption, hash functions and a multilayer approach! 📚 Sources Can be found on my website: https://savjee.be/videos/simply-explained/hash-functions/ 🌍 Social Twitter: https://twitter.com/savjee Facebook: https://www.facebook.com/savjee ✏️ Check out my blog https://www.savjee.be
SHA-2 Cryptographic Hash Function
 
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For clearer illustrations, a .ppsx file (ppt slide show with narration) can be accessed at https://www.dropbox.com/s/j7k4c5nm3zgezp2/ppsxABU_SHA2_Presentation.ppsx
Views: 15390 Patricia Abu
SHA Algorithm Explained
 
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In this video, following topics covered: 1. Hash Function 2. SHA family 3. SHA-1 4. Sha-2 Website: http://www.allabouttesting.org Please share and subscribe this video Disclaimer: This video is for educational purpose only. Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.
Views: 1778 All About Testing
Cryptographic Hash Functions
 
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Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 12346 nptelhrd
SHA-1 Hash Function
 
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Views: 51703 Kiran Kuppa
SHA-2 Cryptographic Hash Function
 
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For clearer illustrations, a .ppsx file (ppt slide show) can be accessed at https://www.dropbox.com/s/j7k4c5nm3zgezp2/ppsxABU_SHA2_Presentation.ppsx
Views: 4728 Patricia Abu
Portfolio of optimized cryptographic functions based on Keccak
 
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by Gilles Van Assche At: FOSDEM 2017 Since its adoption as the SHA-3 standard, Keccak has grown out of the merehashing functionality. We present a consistent set of cryptographic functions,for fast hashing, pseudo-random bit generation, authentication orauthenticated encryption, that enjoy very competitive safety margin vs speedratios. We highlight the bases for the security of these functions and diveinto their software implementations. Beyond the FIPS 202 standard functions derived from Keccak (i.e., SHA-3 hashfunctions and SHAKE{128,256} extendable output functions), we present severalinteresting proposals, consistently based on the same permutation or its roundfunction. Among others: * For authenticated encryption, Ketje and Keyak are schemes that were selected for the third round of the [CAESAR competition](http://competitions.cr.yp.to/caesar-submissions.html). In particular, Keyak proposes interesting features when protecting a stream of data flowing on a network. It exploits the parallelism in modern processors to achieve a high throughput. * [KangarooTwelve](http://eprint.iacr.org/2016/770.pdf) is a recently published arbitrary-output-length hash function. We designed it so that the implementation can automatically adapt to the available degree of parallelism. On Intel's Haswell and Skylake architectures, it achieves a speed below 1.5 cycles/byte for long inputs. Two key aspects will be covered. First, the essential goal of these functions is to remain secure despiteadvances in cryptanalysis. We will explain explain how we base the security ontwo strong pillars: the track record of third-party cryptanalysis and thegeneric security of the underlying construction. Second, we will explore the [Keccak CodePackage](https://github.com/gvanas/KeccakCodePackage) and its two-levelstructure. The high-level cryptographic services are implemented in plain C,without any specific optimizations. The low-level services implement thepermutations and the state input/output functions, for which we provideoptimized code for different platforms. Another interesting topic to discussis how the parallelism is exploited on modern processors with SIMD units. Room: Janson Scheduled start: 2017-02-05 09:00:00
Views: 47 FOSDEM
"SHA-3 vs the World" - David Wong
 
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Since Keccak has been selected as the winner of the SHA-3 competition in 2012, a myriad of different hash functions have been trending. From BLAKE2 to KangarooTwelve we'll cover what hash functions are out there, what is being used, and what you should use. Extending hash functions, we’ll also discover STROBE, a symmetric protocol framework derived from SHA-3 Slides can be found here: https://www.owasp.org/images/f/f5/OWASPLondon20171123_SHA3_vs_the_world.pdf Speaker Bio: David Wong (@lyon01_david) David Wong is a Security Consultant at the Cryptography Services practice of NCC Group. He has been part of several publicly funded open source audits such as OpenSSL and Let's Encrypt. He has conducted research in many domains in cryptography, publishing whitepapers and sharing results at various conferences including DEF CON and ToorCon as well as giving a recurrent cryptography course at Black Hat. He has contributed to standards like TLS 1.3 and the Noise Protocol Framework. He has found vulnerabilities in many systems including CVE-2016-3959 in the Go programming language and a bug in SHA-3's derived KangarooTwelve reference implementation. Prior to NCC Group, David graduated from the University of Bordeaux with a Masters in Cryptography, and prior to this from the University of Lyon and McMaster University with a Bachelor in Mathematics. This talk was presented at OWASP London Chapter Meeting (meetup) on 23-Nov-2017 hosted by The Telegraph. Follow OWASP London on Twitter: @owasplondon
Views: 355 OWASP London
Applied Cryptography: Hash Functions - Part 1
 
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This video gives a general idea on what hash functions are and their uses. It also describes a use of hash functions for a digital signature protocol.
Views: 21337 Leandro Junes
Java Tutorial - Hash functions (MD2, MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512)
 
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This video cover hash functions in Java (MD2, MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512). Please upvote & subscribe and visit https://www.facebook.com/tuts4java on facebook. Like & share :)
Views: 9838 Zoran Davidović
CSE571-11-11: Cryptographic Hash Functions
 
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Audio/Video Recording of Professor Raj Jain's class lecture on Cryptographic Hash Functions. It covers Hash Function, Cryptographic Hash Functions, Applications of Crypto Hash Fn, Birthday Problem, Probability of Hash Collisions, Hash Function Cryptanalysis, Block Ciphers as Hash Functions, Secure Hash Algorithm (SHA), SHA-1 Algorithm, SHA-2, SHA-512 SHA-512 Round Function, 80-Word Input Sequence, SHA-3, SHA-3 Requirements
Views: 7644 Raj Jain
Lecture 20: Hash Functions by Christof Paar
 
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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
NETWORK SECURITY - MD5 ALGORITHM
 
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The MD5 algorithm is a widely used hash function producing a 128-bit hash value. Step 1. Append Padding Bits. The message is "padded" (extended) so that its length (in bits) is congruent to 448, modulo 512. ... Step 2. Append Length. ... Step 3. Initialize MD Buffer Step 4. Process Message in 16-Word Blocks. ... Step 5. Output.
SHA 1, SHA 224, SHA 256, SHA 384, SHA 512 Hashing - Cryptography with Python
 
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This tutorial explains how to create a hash using all the different versions of the SHA cryptographic algorithm.
Views: 78 ma academy
Hashing Techniques Hash Function, Types of Hashing Techniques in Hindi and English
 
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Hashing Techniques Hash Function, Types of Hashing Techniques in Hindi and English * Direct Hashing * Modulo-Division Hashing * Mid-Square Hashing * Folding Hashing - Fold-Shift Hashing and Fold Boundary Hashing * PseudoRandom Hashing * Subtraction Hashing For Students of B.Tech, B.E, MCA, BCA, B.Sc., M.Sc., Courses - As Per IP University Syllabus and Other Engineering Courses
Views: 170918 Easy Engineering Classes
SHA-3
 
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Video do trabalho de Segurança em Computadores (UFSC) sobre o SHA-3.
Views: 256 q2santos
[FOSDEM 2013] Keccak, More Than Just SHA3SUM
 
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Keccak, More Than Just SHA3SUM Gilles Van Assche Joan Daemen Michaël Peeters Recently, the American National Institute of Standards and Technology (NIST) announced the selection of Keccak as the winner of the SHA-3 Cryptographic Hash Algorithm Competition. This concluded an open competition that was remarkable both for its magnitude and the involvement of the cryptographic community. Public review is of paramount importance to increase the confidence in the new standard and to favor its quick adoption. The SHA-3 competition explicitly took this into account by giving open access to the candidate algorithms and everyone in the cryptographic community could try to break them, compare their performance, or simply give comments. In this talk the authors of Keccak will introduce and highlight the strengths of their cryptographic primitive and explain how it can benefit to the FOSS community. Although Keccak, as the SHA-3 standard, will coexist with the current standard SHA-2 hash function family, it is much more than just another "SHAxSUM" algorithm. Keccak relies at its core on a new construction, called the sponge construction, which allows for simpler and more flexible modes of use. The talk will illustrate this by giving various examples on how current software designs can benefit from this greater flexibility, e.g., for all the flavors of hashing, stream encryption, authentication, authenticated encryption and pseudo-random bit generation. This talk will also focus on the different aspects that make the design of Keccak open, from the open source implementations on various platforms to initiatives to keep encouraging third-party cryptanalysis, such as the KeccakTools cryptanalysis software and the Crunchy Crypto Collision and Pre-image Contest.
Views: 2542 TalksDump
Cryptographic Hash Functions: Part 1
 
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Cryptographic Hash Functions Applications of Crypto Hash Functions Birthday Problem Secure Hash Algorithm (SHA)
Views: 8839 Scholartica Channel

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