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Python Encryption Tutorial with PyCrypto
 
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Sentdex.com Facebook.com/sentdex Twitter.com/sentdex How to use python to encrypt sensitive information, and later decrypt it, using PyCrypto! PyCrypto: https://www.dlitz.net/software/pycrypto/ The Code: http://sentdex.com/sentiment-analysisbig-data-and-python-tutorials/encryption-and-decryption-in-python-code-example-with-explanation/
Views: 73698 sentdex
EASY Caesar Cipher in Python
 
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Teehee, I whined about finding a video of a Caesar Cipher in Python that was 8 minutes long, when mine turned out to be 10... ;)
Views: 16110 John Hammond
Make Your Own Encryption Program
 
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***NEW PROJECT*** Mini Lunchbox Arcade -https://www.youtube.com/watch?v=h8nhqowESKg --~-- This video lays out the steps for creating a very simple encryption and decryption program using free tools. The programming language we will be using is VB Script. See if you can decrypt this text: wkjlue#vnrro#huxwxi#uxr\ You can find all the code for this program as well as an alternative for Apple computers at the project page: http://www.tinkernut.com/archives/4193
Views: 94628 Tinkernut
Python AES Encryption/Decryption using PyCrypto Tutorial
 
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In this tutorial, we will learn Encryption/Decryption for AES CBC mode using PyCrypto. All links for source code, text based tutorial and further reading material will be in the description below. Detailed Text Based Tutorial http://www.letscodepro.com/encryption-in-python-using-pycrypto/ Gihub Source Code Link https://github.com/the-javapocalypse/Python-File-Encryptor Further Reading Material http://searchsecurity.techtarget.com/definition/cipher https://defuse.ca/cbcmodeiv.htm https://www.di-mgt.com.au/cryptopad.html http://www.cryptofails.com/post/70059609995/crypto-noobs-1-initialization-vectors Please Subscribe! And like. And comment. That's what keeps me going. Follow Me Facebook: https://www.facebook.com/javapocalypse Instagram: https://www.instagram.com/javapocalypse
Views: 5725 Javapocalypse
Python Tutorial: PyCrypto AES Encryption/Decryption
 
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In this tutorial I will show you the most basic encryption/decryption program for AES (Advanced Encryption Standard) using PyCrypto and Python 3. Check out my website at www.thepyportal.com for my blog, source code, tutorials, and references. Oh and don't forget the lonely Like button up there!
Views: 22286 Zach King
Python Advanced Tutorial 10 - PyCrypto
 
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This is a tutorial on PyCrypto, looking at encrypting and decrypting files using AES-256. All Links and Slides will be in the description. Subscribe for more cool stuff! Block Cipher Modes - http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation Slides & files - https://www.mediafire.com/folder/b4om18885dp0k/Tutorial_10_-_PyCrypto Python - http://python.org/ Ubuntu - http://www.ubuntu.com/ DrapsTV Twitter - https://twitter.com/DrapsTV If you like what you see be sure to subscribe and thumbs up!
Views: 41190 DrapsTV
Cryptography: The Science of Making and Breaking Codes
 
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There are lots of different ways to encrypt a message, from early, simple ciphers to the famous Enigma machine. But it’s tough to make a code truly unbreakable. Hosted by: Michael Aranda ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, John Szymakowski, Fatima Iqbal, Justin Lentz, David Campos, and Chris Peters. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- 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: http://www.vectorsite.net/ttcode_04.html#m3 http://www.simonsingh.net/The_Black_Chamber/crackingprinciple.html http://book.itep.ru/depository/crypto/Cryptography_history.pdf http://www.cs.trincoll.edu/~crypto/historical/gronsfeld.html http://www.sans.org/reading-room/whitepapers/vpns/history-encryption-730 http://ftp.stmarys-ca.edu/jsauerbe/m10s11/chapter5.pdf http://www.turing.org.uk/scrapbook/ww2.html http://enigma.louisedade.co.uk/howitworks.html http://www.codesandciphers.org.uk/enigma/example1.htm http://www.pbs.org/wgbh/nova/military/how-enigma-works.html http://www.cs.miami.edu/~burt/learning/Csc609.051/notes/02.html
Views: 753132 SciShow
Bitcoin 101 - Elliptic Curve Cryptography - Part 4 - Generating the Public Key (in Python)
 
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Welcome to part four in our series on Elliptic Curve Cryptography. I this episode we dive into the development of the public key. In just 44 lines of code, with no special functions or imports, we produce the elliptic curve public key for use in Bitcoin. Better still, we walk you through it line by line, constant by constant. Nothing makes the process clearer and easier to understand than seeing it in straight forward code. If you've been wondering about the secp256k1 (arguably the most important piece of code in Bitcoin), well then this is the video for you. This is part 4 of our upcoming series on Elliptic Curves. Because of such strong requests, even though this is part 4, it is the first one we are releasing. In the next few weeks we will release the rest of the series. Enjoy. Here's the link to our Python code (Python 2.7.6): https://github.com/wobine/blackboard101/blob/master/EllipticCurvesPart4-PrivateKeyToPublicKey.py Here's the private key and the link to the public address that we use. Do you know why it is famous? Private Key : A0DC65FFCA799873CBEA0AC274015B9526505DAAAED385155425F7337704883E Public Address on Blockchain.info https://blockchain.info/address/1JryTePceSiWVpoNBU8SbwiT7J4ghzijzW Here's the private key we use at the end: 42F615A574E9CEB29E1D5BD0FDE55553775A6AF0663D569D0A2E45902E4339DB Public Address on Blockchain.info https://blockchain.info/address/16iTdS1yJhQ6NNQRJqsW9BF5UfgWwUsbF Welcome to WBN's Bitcoin 101 Blackboard Series -- a full beginner to expert course in bitcoin. Please like, subscribe, comment or even drop a little jangly in our bitcoin tip jar 1javsf8GNsudLaDue3dXkKzjtGM8NagQe. Thanks, WBN
Views: 19981 CRI
Building a Blockchain in Under 15 Minutes - Programmer explains
 
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I wanted to demonstrate that the concept of a blockchain that powers almost all of the modern cryptocurrencies is very simple at its core. Bitcoin, Ethereum, Litecoin etc all are based on this blockchain technology. Many people think that the blockchain is a complicated thing while at it's core its just a clever use case of hashes. Enjoy guys! CODE: https://github.com/ivan-liljeqvist/SimpleBlockchain JOIN MY EXCLUSIVE MAILING LIST FOR EVEN MORE BLOCKCHAIN KNOWLEDGE: http://eepurl.com/c0hyc9 ESSENTIAL CRYPTO RESOURCES Hardware wallets: ♥ TREZOR https://trezor.io ♥ LEDGER NANO S https://www.ledgerwallet.com/r/4607 To buy cryptocurrencies: ♥ Coinbase https://www.coinbase.com/join/529bab0ab08ded7080000019 JOIN SLACK COMMUNITY http://slack-invite-ivan-on-tech.herokuapp.com https://steemit.com/@ivanli
Views: 324579 Ivan on Tech
How To Make An Encryption And Decryption Program
 
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In this episode, James Greer shows you the people how to make a program that can encrypt text and then a program that can decrypt text so that way you can send a secret message. ----------------------------------------------------------------------------- Code for Encryption and Decryption program: Encryption program: set x = WScript.CreateObject("WScript.Shell") entxtde = inputbox("Enter text to be encoded") entxtde = StrReverse(entxtde) x.Run "%windir%\notepad" wscript.sleep 1000 x.sendkeys encode(entxtde) function encode(s) For i = 1 To Len(s) newtxt = Mid(s, i, 1) newtxt = Chr(Asc(newtxt)+3) coded = coded & newtxt Next encode = coded End Function Decryption Program: set x = WScript.CreateObject("WScript.Shell") entxtde = inputbox("Enter text to be encoded") entxtde = StrReverse(entxtde) x.Run "%windir%\notepad" wscript.sleep 1000 x.sendkeys encode(entxtde) function encode(s) For i = 1 To Len(s) newtxt = Mid(s, i, 1) newtxt = Chr(Asc(newtxt)-3) coded = coded & newtxt Next encode = coded End Function +++Site+++ http://www.jcseriestv.tk © JcSeriesTV 2012
Views: 62823 James Cameron
0x1. Asymmetric Cryptography (Basic RSA Implementation in Python)
 
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ليوم بش نحكيو عل Asymmetric Cryto واش معناها Crypto وعلاه نستعملو فيها ؟ وبعد بش نعملو Implementation صغيرة للAlgorithm تع RSA بال Python كان عجبك الفيديو تنساش تعمل Like و Share و Subscribe بش يوصلك جديد وحط في كومنتر الحاجات اللي تحبنا نفسروها ولا نهبطو علاها Tuto * كان تشوفني قلت معلومة غالطة تنساش بش تحط كومنتر تصلحني وتو نزيدوها في الفيديو * نعتذر كان فما مشكل في صوت ولا التصويرة ان شاء الله في الفيديوات القادمة يتصلح كل شيء ! --------- Github Repo for code : https://github.com/Mahd1/AlProgrammer_Tutorials -------- Facebook : https://www.facebook.com/alprogrammer --------- Personal Facebook : https://www.fb.com/profile.php?id=100004938638671 Twitter, Instagram : @mahdi_mmb
Learning to Code with Python: Lesson 1.10 - Secret Codes
 
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Learning to Code with Python Lesson 1.10: Secret Codes Support me on Patreon: http://patreon.com/kidscancode Learn more about the Caesar Cypher: http://en.wikipedia.org/wiki/Caesar_cipher Links: * Installing Python: http://kidscancode.org/python-install.html * Asking for help: [email protected]
Views: 12893 KidsCanCode
AES Encryption 2: AddRoundKey, SubBytes and ShiftRows
 
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In this vid we'll fill out the bodies to three of the steps in AES. These three steps are AddRoundKey, SubBytes and ShiftRows. The remaining steps to AES are rather fiddly, MixColumns and ExpandKey, so we'll look at those separately. I've also taken the opportunity to introduce Galois fields for the AddRoundKey section. AddRoundKey is really just a matter of performing XOR, but it helps to understand Galois fields before we come to the MixColumns step. Link to the S_Box on Wikipedia: https://en.wikipedia.org/wiki/Rijndael_S-box Link to the Finite Field/Galois Field Wikipedia page: https://en.wikipedia.org/wiki/Finite_field Become a patron and support What's a Creel programming vids on Patreon: www.patreon.com/whatsacreel Play Intergalactic Memory for Free: http://apps.microsoft.com/windows/en-us/app/intergalactic-memory-free/92c1094c-32f5-4730-86f3-c43c46affe52 Full version of Intergalactic Memory: http://apps.microsoft.com/windows/app/intergalactic-memory/ae9457e6-dbc1-468b-93cb-39f80835f19a FaceBook: www.facebook.com/pages/WhatsaCreel/167732956665435
Views: 27956 What's a Creel?
Python3 Advanced Tutorial 10 - PyCrypto
 
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This is a tutorial on PyCrypto, looking at encrypting and decrypting files using AES-256. All Links and Slides will be in the description. Subscribe for more cool stuff! Slides & files - https://www.mediafire.com/folder/blqyh7qotgu2r/Tutorial_10_-_PyCrypto Python - http://python.org/ Ubuntu - http://www.ubuntu.com/ Steam Group: http://steamcommunity.com/groups/DrapsTV Twitter: https://twitter.com/DrapsTV Ello: https://ello.co/drapstv If you like what you see be sure to subscribe and thumbs up!
Views: 21554 DrapsTV
Bitcoin Bot in Python - Binance Crypto Trading Bot - Chapter 2
 
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In Chapter 2 of Bitcoin Bot series I describe the development of the 'core' crypto trading bot functionality within RoibalBot.py email: [email protected] Python-Binance Roibal Github Fork Available Here: https://github.com/Roibal/python-binance/tree/master/examples Additional Info/Resources: https://medium.com/@BlockchainEng/how-to-build-an-automated-cryptocurrency-trading-bot-on-binance-with-python-2cd9b5874e44
Views: 2970 Blockchain Engineer
Cryptography For Beginners
 
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Cryptography is a complex and confusing subject. In this talk you will learn about the core components of cryptography used in software development: securing data with encryption, ensuring data integrity with hashes and digital signatures, and protecting passwords with key derivation functions. While learning how to use these components, you will also learn the best practices that drive strong cryptography. This talk won’t make you a cryptography expert but it will give you the knowledge necessary to use cryptography properly. No prior knowledge of cryptography is required for this presentation. EVENT: Dutch PHP Conference in 2018 SPEAKER: Adam Englander PERMISSIONS: Original video was published with the Creative Commons Attribution license (reuse allowed). CREDITS: Original video source: https://www.youtube.com/watch?v=KcjJ19geKmA
Views: 8776 Coding Tech
Python: Creating a better Caesar Cipher Program
 
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Creating a better program using the for loop, chr, ord, and modulo.
Views: 4460 Web Craftie
Python Bitcoin Tutorial for Beginners
 
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My Book: https://www.amazon.com/Building-Bitcoin-Websites-Beginners-Development/dp/153494544X A simple introduction tutorial to get started with the pybitcointools Python library. https://github.com/vbuterin/pybitcointools
Views: 51045 m1xolyd1an
Cryptography with Python : AES | packtpub.com
 
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This playlist/video has been uploaded for Marketing purposes and contains only selective videos. For the entire video course and code, visit [http://bit.ly/2jeErfC]. The aim of this video is to explore AES and Private-key encryption. We will take a look at key and block size. We will also explore AES in python alongwith Confusion and Diffusion. • AES and Private-key encryption • Key and Block size • Confusion and diffusion For the latest Networking & Servers video tutorials, please visit http://bit.ly/2lkC8Kb Find us on Facebook -- http://www.facebook.com/Packtvideo Follow us on Twitter - http://www.twitter.com/packtvideo
Views: 225 Packt Video
Build on Serverless | Building the "Simple Crypto Service" Python Project
 
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To catch up on more AWS Twitch streams and to see the upcoming calendar, visit https://amzn.to/2HEcAjS. In this interactive coding session, we built a Python Serverless Application using SAM (Serverless Application Model) with AWS Specialist Solutions Architect, Heitor Lessa and learned how to automate the deployment and monitoring of the application. To learn more about serverless computing, check out https://aws.amazon.com/serverless/.
Views: 1140 Amazon Web Services
Visual Cryptography
 
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Hiding your images in style since 1994. Copyright Protection Scheme for Digital Images Using Visual Cryptography and Sampling Methods Ching-Sheng Hsu Young-Chang Hou July 2005 RIT, IMGS-362 Image Processing & Computer Vision II
Views: 24183 Matt Donato
AES Encryption 5: Expand Keys and Encryption Flow
 
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In this vid we'll complete the encryption side of our implementation of AES. I've decided not to go though decryption, which is much the same type of logic in reverse, and with the opposite look-up tables. If you actually have to include AES in your programs, use assembly or AES intrinsics. Our implementation is not secure, and it's very slow. Modern CPU's have an instruction set called the AES Instruction Set, which makes this whole task a lot easier, and a lot faster. The babies you can hear at point are my sweet little nieces. I live with my bro and his gf. They've just had twins. They sound like they're being attacked by an elephant, but they are just hungry. They quieten down when their ma feeds them. I hope this vid series was helpful for folks studying the algorithm. There's very few examples of exactly how to code this thing. Anywho, I really wanted to make a good go of it. Well here it is! Now we can look at something completely different! Well probably not that different...? Music Channel: https://www.youtube.com/channel/UC2nWRGqPL6O-Lm8mexWhISQ Patreon: www.patreon.com/whatsacreel FaceBook: www.facebook.com/pages/WhatsaCreel/167732956665435 Twitter: https://twitter.com/WhatsACreel
Views: 14911 What's a Creel?
Hashing, Encryption, Blockchain & Bitcoin Mining with Python
 
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This video illustrates the concepts of Hashing, Encryption, Blockchain and Bitcoin Mining by the use of straightforward Python code. It is from a free Webinar by The Python Quants. Check out our Python for Finance Online Training Classes, including the first University Certificate in Python for Finance. http://training.tpq.io
Views: 11201 Yves Hilpisch
Cryptography: Transposition Cipher
 
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This lesson explains how to encrypt and decrypt a message using a transposition cipher. Site: http://mathispower4u.com
Views: 49422 Mathispower4u
Creating a blockchain with Javascript (Blockchain, part 1)
 
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Learn how to write your own Blockchain with JavaScript. In this video I'll show you what is behind a blockchain by using simple code. It's not a complete implementation, but enough to understand how blockchains work and how they guarantee that blocks can never be changed. After creating our blockchain we'll try and tamper with it. This will demonstrate a blockchains ability to detect fraud. Next video (implementing proof-of-work): https://youtu.be/HneatE69814 💰 Want to buy Bitcoin or Ethereum? Buy for $100 and get $10 free (through my affiliate link): https://www.coinbase.com/join/59284524822a3d0b19e11134 ► Source code Available on GitHub: https://github.com/SavjeeTutorials/SavjeeCoin ► About me 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be ✉️ Subscribe to newsletter: https://goo.gl/nueDfz 👍🏻 Like my Facebook page: https://www.facebook.com/savjee
Compiling Crypto++ library into the Microsoft Visual C++ Environment + Running Sample program
 
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Link to the Blod Entry on Crypto++------http://programmingknowledgeblog.blogspot.de/2013/04/compiling-and-integrating-crypto-into.html c++ - about encryption and decryption using Crypto++ library Compiling and Integrating Crypto++ into the Microsoft Visual C++ .c++ - How do I install Crypto++ in Visual Studio 2010 Windows 7. Running Sample program Example How to build C++ cryptographic library, Crypto++ - NuLL CryptoPP DLL How to build Crypto++ dynamically on Microsoft Windows and Visual C++? ... is that your are linking against different versions of the run-time libraries....Visual C++ Crypto++ Library 5.6.2 - a Free C++ Class Library of Cryptographic encryption.cryptopp - Re: How to use Crypto++ with Visual C++ 6.0 Searches related to how to compile and run crypto++ in visual c++ ------------------Online Courses to learn---------------------------- Java - https://bit.ly/2H6wqXk C++ - https://bit.ly/2q8VWl1 AngularJS - https://bit.ly/2qebsLu Python - https://bit.ly/2Eq0VSt C- https://bit.ly/2HfZ6L8 Android - https://bit.ly/2qaRSAS Linux - https://bit.ly/2IwOuqz AWS Certified Solutions Architect - https://bit.ly/2JrGoAF Modern React with Redux - https://bit.ly/2H6wDtA MySQL - https://bit.ly/2qcF63Z ----------------------Follow--------------------------------------------- My Website - http://www.codebind.com My Blog - https://goo.gl/Nd2pFn My Facebook Page - https://goo.gl/eLp2cQ Google+ - https://goo.gl/lvC5FX Twitter - https://twitter.com/ProgrammingKnow Pinterest - https://goo.gl/kCInUp Text Case Converter - https://goo.gl/pVpcwL -------------------------Stuff I use to make videos ------------------- Stuff I use to make videos Windows notebook – http://amzn.to/2zcXPyF Apple MacBook Pro – http://amzn.to/2BTJBZ7 Ubuntu notebook - https://amzn.to/2GE4giY Desktop - http://amzn.to/2zct252 Microphone – http://amzn.to/2zcYbW1 notebook mouse – http://amzn.to/2BVs4Q3 ------------------Facebook Links ---------------------------------------- http://fb.me/ProgrammingKnowledgeLearning/ http://fb.me/AndroidTutorialsForBeginners http://fb.me/Programmingknowledge http://fb.me/CppProgrammingLanguage http://fb.me/JavaTutorialsAndCode http://fb.me/SQLiteTutorial http://fb.me/UbuntuLinuxTutorials http://fb.me/EasyOnlineConverter
Views: 18469 ProgrammingKnowledge
Polygraphic Part 2 - Hill Ciphers Examples/Encryption/Decryption
 
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A beginner's guide to Polygraphic Ciphers, Part 2. (Hill Ciphers Examples/Encryption/Decryption)
Views: 95682 Daniel Rees
PlayFair Cipher Encryption & Decryption | Polygraphic Substitution Cipher
 
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PlayFair cipher is a polygram or polygraphic cipher which means it operates on block of characters (2 characters in this case) instead of single characters. Polygram or Polygraphic ciphers work with block of characters rather than single character itself. In this video tutorial we will understand the concept, encryption and decryption process of Playfair Cipher. Playfair Cipher operates on block of 2 characters each during encryption and decryption process. In this video tutorial we study the basic principles of Network security and also see the concept of Cryptography by understanding a basic example. Principles of Network Security to be discussed in this video are as follows: Confidentiality Authentication Integrity Non-repudiation Access Control Availability We will also learn the concept of Cryptography in this tutorial. Here's the definition of Cryptography: Cryptography is the art of achieving security by encoding messages to make them non-readable This video is a continuation of the previous video so make sure you check that video as well so that you get to know some basics of Network security. Download the FREE Network Security App on Google Playstore for Android - https://play.google.com/store/apps/details?id=com.intelisenze.networksecuritytutorials Simple Snippets Official Website - https://simplesnippets.tech/ Simple Snippets on Facebook- https://www.facebook.com/simplesnippets/ Simple Snippets on Instagram- https://www.instagram.com/simplesnipp... Simple Snippets Google Plus Page- https://plus.google.com/+SimpleSnippets Simple Snippets email ID- [email protected] For Classroom Coaching in Mumbai for Programming & other IT/CS Subjects Checkout UpSkill Infotech - https://upskill.tech/ UpSkill is an Ed-Tech Company / Coaching Centre for Information Technology / Computer Science oriented courses and offer coacing for various Degree courses like BSc.IT, BSc.CS, BCA, MSc.IT, MSc.CS, MCA etc. Contact via email /call / FB /Whatsapp for more info email - [email protected] We also Provide Certification courses like - Android Development Web Development Java Developer Course .NET Developer Course Check us out on Social media platforms like Facebook, Instagram, Google etc Facebook page - https://www.facebook.com/upskillinfotech/ Insta page - https://www.instagram.com/upskill_infotech/ Google Maps - https://goo.gl/maps/vjNtZazLzW82
Views: 5700 Simple Snippets
Playfair Cipher Explained
 
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An animated attempt of explaining the Playfair cipher. This tutorial includes rules of the cipher followed by an example to clear things up. This was a part of my final year project to create a learning aid. I decided to upload this so the animation won't go to waste. All feedbacks welcome. Special thanks to Olivia Beck for creating the background image
Views: 153861 Kenny Luminko
Python Tutorial for Beginners - Learn Python by Building a Blockchain & Cryptocurrency
 
02:09:17
Python is extremely important and popular these days. You can use Python for web development, data science, machine learning, utility scripts or your first steps into programming. OR you use it to build your own Blockchain. ---------- Take the full course: https://www.udemy.com/learn-python-by-building-a-blockchain-cryptocurrency/?couponCode=ACAD_YT Download Python: https://www.python.org/downloads/ Want to learn something totally different? Check out all other courses: https://academind.com/learn/our-courses ---------- • You can follow Max on Twitter (@maxedapps). • And you should of course also follow @academind_real. • You can also find us on Facebook.(https://www.facebook.com/academindchannel/) • Or visit our Website (https://www.academind.com) and subscribe to our newsletter! See you in the videos! ---------- Academind is your source for online education in the areas of web development, frontend web development, backend web development, programming, coding and data science! No matter if you are looking for a tutorial, a course, a crash course, an introduction, an online tutorial or any related video, we try our best to offer you the content you are looking for. Our topics include Angular, React, Vue, Html, CSS, JavaScript, TypeScript, Redux, Nuxt.js, RxJs, Bootstrap, Laravel, Node.js, Progressive Web Apps (PWA), Ionic, React Native, Regular Expressions (RegEx), Stencil, Power BI, Amazon Web Services (AWS), Firebase or other topics, make sure to have a look at this channel or at academind.com to find the learning resource of your choice!
Views: 15751 Academind
RSA Key Generation, Signatures and Encryption using OpenSSL
 
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Demonstration of using OpenSSL to create RSA public/private key pair, sign and encrypt messages using those keys and then decrypt and verify the received messages. Commands used: openssl. Created by Steven Gordon on 7 March 2012 at Sirindhorn International Institute of Technology, Thammasat University, Thailand.
Views: 55929 Steven Gordon
The one-time pad | Journey into cryptography | Computer Science | Khan Academy
 
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The perfect cipher Watch the next lesson: https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/frequency-stability?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/polyalphabetic-cipher?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: 406878 Khan Academy
Symmetric Key and Public Key Encryption
 
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Modern day encryption is performed in two different ways. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Using the same key or using a pair of keys called the public and private keys. This video looks at how these systems work and how they can be used together to perform encryption. Download the PDF handout http://itfreetraining.com/Handouts/Ce... Encryption Types Encryption is the process of scrambling data so it cannot be read without a decryption key. Encryption prevents data being read by a 3rd party if it is intercepted by a 3rd party. The two encryption methods that are used today are symmetric and public key encryption. Symmetric Key Symmetric key encryption uses the same key to encrypt data as decrypt data. This is generally quite fast when compared with public key encryption. In order to protect the data, the key needs to be secured. If a 3rd party was able to gain access to the key, they could decrypt any data that was encrypt with that data. For this reason, a secure channel is required to transfer the key if you need to transfer data between two points. For example, if you encrypted data on a CD and mail it to another party, the key must also be transferred to the second party so that they can decrypt the data. This is often done using e-mail or the telephone. In a lot of cases, sending the data using one method and the key using another method is enough to protect the data as an attacker would need to get both in order to decrypt the data. Public Key Encryption This method of encryption uses two keys. One key is used to encrypt data and the other key is used to decrypt data. The advantage of this is that the public key can be downloaded by anyone. Anyone with the public key can encrypt data that can only be decrypted using a private key. This means the public key does not need to be secured. The private key does need to be keep in a safe place. The advantage of using such a system is the private key is not required by the other party to perform encryption. Since the private key does not need to be transferred to the second party there is no risk of the private key being intercepted by a 3rd party. Public Key encryption is slower when compared with symmetric key so it is not always suitable for every application. The math used is complex but to put it simply it uses the modulus or remainder operator. For example, if you wanted to solve X mod 5 = 2, the possible solutions would be 2, 7, 12 and so on. The private key provides additional information which allows the problem to be solved easily. The math is more complex and uses much larger numbers than this but basically public and private key encryption rely on the modulus operator to work. Combing The Two There are two reasons you want to combine the two. The first is that often communication will be broken into two steps. Key exchange and data exchange. For key exchange, to protect the key used in data exchange it is often encrypted using public key encryption. Although slower than symmetric key encryption, this method ensures the key cannot accessed by a 3rd party while being transferred. Since the key has been transferred using a secure channel, a symmetric key can be used for data exchange. In some cases, data exchange may be done using public key encryption. If this is the case, often the data exchange will be done using a small key size to reduce the processing time. The second reason that both may be used is when a symmetric key is used and the key needs to be provided to multiple users. For example, if you are using encryption file system (EFS) this allows multiple users to access the same file, which includes recovery users. In order to make this possible, multiple copies of the same key are stored in the file and protected from being read by encrypting it with the public key of each user that requires access. References "Public-key cryptography" http://en.wikipedia.org/wiki/Public-k... "Encryption" http://en.wikipedia.org/wiki/Encryption
Views: 405635 itfreetraining
Affine Cipher Encryption
 
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gcd: https://www.youtube.com/watch?feature=player_detailpage&v=WA4nP-iPYKE Decryption: http://youtu.be/XFxFPBKFVe8
Views: 17960 Theoretically
Transposition Ciphers - Encryption/Decryption
 
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A beginner's guide to Transposition Ciphers (Encryption/Decryption).
Views: 64648 Daniel Rees
[Cryptography] : Reverse Cipher with Python
 
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For educational purposes only, I am not responsible for you illegal activities!
Views: 572 Amine Ess
BASIC ENCRYPTION AND DECRYPTION! :: Python Coding Tutorials :: 6
 
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Welcome to Coding Tutorials with Tyler! In these videos I'll teach you what I know about Computer Programming using a basic and widely used language Python! We'll go over basics of coding in Python and teach logic in fun and easy ways. If you'd like to get Python free of charge: https://www.python.org/download/releases/3.0/ Thanks so much for watching! Discord: https://discord.gg/W4zJZcs Support me and charity by buying games using my referral link on Humble Bundle! It's a win win scenario, you have fun while also helping out a great charitable cause. (and supporting me if you'd like!) : https://www.humblebundle.com/?partner=olexa&charity=144206 Get games at a way lower price on chrono.gg! Use my referral link to directly support me while also getting amazing deals on a game. There's a new game every 24 hours! : https://chrono.gg/Olexa Outro Music by IH34RT: https://m.soundcloud.com/ih34rt-official-music Adventures by A Himitsu https://soundcloud.com/a-himitsu Creative Commons — Attribution 3.0 Unported— CC BY 3.0 http://creativecommons.org/licenses/b... Music released by Argofox https://youtu.be/8BXNwnxaVQE Music provided by Audio Library https://youtu.be/MkNeIUgNPQ8 Summer Spliffs by Broke For Free http://brokeforfree.bandcamp.com/ Creative Commons — Attribution 3.0 Unported — CC BY 3.0 https://creativecommons.org/licenses/... Music promoted by Audio Library https://youtu.be/emnDN1l0pzc If you need to contact me: Discord: https://discord.gg/W4zJZcs Twitch: https://www.twitch.tv/olexastream Twitter: https://twitter.com/OlexaKid Reddit: https://www.reddit.com/user/OlexaKid64/ YouTube: http://www.youtube.com/c/OlexaYT Business Email: [email protected]
Views: 625 Olexa
Implementation of Homomorphic Encryption: Paillier
 
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https://asecuritysite.com/encryption/pal_ex
Views: 1067 Bill Buchanan OBE
Bitcoin Bot - Cryptocurrency Portfolio & Index - Chapter 3 - Python Binance Crypto Trading Bot
 
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In this video we discuss Cryptocurrency Portfolios and the Roibal Cryptocurrency Index (25 Largest cryptocurrency Market Cap Coins, $10K per positon bought on 4/21/2018). email: [email protected] All code Available on Github: https://github.com/Roibal/Cryptrack https://github.com/Roibal/python-binance/tree/master/examples https://medium.com/@BlockchainEng/how-to-build-an-automated-cryptocurrency-trading-bot-on-binance-with-python-2cd9b5874e44
Views: 1433 Blockchain Engineer
Crypto 101
 
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Laurens Van Houtven An introduction to applied cryptography and information security suitable for programmers of all ages and skill levels.
Views: 50714 Next Day Video
Basic Password Encryption Speed Coding in Python
 
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A very simple password encryption speed coding video. The source code is here (It has been updated to further prevent people from cracking the encrypted password). https://github.com/leshawn-rice/Password-Encryption-Python-
Views: 227 Jim Halpert
Encryption using a dictionary [Part 1]
 
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In this lesson we look at how we can encrypt a string using a dictionary.
Views: 5330 Andy Dolinski
Pycon UK 2016: Using Python for National Cipher Challenge
 
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Thomas Campbell The National Cipher Challenge is run by The University of Southampton every year and invites people to break ciphers of varying difficulty, from simple Caesar ciphers to Enigma and beyond. In this talk, I’ll describe how I used python to tackle the 2015 challenge and demonstrate some of the code I used in doing so.
Views: 1062 PyCon UK
Cipher Block Chaining Mode - 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: 52331 Udacity
Crypto Arbitrage 101 - Bitcoin Python Binance Crypto Trading Bot - Ch 5.15
 
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In this video I explain the creation of triangular arbitrage function with a cryptocurrency trading bot. Code Available Here: https://github.com/Roibal/Cryptocurrency-Trading-Bots-Python-Beginner-Advance Read more at https://medium.com/@BlockchainEng/how-to-code-a-cryptocurrency-arbitrage-bot-in-python-da57637b9926 Join Algo Trading Bot discussion: LinkedIn: https://www.linkedin.com/groups/12121918 Telegram: https://t.co/YlGP1zvvw4 CCXT Github Code: https://github.com/ccxt/ccxt
Views: 371 Blockchain Engineer
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: 41625 Seytonic
Caesar Wheel Encryption In Python
 
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This is a program to transfer strings/text into a encrypted text/string using the caesar wheel (google it..), really simple. Code: http://www.codeshare.io/MIwEz (if you know python well, you should be able to learn how this works) Screen Recorder: BroadCaster Video Editer: Movie Maker (windows 8) The Text Editor I use in the video is called "sublime text2", it's sort of a IDE, but it's more on the side of being a text editor, as it can't get user input Song: Kuusou Mesorogiwi - Mirai Nikki OP 1 [piano] https://www.youtube.com/watch?v=drlB2RT_XiA
Views: 195 Leigh
Jose Ortega - Python Security & Cryptography
 
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Jose Ortega - Python Security & Cryptography [EuroPython 2015] [22 July 2015] [Bilbao, Euskadi, Spain] The talk would aim to introduce cryptography and security from the developer point of view, showing ways to encrypt information with Python scripts and more sensitive information in web applications using django. I will introduce to security in python ,showing some libraries that allow encryption and decryption like PyCrypto or M2Crypto,comparing theses libraries with the cryptography module.At the same time,I will show the main ciphers and hashing algorithms used in these libraries like AES,DES,RSA and some examples illustrating each case.I wil show other techniques like steganography for hiding information in files(images,documents,programs) with some libraries like Stepic or ezPyCrypto. Finally,I will comment OWASP Python Security Project where we can find some useful practices and secure coding guidelines for detecting potential security vulnerabilities in our applications like SQL injection or Cross-site scripting. **Slides** [https://speakerdeck.com/jmortega/python-cryptography-and-security][1] [1]: https://speakerdeck.com/jmortega/python-cryptography-and-security
C Programming Tutorial - XOR File Encryption Program
 
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Hi, time for another programming tutorial. This time we will be making a program that performs a very simple encryption onto a file with a user supplied key. This tutorial is good for beginners to intermediates. Please note, I made a slight mistake, the buffer is not needed here. Tutorial + Source Code http://www.autolysis.tk/Tech/Programming/rpn/index.html
Views: 12407 mewrox99