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[HINDI] What is Cryptography? | Simple Practical in Android | Cryptography क्या होता है?
 
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Link to My Blog:- http://techdjdey.blogspot.in/ Video Editor used:- HitFilm 4 Express. https://hitfilm.com/ Screen recorder used:- iSpring Free Cam 8. https://www.ispringsolutions.com/ispring-free-cam Music:- Elektronomia-Sky High. https://www.youtube.com/watch?v=TW9d8vYrVFQ PLEASE LIKE AND SHARE THIS VIDEO. SUBSCRIBE to my Channel here:- https://www.youtube.com/channel/UCFKcqq9IOdwHdgfq6GEL8gw?sub_confirmation=1 My other videos:- https://www.youtube.com/channel/UCFKcqq9IOdwHdgfq6GEL8gw/videos IGNORE THESE BELOW: 1. what is the difference between steganography and cryptography c cryptography c cryptography example c cryptography library c cryptography tutorial cryptographic protocol e cryptography f# cryptography lightweight cryptography nonlinear cryptography o cryptography r cryptography what does cryptography have to do with math what does cryptography look like today what is a certificate in cryptography what is a cipher in cryptography what is a crib in cryptography what is a generator cryptography what is a hash cryptography what is a nonce in cryptography what is a public key cryptography what is a quantum cryptography what is a seed in cryptography what is a symmetric cryptography what is advantages of cryptography what is asymmetric key cryptography what is biometric cryptography what is bitcoin cryptography what is broken cryptography what is cbc cryptography what is chaos cryptography what is chaotic cryptography what is cipher cryptography what is classical cryptography what is cloud cryptography what is confusion and diffusion in cryptography with example what is conventional cryptography what is cryptographic hash function what is cryptographic hash functions examples what is cryptography what is cryptography algorithm what is cryptography and cryptanalysis what is cryptography and encryption what is cryptography and history what is cryptography and how is it used what is cryptography and how is it used in it security what is cryptography and its importance what is cryptography and its types what is cryptography and network security what is cryptography and network security ppt what is cryptography and network security wikipedia what is cryptography and number theory what is cryptography and steganography what is cryptography and theoretical informatics what is cryptography and why is it important what is cryptography and why is it used what is cryptography basics what is cryptography computer what is cryptography define the process of encryption and decryption what is cryptography definition what is cryptography doc what is cryptography encryption what is cryptography engineering what is cryptography error what is cryptography explain what is cryptography explain in detail what is cryptography explain its types what is cryptography hashing what is cryptography how is it used in it security what is cryptography in .net what is cryptography in c# what is cryptography in computer what is cryptography in computer network what is cryptography in computer security what is cryptography in cyber security what is cryptography in hindi what is cryptography in information security what is cryptography in java what is cryptography in mathematics what is cryptography in network security what is cryptography in networking what is cryptography in operating system what is cryptography in os what is cryptography in registry what is cryptography in security what is cryptography in simple language what is cryptography in web security what is cryptography key what is cryptography key management what is cryptography law what is cryptography library what is cryptography method what is cryptography module what is cryptography network security what is cryptography next generation what is cryptography pdf what is cryptography ppt what is cryptography provide an example what is cryptography quora what is cryptography rng seed what is cryptography salary what is cryptography salt what is cryptography service what is cryptography slideshare what is cryptography software what is cryptography system what is cryptography teach ict what is cryptography technique what is cryptography technology what is cryptography tools what is cryptography tutorial point what is cryptography types what is cryptography used for what is cryptography used for today what is cryptography video what is cryptography virus what is cryptography wikipedia what is cryptography with diagram what is cryptography with example what is cryptography yahoo what is cryptography yahoo answers what is cryptography youtube what is data cryptography what is des cryptography what is difference between cryptography and encryption what is difference between cryptography and steganography what is diffusion cryptography what is digital cryptography what is discrete logarithm in cryptography what is distributed cryptography what is dna cryptography what is dsa cryptography what is ecc cryptography what is elementary cryptography
Views: 2202 Dhrubajyoti Dey
What is digital signature?
 
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A digital signature is equivalent to a handwritten signature in paper, and a digital signature serves three basic purposes. Digital signature is commonly used for software distribution, financial transactions and other cases where it is important to detect forgery. Digital signatures are very popular with e-mail users. In this video, I will talk about the digital, uses, and the whole process of creating and sending digitally signed document over the Internet. Keep in mind, digital signature is not about encrypting document, just like paper-based signature. Playlist: Basic Cryptography https://www.youtube.com/watch?v=vk3py9M2IfE&list=PLSNNzog5eyduN6o4e6AKFHekbH5-37BdV Advanced Cryptography: https://www.youtube.com/watch?v=TmA2QWSLSPg&list=PLSNNzog5eydtwsdT__t5WtRgvpfMzpTc7 Please subscribe to my channel! Please leave comments or questions! Many thanks, Sunny Classroom
Views: 95456 Sunny Classroom
[Hindi] Explain  Cryptography - Encryption - Decryption - Private key - Public key
 
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[Hindi] Explain Cryptography - encryption - Decryption - Private key - Public key Friends in this video I explain what is cryptography in Hindi . I also explain what is encryption , decryption ,private key , public key etc . ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- DISCLAIMER The information provided in this video is to be used for educational purpose only. The video creater in no way responsible for any misuse of the information provided . All of the information in this video is meant to hep the viewer develop a hacker defence attitude in order to prevent tha attack discussed. In noway should you use the information to cause any kind of damage directly or indirectly . The word hack or hacking in this video should be regarded as ethical hack or ethical hacking respecively. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- NOTE : All content used is copyright to TECHACKTRICK, Use or commercial display or editing of the content without proper authorization is not allowed. THANK YOU..
Views: 284 techacktrick
How to Divide by "Zero" | 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 happens when you divide things that aren’t numbers? Tweet at us! @pbsinfinite Facebook: facebook.com/pbsinfinite series Email us! pbsinfiniteseries [at] gmail [dot] com RESOURCES Visual Group Theory by Nathan Carter https://www.amazon.com/Visual-Group-Theory-Problem-Book/dp/088385757X Geek37 - The silver ratio and the octagon https://www.youtube.com/watch?v=o-6kWnYfdVk Polygons, Diagonals, and the Bronze Mean by Antonia Redondo Buitrago https://link.springer.com/content/pdf/10.1007/s00004-007-0046-x.pdfl Previous Episodes: Beyond the Golden Ratio https://www.youtube.com/watch?v=MIxvZ6jwTuA&t=600s The Multiplication Multiverse https://www.youtube.com/watch?v=H4I2C3Ts7_w The Mathematics of Diffie Hillman Key Exchange https://www.youtube.com/watch?v=ESPT_36pUFc How to Break Cryptography https://www.youtube.com/watch?v=12Q3Mrh03Gk&t=130s&list=PLa6IE8XPP_glwNKmFfl2tEL0b7E9D0WRr&index=42 We all know you can’t divide by the number zero. But in some sense the notion of “dividing by zero” appears every time you use modular arithmetic! The structures that underlie this “modding business” are called equivalence relations and quotient sets. And that’s what I’d like to dive into today. Written and Hosted by Tai-Danae Bradley Produced by Rusty Ward Graphics by Ray Lux Assistant Editing and Sound Design by Mike Petrow and Meah Denee Barrington Made by Kornhaber Brown (www.kornhaberbrown.com) Special thanks to Roman Pinchuk for supporting us on our Converse level on Patreon. Along with thanks to Matthew O'Connor, Yana Chernobilsky, and John Hoffman who are supporting us on Patreon at the Identity level! And thanks to Nicholas Rose and Mauricio Pacheco for supporting us at the Lemma level!
Views: 103638 PBS Infinite Series
DEF CON 23 - Eijah - Crypto for Hackers
 
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Hacking is hard. It takes passion, dedication, and an unwavering attention to detail. Hacking requires a breadth of knowledge spread across many domains. We need to have experience with different platforms, operating systems, software packages, tools, programming languages, and technology trends. Being overly deficient in any one of these areas can add hours to our hack, or even worse, bring us total failure. And while all of these things are important for a well-rounded hacker, one of the key areas that is often overlooked is cryptography. In an era dominated by security breaches, an understanding of encryption and hashing algorithms provides a tremendous advantage. We can better hone our attack vectors, especially when looking for security holes. A few years ago I released the first Blu-Ray device key, AA856A1BA814AB99FFDEBA6AEFBE1C04, by exploiting a vulnerability in an implementation of the AACS protocol. As hacks go, it was a simple one. But it was the knowledge of crypto that made it all possible. This presentation is an overview of the most common crypto routines helpful to hackers. We'll review the strengths and weaknesses of each algorithm, which ones to embrace, and which ones to avoid. You'll get C++ code examples, high-level wrapper classes, and an open-source library that implements all the algorithms. We'll even talk about creative ways to merge algorithms to further increase entropy and key strength. If you've ever wanted to learn how crypto can give you an advantage as a hacker, then this talk is for you. With this information you'll be able to maximize your hacks and better protect your personal data. Speaker Bio: Eijah is the founder of demonsaw, a secure and anonymous content sharing platform, and a Senior Programmer at a world-renowned game development studio. He has over 15 years of software development and IT Security experience. His career has covered a broad range of Internet and mid-range technologies, core security, and system architecture. Eijah has been a faculty member at multiple colleges, has spoken about security and development at conferences, and holds a master’s degree in Computer Science. Eijah is an active member of the hacking community and is an avid proponent of Internet freedom.
Views: 47735 DEFCONConference
The Honeycombs of 4-Dimensional Bees ft. Joe Hanson | 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 Be sure to check out It's OK to be Smart's video on nature's love of hexagons https://youtu.be/Pypd_yKGYpA And try CuriosityStream today: http://curiositystream.com/infinite Use the promo code: infinite The image of the 3D honeycomb sheet used at 7:33 and within the thumbnail image is a recolored/modified version of Andrew Kepert's "Tesselation of space using truncated octahedra." https://commons.wikimedia.org/wiki/File:Truncated_octahedra.jpg The original of this image is used again at 8:33 and 9:29. The images of the Weaire-Phelan Structure, the truncated Hexagonal Trapezohedron and the Pyritohedron at 9:14 were created by Tomruen, links below: https://commons.wikimedia.org/w/index.php?curid=10471229 https://commons.wikimedia.org/w/index.php?curid=17024143 https://en.wikipedia.org/wiki/Weaire%E2%80%93Phelan_structure#/media/File:Irregular_dodecahedron.png Tweet at us! @pbsinfinite Facebook: facebook.com/pbsinfinite series Email us! pbsinfiniteseries [at] gmail [dot] com Previous Episode Why Computers are Bad at Algebra https://www.youtube.com/watch?v=pQs_wx8eoQ8 Why is there a hexagonal structure in honeycombs? Why not squares? Or asymmetrical blobby shapes? In 36 B.C., the Roman scholar Marcus Terentius Varro wrote about two of the leading theories of the day. First: bees have six legs, so they must obviously prefer six-sided shapes. But that charming piece of numerology did not fool the geometers of day. They provided a second theory: Hexagons are the most efficient shape. Bees use wax to build the honeycombs -- and producing that wax expends bee energy. The ideal honeycomb structure is one that minimizes the amount of wax needed, while maximizing storage -- and the hexagonal structure does this best. 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) Resources: Nature paper http://www.nature.com/news/how-honeycombs-can-build-themselves-1.13398#/b1 Hales’ proof of honeycomb conjecture: https://arxiv.org/pdf/math/9906042.pdf Older article on honeycomb conjecture http://www.ams.org/journals/bull/1964-70-04/S0002-9904-1964-11155-1/S0002-9904-1964-11155-1.pdf Overview of proof of honeycomb conjecture http://www.maa.org/frank-morgans-math-chat-hales-proves-hexagonal-honeycomb-conjecture http://www.npr.org/sections/krulwich/2013/05/13/183704091/what-is-it-about-bees-and-hexagons Kelvin -- http://soft-matter.seas.harvard.edu/images/1/17/Kelvin_Cell.pdf http://www.slate.com/articles/health_and_science/science/2015/07/hexagons_are_the_most_scientifically_efficient_packing_shape_as_bee_honeycomb.html
Views: 191288 PBS Infinite Series
Your Mind Is Eight-Dimensional - Your Brain as Math Part 3 | 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 How Algebraic topology can help us unlock the connection between neurological structure and function. This is Part 3 in our Your Brain as Math mini-series. Check out Part 1 here: https://www.youtube.com/watch?v=M0M3srBoTkY Check out Part 2 here: https://www.youtube.com/watch?v=rlI1KOo1gp4 Tweet at us! @pbsinfinite Facebook: facebook.com/pbsinfinite series Email us! pbsinfiniteseries [at] gmail [dot] com Previous Episode Simplicial Complexes - Your Brain as Math - Part 2 https://www.youtube.com/watch?v=rlI1KOo1gp4 Last episode, we learned that your brain can be modeled as a simplicial complex. And algebraic topology can tell us the Betti numbers of that simplicial complex. Why is that helpful? Let’s find out. 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) Resources: Cliques of Neurons Bound into Cavities Provide a Missing Link between Structure and Function http://journal.frontiersin.org/article/10.3389/fncom.2017.00048/full The Blue Brain Project: http://bluebrain.epfl.ch/ Barcodes: The Persistent Topology of Data https://www.math.upenn.edu/~ghrist/preprints/barcodes.pdf Network Neuroscience http://www.nature.com/neuro/journal/v20/n3/full/nn.4502.html Algebraic Topology https://www.math.cornell.edu/~hatcher/AT/ATpage.html Special thanks to Kathryn Hess and Florian Frick! Special thanks to Matthew O'Connor and Yana Chernobilsky who are supporting us on Patreon at the Identity level! And thanks to Mauricio Pacheco who is supporting us at the Lemma level!
Views: 162204 PBS Infinite Series
Cryptography PPT Asim
 
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Views: 98 MhdAsim
An Introduction to Blockchain with Mark Russinovich : Build 2018
 
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In this session, Mark explains how blockchains work, including how they use hashes, transactions, blocks and proof-of-work consensus algorithms to build distributed ledgers. He presents the capabilities of some of the most common blockchain networks, then describes how the COCO Framework addresses their limitations to make blockchains suitable for a wide variety of business consortiums. Create a Free Account (Azure): https://aka.ms/c9-azurefree
Views: 22414 Microsoft Developer
Bruce Schneier: "Data and Goliath: The Hidden Battles to Collect Your Data and Control Your World"
 
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Bruce Schneier, American cryptographer, computer security and privacy specialist, will be coming to Google to talk about his new book: "Data and Goliath: The Hidden Battles to Collect Your Data and Control Your World" "You are under surveillance right now. "Your cell phone provider tracks your location and knows who’s with you. Your online and in-store purchasing patterns are recorded, and reveal if you're unemployed, sick, or pregnant. Your e-mails and texts expose your intimate and casual friends. Google knows what you’re thinking because it saves your private searches. Facebook can determine your sexual orientation without you ever mentioning it. "The powers that surveil us do more than simply store this information. Corporations use surveillance to manipulate not only the news articles and advertisements we each see, but also the prices we’re offered. Governments use surveillance to discriminate, censor, chill free speech, and put people in danger worldwide. And both sides share this information with each other or, even worse, lose it to cybercriminals in huge data breaches. "Much of this is voluntary: we cooperate with corporate surveillance because it promises us convenience, and we submit to government surveillance because it promises us protection. The result is a mass surveillance society of our own making. But have we given up more than we’ve gained? In Data and Goliath, security expert Bruce Schneier offers another path, one that values both security and privacy. He shows us exactly what we can do to reform our government surveillance programs and shake up surveillance-based business models, while also providing tips for you to protect your privacy every day. You'll never look at your phone, your computer, your credit cards, or even your car in the same way again." (W.W. Norton & Co., Inc)
Views: 35077 Talks at Google
Alice and Bob Meet the Wall of Fire
 
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The Biggest Ideas in Science from Quanta Magazine. Coming November 2018. Pre-order now! https://mitpress.mit.edu/books/alice-and-bob-meet-wall-fire https://www.quantamagazine.org/ Facebook: https://www.facebook.com/QuantaNews Twitter: https://twitter.com/QuantaMagazine Sign up for our weekly newsletter: http://eepurl.com/6FnWj
Views: 1367 Quanta Magazine

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