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Math Behind Bitcoin and Elliptic Curve Cryptography (Explained Simply)
 
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Elliptic curve cryptography is the backbone behind bitcoin technology and other crypto currencies, especially when it comes to to protecting your digital assets. So in todays video we will look at the math behind elliptic curve cryptography and how it protects your private key. ================================================= 💰Patreon: https://www.patreon.com/Aimstone 🚀Let’s connect on Steemit: https://steemit.com/@astakhiv92 =================================================== 💰Get a Coinbase Wallet! - https://www.coinbase.com/join/5a4bf25... Sign up! 💰Get a Binance Wallet! - https://www.binance.com/?ref=21867060 Sign up! =================================================== ★ Any donation is highly appreciated. 🔑 BTC Wallet Address: 16EtKHG2rwH2NqA4MniK4JRhzPyv5AeiER 🔑 ETH Wallet Address: 0x1db0fa9a379e46cb205a39a0766e30d3e3d0d11e 🔑 LTC Wallet Address: LRcmBavhskBURqmw1sujV5LS8WUPvfaNj8 =================================================== ➤ Bitcoin’s Mass Adoption: https://www.youtube.com/watch?v=_moYqnznICg ➤ LTC Price Prediction: https://www.youtube.com/watch?v=hd8WPRO1Pbk ➤ Bitcoin ETF: https://www.youtube.com/watch?v=NW-ImVwZTZI ==================================================== Thank you so much for watching! ====================================================
Views: 5270 Aimstone
Blockchain tutorial 11: Elliptic Curve key pair generation
 
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This is part 11 of the Blockchain tutorial explaining how the generate a public private key using Elliptic Curve. In this video series different topics will be explained which will help you to understand blockchain. Bitcoin released as open source software in 2009 is a cryptocurrency invented by Satoshi Nakamoto (unidentified person or group of persons). After the introduction of Bitcoin many Bitcoin alternatives were created. These alternate cryptocurrencies are called Altcoins (Litecoin, Dodgecoin etc). Bitcoin's underlying technology is called Blockchain. The Blockchain is a distributed decentralized incorruptible database (ledger) that records blocks of digital information. Each block contains a timestamp and a link to a previous block. Soon people realises that there many other use cases where the Blockchain technology can be applied and not just as a cryptocurrency application. New Blockchain platforms were created based on the Blockchain technology, one of which is called Ethereum. Ethereum focuses on running programming code, called smart contracts, on any decentralized application. Using the new Blockchain platforms, Blockchain technology can be used in supply chain management, healthcare, real estate, identity management, voting, internet of things, etcetera, just to name a few. Today there is a growing interest in Blockchain not only in the financial sector but also in other sectors. Explaining how Blockchain works is not easy and for many the Blockchain technology remains an elusive concept. This video series tries to explain Blockchain to a large audience but from the bottom up. Keywords often used in Blockchain conversation will be explained. Each Blockchain video is short and to the point. It is recommended to watch each video sequentially as I may refer to certain Blockchain topics explained earlier. Check out all my other Blockchain tutorial videos https://goo.gl/aMTFHU Subscribe to my YouTube channel https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: http://www.mobilefish.com/developer/blockchain/blockchain_quickguide_tutorial.html The presentation used in this video tutorial can be found at: http://www.mobilefish.com/developer/blockchain/blockchain_quickguide_tutorial.html The python script used in the video: https://www.mobilefish.com/download/cryptocurrency/bitcoin_ec_key_generation.py.txt Cryptocurrency address generator and validator: https://www.mobilefish.com/services/cryptocurrency/cryptocurrency.html Desmos graph: https://www.desmos.com/calculator/kkj2efqk5x James D'Angelo, Bitcoin 101 Elliptic Curve Cryptography Part 4: https://youtu.be/iB3HcPgm_FI #mobilefish #blockchain #bitcoin #cryptocurrency #ethereum
Views: 16979 Mobilefish.com
Elliptic Curve Arithmetic and Bitcoin | Nathan Dalaklis
 
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Bitcoin is a cryptocurrency that uses elliptic curves in the ECDSA. Since cryptosystems often require some form of arithmetic to encode and decode information we have a couple questions to ask; What are elliptic curves? And how can we do arithmetic on an elliptic curve? ________ Standards for Efficent Cryptography Group: http://www.secg.org Elliptic Curve Addition Modulo p Applet: https://cdn.rawgit.com/andreacorbellini/ecc/920b29a/interactive/modk-add.html ________ Last video: http://bit.ly/2Ms3VCr The CHALKboard: http://www.youtube.com/c/CHALKboard Find the CHALKboard on Facebook: http://bit.ly/CHALKboard _____________________ Interested in the person behind the camera? See what Nathan's up to on these platforms! Instagram: http://bit.ly/INSTAnatedlock Twitter: http://bit.ly/TWITTnatedlock _____________________ ---------------------------------- #CHALK #Bitcoin #EllipticCurves _____________________ ----------------------------------
Views: 241 CHALK
Bitcoin ECDSA- Elliptic curve Digital Signature
 
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This video explains through flowcharts the elliptic curve digital signature algorithms: signing and verifying functions.
Views: 2117 Dr Abdel lam
Bitcoin 101   Elliptic Curve Cryptography   Part 5   The Magic of Signing & Verifying
 
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Vídeo original: https://youtu.be/U2bw_N6kQL8 There is nothing more magical in Bitcoin, or all of cryptography than digital signatures. And the most magical step of all is the verification. This is the step we focus on in this video, generating the entire process in just 50 lines of code (no imports or special function calls!) and watching as the Private Key falls out of the math entirely! So beautiful. The receiver is left with proof of the sender, confirmation of the message and no way of retrieving the senders private key. This is magic indeed. Here's the link to the Python code: https://github.com/wobine/blackboard1... 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: 4133 Fabio Carpi
Bitcoin 101   Elliptic Curve Cryptography   Part 4   Generating the Public Key in Python
 
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Vídeo original: https://youtu.be/iB3HcPgm_FI 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/blackboard1... 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/1JryT... Here's the private key we use at the end: 42F615A574E9CEB29E1D5BD0FDE55553775A6AF0663D569D0A2E45902E4339DB Public Address on Blockchain.info https://blockchain.info/address/16iTd... 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: 5932 Fabio Carpi
Elliptic Curve Cryptography Overview
 
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John Wagnon discusses the basics and benefits of Elliptic Curve Cryptography (ECC) in this episode of Lightboard Lessons. Check out this article on DevCentral that explains ECC encryption in more detail: https://devcentral.f5.com/articles/real-cryptography-has-curves-making-the-case-for-ecc-20832
Views: 163463 F5 DevCentral
Bitcoin - Digital Signatures
 
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A high-level explanation of digital signature schemes, which are a fundamental building block in many cryptographic protocols. More free lessons at: http://www.khanacademy.org/video?v=Aq3a-_O2NcI 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: 140966 Khan Academy
The Math Behind Bitcoin - Elliptic Curves
 
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This is episode two of the Math Behind Bitcoin. In an effort to understand the math behind bitcoin, I try to explain it to you guys. If there are any mistakes or suggestions, please put it in the comment section below. Thanks! Resources - https://www.coindesk.com/math-behind-bitcoin/ - https://eng.paxos.com/blockchain-101-foundational-math - https://www.cryptocoinsnews.com/explaining-the-math-behind-bitcoin/ - Mastering Bitcoin by Andreas Antonopoulos
Views: 1788 Kevin Su
Breaking ECDSA (Elliptic Curve Cryptography) - rhme2 Secure Filesystem v1.92r1 (crypto 150)
 
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We are going to recover a ECDSA private key from bad signatures. Same issue the Playstation 3 had that allowed it to be hacked. -=[ 🔴 Stuff I use ]=- → Microphone:* https://amzn.to/2LW6ldx → Graphics tablet:* https://amzn.to/2C8djYj → Camera#1 for streaming:* https://amzn.to/2SJ66VM → Lens for streaming:* https://amzn.to/2CdG31I → Connect Camera#1 to PC:* https://amzn.to/2VDRhWj → Camera#2 for electronics:* https://amzn.to/2LWxehv → Lens for macro shots:* https://amzn.to/2C5tXrw → Keyboard:* https://amzn.to/2LZgCFD → Headphones:* https://amzn.to/2M2KhxW -=[ ❤️ Support ]=- → per Video: https://www.patreon.com/join/liveoverflow → per Month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join -=[ 🐕 Social ]=- → Twitter: https://twitter.com/LiveOverflow/ → Website: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/ -=[ 📄 P.S. ]=- All links with "*" are affiliate links. LiveOverflow / Security Flag GmbH is part of the Amazon Affiliate Partner Programm. #CTF #Cryptography
Views: 29882 LiveOverflow
Elliptic Curve Diffie Hellman
 
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A short video I put together that describes the basics of the Elliptic Curve Diffie-Hellman protocol for key exchanges.
Views: 112758 Robert Pierce
Elliptic Curve Cryptography & Diffie-Hellman
 
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Today we're going over Elliptic Curve Cryptography, particularly as it pertains to the Diffie-Hellman protocol. The ECC Digital Signing Algorithm was also discussed in a separate video concerning Bitcoin's cryptography.
Views: 52339 CSBreakdown
Dev++ 01-01-EN | Foundational Math, ECDSA and Transactions - Jimy Song
 
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Jimmy Song explains the basics of cryptography that serves as a foundation for Bitcoin transactions. This course provides in-depth coverage of Elliptic Curve Digital Signature Algorithm (ECDSA), how ECDSA functions and how it is used to provide signing and verification of Bitcoin transactions. After covering the basics, Jimmy dives into and explains Bitcoin transaction data structure, including Bitcoin scripting opcodes - how these transactions are formed and interpreted by Bitcoin nodes. This session contains multiple sections at following timestamps: Finite Fields - https://youtu.be/e6voIwB-An4?t=4m50s Elliptic Curves - https://youtu.be/e6voIwB-An4?t=21m11s Elliptic Curves over Finite Fields - https://youtu.be/e6voIwB-An4?t=32m32s Mathematical Group - https://youtu.be/e6voIwB-An4?t=37m59s Bitcoin Addresses - https://youtu.be/e6voIwB-An4?t=50m08s ECDSA - https://youtu.be/e6voIwB-An4?t=57m42s Bitcoin Transactions - https://youtu.be/e6voIwB-An4?t=1h10m14s Bitcoin Scripts - https://youtu.be/e6voIwB-An4?t=1h17m27s Transaction Validation - https://youtu.be/e6voIwB-An4?t=1h25m Pay to Script Hash - https://youtu.be/e6voIwB-An4?t=1h29m27s To complete tasks in this course, you will need to setup the appropriate python environment as follows: Install python3, virtualenv, git $ git clone http://github.com/bitcoinedge/devplusplus $ cd devplusplus $ virtualenv -p python3 .venv $ . .venv/bin/activate $ pip install -r requirements.txt $ jupyter notebook Your browser should open up a jupyter notebook For additional information, please visit http://bitcoinedge.org
Views: 2629 Bitcoin Edge
Andreas Antonopoulos on Bitcoin Wallet Encryption
 
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In this video, Andreas Antonopoulos covers Elliptic Curve Crypto (ECC) & EC Digital Signature Algorithm (ECDSA), Key formats (hex, compressed, b58, b58check, Key types, Key mnemonic word list (BIP0039), and Key encryption (BIP0038).
Views: 15873 Dana Wright
Keys, addresses, and ECC - Breaking Down Bitcoin Ep. 3
 
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Episode 3 covers Mastering Bitcoin Chapter 4 - Keys and Addresses. We mainly go over Elliptic Curve Cryptography and the how and why it is used to generate Bitcoin keys and address. We give full credit to Andreas Antonopoulos for his excellent book Mastering Bitcoin. Many of the graphs and pictures used were from his book. Buy it here: https://www.amazon.com/Mastering-Bitcoin-Programming-Open-Blockchain/dp/1491954388 Also, we want to give credit to the other websites and videos we pulled examples and pictures from. Please check out these videos to learn more about ECC and Bitcoin. Like and subscribe to their channels too! https://blog.cloudflare.com/a-relatively-easy-to-understand-primer-on-elliptic-curve-cryptography/ - A (Relatively Easy To Understand) Primer on Elliptic Curve Cryptography https://www.youtube.com/watch?v=S9JGmA5_unY - How secure is 256 bit security? https://www.youtube.com/watch?v=ZloHVKk7DHk - Amazing Math of Private Keys https://youtu.be/5wDvlq-MrLg - A look into Elliptic Curve Cryptography (ECC) https://youtu.be/yDXiDOJgxmg - Elliptic Curve Cryptography & Diffie-Hellman https://youtu.be/yBr3Q6xiTw4 - Elliptic Curve Cryptography for those who are afraid of maths https://youtu.be/JszfLU4ysEM - Elliptic Curve Cryptography, the Foundation of Bitcoin Thanks for watching! TIPS BTC: 34T8P89oMK1Nm7eGrSWmMWhLWvAbPdiBvT
Views: 1156 Breaking Down Bitcoin
Elliptic Curves - Computerphile
 
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Just what are elliptic curves and why use a graph shape in cryptography? Dr Mike Pound explains. Mike's myriad Diffie-Hellman videos: https://www.youtube.com/playlist?list=PLzH6n4zXuckpoaxDKOOV26yhgoY2S-xYg https://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: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 163087 Computerphile
Elliptic Curve Digital Signature Algorithm ECDSA | Part 10 Cryptography Crashcourse
 
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Crashcourse Playlist: https://www.youtube.com/playlist?list=PLjwO-iVuY1v1kxWtOsqKEuXDB4ijXSHIk Book: Understanding Cryptography https://www.amazon.com/Understanding-Cryptography-Textbook-Students-Practitioners/dp/3642041000/ref=as_li_ss_tl?ie=UTF8&qid=1541146284&sr=8-1&keywords=Understanding+Cryptography:+A+Textbook+for+Students+and+Practitioners&linkCode=sl1&tag=julianhosp-20&linkId=8e14aad9056003d3eefcacb57c2e0b73&language=en_US ---------- New to cryptocurrencies? You might want to read this book first! http://cryptofit.community/cryptobook If you liked the video, subscribe to my channel, give a "thumbs up" and share this video to make the world together #cryptofit :) ► Subscribe: https://www.youtube.com/channel/UCseN... ► Cryptocurrency Exchange: https://www.binance.com/?ref=11272739 ► Hardware Wallet: http://www.julianhosp.com/hardwallet ► Ruben's Trinkgeld Adressen: Bitcoin: 3MNWaot64Fr1gRGxv4YzHCKAcoYTLXKxbc Litecoin: MTaGwg5EhKooonoVjDktroiLqQF6Rvn8uE --------------- ► Completely NEW? What is Blockchain, Bitcoin and Co? Get this book from me: https://www.amazon.com/Cryptocurrenci... ► Join our Facebook group: https://www.facebook.com/groups/crypt... ► iTunes Podcast: https://itunes.apple.com/sg/podcast/t... ► My website: http://www.julianhosp.com ---------------- My name is Dr. Julian Hosp or just Julian. My videos are about Bitcoin, Ethereum, Blockchain and crypto currencies in general, to avoid scam, rip-off and fraud especially in mining. I'm talking about how you can invest wisely and do it rationally and simply. My ultimate goal is to make people all around the world #CRYPTOFIT. I.E fit for this new wave of decentralization and blockchain. Have fun! ► Follow me here and stay in touch: Facebook: www.facebook.com/julianhosp/ Twitter: https://twitter.com/julianhosp Instagram: https://www.instagram.com/julianhosp/ Linkedin: https://www.linkedin.com/julianhosp
Views: 951 Dr. Julian Hosp
ECDSA Public Key from R, S and Z values
 
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Using the R,S and Z values, you can generate a public key. If the public key matches the one used in the TX input, or creates the address used in the TX Input's previous output, then it can be considered a valid transaction that was signed using the private key of the found public key. pseudocode to get public key point, pubKey = (ecPoint(K) * (S/R)) - ecPoint(Z/R)) URLs shown in this video, Example TX : https://2coin.org/index.html?txid=9ec4bc49e828d924af1d1029cacf709431abbde46d59554b62bc270e3b29c4b1 Download Code : https://github.com/Sean-Bradley/ECDSA_secp256k1_JordonMatrix_nodejs
Views: 2463 seanwasere ytbe
Elliptic Curve Digital Signature Algorithm
 
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Video explaining the Elliptic Curve Digital Signature Algorithm in the article https://trustica.cz/2018/06/07/elliptic-curve-digital-signature-algorithm - using the elliptic curve in simple Weierstrass form y²=x³-2x+15 over GF(23). Once again, starring Alice and Bob. If you wanna see more, subscribe to our YouTube channel and follow us on Twitter https://twitter.com/trusticacz as well!
Views: 1646 Trustica
Elliptic Curve Cryptography Tutorial - Understanding ECC through the Diffie-Hellman Key Exchange
 
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Learn more advanced front-end and full-stack development at: https://www.fullstackacademy.com Elliptic Curve Cryptography (ECC) is a type of public key cryptography that relies on the math of both elliptic curves as well as number theory. This technique can be used to create smaller, faster, and more efficient cryptographic keys. In this Elliptic Curve Cryptography tutorial, we build off of the Diffie-Hellman encryption scheme and show how we can change the Diffie-Hellman procedure with elliptic curve equations. Watch this video to learn: - The basics of Elliptic Curve Cryptography - Why Elliptic Curve Cryptography is an important trend - A comparison between Elliptic Curve Cryptography and the Diffie-Hellman Key Exchange
Views: 21046 Fullstack Academy
The Cryptography Behind Bitcoin
 
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We recorded a presentation we gave to our class on the Cryptography Behind Bitcoin and shared it with you all!
Views: 20200 CSBreakdown
The Math Behind Elliptic Curves in Koblitz Curves
 
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Elliptic curve cryptography is the hottest topic in public key cryptography world. For example, bitcoin and blockchain is mainly based on elliptic curves. We can also do encryption / decryption, key exchange and digital signatures with elliptic curves. This video covers the proofs of addition laws for both point addition and doubling for Koblitz Curves introduced by Neal Koblitz. This curves mostly used in binary field studies. This is the preview video of Elliptic Curve Cryptography Masterclass online course. You can find the course content here: https://www.udemy.com/elliptic-curve-cryptography-masterclass/?couponCode=ECCMC-BLOG-201801 Documentation: https://sefiks.com/2016/03/13/the-math-behind-elliptic-curves-over-binary-field/
Introduction to Bitcoin with Yours Bitcoin, Lecture 5: ECDSA
 
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A course on how bitcoin works and how to program bitcoin stuff with the javascript bitcoin library Yours Bitcoin. Taught by Ryan X. Charles, Cofounder & CEO of Yours, and former cryptocurrency engineer of reddit. The fourth lecture covers ECDSA, or Elliptic Curve Digital Signature Algorithm, the digital signature algorithm used by bitcoin. https://github.com/yoursnetwork/yours-bitcoin https://github.com/yoursnetwork/yours-bitcoin-examples https://www.yours.network https://www.ryanxcharles.com/ https://twitter.com/ryanxcharles
Views: 1029 Yours
Elliptic Curve (ECC) with example - Cryptography lecture series
 
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In this lecture series, you will be learning about cryptography basic concepts and examples related to it. Elliptic Curve (ECC) with example (ECC) with example.
Views: 19792 Eezytutorials
Getting the ECDSA Z Value from a Bitcoin Single Input Transaction
 
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In this video I demonstrate getting the ECDSA Z value from a bitcoin transaction with only one input. I also show the R and S values. The ECDSA R, S and Z values are used throughout the many layers of bitcoin to validate a transaction, The Z value is also sometimes referred to as the signed message. Transactions that don't contain valid inputs can be safely ignored, and the Z value is one of the properties that is used to check validity. This video shows me dissecting a very basic transaction with only 1 input and 1 output. The urls I show in this video are https://2coin.org/index.html?txid=bf474b96908ba7769120b2e8f2bfcbd2deca80c99b576b4b63bf18fb69e3d242 https://en.bitcoin.it/wiki/Protocol_documentation#tx https://2coin.org/doublesha256.html
Views: 3418 seanwasere ytbe
Lecture 17: Elliptic Curve Cryptography (ECC) by Christof Paar
 
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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
Introduction to Bitcoin with Yours Bitcoin, Lecture 3: Elliptic Curves
 
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A course on how bitcoin works and how to program bitcoin stuff with the javascript bitcoin library Yours Bitcoin. Taught by Ryan X. Charles, Cofounder & CEO of Yours, and former cryptocurrency engineer of reddit. The third lecture covers elliptic curves and in particular secp256k1, the curve used by bitcoin. This curve is used for public keys and ECDSA, the digital signature algorithm of bitcoin. https://github.com/yoursnetwork/yours-bitcoin https://github.com/yoursnetwork/yours-bitcoin-examples https://www.yours.network https://www.ryanxcharles.com/ https://twitter.com/ryanxcharles
Views: 769 Yours
DE: Elliptic Curve Digital Signature Algorithm ECDSA | Teil 10 Kryptographie Crashkurs
 
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Crashkurs Playlist: https://www.youtube.com/playlist?list=PLjwO-iVuY1v173y1kOBWF5vHKtI0tIsws Lehrbuch: Kryptographie verständlich: Ein Lehrbuch für Studierende und Anwender: https://www.amazon.de/Kryptografie-verständlich-Lehrbuch-Studierende-eXamen-press-ebook/dp/B01M10TWQY/ref=as_li_ss_tl?ie=UTF8&qid=1541146225&sr=8-2&keywords=paar+cryptography&linkCode=sl1&tag=julianhosp-21&linkId=c64f90611a652bf9c5595e9fea0bdcb7&language=en_GB ------------ Hier mein neuestes Buch "Blockchain 2.0 - mehr als nur Bitcoin" - die 100 innovativsten dezentralen Anwendungen abgesehen von Kryptowährungen: https://amzn.to/2wOVICV Wenn dir das Video gefallen hat, abonniere meinen Kanal, gib einen "Daumen hoch" und teile dieses Video um gemeinsam AT, DE und CH #cryptofit machen :) ► Abonnieren: https://www.youtube.com/subscription_center?add_user=julianhosp ► Kryptowährungen handeln: https://www.binance.com/?ref=11272739 ► Hardware Wallet kaufen: http://www.julianhosp.com/hardwallet --------------- ► Komplett NEU? Was ist Blockchain, Bitcoin und Co? Hol dir dieses Buch von mir: https://amzn.to/2kdgipU ► Sei bei unserer Facebook Gruppe dabei: https://www.facebook.com/groups/kryptoganzeinfach/ ► Die Kryptoshow (Podcast): http://kryptoshow.libsyn.com ► Meine Webseite: http://www.julianhosp.com ► Hier ist ein VIP Webinar mit Detailschritten und meinem privaten Account: https://www.digistore24.com/product/122531 ---------------- Mein Name ist Dr. Julian Hosp oder einfach nur Julian. In meinen Videos geht es um Bitcoin, Ethereum, Blockchain und Kryptowährungen generell, um Scam, Abzocke und Betrug besonders im Mining keinen Platz zu geben. Ich spreche darüber, wie du schlau investieren kannst und das Ganze rational und simpel angehst. Viel Spaß! ► Folge mir hier und bleibe in Kontakt: Facebook: https://www.facebook.com/julianhosp/ Twitter: https://twitter.com/julianhosp Instagram: https://www.instagram.com/julianhosp/ #Julianhosp
Views: 4605 Dr. Julian Hosp
The Eleventh HOPE (2016): "Stealing Bitcoin with Math"
 
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Saturday, July 23, 2016: 8:00 pm (Lamarr): Bitcoin is the best thing that ever happened to bored applied cryptographers: it’s a public database of keys and signatures made by quickly developed software that, when broken, drops money as if it was loot. This talk will look at mistakes old and new that enabled attacks: from ECDSA repeated nonces to using Math.random to make keys, from double spending and transaction malleability to crappy brainwallets. The bad news is that most vulnerable wallets were emptied a long time ago. The good news is that we get to look at how (and how fast) “cryptocriminals” operate in the process. In any case, new tools that implement some of the attacks will be demoed and released. No need to be a Bitcoin or crypto wizard - everything you need in order to understand what those poor victims didn’t will be explained. Filippo Valsorda, Ryan Castellucci
Views: 17170 Channel2600
Elliptic Curve Cryptography(ECC) - GATE Computer Science
 
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The complete YouTube playlist can be viewed here: https://goo.gl/mjyDev This lesson explains the concept of the Elliptic Curve Cryptography(ECC), under the course, "Cryptography and Network Security for GATE Computer Science Engineering". The lesson explains the questions on the following subtopics: Elliptic Curve Cryptography(ECC) ECC - Public key cryptosystem ECC - Key Exchange ECC - Encryption and Decryption Elliptic curve Some important terminology and concepts are also illustrated, for the better understanding of the subject. For the entire course: https://goo.gl/aTMBNZ For more lessons by Ansha Pk: https://goo.gl/2DX9Wn Must watch for all the GATE/ESE/PSU Exams. Download the Unacademy Learning App from the Google Play Store here:- https://goo.gl/02OhYI Download the Unacademy Educator app from the Google Play Store here: https://goo.gl/H4LGHE Do Subscribe and be a part of the community for more such lessons here: https://goo.gl/UGFo7b Visit Our Facebook Group on GATE here: https://goo.gl/cPj5sb Elliptic Curve Cryptography(ECC) - GATE Computer Science - Unacademy
Bitcoin Tutorial #12 - Der SECP256K1-Standard für Schlüssel
 
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In diesem Tutorial behandeln wir den Schlüsselstandard von Bitcoin. ❤❤❤ Früherer Zugang zu Tutorials, Abstimmungen, Live-Events und Downloads ❤❤❤ ❤❤❤ https://www.patreon.com/user?u=5322110 ❤❤❤ ❤❤❤ Keinen Bock auf Patreon? ❤❤❤ ❤❤❤ https://www.paypal.me/TheMorpheus ❤❤❤ 🌍 Website 🌍 https://the-morpheus.de ¯\_(ツ)_/¯ Tritt der Community bei ¯\_(ツ)_/¯ ** https://discord.gg/BnYZ8XS ** ** https://www.reddit.com/r/TheMorpheusTuts/ ** ( ͡° ͜ʖ ͡°) Mehr News? Mehr Code? ℱ https://www.facebook.com/themorpheustutorials 🐦 https://twitter.com/TheMorpheusTuts 🐙 https://github.com/TheMorpheus407/Tutorials Du bestellst bei Amazon? Bestell über mich, kostet dich null und du hilfst mir »-(¯`·.·´¯)-» http://amzn.to/2slBSgH Videowünsche? 🎁 https://docs.google.com/spreadsheets/d/1YPv8fFJOMRyyhUggK8phrx01OoYXZEovwDLdU4D4nkk/edit#gid=0 Fragen? Feedback? Schreib mir! ✉ https://www.patreon.com/user?u=5322110 ✉ https://www.facebook.com/themorpheustutorials ✉ https://discord.gg/BnYZ8XS ✉ [email protected] oder schreib einfach ein Kommentar :)
Blockchain/Bitcoin for beginners 3: public/private keys, signatures... and first ever transaction
 
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Detailed overview of public/private key encryption and live demo of exactly how digital signatures work on Mac, combining public and private keys and hash functions. Welcome to episode 3 of my series on Blockchain/Bitcoin. I'm joined once again by my girlfriend Nadisha who is my classroom pupil... I build on the hash function concepts from the previous episode and explain the basic concepts public and private keys and how to use them to create digital signatures - a key part of the bitcoin infrastructure. We demonstrate in a Mac terminal how you can generate your own keys and encrypt and decrypt and sign your own resources - learning by doing always works. We touch on bitcoin addresses, what they represent and how they are created. Finally I go back for a refresh of the bitcoin blockchain browser and look at the first ever bitcoin transaction in the "Genesis Block" to show what a real bitcoin address looks like. Bitcoin Blockchain browser https://blockchain.info Online hash calculator - great way to practice and familiarise with hash functions - one of the most important building blocks of Blockchain/Bitcoin http://www.fileformat.info/tool/hash.htm Course to date (previous videos) 1. Blockchain introduction https://youtu.be/xwA2TkcAQgQ 2. Hashing, blockchain networks and look at blockchain browser https://youtu.be/oxwMnqFNq9M SAMPLE COMMANDS: You will need to use your own document - pick any document, obviously your hash values will be different to mine. Also I had to use (right arrow) - since comments do not allow "chevron" symbols # EXAMPLE 1: # generate public and private keys openssl genrsa -out mykey 2048; cp mykey privatekey; openssl rsa -in mykey -pubout -out publickey; rm mike #encrypt with public key echo “the cat sat on the mat” | openssl rsautl -encrypt -pubin -inkey publicly (right arrow) cipher.txt # show the garbage cat cipher.txt # decrypt with private key - The cat sat on the mat cat cipher.txt | openssl rsautl -decrypt -inkey privately # EXAMPLE 2: Sign Alice in wonderland #check the SHA256 hash of the document to send - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 # create a text file called signature which hashes the document and encrypts with private key shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 | openssl rsautl -inkey privatekey -sign (right arrow) signature # wrap the signature up with the public key, the document and the signature and send it … we just copy to another folder tar -cvf alice.tar signature alice-in-wonderland.txt publickey;mkdir -p inbox;cp alice.tar inbox;cd inbox;tar -xvf alice.tar # inspect the public key and verify with the sender that it belongs to the sender cat publickey #decrypt the signature with the received public key - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c openssl rsautl -inkey publickey -pubin -in signature # hash the received document - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 # if they are both the same then the document cannot have been changed since it was signed by the genuine owner of the # private key corresponding to the public key
Views: 19653 Matt Thomas
Details of Elliptic Curve Cryptography | Part 9 Cryptography Crashcourse
 
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Crashcourse Playlist: https://www.youtube.com/playlist?list=PLjwO-iVuY1v1kxWtOsqKEuXDB4ijXSHIk Book: Understanding Cryptography https://www.amazon.com/Understanding-Cryptography-Textbook-Students-Practitioners/dp/3642041000/ref=as_li_ss_tl?ie=UTF8&qid=1541146284&sr=8-1&keywords=Understanding+Cryptography:+A+Textbook+for+Students+and+Practitioners&linkCode=sl1&tag=julianhosp-20&linkId=8e14aad9056003d3eefcacb57c2e0b73&language=en_US ---------- New to cryptocurrencies? You might want to read this book first! http://cryptofit.community/cryptobook If you liked the video, subscribe to my channel, give a "thumbs up" and share this video to make the world together #cryptofit :) ► Subscribe: https://www.youtube.com/channel/UCseN... ► Cryptocurrency Exchange: https://www.binance.com/?ref=11272739 ► Hardware Wallet: http://www.julianhosp.com/hardwallet ► Ruben's Trinkgeld Adressen: Bitcoin: 3MNWaot64Fr1gRGxv4YzHCKAcoYTLXKxbc Litecoin: MTaGwg5EhKooonoVjDktroiLqQF6Rvn8uE --------------- ► Completely NEW? What is Blockchain, Bitcoin and Co? Get this book from me: https://www.amazon.com/Cryptocurrenci... ► Join our Facebook group: https://www.facebook.com/groups/crypt... ► iTunes Podcast: https://itunes.apple.com/sg/podcast/t... ► My website: http://www.julianhosp.com ---------------- My name is Dr. Julian Hosp or just Julian. My videos are about Bitcoin, Ethereum, Blockchain and crypto currencies in general, to avoid scam, rip-off and fraud especially in mining. I'm talking about how you can invest wisely and do it rationally and simply. My ultimate goal is to make people all around the world #CRYPTOFIT. I.E fit for this new wave of decentralization and blockchain. Have fun! ► Follow me here and stay in touch: Facebook: www.facebook.com/julianhosp/ Twitter: https://twitter.com/julianhosp Instagram: https://www.instagram.com/julianhosp/ Linkedin: https://www.linkedin.com/julianhosp
Views: 2260 Dr. Julian Hosp
Elliptic Curve Diffie Hellman (ECDH) with secp256k1
 
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http://asecuritysite.com/encryption/ecdh2
Views: 1560 Bill Buchanan OBE
Elliptic Curve Cryptography (ECC) Parameters and Types: secp256k1, Curve 25519, and NIST
 
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Elliptic Curves: https://asecuritysite.com/comms/plot05 Key gen: https://asecuritysite.com/encryption/ecc EC Types: https://asecuritysite.com/encryption/ecdh3
Views: 837 Bill Buchanan OBE
Dev++ 02-01-EN | Finite fields, Elliptic Curves, ECDSA, Schnorr - John Newbery | Cryptography
 
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One-hour overview discussing basic principles behind cryptographic signatures
Views: 276 Bitcoin Edge
Getting the ECDSA Z Value from a Bitcoin Multiple Input Transaction
 
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In this video I demonstrate getting the ECDSA Z value from a bitcoin transaction with 2 inputs. I also show the R and S values. The ECDSA R, S and Z values are used throughout the many layers of bitcoin to validate a transaction. The Z value is also sometimes referred to as the signed message. Transactions that don't contain valid inputs can be safely ignored and the Z value is one of the properties that is used during the transaction validation process. The urls I show in this video are https://2coin.org/index.html?txid=9ec4bc49e828d924af1d1029cacf709431abbde46d59554b62bc270e3b29c4b1 https://2coin.org/pubkeyToHash160.html https://2coin.org/doublesha256.html
Views: 1385 seanwasere ytbe
"Elliptic Curve Cryptography, the Foundation of Bitcoin" by Matt Whitlock - Bitcoin Summit
 
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http://bitcoin.org l On December 15, 2012, activist group Truth, Freedom, Prosperity hosted the East Coast Bitcoin Summit at Underground Arts in Philadelphia. The entire event was from 1pm - 5pm. We broke each talk down in this series of videos, which can be seen at http://www.youtube.com/playlist?list=PL-sagavSvMdMBK36FBIfnVupeJdt_lMi5 http://TruthFreedomProsperity.org
Views: 11144 Mike Salvi
Advanced Bitcoin Scripting -- Part 1: Transactions & Multisig
 
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This is the first part of a more technical talk where Andreas explores Bitcoin script, with examples from the 2nd edition of Mastering Bitcoin, focusing on the use of conditional statements, flow control, guard clauses and time locks. The examples will include advanced multi-signature scripts, hash time lock contracts and asymmetric revocable commitments. Then he answers questions about Bitcoin's quirky bugs, where Bitcoin differs from Ethereum at a scripting level, how SegWit works, how consensus rules change, and whether Bitcoin is more than just a currency. Watch Part 2 here: https://youtu.be/pQbeBduVQ4I This talk took place at the San Francisco Bitcoin Developer (@SFBitcoinDev) meetup on April 3rd, 2017: https://www.meetup.com/SF-Bitcoin-Devs/events/238773843/ Review materials on the topics presented: Chpt. 7: https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch07.asciidoc Chpt. 12: https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch12.asciidoc The fundamentals of Bitcoin script 2:17 Bitcoin's operators 5:00 Creating transactions (P2PKH - Pay to Public Key Hash) 6:30 Public Key CheckSigs, security by obfuscating public keys 7:42 Redeeming the script 9:05 The RIPEMD160 hash operation 12:05 OP_EQUALVERIFY, OP_CHECKSIG, & the elliptic curve digital signature algorithm (ECDSA) 14:05 Summary 18:30 Illustrating scripts: Equal, EqualVerify, CheckSig, CheckVerify, CheckMultisig, CheckLockTimeVerify 19:45 Guard clauses 23:02 Script-based timelocks 24:53 Flow control statements, interactive artificial intelligence 26:50 If, Else, EndIf 28:35 Unlocking scripts, what conditional flows do in Bitcoin 33:55 1-of-2 multi-signature script 35:44 1-of-2 multi-signature script with guard clause 38:28 2-of-3 multi-signature script 41:30 2-of-3 multi-signature script with timelock guard clause 43:20 BIP-113, how time is referenced in Bitcoin 44:42 Backup clause & other nuances in multi-signature schemes 46:58 Game theory, complexity from simplicity 52:36 2-of-3 multi-signature script, unlocking 53:45 RELATED: Bitcoin: Where the Laws of Mathematics Prevail - https://youtu.be/HaJ1hvon0E0 The rules of Bitcoin (part 1) - https://youtu.be/VnQu4uylfOs The rules of Bitcoin (part 2) - https://youtu.be/vtIp0GP4w1E Forkology: A Study of Forks for Newbies - https://youtu.be/rpeceXY1QBM Irreversibility and consumer protection - https://youtu.be/R107YWu5XzU Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and well-respected figures in bitcoin. Follow on Twitter: @aantonop https://twitter.com/aantonop Website: https://antonopoulos.com/ He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters. THE INTERNET OF MONEY, v1: https://www.amazon.co.uk/Internet-Money-collection-Andreas-Antonopoulos/dp/1537000454/ref=asap_bc?ie=UTF8 MASTERING BITCOIN: https://www.amazon.co.uk/Mastering-Bitcoin-Unlocking-Digital-Cryptocurrencies/dp/1449374042 [NEW] MASTERING BITCOIN, 2nd Edition: https://www.amazon.com/Mastering-Bitcoin-Programming-Open-Blockchain/dp/1491954388 Subscribe to the channel to learn more about Bitcoin & open blockchains! If you want early-access to talks and a chance to participate in a monthly LIVE Q&A with Andreas, become a patron: https://www.patreon.com/aantonop Music: "Unbounded" by Orfan (https://www.facebook.com/Orfan/) Outro Graphics: Phneep (http://www.phneep.com/) Outro Art: Rock Barcellos (http://www.rockincomics.com.br/)
Views: 30526 aantonop
Bitcoin 101- Elliptical Curve Explanation
 
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Like, comment, and subscribe!!! Arianna Zhao, Annie Zhu, Shirley Zhu, and Alicia Xia explain the basics of Bitcoin and elliptical curves. This was a UH Team Project 2018 2nd place winner. You can contact us through Arianna's email: [email protected] Follow Arianna on Instagram! instagram.com/zhaoarianna
Views: 72 arianna zhao
Elliptic Curve Cryptography Tutorial - An Introduction to Elliptic Curve Cryptography
 
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Learn more advanced front-end and full-stack development at: https://www.fullstackacademy.com Elliptic Curve Cryptography (ECC) is a type of public key cryptography that relies on the math of both elliptic curves as well as number theory. This technique can be used to create smaller, faster, and more efficient cryptographic keys. In this Elliptic Curve Cryptography tutorial, we introduce the mathematical structure behind this new algorithm. Watch this video to learn: - What Elliptic Curve Cryptography is - The advantages of Elliptic Curve Cryptography vs. old algorithms - An example of Elliptic Curve Cryptography
Views: 10502 Fullstack Academy
Bitcoin Q&A: Schnorr signatures and the privacy roadmap
 
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How important are privacy improvements to Bitcoin in the roadmap? How will second layers and atomic swaps help with this? When will Schnorr signatures / signature aggregation be added to Bitcoin? What are Taproot and Graftroot? Will it be done through a soft or hard fork? Should we keep transaction transparency instead of adding privacy features? Watch Pieter Wuille's presentation - https://youtu.be/YSUVRj8iznU Schnorr signature BIP - https://github.com/sipa/bips/blob/bip-schnorr/bip-schnorr.mediawiki CORRECTION / CLARIFICATION: At 3:47, I mention that Schnorr signatures had to overcome "patent encumbrances" and guessed that the patent expired somewhere around 2010. The precise expiration date of the U.S. Patent (No. 4,995,082) was February 2008. At 4:22, I say that ECDSA and EC-Schnorr are based on the difficulty of solving the discrete logarithm problem over a prime-order field. While this is true for the digital signature algorithm (DSA), ECDSA and Schnorr are based on the discrete log problem over an elliptic curve group. (h/t Daira Hopwood) These questions were part of the monthly live Patreon Q&A session in July and the Denver event as part of 'The Internet of Money Tour' at the Hilton Denver Inverness, which took place on July 28th and August 6th 2018 respectively. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: https://www.patreon.com/aantonop RELATED: Worse than Useless: Financial Surveillance - https://youtu.be/n4F-h4xuXMk Money as a System-of-Control - https://youtu.be/FyK4P7ZdOK8 The Stories We Tell About Money - https://youtu.be/ONvg9SbauMg Bitcoin: Privacy, Identity, Surveillance and Money - https://youtu.be/Vcvl5piGlYg ADISummit: Self-Sovereign Identity Panel - https://youtu.be/DZbyiJqKT8c How is fungibility tied to privacy? - https://youtu.be/VuI-8EwqIS8 Public keys versus addresses - https://youtu.be/8es3qQWkEiU Re-using addresses - https://youtu.be/4A3urPFkx8g Coin selection and privacy - https://youtu.be/3Ck683CQGAQ Airdrop coins and privacy implications - https://youtu.be/JHRnqJJ0rhc Wallet design and mass adoption - https://youtu.be/WbZX6BDZJHc How do I choose a wallet? - https://youtu.be/tN6b62sEpsY Using paper wallets - https://youtu.be/cKehFazo8Pw Exchanges, identity, and surveillance - https://youtu.be/TVFy8xXfxAA The price of losing privacy - https://youtu.be/2G8IgiLbT_4 Layered scaling and privacy - https://youtu.be/4w-bjUhpf_Q Lightning and onion routing - https://youtu.be/D-nKuInDq6g What is the roadmap? - https://youtu.be/5Eoj_sKyC90 SegWit and fork research - https://youtu.be/OorLoi01KEE MimbleWimble and Schnorr signatures - https://youtu.be/qloq75ekxv0 Block capacity and embedded data - https://youtu.be/JXt0v54nojI Mixing services - https://youtu.be/rKoMvOH4zoY Borderless money - https://youtu.be/EZh1-ZqffOw Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in bitcoin. Follow on Twitter: @aantonop https://twitter.com/aantonop Website: https://antonopoulos.com/ He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters. THE INTERNET OF MONEY, v1: https://www.amazon.co.uk/Internet-Money-collection-Andreas-Antonopoulos/dp/1537000454/ref=asap_bc?ie=UTF8 [NEW] THE INTERNET OF MONEY, v2: https://www.amazon.com/Internet-Money-Andreas-M-Antonopoulos/dp/194791006X/ref=asap_bc?ie=UTF8 MASTERING BITCOIN: https://www.amazon.co.uk/Mastering-Bitcoin-Unlocking-Digital-Cryptocurrencies/dp/1449374042 [NEW] MASTERING BITCOIN, 2nd Edition: https://www.amazon.com/Mastering-Bitcoin-Programming-Open-Blockchain/dp/1491954388 Translations of MASTERING BITCOIN: https://bitcoinbook.info/translations-of-mastering-bitcoin/ Subscribe to the channel to learn more about Bitcoin & open blockchains! Music: "Unbounded" by Orfan (https://www.facebook.com/Orfan/) Outro Graphics: Phneep (http://www.phneep.com/) Outro Art: Rock Barcellos (http://www.rockincomics.com.br/)
Views: 11248 aantonop
Scaling Bitcoin 2018 "Kaizen" Day 1 Part 4
 
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Scriptless Scripts and Multi-party Channels Multi-party Channels in the UTXO Model: Challenges and Opportunities PRESENTER(s):Olaoluwa Osuntokun (Lightning Labs) Multi-Hop Locks for Secure, Privacy-Preserving and Interoperable Payment-Channel Networks PRESENTER(s):Giulio Malavolta (Friedrich-Alexander-University Erlangen-Nuernberg), Pedro Moreno-Sanchez (Purdue University), Clara Schneidewind (Vienna University of Technology), Aniket Kate (Purdue University) and Matteo Maffei (Vienna University of Technology) Instantiating [Scriptless] 2P-ECDSA: Fungible 2-of-2 MultiSigs for Today's Bitcoin PRESENTER(s):Conner Fromknecht (Lightning Labs)
Views: 1096 Scaling Bitcoin
A Look Into Elliptic Curve Cryptography (ECC)
 
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A talk about the basics of Elliptic Curve Cryptography (ECC), its use and application today, strengths and weaknesses.
Views: 23435 mrdoctorprofessorsir
EB50 – BTC2B Conference: Nicolas Courtois & potential security vulnerabilities in Bitcoin ECDSA
 
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Support the show, consider donating: 39rFJA7bHRREpgghnZKzKbYrQEPVX9P3Fj (http://bit.ly/1wl0Ivn) Nicolas Courtois is a cryptographer and senior lecturer at University College London. He has been studying cryptocurrencies for some time and has written a number of papers on bitcoin. His talk is titled "Cryptographic Security of ECDSA in bitcoin" in which he exposes the security vulnerabilities in the specific variation of the Elliptic Curve digital Signature Algorithm used in bitcoin. Links mentioned in this episode: - Slides for this presentation: http://www.nicolascourtois.com/bitcoin/paycoin_ECDSA_survey_Brussels_2014_3abcd.pdf - Nicolas Courtois’s Wikipedia Page: http://en.wikipedia.org/wiki/Nicolas_Courtois - Personal blog: http://blog.bettercrypto.com/ - On The Longest Chain Rule and Programmed Self-Destruction of Crypto Currencies paper: http://arxiv.org/abs/1405.0534 - Nicolas’s Bitcoin Publications: http://blog.bettercrypto.com/?page_id=63 Show notes: http://epicenterbitcoin.com/podcast/050 YouTube: http://youtu.be/-nHKhN4XpMw SoundCloud: http://soundcloud.com/epicenterbitcoin/eb-050 Epicenter Bitcoin is hosted by Brian Fabian Crain & Sébastien Couture. - Visit our website: http://epicenterbitcoin.com - Subscribe to our newsletter: http://epicenterbitcoin.com/newsletter - Twitter: http://twitter.com/epicenterbtc
Views: 305 Epicenter Podcast