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What is a Digital Signature?
 
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This channel introduces the "e-Estonia" - a term commonly used to describe Estonia's emergence as one of the most advanced e-societies in the world. You can learn more about Estonian ICT and technology by watching the videos, visiting our homepage http://e-estonia.com or follow us on FB e-Estonia .You can also book a visit and live demo at Estonian ICT Demo Center in Tallinn and establish business contacts with Estonian ICT companies.
Views: 194888 e-estonia
Rsa Blind Signatures Solution - 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: 1437 Udacity
MicroNugget: Verifying Digital Signatures
 
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Not a subscriber? Start your free week. http://cbt.gg/26fFMEs CBT Nuggets trainer Tim Warner explains how to use digital signatures to look for suspicious code.
Views: 1378 CBT Nuggets
Cryptography Basics for Embedded Developers by Eystein Stenberg
 
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Cryptography Basics for Embedded Developers - Eystein Stenberg, Mender Many vulnerabilities and breaches happen due to incorrect use of cryptographic mechanisms like encryption. This talk will cover the basic mechanisms of cryptography, like encryption, signatures, and key storage, looking at how these are used to create important security properties like authentication, confidentiality and integrity. Performance is particularly important for embedded development and we will cover which cryptographic operations are computationally expensive and why. We will highlight implementations of cryptographic mechanisms that help meet the performance needs of embedded devices, including Elliptic Curve Cryptography. We will wrap up with common pitfalls, libraries and tools relevant for secure use of cryptography for embedded devices. Eystein Stenberg has over 7 years of experience in security and systems management as a developer, a support engineer, a technical account manager, and now as a product manager. He has been in the front line of some of the largest production environments in various roles and has in-depth knowledge of the challenges in systems security in a real-world context. His holds a Master’s degree in cryptography and his writing credits include “Distributing a Private Key Generator in Ad Hoc Networks."
Digital Signatures in Action - Cyber Law
 
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Course Link: https://www.apnacourse.com/course/cyberlaw Description: How to affix a Digital Signatures ? You can Digitally sign a mail just by clicking on icon "sign"..if you already have Digital Signature installed.
Views: 331 ApnaCourse.com
Bitcoin Q&A: Cryptographic primitives
 
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How are cryptographic primitives employed in Bitcoin? What are hashes and digital signatures? How does elliptic curve cryptography work? See details in Chapters 4 and 6 of 'Mastering Bitcoin': https://github.com/bitcoinbook/bitcoinbook/blob/f8b883dcd4e3d1b9adf40fed59b7e898fbd9241f/ch04.asciidoc https://github.com/bitcoinbook/bitcoinbook/blob/f8b883dcd4e3d1b9adf40fed59b7e898fbd9241f/ch06.asciidoc#digital_sigs These questions are from the MOOC 9.3 session which took place on March 2nd 2018. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. 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: Introduction to Bitcoin - https://youtu.be/l1si5ZWLgy0 Bitcoin: Where the Laws of Mathematics Prevail - https://youtu.be/HaJ1hvon0E0 Advanced Bitcoin Scripting: Transactions and Multisig - https://youtu.be/8FeAXjkmDcQ The war on cash and crypto - https://youtu.be/BAlRKfvBnvw MimbleWimble and Schnorr signatures - https://youtu.be/qloq75ekxv0 Mixing services - https://youtu.be/rKoMvOH4zoY Atomic swaps - https://youtu.be/fNFBA2UmUmg Directed acyclic graphs (DAGs) and IOTA - https://youtu.be/lfgMnbb5JeM Decentralised exchanges with fiat - https://youtu.be/3Url8tbQEkA Decentralised exchanges and counterparty risk - https://youtu.be/hi_jaw0dT9M The Lightning Network - https://www.youtube.com/playlist?list=PLPQwGV1aLnTurL4wU_y3jOhBi9rrpsYyi Secure, tiered storage system - https://youtu.be/uYIVuZgN95M Using paper wallets - https://youtu.be/cKehFazo8Pw Re-using addresses - https://youtu.be/4A3urPFkx8g How to get people to care about security - https://youtu.be/Ji1lS9NMz1E Migrating to post-quantum cryptography - https://youtu.be/dkXKpMku5QY 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 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: 6649 aantonop
Bob Blakley, Digital Signatures (August 22, 2003)
 
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From the CISR video library (http://www.cisr.us) Dr. Bob Blakley, Texas A&M University Digital Signatures August 22, 2003 at the Naval Postgraduate School (http://www.nps.edu) ABSTRACT * The history of digital signatures * The remarkable and hitherto largely unsuspected adaptability and malleability of the original Diffie/Hellman formulation of digital signatures in terms of public key cryptosystems * The severest of the acceptance problems they have encountered * Areas of a proposed solution that addresses several of the problems About Dr. G. R. Blakley Dr. G. R. Blakley is Professor, and formerly Head, of the Texas A&M University Mathematics Department. He holds a Ph. D. degree in mathematics from the University of Maryland, as well as a D. Univ. degree from the Queensland University of Technology for his work in cryptology. He did postdoctoral years at Cornell and Harvard, and has held faculty appointments at the University of Illinois, the State University of New York at Buffalo, and Wright State University. His cryptologic research areas include secret sharing, public key cryptography, periodicities of finite state machines, fingerprinting and watermarking, cryptosystems obeying Shannon-style design criteria, high-speed encryption and decryption, and general theory of codes.
Views: 352 securitylectures
What is PUBLIC-KEY CRYPTOGRAPHY? What does PUBLIC-KEY CRYPTOGRAPHY mean?
 
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What is PUBLIC-KEY CRYPTOGRAPHY? What does PUBLIC-KEY CRYPTOGRAPHY mean? PUBLIC-KEY CRYPTOGRAPHY meaning - PUBLIC-KEY CRYPTOGRAPHY definition - PUBLIC-KEY CRYPTOGRAPHY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Public-key cryptography, or asymmetric cryptography, is any cryptographic system that uses pairs of keys: public keys that may be disseminated widely paired with private keys which are known only to the owner. There are two functions that can be achieved: using a public key to authenticate that a message originated with a holder of the paired private key; or encrypting a message with a public key to ensure that only the holder of the paired private key can decrypt it. In a public-key encryption system, any person can encrypt a message using the public key of the receiver, but such a message can be decrypted only with the receiver's private key. For this to work it must be computationally easy for a user to generate a public and private key-pair to be used for encryption and decryption. The strength of a public-key cryptography system relies on the degree of difficulty (computational impracticality) for a properly generated private key to be determined from its corresponding public key. Security then depends only on keeping the private key private, and the public key may be published without compromising security. Public-key cryptography systems often rely on cryptographic algorithms based on mathematical problems that currently admit no efficient solution—particularly those inherent in certain integer factorization, discrete logarithm, and elliptic curve relationships. Public key algorithms, unlike symmetric key algorithms, do not require a secure channel for the initial exchange of one (or more) secret keys between the parties. Because of the computational complexity of asymmetric encryption, it is usually used only for small blocks of data, typically the transfer of a symmetric encryption key (e.g. a session key). This symmetric key is then used to encrypt the rest of the potentially long message sequence. The symmetric encryption/decryption is based on simpler algorithms and is much faster. Message authentication involves hashing the message to produce a "digest," and encrypting the digest with the private key to produce a digital signature. Thereafter anyone can verify this signature by (1) computing the hash of the message, (2) decrypting the signature with the signer's public key, and (3) comparing the computed digest with the decrypted digest. Equality between the digests confirms the message is unmodified since it was signed, and that the signer, and no one else, intentionally performed the signature operation — presuming the signer's private key has remained secret. The security of such procedure depends on a hash algorithm of such quality that it is computationally impossible to alter or find a substitute message that produces the same digest - but studies have shown that even with the MD5 and SHA-1 algorithms, producing an altered or substitute message is not impossible. The current hashing standard for encryption is SHA-2. The message itself can also be used in place of the digest. Public-key algorithms are fundamental security ingredients in cryptosystems, applications and protocols. They underpin various Internet standards, such as Transport Layer Security (TLS), S/MIME, PGP, and GPG. Some public key algorithms provide key distribution and secrecy (e.g., Diffie–Hellman key exchange), some provide digital signatures (e.g., Digital Signature Algorithm), and some provide both (e.g., RSA). Public-key cryptography finds application in, among others, the information technology security discipline, information security. Information security (IS) is concerned with all aspects of protecting electronic information assets against security threats. Public-key cryptography is used as a method of assuring the confidentiality, authenticity and non-repudiability of electronic communications and data storage.
Views: 678 The Audiopedia
what is Digital Signatures | introduction digital signature | explain Digital Signatures 2017
 
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a digital signature function for electronic documents like a handwritten signature does for printed documents. A digital signature actually provides a greater degree of security than a handwritten signature. Furthermore, secure digital signature cannot be repudiated; the signer of a documents cannot later disown it by claiming the signature was forged.
Views: 21 I.T
Lecture 7: Introduction to Galois Fields for the AES by Christof Paar
 
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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
JMU CS 101: Security Part 2
 
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Sniffing & spoofing, cryptography, digital signatures
Views: 436 Chris Mayfield
Overview of Digital Forensics
 
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When a cyber incident occurs, IT’s best practice is to respond with a set of predetermined actions. Applying digital forensics to aid in the recovery and investigation of material on digital media and networks is one of these actions. Digital forensics is defined as the “process of identifying, preserving, analyzing and presenting digital evidence in a manner that is legally acceptable in any legal proceedings (i.e., a court of law).” To download the accompanying whitepaper, click here: http://bit.ly/2rerSCZ. For a suite of cyber security learning solutions for individuals and enterprises, check out Cybersecurity Nexus (CSX) from ISACA: http://bit.ly/2sxqAXx
Views: 12665 ISACA HQ
Looking At A Certificate - 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: 577 Udacity
Jintai Ding - ZHFE, a New Multivariate Public Key Encryption Scheme
 
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Jintai Ding of the University of Cincinnati and the Chinese Academy of Sciences presented a talk titled: ZHFE, a new multivariate public key encryption scheme at the 2014 PQCrypto conference in October, 2014. Abstract: In this paper we propose a new multivariate public key encryption scheme named ZHFE. The public key is constructed using as core map two high rank HFE polynomials. The inversion of the public key is performed using a low degree polynomial of Hamming weight three. This low degree polynomial is obtained from the two high rank HFE polynomials, by means of a special reduction method that uses HFE polynomials. We show that ZHFE is relatively efficient and the it is secure against the main attacks that have threatened the security of HFE. We also propose parameters for a practical implementation of ZHFE. PQCrypto 2014 Book: http://www.springer.com/computer/security+and+cryptology/book/978-3-319-11658-7 Workshop: https://pqcrypto2014.uwaterloo.ca/ Find out more about IQC! Website - https://uwaterloo.ca/institute-for-qu... Facebook - https://www.facebook.com/QuantumIQC Twitter - https://twitter.com/QuantumIQC
Principles of Network Security and Cryptography
 
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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 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] Download my FREE Network Security Android App - https://play.google.com/store/apps/details?id=com.intelisenze.networksecuritytutorials 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: 18749 Simple Snippets
2012-02-29 CERIAS - Cryptographic protocols in the era of cloud computing
 
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Recorded: 02/29/2012 CERIAS Security Seminar at Purdue University Cryptographic protocols in the era of cloud computing Nishanth Chandran, Microsoft Research With the advent of cloud computing, our view of cryptographic protocols has changed dramatically. In this talk, I will give an overview of some of the newer challenges that we face in cloud cryptography and outline some of the techniques used to solve these problems. In particular, a few questions that I will address are:1) How can we store sensitive data in the cloud, in an encrypted manner, and yet allow controlled access to certain portions of this data?2) How can we ensure reliability of data across cloud servers that may be connected by only a low-degree communication network, even when some of the servers may become corrupted?3) How can users authenticate themselves to the cloud in a user-friendly way?This talk will assume no prior knowledge of cryptography and is based on works that appear at TCC 2012, ICALP 2010 and STOC 2010. Nishanth Chandran is a post-doctoral researcher in the Cryptography group at Microsoft Research, Redmond. His research interests are in the area of cryptography, security and distributed algorithms. Nishanth has published several papers in top theory and cryptography conferences such as STOC, FOCS, Crypto, Eurocrypt, TCC and so on. He received his PhD in Computer Science from UCLA in 2011, his Masters in Computer Science from UCLA in 2007, and his Bachelors in Computer Science and Engineering from Anna University, India in 2005. Nishanth received the Dissertation Year Fellowship from UCLA and the Chorafas International Award for exceptional achievements in research in 2010. He is also a professional Indian classical violinist. (Visit: www.cerias.purude.edu)
Views: 1246 ceriaspurdue
Bitcoin - Cryptographic hash function
 
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What cryptographic hash functions are and what properties are desired of them. More free lessons at: http://www.khanacademy.org/video?v=0WiTaBI82Mc Video by Zulfikar Ramzan. Zulfikar Ramzan is a world-leading expert in computer security and cryptography and is currently the Chief Scientist at Sourcefire. He received his Ph.D. in computer science from MIT.
Views: 213309 Khan Academy
Vladimir Soukharev - Isogeny-Based Quantum Resistant Undeniable Signatures
 
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Vladimir Soukharev of the University of Waterloo presented a talk titled: Isogeny-based quantum-resistant undeniable signatures at the 2014 PQCrypto conference in October, 2014. Abstract: We propose an undeniable signature scheme based on eliptic curve isogenies, and prove its security under certain reasonable number-theoretic computational assumptions for which no efficient quantum algorithms are known. Our proposal represents only the second known quantum-resistant undeniable signature scheme, and the first such scheme secure under a number-theoretic complexity assumption. PQCrypto 2014 Book: http://www.springer.com/computer/security+and+cryptology/book/978-3-319-11658-7 Workshop: https://pqcrypto2014.uwaterloo.ca/ Find out more about IQC! Website - https://uwaterloo.ca/institute-for-qu... Facebook - https://www.facebook.com/QuantumIQC Twitter - https://twitter.com/QuantumIQC
Bitcoin Q&A: Multi-signature and distributed storage
 
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What happens when wallets (personal or at an exchange) are hacked? What is "sweeping" with regards to private keys? After a hack, is it possible to track the stolen bitcoin and identify the hacker? How do you keep bitcoin safe in a group / corporate environment? Is it possible to create a multi-signature setup with Trezor and Electrum? Could passphrases be brute-forced? What is happening with browser extension deprecation? You will have to evaluate which tools are the best based on the amount of cryptocurrency you own, your circumstances, and your threat model. "'I Forgot My PIN': An Epic Tale of Losing $30,000 in Bitcoin" - https://www.wired.com/story/i-forgot-my-pin-an-epic-tale-of-losing-dollar30000-in-bitcoin/ These questions are from the MOOC 9.3 and 9.4 sessions, as well as the (rescheduled) April Patreon Q&A session, which took place on March 2nd, March 9th, and May 5th 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. 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: Software distribution security - https://youtu.be/_V0vqy046YM Protocol development security - https://youtu.be/4fsL5XWsTJ4 Geopolitics and state-sponsored attacks - https://youtu.be/htxPRTJLK-k How to get people to care about security - https://youtu.be/Ji1lS9NMz1E Exchanges, identity, and surveillance - https://youtu.be/TVFy8xXfxAA What is the roadmap? - https://youtu.be/5Eoj_sKyC90 Why developers are leaving banks - https://youtu.be/GqOZ4IAQ-xQ Honest nodes and consensus - https://youtu.be/KAhY2ymI-tg Why running a node is important - https://youtu.be/oX0Yrv-6jVs Lessons from the hard fork - https://youtu.be/hnAWAVNnGCw Cryptographic primitives - https://youtu.be/RIckQ6RBt5E Nonces, mining, and quantum computing - https://youtu.be/d4xXJh677J0 Public keys vs. addresses - https://youtu.be/8es3qQWkEiU Re-using addresses - https://youtu.be/4A3urPFkx8g Using paper wallets - https://youtu.be/cKehFazo8Pw Wallet design and mass adoption - https://youtu.be/WbZX6BDZJHc Secure, tiered storage system - https://youtu.be/uYIVuZgN95M The Courage to Innovate Without Permission - https://youtu.be/ywq6NBETUJ8 What is Consensus: Rules Without Rulers - https://youtu.be/2tqo7PX5Pyc Decentralized Truth - https://youtu.be/XCVaabu3J04 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: 5804 aantonop
Introduction to Cryptography: Part 3 - Identity
 
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Part 1 is here: https://www.youtube.com/watch?v=_9YuARcSTVY Part 2 is here: https://www.youtube.com/watch?v=HKQLBUAGbeQ Part 3 is here: http://youtu.be/QuKxDLrL0u4 More details at: http://asecuritysite.com
Views: 2459 Bill Buchanan OBE
Zerocash: Addressing Bitcoin's Privacy Problem
 
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A Google TechTalk, 8/28/17, presented by Alessandro Chiesa Abstract: In Bitcoin, a payment's details are broadcast in the clear, so that anyone can verify its validity. Unfortunately, this violates user privacy and sacrifices coin fungibility. I will describe the Zerocash protocol, which uses zero knowledge proofs to achieve privacy-preserving payments in a Bitcoin-like system. This protocol was recently deployed in the wild, as part of the cryptocurrency Zcash. About the Speaker: Alessandro Chiesa is an assistant professor in the Department of Electrical Engineering and Computer Science at UC Berkeley. His research spans the areas of complexity theory, cryptography, and security, and focuses on the theoretical foundations and practical implementations of cryptographic proof systems such as zero knowledge proofs. He is a co-inventor of Zerocash and co-founder of Zcash. He is an author of libsnark, the leading open-source library for succinct zero knowledge proofs. He has received a Ph.D. in computer science from MIT in 2014, and B.S. degrees in computer science and in mathematics from MIT in 2009.
Views: 2814 GoogleTechTalks
Cryptography: "My lab is in my head"
 
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Have you ever thought about what people would learn about you if they could see your history on Google? Meet Claudio Orlandi, a researcher of cryptography at the Department of Computer Science at Aarhus University.
Views: 1629 Aarhus Universitet
Cybersecurity Frameworks | NIST Cybersecurity Framework | Cybersecurity Certification | Edureka
 
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** CyberSecurity Certification Training : https://www.edureka.co/cybersecurity-certification-training ** This Edureka video on "Cybersecurity Frameworks" will help you understand why and how the organizations are using cybersecurity framework to Identify, Protect and Recover from cyber attacks. Cybersecurity Training Playlist: https://bit.ly/2NqcTQV Subscribe to our channel to get video updates. Hit the subscribe button above. ------------------------------------------- About Edureka Cyber Security Training Cybersecurity is the combination of processes, practices, and technologies designed to protect networks, computers, programs, data and information from attack, damage or unauthorized access. Edureka’s Cybersecurity Certification Course will help you in learning about the basic concepts of Cybersecurity along with the methodologies that must be practiced ensuring information security of an organization. Starting from the Ground level Security Essentials, this course will lead you through Cryptography, Computer Networks & Security, Application Security, Data & Endpoint Security, idAM (Identity & Access Management), Cloud Security, Cyber-Attacks and various security practices for businesses. ------------------------------------------------ Why Learn Cyber Security? Cybersecurity is the gathering of advances that procedures and practices expected to ensure systems, PCs, projects and information from assault, harm or unapproved get to. In a processing setting, security incorporates both cybersecurity and physical security, it is imperative since cyberattackers can without much of a stretch take and obliterate the profoundly grouped data of governments, defense offices and banks for which the results are huge so it is essential to have an appropriate innovation which an avoid digital wrongdoings. --------------------------------------------------- Objectives of Edureka Cyber Security Course This course is designed to cover a holistic & a wide variety of foundational topics of the cybersecurity domain which will be helpful to lead freshers as well as IT professional having 1 to 2 years of experience, into the next level of choice such as ethical hacking/ audit & compliance / GRC/ Security Architecture and so on This course focuses mainly on the basics concepts of Cyber Security In this course, we are going to deal with Ground level security essentials cryptography, computer networks & security, application security, data & endpoint security, idAM (identity & access management), cloud security, cyber-attacks and various security practices for businesses This course will be your first step towards learning Cyber Security -------------------------------------- Who Should go for this Training? Anyone having the zeal to learn innovative technologies can take up this course. Especially, students and professionals aspiring to make a career in the Cybersecurity technology. However, Cybersecurity Certification Course is best suited for the below mentioned profiles:- Networking Professionals Linux Administrators ----------------------------------------------- Please write back to us at [email protected] or Call us at US: +18336900808 (Toll Free) or India: +918861301699 Facebook: https://www.facebook.com/edurekaIN/ Twitter: https://twitter.com/edurekain LinkedIn: https://www.linkedin.com/company/edureka
Views: 2037 edureka!
Cyber Law  Need & Importance
 
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Aditya Kumar Shukla, Asst Prof
Views: 58738 vmouonline
22. Cryptography: Encryption
 
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MIT 6.046J Design and Analysis of Algorithms, Spring 2015 View the complete course: http://ocw.mit.edu/6-046JS15 Instructor: Srinivas Devadas In this lecture, Professor Devadas continues with cryptography, introducing encryption methods. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 14133 MIT OpenCourseWare
Bitcoin Q&A: Hardware wallets and attack surface
 
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Can you give a basic introduction to hardware wallets? Why are bitcoin "wallets" more like keychains? How do we balance ease of use and security? What are possible ways to attack a hardware wallet? Why should you broadcast transactions through your own full node? See the documentation and support pages of various hardware wallets for more information: Trezor - https://doc.satoshilabs.com/trezor-faq/overview.html https://blog.trezor.io/using-advanced-recovery-on-trezor-4af0eb53c3bb Ledger Nano S - https://support.ledgerwallet.com/hc/en-us/articles/360000613793-Initialize-your-device Ledger Blue - https://support.ledgerwallet.com/hc/en-us/articles/360005835414-Initialize-your-device KeepKey - https://help.keepkey.com/start-here/initialize-your-keepkey https://help.keepkey.com/how-to-guides/how-to-recover-your-keepkey These questions are from the March and (rescheduled) April monthly Patreon Q&A sessions, as well as 'The Internet of Money' tour in Dublin, Ireland, which took place on March 31st, May 5th, and May 23rd 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. 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 Watch the full event talk here: https://youtu.be/mPMsbgWl9p4 RELATED: How do I choose a wallet? - https://youtu.be/tN6b62sEpsY Secure, tiered storage system - https://youtu.be/uYIVuZgN95M Setting up secure storage devices - https://youtu.be/wZ9LxLLvfXc What is a private key? - https://youtu.be/xxfUpIV9wRI How do mneomonic seeds work? - https://youtu.be/wWCIQFNf_8g Using paper wallets - https://youtu.be/cKehFazo8Pw Wallet design and mass adoption - https://youtu.be/WbZX6BDZJHc Cryptographic primitives - https://youtu.be/RIckQ6RBt5E Public keys vs. addresses - https://youtu.be/8es3qQWkEiU Re-using addresses - https://youtu.be/4A3urPFkx8g Coin selection and privacy - https://youtu.be/3Ck683CQGAQ Multi-signature and distributed storage - https://youtu.be/cAP2u6w_1-k Nonces, mining, and quantum computing - https://youtu.be/d4xXJh677J0 Software distribution security - https://youtu.be/_V0vqy046YM Protocol development security - https://youtu.be/4fsL5XWsTJ4 Geopolitics and state-sponsored attacks - https://youtu.be/htxPRTJLK-k How to get people to care about security - https://youtu.be/Ji1lS9NMz1E Honest nodes and consensus - https://youtu.be/KAhY2ymI-tg Why running a node is important - https://youtu.be/oX0Yrv-6jVs 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: 8690 aantonop
Creation of CyberSafe PKI Identification
 
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It is recommended to fill out all the fields that the user wants to be included in the ID. On this screen the size of the keys should be selected, as well as the crypto providers, with which the user is going to use it. MS CyberSafeP can not be disabled. The GOST crypto provider is available only after installation of Crypto-PRO CyberSafeP. If the key size is large, the process of its issuance will theoretically be longer, as well as the time spent on the data encryption. But with that also the degree of complexity of such data to be decrypted is higher. However, in practice the time spent on the issuance and encryption even with key 4096 on the modern PC is insignificant, while the reliability of the encryption increases substantially. In 2011, the guaranteed encryption is encryption by a RSA 2048 bit key and AES 256 bit algorithm. The option "Publish on the server" allows the user to upload the public ID on the server so everyone could encrypt the data for him. After clicking "Next" CyberSafe will generate keys, create certificates, graphic files, digital signatures and place them in the archive, which will be encrypted by password and will have the name of user's e-mail with id extension. The chosen password should be as long as possible. If the user is not going to keep the certificates on a flash drive or token to remember the password is not required. However, we strongly recommend making a backup copy of the ID and putting it in a safe place with the indicated password. In the case of recovery or transfer of CyberSafe a password will be required for id.
Views: 109 Evgeniy A. Zhukov
Panel: Quantum Computing: Security Game Changer - CyCon 2018
 
01:01:55
The NATO Cooperative Cyber Defence Centre of Excellence (CCDCOE) organised its 10th International Conference on Cyber Conflict (CyCon 2018) in Tallinn, on the theme of maximising effects in the cyber domain. In the coming years, quantum computers (QCs) will bring the biggest single advance in the information age. All the prototyped and proposed QCs can solve extremely large and specific problems – the kinds of problems that are intractable on even the largest computers today. Although only a few companies presently sell QC-related products, all areas of information processing – especially those relying on intractability – should prepare for the global availability of QCs. Much of cryptography is built on classical intractability (factoring numbers, finding elliptic curves, etc.), with implications for secrecy, privacy, key exchange and signatures. These will be vulnerable and easily broken by QC. As a result, much groundwork has been done on both post-QC cryptography and key-exchange, as well as QC-based cryptanalysis. By contrast, relatively little work has been done in other QC-based aspects of cybersecurity, such as malware generation and detection, advanced multi vector threat detection, mapping the cyber battlefield and optimising cyber battle plans. Many of these cybersecurity problems are very large-scale, involve search and optimisation and can likely be executed in new ways with QC giving an entirely new cyber conflict asymmetry. This panel will discuss the full breadth of QC’s impact on all aspects of cybersecurity, from cryptography to cyberwarfare. Panelists: 1. Prof. Barry C. Sanders, University of Calgary 2. Prof. Norbert Lütkenhaus, Institute for Quantum Computing, Department of Physics, University of Waterloo, Canada 3. Prof. Troy Lee, Associate Professor, Nanyang Technological University Moderator: Prof. Bruce W. Watson, Chief Scientist, IP Blox **Note that some presentations were submitted and created in a personal capacity and are not necessarily affiliated with, nor representative of, the views of the speakers’ respective organisations** The NATO Cooperative Cyber Defence Centre of Excellence (CCDCOE) is a NATO-accredited cyber defence hub focusing on research, training and exercises. The international military organisation based in Estonia is a community of currently 21 nations providing a 360-degree look at cyber defence, with expertise in the areas of technology, strategy, operations and law.
Views: 92 natoccdcoe
Bitcoin Q&A: What is a private key?
 
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What is a private key? How are they generated and formatted? Are private keys transmitted when you make a transaction? What are the chances of collision? Will quantum computing making it easy to guess private keys? Does implementing quantum-proof algorithms require an overhaul of the code? Learn more from the following chapters of 'Mastering Bitcoin': https://github.com/bitcoinbook/bitcoinbook/blob/f8b883dcd4e3d1b9adf40fed59b7e898fbd9241f/ch04.asciidoc https://github.com/bitcoinbook/bitcoinbook/blob/f8b883dcd4e3d1b9adf40fed59b7e898fbd9241f/ch05.asciidoc Key to address code: https://github.com/bitcoinbook/bitcoinbook/blob/35f1c62f192dd0eaf1b1c462f88a46e0f5942e16/code/key-to-address-ecc-example.py These questions are from the MOOC 9.3 and 9.4 sessions, as well as the (rescheduled) April Patreon Q&A session, which took place on March 2nd, March 9th, and May 5th 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. 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: Bitcoin: Where the Laws of Mathematics Prevail - https://youtu.be/HaJ1hvon0E0 Advanced Bitcoin Scripting Part 1: Transactions & Multisig - https://youtu.be/8FeAXjkmDcQ Advanced Bitcoin Scripting Part 2: SegWit, Consensus, and Trustware - https://youtu.be/pQbeBduVQ4I Cryptographic primitives - https://youtu.be/RIckQ6RBt5E Nonces, mining, and quantum computing - https://youtu.be/d4xXJh677J0 Public keys vs. addresses - https://youtu.be/8es3qQWkEiU Re-using addresses - https://youtu.be/4A3urPFkx8g What happens to our bitcoins during a hard fork? - https://youtu.be/sNR76fWd7-0 How do mnemonic seeds work? - https://youtu.be/wWCIQFNf_8g Multi-signature and distributed storage - https://youtu.be/cAP2u6w_1-k What is Segregated Witness? - https://youtu.be/dtOjjB4mD8k SegWit and fork research - https://youtu.be/OorLoi01KEE Forkology: A Study of Forks for Newbies - https://youtu.be/rpeceXY1QBM MimbleWimble and Schnorr signatures - https://youtu.be/qloq75ekxv0 Protocol development security - https://youtu.be/4fsL5XWsTJ4 Migrating to post-quantum cryptography - https://youtu.be/dkXKpMku5QY 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: 6340 aantonop
General Versus Specific Hardness Assumptions in Cryptography
 
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Eleventh IACR Theory of Cryptography Conference TCC 2014 February 24-26, 2014 Russell Impagliazzo (UCSD)
Views: 412 Calit2ube
Yasufumi Hashimoto - Cryptanalysis of the Multivariate Signature Scheme Proposed in  PQCryptop 2013
 
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Yasufumi Hashimoto of the University of Ryukyus presented a talk titled: Cryptanalysis of the multivariate signature scheme proposed in PQCrypto 2013 at the 2014 PQCrypto conference in October, 2014. Abstract: In PQCrypto 2013, Yasuda, Takagi and Sakurai proposed a new signature scheme as one of multivariate public key cryptosystems (MPKCs). This scheme (called YTS) is based on the fact that there are two isometry classes of non-degenerate quadratic forms on a vector space with a prescribed dimension. The advantage of YTS is its efficiency . In fact, its signature generation is eight or nine times faster than Rainbow of similar size. For the security, it is known that the direct attack, the IP attack and the min-rank attack are applicable on YTS, and the running times are exponential time for the first and the second attacks and subexponential time for the third attack. In the present paper, we give a new attack on YTS using an approach similar to the diagonalization of a matrix. Our attack works in polynomial time and it actually recovers equivalent secret keys of YTS having 140-bits security against min-rank attack in several minutes. PQCrypto 2014 Book: http://www.springer.com/computer/security+and+cryptology/book/978-3-319-11658-7 Workshop: https://pqcrypto2014.uwaterloo.ca/ Find out more about IQC! Website - https://uwaterloo.ca/institute-for-qu... Facebook - https://www.facebook.com/QuantumIQC Twitter - https://twitter.com/QuantumIQC
Advanced Security: Lab 5 (File Encryption) Part 1
 
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Details at: http://asecuritysite.com/crypto/day5
Views: 263 Bill Buchanan OBE
Secret Sharing Schemes
 
52:41
Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 11633 nptelhrd
Cryptography and Network Security - Data Encryption Standard(Part 1) - GATE(CSE)
 
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The complete YouTube playlist can be viewed here: https://goo.gl/mjyDev This lesson explains Data Encryption Standard, under the course, "Cryptography and Network Security for GATE Computer Science Engineering". 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 Cryptography and Network Security - Data Encryption Standard (Part1) - GATE(CSE)
Bitcoin Q&A: Setting up secure storage devices
 
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How secure are mobile wallets compared to desktops or hardware wallets? How easy is it for each type of device to be compromised? Does a factory reset or re-installed operating system help? How hard is it to properly set up a factory-reset or airgapped laptops? Can malware be transmitted via USB? What is the Glacier Protocol? These questions are from the MOOC 9.4 session, as well as a monthly Patreon Q&A session, which took place on March 9th and March 31st 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. 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: How do I choose a wallet? - https://youtu.be/tN6b62sEpsY Secure, tiered storage system - https://youtu.be/uYIVuZgN95M What is a private key? - https://youtu.be/xxfUpIV9wRI Using paper wallets - https://youtu.be/cKehFazo8Pw Wallet design and mass adoption - https://youtu.be/WbZX6BDZJHc Cryptographic primitives - https://youtu.be/RIckQ6RBt5E Public keys vs. addresses - https://youtu.be/8es3qQWkEiU Re-using addresses - https://youtu.be/4A3urPFkx8g Coin selection and privacy - https://youtu.be/3Ck683CQGAQ Multi-signature and distributed storage - https://youtu.be/cAP2u6w_1-k Nonces, mining, and quantum computing - https://youtu.be/d4xXJh677J0 Software distribution security - https://youtu.be/_V0vqy046YM Protocol development security - https://youtu.be/4fsL5XWsTJ4 Geopolitics and state-sponsored attacks - https://youtu.be/htxPRTJLK-k How to get people to care about security - https://youtu.be/Ji1lS9NMz1E Honest nodes and consensus - https://youtu.be/KAhY2ymI-tg Why running a node is important - https://youtu.be/oX0Yrv-6jVs On the topic of inheritance and estate planning, see: https://youtu.be/4g8rO_queMw 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: 7132 aantonop
Comptia - Security+ SYO 501 - My Experience (Spoiler: I PASSED!!!!))
 
06:33
I took the test today and miracle of miracles, I passed. This was my experience and what I did to study for it. Summary: Security+ Get Certified Get Ahead - SYO 501 Study Guide - Darril Gibson (Kindle) TONS of handwritten flash cards Darril Gibson's website with sample questions (I think $30 for a few months access) Certmaster practice questions A fair amount of Professor Messer videos Anything I could find on Google Oh and I found a cool app called Quizlet, which I used to study ports and RAID Note: I was asked zero questions about ports and RAID, but my guess is many other versions of the exam do ask plenty of them so don't take my experience too literally. This was just mine.
Views: 8876 A Guy
Threshold (Signature) of Greatness - Dr. Craig Wright - Hong Kong 2017
 
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nChain Chief Scientist Dr. Craig Wright speaks about how Threshold Signatures and advanced technology can power Bitcoin's greater future. He discusses some of nChain's research and innovation work to support growth of the bitcoin network for everyone's benefit, and dares the bitcoin community to dream of a greater future for bitcoin. This speech was given at Bitkan's "Shape the Future" Blockchain Global Summit - Tech Session in Hong Kong (September 21, 2017) nChain is the global leader in research and development of blockchain technologies.
Views: 4852 nChain
Professor Messer's Security+ Study Group - July 2018
 
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Security+ Training Course Index: http://professormesser.link/sy0401 Professor Messer’s Course Notes: http://professormesser.link/sy0401cn http://professormesser.link/sy0501cn Frequently Asked Questions: http://professormesser.link/faq Download entire video course: http://professormesser.link/401adyt Get the course on MP3 audio: http://professormesser.link/401vdyt Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ 0:02 - Start Time 1:00 - Announcements 9:04 - Socrative 10:06 - Sample Question 11:42 - Answer 14:25 - Question 1 (Performance-Based) 18:50 - Answer 20:13 - Question 2 24:51 - Answer 25:14 - Question 3 29:38 - Answer 34:21 - Question 4 37:22 - Answer 41:10 - Question 5 45:59 - Answer 48:48 - Question 6 51:38 - Answer 55:00 - Calendar 56:38 - After Show 59:37 - Caller #1 Do you have any suggestions for additional resources for the topic of cryptology hacking to prepare for the Security+ 501 exam? 1:04:31 - Caller #2 How would you secure a captive portal? 1:11:11 - Caller #3 Any plans to provide other certification content for example like CySA+ or PentTest+? 1:16:55 - Caller #4 What is the primary purpose of RIP hold down timers? 1:23:23 - What is the difference between BDPU filter and BDPU guard? 1:27:45 - Chat Room Do you have any resources on identifying malicious scripts? 1:28:30 - CompTIA Objectives FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 3228 Professor Messer
digital signature online buy
 
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Dear Friends, Please subscribe my Channel for learning all types videos. also visit : below link for updates. Youtube : https://www.youtube.com/channel/UCQGsNX3XerE3FgjWblL1jCQ?sub_confirmation=1 Blogger : http://ramdevkushwaha.blogspot.in/ Facebook : https://www.facebook.com/ramdevkushwaha/ Twitter: https://twitter.com/ramdevkushwaha Google + : https://plus.google.com/u/0/b/109831104576151696522/
Views: 201 Ramdev Kushwaha
(New Discuss By Andreas M. Antonopoulos) hard fork to increase the block size in the future?
 
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How likely is a hard fork to increase the block size in the future? Under what conditions might that happen? What is being prioritised in the roadmap? Why implement Segregated Witness (SegWit) instead of "simply" increasing the block size limit? More on SegWit and capacity increase research: https://bitcoincore.org/en/2015/12/23/capacity-increases-faq/ More on Bitcoin hard fork research: https://bitcoinhardforkresearch.github.io/ These questions are from the February Patreon live Q&A and MOOC session 9.5, which took place on February 24th and March 16th 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. 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: What is a fork? - https://youtu.be/QwEDtdkV3Q4 What happens during a fork? - https://youtu.be/XBk8hBJ1xVo Airdrop coins and privacy implications - https://youtu.be/JHRnqJJ0rhc The dangers of hard forks in protocol evolution - https://youtu.be/vxEHRvhJKvA Proof-of-work changes - https://youtu.be/AcaktuPdQrc A voluntary alternative to mandatory currencies - https://youtu.be/5ogv3Eya9nQ Consensus Algorithms, Blockchain Technology, and Bitcoin - https://youtu.be/fw3WkySh_Ho Advanced Bitcoin Scripting Part 2: SegWit, Consensus, and Trustware - https://youtu.be/pQbeBduVQ4I What is Consensus: Rules without Rulers - https://youtu.be/2tqo7PX5Pyc Forkology: A Study of Forks for Newbies - https://youtu.be/rpeceXY1QBM What is the roadmap? - https://youtu.be/5Eoj_sKyC90 Nonces, mining, and quantum computing - https://youtu.be/d4xXJh677J0 Cryptographic primitives - https://youtu.be/RIckQ6RBt5E The rules of Bitcoin (part 1) - https://youtu.be/VnQu4uylfOs The rules of Bitcoin (part 2) - https://youtu.be/vtIp0GP4w1E Rules versus rulers - https://youtu.be/9EEluhC9SxE Migrating to post-quantum cryptography - https://youtu.be/dkXKpMku5QY Honest nodes and consensus - https://youtu.be/KAhY2ymI-tg Scaling, trust, and trade-offs - https://youtu.be/vCxmHwqyJWU What is the role of nodes? - https://youtu.be/fNk7nYxTOyQ Why running a node is important - https://youtu.be/oX0Yrv-6jVs Misconceptions about the Lightning Network - https://youtu.be/c4TjfaLgzj4 Lightning, full nodes, and miners - https://youtu.be/dlJG4OHdJzs What is Segregated Witness? - https://youtu.be/dtOjjB4mD8k SegWit adoption - https://youtu.be/KCsTVTRk6I4 MimbleWimble and Schnorr signatures - https://youtu.be/qloq75ekxv0 Atomic swaps - https://youtu.be/fNFBA2UmUmg 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 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/)
Bitcoin Q&A: Block capacity and embedded data
 
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How many transactions can fit in a block, with or without SegWit? What other types of data can you put in a block? What is metadata? What is OP_RETURN? What is OpenTimestamps and what are the use cases? More on OP_RETURN - https://en.bitcoin.it/wiki/OP_RETURN Check out OpenTimestamps here: https://opentimestamps.org/ These questions are from MOOC 9.6 and the June monthly Patreon sessions, which took place on March 23rd and June 24th 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. 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: Immutability and Proof-of-Work: The Planetary Scale Digital Monument - https://youtu.be/rsLrJp6cLf4 What is Segregated Witness? - https://youtu.be/dtOjjB4mD8k SegWit and fork research - https://youtu.be/OorLoi01KEE The value of proof-of-work - https://youtu.be/ZDGliHwstM8 Scaling strategies and adoption - https://youtu.be/dML1a_Ek9Kw Impact of smart contracts on law & accounting - https://youtu.be/K-TRzuPwJCc Instrinsic vs. extrinsic assets - https://youtu.be/KDtfFNZy9xg MimbleWimble and Schnorr signatures - https://youtu.be/qloq75ekxv0 Empty blocks, orphan blocks, and valid chains - https://youtu.be/dizF2S63RXY Setting up secure storage devices - https://youtu.be/wZ9LxLLvfXc Multi-signature and distributed storage - https://youtu.be/cAP2u6w_1-k Cryptographic primitives - https://youtu.be/RIckQ6RBt5E Why Open Blockchains Matter - https://youtu.be/uZPIz3ArQww 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: 4962 aantonop
Verify Certificate
 
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If you are warned that there is an issue with the name of the Security Certificate when attemptong to send or receive email on the InternetM8 Hosted Mail services it is NOT a problem. This video explains what you need to do to prevent the issue reoccurring.
Views: 787 BusinessM8
(New Prediction Andreas Antonopoulos) Should difficulty re-targeting still happen every 2016 blocks?
 
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How does difficulty targeting work? What determines the desired pattern? Should difficulty re-targeting still happen every 2016 blocks? Could difficulty changes (and hence profitability changes) make all miners drop out? These questions are from the MOOC 7.2 and 9.2 sessions, which took place on February 26th 2017 and February 23rd 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. 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: What is mining? - https://youtu.be/t4p4iMqmxbQ Miners, pools, and consensus - https://youtu.be/JHz7LM4ncLw The mining process - https://youtu.be/L4Xtau0YMJw Nonces, mining, and quantum computing - https://youtu.be/d4xXJh677J0 Honest nodes and consensus - https://youtu.be/KAhY2ymI-tg Genesis block and coinbase transactions - https://youtu.be/strhfzJ56QE Proof-of-work changes - https://youtu.be/AcaktuPdQrc SegWit and fork research - https://youtu.be/OorLoi01KEE What is the role of nodes? - https://youtu.be/fNk7nYxTOyQ Why running a node is important - https://youtu.be/oX0Yrv-6jVs 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-Mon... [NEW] THE INTERNET OF MONEY, v2: https://www.amazon.com/Internet-Money... MASTERING BITCOIN: https://www.amazon.co.uk/Mastering-Bi... [NEW] MASTERING BITCOIN, 2nd Edition: https://www.amazon.com/Mastering-Bitc... Translations of MASTERING BITCOIN: https://bitcoinbook.info/translations... 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/)
QURREX – The first multifunctional hybrid digital asset exchange ecosystem
 
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Qurrex plans to store up to 98% of funds offline, multi-signature, and protected by Hardware Security Module (Would like to know more about HSM, please visit: https://www.ibm.com/support/know...) .Qurrex also provies highly-secure storage of digital assets in a separate encoded contour of the node, preventing hackers form stealing the user’s assets. With the degree of transparency that Qurrex offers on its platform, users will be able to trade based on the proven success of other users and not just on the claims of success that are so popular on social platforms. Qurrex is elevating social trading to another level with its approach, proving how combining the potential of social media with the power of blockchain technology can benefit everyone financially Please note that all the information in this video is just my personal opinion and is not investment advice. Do your own research before making any investment decisions. I make no representations, warranties, or assurances as to the accuracy, currency or completeness of the content contained in this video or any sites linked to or from this video Website: https://qurrex.com/ Whitepaper: https://drive.google.com/file/d/1klzZPHdjCBnurHCJjJbjwsed_5rx4W1U/view Telegram: @joseph_ive Bitcointalk profile link: https://bitcointalk.org/index.php?action=profile&u=1417448
Views: 566 Crypto Daily
Bucket Brigade Attack, Man in the Middle (MIM)
 
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This video is part of the Udacity course "Intro to Information Security". Watch the full course at https://www.udacity.com/course/ud459
Views: 421 Udacity
Abbas El Gamal | Randomness Generation
 
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Claude Shannon Centennial Symposium Rackham Building Amphitheatre University of Michigan, Ann Arbor Abbas El Gamal, Hitachi America Professor and Fortinet Founders Chair from Stanford University, talks about Information Theoretic Limits for Randomness Generation. Abbas El Gamal received his B.Sc. Honors degree in Electrical Engineering from Cairo University in 1972, and his M.S. in Statistics and Ph.D. in Electrical Engineering from Stanford University in 1977 and 1978, respectively. From 1978 to 1980, he was an Assistant Professor at USC. He has been on the Stanford faculty since 1981, where he is currently the Hitachi America Professor in the School of Engineering and Fortinet Founders Chair of the Department of Electrical Engineering. From 1997 to 2002, he served as the principal investigator on the Stanford Programmable Digital Camera program. From 2004 to 2009, he was Director of the Information Systems Laboratory. He was a visiting professor and MacKay Fellow at the University of California, Berkeley in Fall 2009-2010, and visited Tsinghua University as member of the Tsinghua Guest Chair Professor Group on Communications and Networking in Spring 2009-2010. Prof. El Gamal's research contributions have spanned several areas, including network information theory, Field Programmable Gate Array, and digital imaging devices and systems. He has authored or coauthored over 230 papers and holds over 30 patents in these areas. He has coauthored the book Network Information Theory (Cambridge Press 2011). Prof. El Gamal is a member of the National Academy of Engineering and a Fellow of the IEEE. He has received several honors and awards for his research contributions, including the 2016 IEEE Richard W. Hamming Medal, the 2014 Viterbi Lecture, the 2013 Shannon Memorial Lecture, the 2012 Claude E. Shannon Award, the inaugural Padovani Lecture, and the 2004 INFOCOM Paper Award. Prof. El Gamal has also played key roles in several Silicon Valley companies. In 1984, he founded the LSI Logic Research Lab, which later became the Consumer Product Division. In 1986, he cofounded Actel, where he served in several capacities, including Chief Scientist. In 1990, he co-founded Silicon Architects, where he was Chief Technical Officer and member of the board of directors until Synopsys acquired it in 1995. He was a Vice President of Synopsys from 1995 to 1997. He co-founded Pixim in 1999 (now part of Sony) and Inscopix in 2011 to commercialize imaging technologies developed under the programmable digital camera program. He has also served on the board of directors and advisory boards of several other semiconductor, EDA, and Biotech startups. http://www-isl.stanford.edu/people/abbas/ For more lectures on demand, please visit the MconneX website: http://engin.umich.edu/mconnex/lectures
What is a Quantum Bit + Cracking RSA - EEs Talk Tech Electrical Engineering Podcast #16
 
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How do you set a quantum bit? Is RSA dead? Click to subscribe! ► http://bit.ly/Scopes_Sub ◄ https://www.eestalktech.com/quantum-bits Twitter: @Keysight_Daniel https://twitter.com/Keysight_Daniel Learn more about using oscilloscopes: http://oscilloscopelearningcenter.com Check out the EEs Talk Tech electrical engineering podcast: https://www.eestalktech.com More about Keysight oscilloscopes: http://bit.ly/SCOPES Check out our blog: http://bit.ly/ScopesBlog Agenda: 00:40 Lee talks about how to crack RSA and Shor's algorithm The history of quantum computing. The 1st to propose it was Richard Feynman in the 1960s. Interest soon died out. 1990s - Dr. Shor published a paper saying if one could build a quantum computer with certain parameters, then one could factor a very large number Today's security uses the RSA public key system and the Diffie Hellman Key Exchange algorithm HTTPS uses the Diffie Hellmen Key Exchange algorithm. RSA stands for Rivest, Shamir, and Adelman 4:00 RSA works only for people known to each other, Diffie Hellman works for anyone 5:00 Factoring numbers that consist of large prime numbers is the basis for RSA. The processing needed to factor them is too large to be practical 6:45 Shor's algorithm is fast enough to crack RSA. If one could build a quantum computer with enough quantum bits then use a machine language cycle time that is us or ms, then one could factor thousand bit numbers 7:50 When will they be built? Some say 10 years, others 50 8:45 What does a quantum computer look like? An architectural description is easier to describe. A quantum computer similar to a classical computer, a quantum computer is a co-processor that will co-exist with current forms of digital electronics 9:15 Shor's algorithm has a lot of common commands - if statements and for loops. But, quantum gates are used in a quantum processor 10:00 Because a quantum gate operates in time instead of space, the term "gate" isn't accurate 10:30 What quantum computers exist today? Some exist with just a few quantum bits. People claim they've created quantum computers with 21 quantum bits. But, there can be a lot of errors and noise. For example, can a proper setup and hold time be maintained? 11:50 The Schrodinger's Cat analogy - In reality, if you've put a piece of physics into a superimposed quantum state, a disturbance of it (photon impact) will cause it to collapse into the wrong state or collapse too early 13:15 Quantum bits have to be thoroughly isolated. We use vacuums or extreme cold temperatures (well below 1 degree Kelvin!) 13:45 Research companies making claims about the number quantum bits are not using solid state quantum computers. The isolation of a quantum computer isn't be perfect, so there's a short lifetime for the computation before the probability of errors get's too high. 14:35 Why do we use a superposition of states? Why does the timing matter? If it collapses at the wrong time it returns a wrong answer. Shor's algorithm makes it easy to check for the right answer. And, you get a remainder of 0 or your don't. If mod(x) = 0, you know the answer is correct. The computation only has to be reliable enough because you can check your answer 16:15 If the odds of getting the right answer is high enough, it's ok to get the wrong answer on occasion. 16:50 How do you write a quantum bit? It depends on the physical system. You can write a quantum bit by putting energy in the system, i.e. using a very small number photon pulse with a specific timing and phase 18:15 Keysight helps quantum computer researchers generate and measure pulses with high levels of precision The pulses are carefully timed and correlated with sub-nanosecond precision 19:40 What is a quantum bit? There are two common kinds. 1 - Ions in a vacuum trapped by lasers. The ions are static because they are held in place by standing waves. The vacuum can be at room temperature and the ions are low temp because they can't move 2. Josephson junctions in tank circuits (resonant circuit, LC circuit, tuned circuit) makes oscillations at microwave frequencies. Under the right conditions, they can behave like an abstract two state quantum system. You simply have to designate zero and one to different states of the system. Probabilities are the wrong description, it;s actually complex quantum amplitudes. 24:30 Stupid question section: "If you had Schrodinger's cat in a box, would you look or not?" Watch to find out Lee's answer! #quantumcomputing #quantumbits #quantumcomputer #electricalengineeringpodcast #engineeringpodcast #podcast #RSA #computing #computer #electronics #electricalengineering #computerengineering
Views: 1080 Keysight Labs
What is Schnorr, BN and Musig?
 
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http://prezi.com/amezx3cubxy0/ -------------------------- Seminar: http://programmingblockchain.com/ Newsletter: http://eepurl.com/cZr_Aj Medium: https://medium.com/@jimmysong Twitter: https://twitter.com/jimmysong Github: https://github.com/jimmysong
(New Prediction Andreas Antonopoulos) Are private keys transmitted when you make a transaction?
 
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What is a private key? How are they generated and formatted? Are private keys transmitted when you make a transaction? What are the chances of collision? Will quantum computing making it easy to guess private keys? Does implementing quantum-proof algorithms require an overhaul of the code? Learn more from the following chapters of 'Mastering Bitcoin': https://github.com/bitcoinbook/bitcoi... https://github.com/bitcoinbook/bitcoi... Key to address code: https://github.com/bitcoinbook/bitcoi... These questions are from the MOOC 9.3 and 9.4 sessions, as well as the (rescheduled) April Patreon Q&A session, which took place on March 2nd, March 9th, and May 5th 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. 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: Bitcoin: Where the Laws of Mathematics Prevail - https://youtu.be/HaJ1hvon0E0 Advanced Bitcoin Scripting Part 1: Transactions & Multisig - https://youtu.be/8FeAXjkmDcQ Advanced Bitcoin Scripting Part 2: SegWit, Consensus, and Trustware - https://youtu.be/pQbeBduVQ4I Cryptographic primitives - https://youtu.be/RIckQ6RBt5E Nonces, mining, and quantum computing - https://youtu.be/d4xXJh677J0 Public keys vs. addresses - https://youtu.be/8es3qQWkEiU Re-using addresses - https://youtu.be/4A3urPFkx8g What happens to our bitcoins during a hard fork? - https://youtu.be/sNR76fWd7-0 How do mnemonic seeds work? - https://youtu.be/wWCIQFNf_8g Multi-signature and distributed storage - https://youtu.be/cAP2u6w_1-k What is Segregated Witness? - https://youtu.be/dtOjjB4mD8k SegWit and fork research - https://youtu.be/OorLoi01KEE Forkology: A Study of Forks for Newbies - https://youtu.be/rpeceXY1QBM MimbleWimble and Schnorr signatures - https://youtu.be/qloq75ekxv0 Protocol development security - https://youtu.be/4fsL5XWsTJ4 Migrating to post-quantum cryptography - https://youtu.be/dkXKpMku5QY 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-Mon... [NEW] THE INTERNET OF MONEY, v2: https://www.amazon.com/Internet-Money... MASTERING BITCOIN: https://www.amazon.co.uk/Mastering-Bi... [NEW] MASTERING BITCOIN, 2nd Edition: https://www.amazon.com/Mastering-Bitc... Translations of MASTERING BITCOIN: https://bitcoinbook.info/translations... 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/)