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Kerberos in Hindi – Network Authentication Protocol, KDC, AS, TGS
 
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Kerberos in Hindi – Network Authentication Protocol, KDC, AS, TGS Like FB Page - https://www.facebook.com/Easy-Engineering-Classes-346838485669475/ Complete Data Structure Videos - https://www.youtube.com/playlist?list=PLV8vIYTIdSna11Vc54-abg33JtVZiiMfg Complete Java Programming Lectures - https://www.youtube.com/playlist?list=PLV8vIYTIdSnbL_fSaqiYpPh-KwNCavjIr Previous Years Solved Questions of Java - https://www.youtube.com/playlist?list=PLV8vIYTIdSnajIVnIOOJTNdLT-TqiOjUu Complete DBMS Video Lectures - https://www.youtube.com/playlist?list=PLV8vIYTIdSnYZjtUDQ5-9siMc2d8YeoB4 Previous Year Solved DBMS Questions - https://www.youtube.com/playlist?list=PLV8vIYTIdSnaPiMXU2bmuo3SWjNUykbg6 SQL Programming Tutorials - https://www.youtube.com/playlist?list=PLV8vIYTIdSnb7av5opUF2p3Xv9CLwOfbq PL-SQL Programming Tutorials - https://www.youtube.com/playlist?list=PLV8vIYTIdSnadFpRMvtA260-3-jkIDFaG Control System Complete Lectures - https://www.youtube.com/playlist?list=PLV8vIYTIdSnbvRNepz74GGafF-777qYw4
Views: 102706 Easy Engineering Classes
Protocol State Machines and Session Languages
 
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Protocol State Machines and Session Languages Erik Poll Presented at the 2015 LangSec Workshop at the IEEE Symposium on Security & Privacy Workshops May 21, 2015 San Jose, CA http://www.ieee-security.org/TC/SP2015/ http://spw15.langsec.org/ ABSTRACT Input languages, which describe the set of valid inputs an application has to handle, play a central role in language-theoretic security, in recognition of the fact that overly complex, sloppily specified, or incorrectly implemented input languages are the root cause of many security vulnerabilities. Often an input language not only involves a language of individual messages, but also some protocol with a notion of a session, i.e. a sequence of messages that makes up a dialogue between two parties. This paper takes a closer look at languages for such sessions, when it comes to specification, implementation, and testing - and as a source of insecurity. We show that these 'session' languages are often poorly specified and that errors in implementing them can cause security problems. As a way to improve this situation, we discuss the possibility to automatically infer formal specifications of such languages, in the form of protocol state machines, from implementations by black box testing.
X.509 AUTHENTICATION SERVICE PART 1 - NETWORK SECURITY
 
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X.509 AUTHENTICATION SERVICE PART 1 - NETWORK SECURITY #networksecuritylectures, #informationsecuritylectures, #x509authenticationservice
Language based techniques for cryptography and privacy
 
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UCL Computer Science Distinguished Lecture A common theme in program verification is establishing relationships between two runs of the same program or of different programs. Such relationships can be proved by semantical means, or with syntactic methods such as relational program logics and product constructions. Gilles shall present an overview of these methods and their applications to provable security, differential privacy, and secure implementations. Gilles Barthe is a research professor at the IMDEA Software Institute. His research interests include logic, formal verification, programming languages, and security. His current work focuses on verification and synthesis methods for cryptography and differential privacy. He is a member of the editorial boards of the Journal of Automated Reasoning and Journal of Computer Security. He received a Ph.D. in Mathematics from the University of Manchester, UK, in 1993, and an Habilitation à diriger les recherches in Computer Science from the University of Nice, France, in 2004.
Views: 309 UCLComputerScience
Diffie-hellman key exchange | Journey into cryptography | Computer Science | Khan Academy
 
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Walkthrough of Diffie-Hellman Key Exchange Watch the next lesson: https://www.khanacademy.org/computing/computer-science/cryptography/modern-crypt/v/intro-to-rsa-encryption?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/cryptography/modern-crypt/v/discrete-logarithm-problem?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Computer Science on Khan Academy: Learn select topics from computer science - algorithms (how we solve common problems in computer science and measure the efficiency of our solutions), cryptography (how we protect secret information), and information theory (how we encode and compress information). About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Computer Science channel: https://www.youtube.com/channel/UC8uHgAVBOy5h1fDsjQghWCw?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 228093 Khan Academy Labs
Formally Verified Cryptographic Web Applications in WebAssembly
 
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Formally Verified Cryptographic Web Applications in WebAssembly - Jonathan Protzenko Presented at the 2019 IEEE Symposium on Security & Privacy May 20–22, 2019 San Francisco, CA http://www.ieee-security.org/TC/SP2019/ After suffering decades of high-profile attacks, the need for formal verification of security-critical software has never been clearer. Verification-oriented programming languages like F* are now being used to build high-assurance cryptographic libraries and implementations of standard protocols like TLS. In this paper, we seek to apply these verification techniques to modern Web applications, like WhatsApp, that embed sophisticated custom cryptographic components. The problem is that these components are often implemented in JavaScript, a language that is both hostile to cryptographic code and hard to reason about. So we instead target WebAssembly, a new instruction set that is supported by all major JavaScript runtimes. We present a new toolchain that compiles Low*, a low-level subset of the F* programming language, into WebAssembly. Unlike other WebAssembly compilers like Emscripten, our compilation pipeline is focused on compactness and auditability: we formalize the full translation rules in the paper and implement it in a few thousand lines of OCaml. Using this toolchain, we present two case studies. First, we build WHACL*, a WebAssembly version of the existing, verified HACL* cryptographic library. Then, we present LibSignal*, a brand new, verified implementation of the Signal protocol in WebAssembly, that can be readily used by messaging applications like WhatsApp, Skype, and Signal.
A Lightweight Formal Approach for Analyzing Security of Web Protocols; Apurva Kumar
 
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A Lightweight Formal Approach for Analyzing Security of Web Protocols; Apurva Kumar Existing model checking tools for cryptographic protocol analysis have two drawbacks, when applied to present day web based protocols. Firstly, they require expertise in specialized formalisms which limits their use to a small fragment of scientific community. Secondly, they do not support common web constructs and attacks making the analysis both cumbersome as well as error-prone. In this paper, we propose a novel security analysis technique specialized for web protocols. We provide explicit support for common web mechanisms and an adversary capable of exploiting browser-based interaction. Our approach has two unique aspects. It represents the only tool built using a general purpose first-order logic based modeling language – Alloy – that can be used to analyze security of industrial strength web protocols. The other unique aspect is our use of an inference system that analyzes beliefs at honest participants to simplify the protocol model. Despite its simplicity, we demonstrate effectiveness of our approach through a case-study of SAML, where we identify a previously unknown vulnerability in its identity federation workflow.
Asymmetric encryption - Simply explained
 
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How does public-key cryptography work? What is a private key and a public key? Why is asymmetric encryption different from symmetric encryption? I'll explain all of these in plain English! 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be 👍🏻 Like my Facebook page: https://www.facebook.com/savjee
What is firewall? | Types of firewall  | network firewall security | TechTerms
 
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Learn different types of firewall, types of firewall software, types of hardware firewall, different types of firewalls, types of firewalls, types firewall, types of firewalls in network security, different types of hardware firewalls, types of firewall, different types of firewall, firewall configuration types, firewall types, 7 types of firewall, types of firewall in network security, types of firewall with diagram, firewall and types of firewall, types of network firewalls, firewall and its types, what is firewall and types of firewall, types of firewall architecture, types of firewall in networking, different types of firewall in network security, what is firewall and write the types of firewall, types of firewall attacks, firewall and types, firewall types and configuration, different types of firewalls and their functions. Follow us on Facebook: https://www.facebook.com/DGTechTerms/ Follow us on Twitter: https://twitter.com/Technical_Terms Firewalls protect our computers from internet hackers. Internet hackers can steal our bank details from our computers and can reduce our bank balance from 1000s of dollars to 0 in seconds. So, firewall is must in a computer / computer network. Starting with packet filtering firewall. Suppose, I am downloading a file from internet. When the data-packet arrives a packet-filtering firewall, it only checks sender’s and receiver’s IP address and the port number. If the everything is OK, then data packet is allowed to pass through packet-filtering firewall and then to my computer. This checking process is done as per rules written in a list called access control list. The only limitation (caveats) of packet filtering firewall is that it do not checks the data portion, i.e. Payload, of the data packet. So, a hacker could send some malicious data packed in this payload section. The 2nd one is application / proxy firewall: proxy firewall do not let the web server know which computer actually wants to visit the requested website, i.e. proxy firewall hides us from the attackers in internet. Since, the application firewalls also check the data contents of the received data packet so they are generally much slower than packet-filtering firewalls. 3rd is Hybrid firewalls: Hybrid firewalls combines packet filtering firewall and application firewall in series to enhance the security. If they are connected in parallel then the security of the connection will be reduced to the parameters defined by the packet filtering firewall, i.e. application firewall will be of no use if the two firewalls are connected in parallel. For this reason, hybrid firewalls use packet filtering and application firewall in series.
Views: 307533 TechTerms
BOB 2018 - Philipp Kant: Formally Specifying Blockchain Protocols using the Psi Calculus
 
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Philipp Kant Formally Specifying Blockchain Protocols using the Psi Calculus Blockchains are distributed systems, with actors that adhere to agreed-upon protocols. The protocols ensure that the systems performs as desired, even when some of the actors behave dishonestly. Since the integrity of such a system can protect hundreds of millions of dollars, cryptographers spend great effort on designing the protocols, and proving correctness guarantees under well-specified threat models. The implementation of the actual systems running those protocols is then performed by software engineers. These two activities require different skillsets, as well as different levels of abstraction. Bridging this gap while preserving the correctness guarantees is a non-trivial task. At IOHK, we use the Psi calculus to translate the cryptographic protocols described in research papers (main protocol here, related papers here) into a formal language, producing a machine-readable, executable specification. This has multiple benefits: It creates a common language for the researchers and engineers. It forces the specification to be complete and unambiguous. It allows simulations, including performance simulations, of the systems before they are fully implemented. The leap that leads from the research paper to the implementation can then be replaced by a larger number of small steps, each refining the specification and adding more details and design decisions. It is then feasible to show that the implementation matches the paper, by verifying that each of these steps. Philipp Kant During his postdoc years in theoretical particle physics, Philipp developed a passion for Haskell, and finally made the switch to software development in 2014. Early in 2017, he joined IOHK, a cryptocurrency research and development company. http://bobkonf.de/2018/kant.html
Views: 1040 BOB
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: 189288 F5 DevCentral
"End-to-end encryption: Behind the scenes" by Martin Kleppmann, Diana Vasile
 
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There is no cloud — it's just someone else's computer. And you're storing all sorts of sensitive data on it, blindly trusting that this computer will only allow access to authorised users. What if it is compromised? End-to-end encryption avoids having to trust the servers. Although PGP/GPG encrypted email never went mainstream, secure messaging apps like WhatsApp, Signal and iMessage have shown that it is feasible for millions of people to use end-to-end encryption without being security experts. But how do these protocols actually work? In this talk, we will dig into the details of secure messaging protocols — to understand the threats against which they defend, and how cryptographic operations are combined to implement those defences in the protocol. If you have ever wondered what "forward secrecy" means, how key exchange works, or how protocols can ensure you're communicating with the right person (not an impostor like a "man in the middle"), this talk will clear things up. We will also look at taking end-to-end encryption to other areas beyond instant messaging. What would it take to build an end-to-end secure version of Google Docs, for example?
Views: 6806 Strange Loop
[HINDI] What is Cryptography? | Simple Practical in Android | Cryptography क्या होता है?
 
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Link to My Blog:- http://techdjdey.blogspot.in/ Video Editor used:- HitFilm 4 Express. https://hitfilm.com/ Screen recorder used:- iSpring Free Cam 8. https://www.ispringsolutions.com/ispring-free-cam Music:- Elektronomia-Sky High. https://www.youtube.com/watch?v=TW9d8vYrVFQ PLEASE LIKE AND SHARE THIS VIDEO. SUBSCRIBE to my Channel here:- https://www.youtube.com/channel/UCFKcqq9IOdwHdgfq6GEL8gw?sub_confirmation=1 My other videos:- https://www.youtube.com/channel/UCFKcqq9IOdwHdgfq6GEL8gw/videos IGNORE THESE BELOW: 1. what is the difference between steganography and cryptography c cryptography c cryptography example c cryptography library c cryptography tutorial cryptographic protocol e cryptography f# cryptography lightweight cryptography nonlinear cryptography o cryptography r cryptography what does cryptography have to do with math what does cryptography look like today what is a certificate in cryptography what is a cipher in cryptography what is a crib in cryptography what is a generator cryptography what is a hash cryptography what is a nonce in cryptography what is a public key cryptography what is a quantum cryptography what is a seed in cryptography what is a symmetric cryptography what is advantages of cryptography what is asymmetric key cryptography what is biometric cryptography what is bitcoin cryptography what is broken cryptography what is cbc cryptography what is chaos cryptography what is chaotic cryptography what is cipher cryptography what is classical cryptography what is cloud cryptography what is confusion and diffusion in cryptography with example what is conventional cryptography what is cryptographic hash function what is cryptographic hash functions examples what is cryptography what is cryptography algorithm what is cryptography and cryptanalysis what is cryptography and encryption what is cryptography and history what is cryptography and how is it used what is cryptography and how is it used in it security what is cryptography and its importance what is cryptography and its types what is cryptography and network security what is cryptography and network security ppt what is cryptography and network security wikipedia what is cryptography and number theory what is cryptography and steganography what is cryptography and theoretical informatics what is cryptography and why is it important what is cryptography and why is it used what is cryptography basics what is cryptography computer what is cryptography define the process of encryption and decryption what is cryptography definition what is cryptography doc what is cryptography encryption what is cryptography engineering what is cryptography error what is cryptography explain what is cryptography explain in detail what is cryptography explain its types what is cryptography hashing what is cryptography how is it used in it security what is cryptography in .net what is cryptography in c# what is cryptography in computer what is cryptography in computer network what is cryptography in computer security what is cryptography in cyber security what is cryptography in hindi what is cryptography in information security what is cryptography in java what is cryptography in mathematics what is cryptography in network security what is cryptography in networking what is cryptography in operating system what is cryptography in os what is cryptography in registry what is cryptography in security what is cryptography in simple language what is cryptography in web security what is cryptography key what is cryptography key management what is cryptography law what is cryptography library what is cryptography method what is cryptography module what is cryptography network security what is cryptography next generation what is cryptography pdf what is cryptography ppt what is cryptography provide an example what is cryptography quora what is cryptography rng seed what is cryptography salary what is cryptography salt what is cryptography service what is cryptography slideshare what is cryptography software what is cryptography system what is cryptography teach ict what is cryptography technique what is cryptography technology what is cryptography tools what is cryptography tutorial point what is cryptography types what is cryptography used for what is cryptography used for today what is cryptography video what is cryptography virus what is cryptography wikipedia what is cryptography with diagram what is cryptography with example what is cryptography yahoo what is cryptography yahoo answers what is cryptography youtube what is data cryptography what is des cryptography what is difference between cryptography and encryption what is difference between cryptography and steganography what is diffusion cryptography what is digital cryptography what is discrete logarithm in cryptography what is distributed cryptography what is dna cryptography what is dsa cryptography what is ecc cryptography what is elementary cryptography
Views: 2552 Dhrubajyoti Dey
IOHK | Cardano whiteboard; Kaleidoscope, Dr Bernardo David.
 
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In this video IOHK researcher Bernardo David introduces Kaleidoscope, a cryptographic protocol for securely playing poker, a research paper accepted to Financial Cryptography 2018. Cryptographic protocols can be used to securely play poker over a network without trusting any third party. Constructing such protocols has been a research topic since the early days of modern cryptography. However, no cryptographic poker protocol has ever been adopted for real applications, mainly due to financial, security, and efficiency concerns. Kaleidoscope https://eprint.iacr.org/2017/899 “Kaleidoscope, eprint, IACR”, is the first cryptographic poker protocol to address these three issues. It is the first protocol to be proven secure according to a comprehensive security model that formally and clearly captures all the properties and guarantees commonly required from a poker protocol. Moreover, Kaleidoscope employs blockchain techniques to ensure that winners receive their rewards and that cheaters are financially penalized. Even though it is mathematically proven to achieve security while providing financial rewards and penalty enforcements, Kaleidoscope achieves very high efficiency in comparison to existing solutions (which have not been formally proven secure). Related: Royale: A Framework for Universally Composable CardGames with Financial Rewards and Penalties Enforcement: https://iohk.io/research/papers/#MPEKMMQP Bernardo David is an Assistant Professor at the Tokyo Institute of Technology. He holds a Ph.D. in Computer Science from Aarhus University obtained in 2017 under the supervision of Ivan Damgård and Jesper Buus Nielsen. He has also been a long-term visitor at the NTT Secure Plaftorm Laboratories working with Tatsuaki Okamoto and Masayuki Abe and at the Cryptography Group at Bar Ilan University working with Yehuda Lindell. Bernardo is interested in a broad range of topics in cryptography and information theory. His current focus is on theoretical and practical aspects of secure multiparty computation and blockchains/cryptocurrencies. https://iohk.io/team/bernardo-david/ -- See more at: https://iohk.io Get our latest news updates: https://iohk.io/blog/ Meet the team: https://iohk.io/team/ Learn about our projects: https://iohk.io/projects/cardano/ Read our papers: http://iohk.link/paper-ouroboros Visit our library: https://iohk.io/research/library/ In the press: https://iohk.io/press/ Work with us: https://iohk.io/careers/ See more on Cardano: https://iohk.io/projects/cardano/ -- The Cardano PortfolioThe Cardano HubThe source for all things Cardanohttps://www.cardanohub.org/en/home/ Cardano Blockchain Explorer An open source block explorer for the Cardano project https://cardanoexplorer.com Cardano Documentation Full technical documentation of the project https://cardanodocs.com Cardano Roadmap Development path of the Cardano project https://cardanoroadmap.com Why Cardano The philosophy behind the project https://whycardano.com Daedalus Platform Open source platform https://daedaluswallet.io The Cardano Foundation Supervisory and educational body for the Cardano Protocol https://cardanofoundation.org Cardano Foundation YouTube All the latest videos & tutorials https://www.youtube.com/channel/UCbQ9... Cardano Foundation Follow the Foundation https://twitter.com/CardanoStiftung Cardano Slack Join the conversation https://cardano.herokuapp.com Cardano reddit Join the conversation https://www.reddit.com/r/cardano/ IOHK Development partner https://iohk.io IOHK blog Read about the latest technology advancements https://iohk.io/blog/ —
Views: 4431 IOHK
Cryptography for Programmers - Daniel James [ACCU 2018]
 
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WE ARE SORRY FOR THE POOR AUDIO IN THIS TALK, THE MIC FAILED AT THE START OF THE TALK LEAVING ONLY THE ONBOARD CAMERA AUDIO - WE HAVE TRIED TO CLEAN IT UP AS BEST WE CAN. In an increasingly hostile world security is becoming more and more important in today’s software design. Increasing regulation also means that security measures are mandated in the design of new software. Many programmers, however, are unfamiliar with security concepts and jargon, and find the learning curve challenging. This talk will give an introduction to cryptographic techniques and an overview of the use of cryptography in software. It is aimed at programmers, not at mathematicians or at cryptographers. The talk will be language-agnostic, but will include some discussion of common cryptographic APIs, which are typically written to be C-callable.
Views: 763 ACCU Conference
Stanford Seminar - The TLS 1.3 Protocol
 
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"The TLS 1.3 Protocol" - Eric Rescorla of Mozilla and RTFM, Inc. Support for the Stanford Colloquium on Computer Systems Seminar Series provided by the Stanford Computer Forum. Speaker Abstract and Bio can be found here: http://ee380.stanford.edu/Abstracts/151118.html For more info about the EE380 series: http://ee380.stanford.edu Colloquium on Computer Systems Seminar Series (EE380) presents the current research in design, implementation, analysis, and use of computer systems. Topics range from integrated circuits to operating systems and programming languages. It is free and open to the public, with new lectures each week. Learn more: http://bit.ly/WinYX5
Views: 11520 stanfordonline
SAML
 
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Learn how Security Assertion Markup Language (SAML) provides Single Sign-On to enterprise browser-based applications.
Views: 13618 Vidder, Inc.
Elliptic Curve Cryptography, A very brief and superficial introduction
 
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by Ron Garret Bay Area Lisp and Scheme Meetup http://balisp.org/ Sat 30 Apr 2016 Hacker Dojo Mountain View, CA Abstract This will be a beginner’s introduction to elliptic curve cryptography using Lisp as a pedagogical tool. Cryptography generally relies heavily on modular arithmetic. Lisp’s ability to change the language syntax and define generic functions provides opportunities to implement modular arithmetic operations much more cleanly than other languages. Video notes The audio for the introduction and for the questions from the audience is hard to hear. I will try to improve on that in the next batch of talks. — Arthur
Views: 3838 Arthur Gleckler
INTRODUCTION TO CRYPTOGRAPHY IN HINDI
 
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find relevant notes at-https://viden.io/
Views: 64413 LearnEveryone
3rd BIU Winter School on Cryptography: Broadcast encryption and traitor tracing - Dan Boneh
 
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The 3rd Bar-Ilan Winter School on Cryptography: Bilinear Pairings in Cryptography, which was held between February 4th - 7th, 2013. The event's program: http://crypto.biu.ac.il/winterschool2013/schedule2013.pdf For All 2013 Winter school Lectures: http://www.youtube.com/playlist?list=PLXF_IJaFk-9C4p3b2tK7H9a9axOm3EtjA&feature=mh_lolz Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 1531 barilanuniversity
Lecture 63 - What is Telnet protocol? | Explanation of Telnet Protocol [Hindi/Urdu]
 
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This video is an explanation of telnet protocol. Below points are explained in this video: - Why do we need telnet? - What is telnet? - Explanation of telnet protocol. - Telnet client and Telnet Server. - Properties of telnet protocol. #ComputerBasics ---- Computer Science Gurukul channel is a step towards computer science education to spread its importance among students, professional and technology enthusiastic people. This channel will always work to provide pure computer science knowledge in the Hindi language. The goal of this channel is to help “No-Degree Software Professional” and Kids programmer. Facebook: https://www.facebook.com/computersciencegurukul YouTube: https://www.youtube.com/c/computersciencegurukul
ZK-LND 0x01: Designing efficient R1CS circuits - Daira Hopwood
 
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Designing efficient R1CS circuits To correctly and efficiently express statements for many popular zero-knowledge argument systems, we need to understand Rank 1 Constraint Systems. This talk is based on Daira's experience optimizing the circuits for Zcash's Sapling protocol upgrade. It aims to teach some of the background needed to: * design higher-level cryptographic protocols with efficient R1CS implementation in mind, * specify a statement precisely enough to be able to tell whether it has been correctly implemented; * understand the R1CS model of computation; * express various algorithms and types commonly used in cryptography; * optimize circuit size while reducing the risk of introducing bugs and vulnerabilities. Daira will concentrate on direct expression of circuits as R1CS, rather than how this would be written in a particular domain-specific language or library. Bio: Daira is an engineer, protocol designer and founding member of Zcash, a privacy-preserving digital currency built with zero-knowledge cryptography. Zcash recently underwent a network upgrade called Sapling which introduced new shielded addresses with significantly improved performance: a time reduction of 90% for constructing transactions and a memory reduction of over 97%. Daira is responsible for many of the circuit optimizations that allowed the improvements of Zcash in the Sapling network upgrade, as well as a substantial part of the cryptographic design to support new features such as shielded payments using hardware wallets. We are very honored to have such an expert with us for our first meetup in London! Read more about Daira: https://z.cash/blog/people-behind-zcash-technology-daira-hopwood-engineer-and-protocol-designer/ Read more about ZCash: https://z.cash/the-basics/ The slides are available on the Facebook group: https://www.facebook.com/groups/800441673459620/
Views: 244 Zero Knowledge
Virus, Worms and Trojan Horses Brief Introduction and Difference between their Functionality
 
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Virus, Worms and Trojan Horses Brief Introduction and Difference between their Functionality Keywords: Virus Worms Trojan Horses Network Security Notes
Java Cryptography Tutorials 1 AES Encryption and Decryption using Java
 
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Dear Viewer, thanks for watching this video i will be more happy and pleased if you subscribe my channel and hit like its is my request please do subscribe and hit like and leave comments for further improvements and please give any suggestion for the video i will try to improve it next video. java cryptography extension, password encryption in java, bouncy castle java, java encrypt and decrypt file, java aes encryption, java rsa, aes encryption explained, symmetric encryption, rsa encryption, aes encryption, des encryption, tripple des encryption, idea encryption, elgamal encryption Cryptography: ------------- Cryptography or cryptology is the practice and study of techniques for secure communication in the presence of third parties called adversaries. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages; various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation are central to modern cryptography. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, electrical engineering, communication science, and physics. Applications of cryptography include electronic commerce, chip-based payment cards, digital currencies, computer passwords, and military communications. Cryptography prior to the modern age was effectively synonymous with encryption, the conversion of information from a readable state to apparent nonsense. The originator of an encrypted message shares the decoding technique only with intended recipients to preclude access from adversaries. The cryptography literature often uses the names Alice ("A") for the sender, Bob ("B") for the intended recipient, and Eve ("eavesdropper") for the adversary.[5] Since the development of rotor cipher machines in World War I and the advent of computers in World War II, the methods used to carry out cryptology have become increasingly complex and its application more widespread. AES Algorithm: -------------- The Advanced Encryption Standard, or AES, is a symmetric block cipher chosen by the U.S. government to protect classified information and is implemented in software and hardware throughout the world to encrypt sensitive data. The Advanced Encryption Standard, also known by its original name Rijndael, is a specification for the encryption of electronic data established by the U.S. National Institute of Standards and Technology in 2001 ----------------------Java Cryptography More Videos--------------------------- 1. AES Encryption and Decryption : https://youtu.be/uxyGJMBs2dI 2. DES Encryption and Decryption : https://youtu.be/3gUV_1rQqfQ 3. RSA Encryption and Decryption : https://youtu.be/uMOq4-s7Ivg 4. MD5 Secure Hashing : https://youtu.be/cBWm-W-ebGs Java: ----- Java is a general-purpose programming language that is class-based, object-oriented, and designed to have as few implementation dependencies as possible. Java is platform Independent language and it is mainly designed for Internet programming, It comes with 3 products mainly --------------------Watch My Projects Videos----------------- 1. Java Login System: https://www.youtube.com/watch?v=g3Z7oyyouk8 2. Text Classification using Java : https://youtu.be/Ju9jLHMfxaM 3. Packet Filtering Firewall: https://youtu.be/xVMumX0_2OM 4. Naive Bayes Classifier: https://youtu.be/Ju9jLHMfxaM 5. Tesseract Engine OCR Project : https://youtu.be/_sHMoXSpocw 6. Honeypot Project : https://youtu.be/_4yKt7PbpRY 7. Animal Detection using Java Opencv : https://youtu.be/StnYuUKGD2g 8. 3D Password Protection using Java : https://youtu.be/Y_8ETepTDdY 9. Iris Recognition System using Java: https://youtu.be/gwtgbtka-74 10. Intrusion Detection System using Java : https://youtu.be/4fNknjrr9cY 11. Attendance Management System : https://youtu.be/ayfLfVktSSA 12. Secured Data Sharing over network (creating Protocol) : https://youtu.be/YTKwDGetg8E 13. Voice to Text Project in Java : https://youtu.be/L5NMT6CXfO4 14. Secured Authentication using Virtual Environment in Java : https://youtu.be/P2KcRvluaNI 15. DSR Protocol Implementation using Java : https://youtu.be/O0h5UGNgFnQ 16. RSA Secured Chatting System : https://youtu.be/7YXzVNQG2Y0 17. LAN monitoring System using Java: https://youtu.be/MvGo0g2SvrM 18. Suspecious Email Detection System using J2EE : https://youtu.be/o64mA3I75A4 19. Secured Chatting System using RSA and DES algorithms: https://youtu.be/XSnJSVfLlpo 20. OCR Project Extract Text from Image: https://youtu.be/DLt8v_E22rE 21. Client Server Chatting using AES Algorithm: https://youtu.be/trezRWzfM50 22. Emmergency Responder Project in Android : https://youtu.be/fr4R0l_b9kY 23. Library Management System using Java: https://youtu.be/z835b61QeFg #java, #cryptography, #aes
Views: 54480 Krish
Onion Routing - 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: 7328 Udacity
What is Cryptography
 
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www.hiteshChoudhary.com www.newdemy.com What is Cryptography? Cryptography is a very interesting science of information security. The word Cryptography is derived from Greek kryptos, meaning hidden. Cryptography is not alone word or one word for all related information security science. Words like cryptanalysis, cipher and cryptology are always included in this science. Cryptography includes techniques such as microdots, merging words with images, and other ways to hide information in storage or transit. However, in today's computer-centric world, cryptography is most often associated with scrambling plaintext (ordinary text, sometimes referred to as clear text) into cipher text (unreadable text obtained after a process called encryption), then back again (known as decryption). Individuals who practice this field are known as cryptographers. There is also a word, Cryptosystem that you will see a lot in this video course. Procedures and protocols that are used in cryptography makes up a system that is known as cryptosystem. Cryptosystem are mostly referred as computer programs or protocols but I would like it to extend to a much wider plot. It also include human behavior as social engineering is still one of the fastest technique to compromise a system or application. Things like choosing typical password, logging off unused systems, protecting sensitive files also plays a vital role in cryptosystem. Although, it is considered that 1st use of modern cryptography was by Julius Caesar, who did not trust his messenger when communicating with his governors. But I think the need of encryption came in high demand after the invention of radio as one can tune into your frequency range and intercept your message. But if the transmission is encrypted then things get changed. In recent times, cryptography has turned into a battleground of some of the world's best mathematicians and computer scientists. The ability to securely store and transfer sensitive information has proved a critical factor in success in war and business. To understand more about cryptography, let’s call our friends Alice and Bob. Now Alice wants to transfer some information to Bob but wants to do it securely. Alice decided that instead of transferring information in clear text form, I’ll encrypt this text with some algorithm and key. Then I’ll pass this cipher text. Now bob should also have the key and decryption algorithm to read the information. The two major problems are secure transfer of key and knowledge about algorithm. Things like degree of complexity of algorithm and its randomness also plays a vital role in cryptography. This course is going to be a detailed overview about all these things.
Views: 3981 Hitesh Choudhary
Ever Wonder What The 'Crypto' Part Of 'Cryptocurrency' Really Means? It Also Secures Bitcoin
 
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This is a free sample lesson from 'How To Confidently Join The Digital Money Revolution - Master the basics of Bitcoin and own a stake in the future of money'. This is an online course available through Cryptoversity.com. You can sign up for the full course at: https://www.cryptoversity.com/courses/the-digital-money-revolution/ What is Cryptography? Digital Money Revolution Bitcoin is... An open source software protocol which enables a blockchain to be built on a trustless peer to peer decentralised network via the Internet, which can be used to host a public database which tracks changes in ownership of assets and is secured by cryptography and consensus. A bitcoin is... A unit of digital currency that exists on the Bitcoin blockchain, is stored in a wallet and can be used to track the exchange of value in a free market economy. Digital Money Revolution - What is Cryptography? Think about Pig Latin... Typically used by children to communicate with their brothers and sisters without their parents being able to understand. A way of communicating in secret by converting the message into a secret format It’s a way of making a message appear meaningless unless you know how to interpret it Digital Money Revolution - What is Cryptography? Pig Latin Rules... Take the first consonant (or consonant cluster) of an English word, move it to the end of the word and add ‘ay’ So ‘pig’ becomes ‘igpay’ If a word begins with a vowel you just add ‘way’ to the end So ‘apple’ becomes ‘appleway’ Digital Money Revolution - What is Cryptography? An Example Ellohay ymay amenay isway ischray andway elcomeway otay ethay igitalday oneymay evolutionray. Digital Money Revolution - What is Cryptography? Hello my name is Chris and welcome to the Digital Money Revolution. The Pig Latin rules are called the encryption key. Summary Encryption is used to scramble a message so that it looks meaningless while it’s travelling Unless you know the encryption key there’s no way to know what the original message was You may not even know what format the original message was in (numbers, images, words, language) These elements may not even be included in the encrypted message If the type of encryption became less secure (say because of new computer technology), Bitcoin is open source Hence a newer type of encryption (maybe one that hasn’t even been invented yet) could be proposed, agreed on and implemented
Views: 1883 The Cryptoverse
Protocol Composition Logics
 
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The design and analysis of network protocols that use cryptographic primitives is one of the most fundamental and challenging areas of security research. In this talk, I will present logical methods for protocol analysis that address two central problems in this area. The first is compositionality, where the goal is to develop methods for proving correctness of compound protocols by combining independent proofs of their components. Protocol Composition Logic (PCL) is a Floyd-Hoare style logic that supports axiomatic proofs of protocol properties. Protocol proofs in PCL are compositional and follow the designer intuition when constructing protocols using standard components. The second research goal is to develop symbolic methods for protocol analysis while being faithful to the complexity-theoretic model of modern cryptography. Our first result here is Computational PCL - a symbolic logic with syntax and proof system similar to PCL. However, the semantics of CPCL is defined with respect to the complexity-theoretic model of cryptography. These methods have been successfully applied to a number of network security protocols including the IEEE 802.11i wireless authentication protocol, IPSec's new key exchange protocol IKEv2, and SSL/TLS.
Views: 126 Microsoft Research
35C3 -  No evidence of communication and morality in protocols: Off-the-Record protocol version 4
 
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https://media.ccc.de/v/35c3-9596-no_evidence_of_communication_and_morality_in_protocols_off-the-record_protocol_version_4 OTRv4 is the newest version of the Off-The-Record protocol. It is a protocol where the newest academic research intertwines with real-world implementations. It is also one of the first protocols that comes from the global south which makes the political discussion around protocols an urgency. This newest versions also asks us to revisit our definitions around deniability (online and offline) and how important is it to the world. In this talk we will try to start a discussion around the importance of protocols, its political/moral foundations, the real-world implementation of academic ideas, the importance of securely implementing them, the definition of deniability in the current world and the design of OTRv4. As we know from past revelations, the Internet has become a place where any action is surveilled and recorded. In the light of this, the OTR protocol was created. But it was created long time ago. In the past years, there have been a increased work on cryptographic primitives, and privacy and security notions. But these thoughts have not been incorporated into projects. OTRv4 is the newest version of the Off-The-Record protocol, which tries to incorporate these new ideas. At the same time, OTRv4 is a protocol that challenges the common thinking around protocols as it comes from the global south, and takes moral questions into its design, as Rogaway tried to defined on his "The Moral Character of Cryptographic Work?" paper. Furthermore, OTRv4 tries to update the notion of deniability and why it is important for the world. Sofia Celi Jurre van Bergen https://fahrplan.events.ccc.de/congress/2018/Fahrplan/events/9596.html
Views: 1055 media.ccc.de
CppCon 2018: “Multi-Precision Arithmetic for Cryptology in C++, at Run-Time and at Compile-Time”
 
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http://CppCon.org Niek J. Bouman “Multi-Precision Arithmetic for Cryptology in C++, at Run-Time and at Compile-Time” — Presentation Slides, PDFs, Source Code and other presenter materials are available at: https://github.com/CppCon/CppCon2018 — In the talk, I will present a new C++17 library for multi-precision arithmetic for integers in the order of 100--500 bits. Many cryptographic schemes and applications, like elliptic-curve encryption schemes and secure multiparty computation frameworks require multiprecision arithmetic with integers whose bit-lengths lie in that range. The library is written in “optimizing-compiler-friendly” C++, with an emphasis on the use of fixed-size arrays and particular function-argument-passing styles (including the avoidance of naked pointers) to allow the limbs to be allocated on the stack or even in registers. Depending on the particular functionality, we get close to, or significantly beat the performance of existing libraries for multiprecision arithmetic that employ hand-optimized assembly code. Beyond the favorable runtime performance, our library is, to the best of the author’s knowledge, the first library that offers big-integer computations during compile-time. For example, when implementing finite-field arithmetic with a fixed modulus, this feature enables the automatic precomputation (at compile time) of the special modulus- dependent constants required for Barrett and Montgomery reduction. Another application is to parse (at compile-time) a base-10-encoded big-integer literal. In this talk, I will focus on some Modern C++ language features that I've used to write the library and design its API (e.g., std::array, variadic templates, std::integer_sequence, constexpr, user-defined literals, using-declarations and decltype, and combinations thereof). Also, I will show some benchmarks, and will argue that the integer types offered by the library compose well with STL containers or other libraries (like Eigen for matrix/linear algebra operations). I will also present some results on formal verification of correctness and the "constant-time" property: - Correctness is verified using a tool named SAW (Software Analysis Workbench), which tries to prove equivalence between the compiled C++ code (represented as LLVM bitcode) and a behavioral specification given in a high-level functional language; - "Constant-timeness" is a property that is crucial for implementations of cryptographic protocols to prevent timing attacks. In particular, I succeeded to verify my C++ code with "ct-verif", a tool for verifying the constant-time property for C programs (which was, in its original form, incompatible with C++ due to usage of non-ANSI C in one of its header files) The library is on Github (Apache 2 licensed) https://github.com/niekbouman/ctbignum — Niek J. Bouman, Eindhoven University of Technology Researcher Secure Multiparty Computation 2017 - now Postdoc TU/e SODA (Scalable Oblivious Data Mining) project, Eindhoven University of Technology, the Netherlands 2016-2017 Senior Researcher Fraud Detection @ ABN AMRO Bank, Amsterdam, the Netherlands 2014-2016 Postdoc at Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland PhD (2012) Quantum Cryptography/Quantum Information Theory from CWI/Universiteit Leiden, the Netherlands BS'05 MS’07 Electrical Engineering from Universiteit Twente, Enschede, the Netherlands — Videos Filmed & Edited by Bash Films: http://www.BashFilms.com
Views: 1768 CppCon
Explaining the Diffie-Hellman Key Exchange
 
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The Diffie-Hellman key exchange is used extensively in Internet communications today. Many web applications use this key exchange because it achieves Perfect Forward Secrecy (using ephemeral keys) which provides more security than other key exchange algorithms like RSA. In this video, John explains the Diffie-Hellman key exchange, and he walks through an example of the calculations used to make it all work. https://devcentral.f5.com/articles/lightboard-lessons-explaining-the-diffie-hellman-key-exchange-31674
Views: 9375 F5 DevCentral
What Are Zero Knowledge Proofs?
 
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Hey there guys! Today we've got an especially useful class. When talking about privacy in cryptocurrency, Zero Knowledge Proofs come up a lot. Weirdly though, not a lot of people can describe them. So today, we challenge that with a super easy analogy. As always, comment below if something doesn't make sense! Sources: https://blog.cryptographyengineering.com/2014/11/27/zero-knowledge-proofs-illustrated-primer/ https://en.wikipedia.org/wiki/Zero-knowledge_proof https://en.wikipedia.org/wiki/Zerocoin @Presstab Thank you to the PIVX community for your ongoing support. Special thanks to Veramis for his script editing work and to Hanna for leading the translation efforts. You both rock! Discord: https://discordapp.com/invite/jzqVsJd Twitter: https://twitter.com/_pivx Reddit: https://www.reddit.com/r/pivx/ Facebook: https://www.facebook.com/PIVXCrypto/ Instagram: https://www.instagram.com/pivxcrypto/ Pinterest: https://www.pinterest.ca/pivxorg/ PIVXfans: https://pivxfans.fancorps.com/ Steemit: https://steemit.com/@pivx/ Source: https://www.reddit.com/r/pivx/wiki/coin_supply DISCLAIMER: This channel is funded by the PIVX DAO's budget system. Every month it is voted in to be funded an amount that can be viewed on our proposal tracking sites. I make no attempts to hide this and I do my best to be un-bias in non-opinion segments.
Views: 7910 PIVX Class
Cryptographic Attacks - CompTIA Security+ SY0-501 - 1.2
 
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Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Frequently Asked Questions: http://professormesser.link/faq - - - - - If you can’t hack the user, you may be able to hack the cryptography. In this video, you’ll learn about some common cryptographic attacks. - - - - - Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ 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: 64608 Professor Messer
security specialist jobs (IT Security and Network Engineer)
 
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Security Specialist Location Sacramento CA Duration 6 months /Contract Contact: Talent Anytime Inc. 41041 Trimboli way suite 1398 Fremont CA 94538 CA 94539 Contact# : 510-722-8503 x 533 Direct : 510-455-8178 JOB DESCRIPTION Mode of interview: Phone and Skype Visa: USC/GC/EAD/OPT/TN The Security Specialist safeguards information system assets by identifying and solving potential and actual security problems. Main Responsibilities for Security Specialist Analyze and establish security requirements for your systems/networks Defend systems against unauthorized access, modification and/or destruction Configure and support security tools such as firewalls, anti-virus software, patch management systems, etc. Define access privileges, control structures and resources Perform vulnerability testing, risk analyses and security assessments Identify abnormalities and report violations Oversee and monitor routine security administration Develop and update business continuity and disaster recovery protocols Train fellow employees in security awareness, protocols and procedures Design and conduct security audits to ensure operational security Respond immediately to security incidents and provide post-incident analysis Research and recommend security upgrades Provide technical advice to colleagues Familiarity skills are preferred (e.g. knowledge of C, C++, C#, Java or PHP programming languages) Familiarity with security frameworks (e.g. NIST Cybersecurity framework) and risk management methodologies PCI, HIPAA, NIST, GLBA and SOX compliance assessments Knowledge of patch management, firewalls and intrusion detection/prevention systems (e.g. TippingPoint) Familiarity with public key infrastructure (PKI) and cryptographic protocols (e.g. SSL/ TLS) IDS/IPS, penetration and vulnerability testing TCP/IP, computer networking, routing and switching DLP, anti-virus and anti-malware Firewall and intrusion detection/prevention protocols Secure coding practices, ethical hacking and threat modeling Windows, UNIX and Linux operating systems Outstanding communication and organization skills BSc/BA in Computer Science, Information Technology or a related field; professional certification (e.g. CompTIA Security+, CISSP) is a plus Technical Skills and Requirements for Security Specialist Familiarity skills are preferred (e.g. knowledge of C, C++, C#, Java or PHP programming languages) Familiarity with security frameworks (e.g. NIST Cybersecurity framework) and risk management methodologies PCI, HIPAA, NIST, GLBA and SOX compliance assessments Knowledge of patch management, firewalls and intrusion detection/prevention systems (e.g. TippingPoint) Familiarity with public key infrastructure (PKI) and cryptographic protocols (e.g. SSL/ TLS) IDS/IPS, penetration and vulnerability testing TCP/IP, computer networking, routing and switching DLP, anti-virus and anti-malware Firewall and intrusion detection/prevention protocols Secure coding practices, ethical hacking and threat modeling Windows, UNIX and Linux operating systems Outstanding communication and organization skills BSc/BA in Computer Science, Information Technology or a related field; professional certification (e.g. CompTIA Security+, CISSP) is a plus
Views: 933 ConvoCourses
How does a blockchain work - Simply Explained
 
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What is a blockchain and how do they work? I'll explain why blockchains are so special in simple and plain English! 💰 Want to buy Bitcoin or Ethereum? Buy for $100 and get $10 free (through my affiliate link): https://www.coinbase.com/join/59284524822a3d0b19e11134 📚 Sources can be found on my website: https://www.savjee.be/videos/simply-explained/how-does-a-blockchain-work/ 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be ✉️ Subscribe to newsletter: https://goo.gl/nueDfz 👍🏻 Like my Facebook page: https://www.facebook.com/savjee
Views: 3108764 Simply Explained - Savjee
GopherCon 2018: Filippo Valsorda- Asynchronous Networking Patterns
 
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Go is the language of API servers, of protocols and of network daemons. And while sometimes the standard library provides all the abstractions we need, that means interacting with net.Conn. Thanks to the freedom of blocking goroutines, Go developed its own patterns in interacting with asynchronous networking. In Filippo’s tutorial session, he will go over some of the most common, useful or tricky patterns, with examples from the standard library and other popular projects. First, he will look at the basic interaction of goroutines with net.Listener, the accept loop, and spawning servicing goroutines. Next, Filippo will focus on how to manage and schedule resources. Finally, he will look at how to test, benchmark, and extend net.Conn implementations by wrapping them. By the end, this session should give you an understanding of what is going on in packages like net/http and crypto/tls, or what you need to keep in mind while developing network protocol implementations.
Views: 6904 Gopher Academy
#1 Security Protocol | Network Security | Lecture 1 in Urdu/Hindi
 
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What is Network security? What are security Protocol? Why we use Security Protocol in the Network?
Views: 273 Focus Group
Wireless communication Lecture - -  IEEE 802.11 Architecture | Services (Eng-Hindi)
 
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-~-~~-~~~-~~-~- Please watch: "PL vs FOL | Artificial Intelligence | (Eng-Hindi) | #3" https://www.youtube.com/watch?v=GS3HKR6CV8E -~-~~-~~~-~~-~-
Views: 150808 Well Academy
John Launchbury, Cryptol in Future Cryptographic Evaluations (February 16, 2006)
 
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From the CISR video library (http://www.cisr.us) John Launchbury, Ph.D., President and CEO, Galois Connections Inc. Cryptol in Future Cryptographic Evaluations February 16, 2006 at the Naval Postgraduate School (http://www.nps.edu) ABSTRACT With growing demand, the next generation of cryptographic devices is required to be programmable and to attain throughput speeds of many gigabits per second. Devices that meet both of these requirements threaten to stress the evaluation process to breaking point. Working through Galois, the NSA is pursuing a fresh approach to the cryptographic evaluation problem by developing tools based around Cryptol, a formal cryptography specification language. The tools provide capabilities to generate FPGA implementations automatically from high level mathematical specifications, to generate test vectors and other aids for human developers, and to verify implementations formally against their specifications. This talk will explore the world of Cryptol, and provide insights into how formal techniques can be packaged to make them fully available to non-specialists. Bio: John Launchbury founded Galois in 1999 to address challenges in Information Assurance through the application of Functional Programming and Formal Methods. The company has grown through successes on multiple contract awards for U.S. Government customers, and gained stature for its advanced technology development. John received First Class Honours in Mathematics from Oxford University in 1985. His Ph.D. in Computing Science won the British Computer Society's distinguished dissertation prize. John retains status as a full professor of Computer Science and Engineering, currently on extended entrepreneurial leave from the OGI School of Science and Engineering at OHSU. John's teaching style has earned him awards for outstanding teaching at OGI, and his work on Haskell and on the semantics of programming languages is internationally recognized.
Views: 515 securitylectures
Java Cryptography Tutorials  6 AES Encryption and Decryption in Java
 
01:28
Dear Viewer, thanks for watching this video i will be more happy and pleased if you subscribe my channel and hit like its is my request please do subscribe and hit like and leave comments for further improvements and please give any suggestion for the video i will try to improve it next video. Cryptography: ------------- Cryptography or cryptology is the practice and study of techniques for secure communication in the presence of third parties called adversaries. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages; various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation are central to modern cryptography. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, electrical engineering, communication science, and physics. Applications of cryptography include electronic commerce, chip-based payment cards, digital currencies, computer passwords, and military communications. Cryptography prior to the modern age was effectively synonymous with encryption, the conversion of information from a readable state to apparent nonsense. The originator of an encrypted message shares the decoding technique only with intended recipients to preclude access from adversaries. The cryptography literature often uses the names Alice ("A") for the sender, Bob ("B") for the intended recipient, and Eve ("eavesdropper") for the adversary.[5] Since the development of rotor cipher machines in World War I and the advent of computers in World War II, the methods used to carry out cryptology have become increasingly complex and its application more widespread. AES Algorithm: -------------- The Advanced Encryption Standard, or AES, is a symmetric block cipher chosen by the U.S. government to protect classified information and is implemented in software and hardware throughout the world to encrypt sensitive data. The Advanced Encryption Standard, also known by its original name Rijndael, is a specification for the encryption of electronic data established by the U.S. National Institute of Standards and Technology in 2001 ----------------------Java Cryptography More Videos--------------------------- 1. AES Encryption and Decryption : https://youtu.be/uxyGJMBs2dI 2. DES Encryption and Decryption : https://youtu.be/3gUV_1rQqfQ 3. RSA Encryption and Decryption : https://youtu.be/uMOq4-s7Ivg 4. MD5 Secure Hashing : https://youtu.be/cBWm-W-ebGs Java: ----- Java is a general-purpose programming language that is class-based, object-oriented, and designed to have as few implementation dependencies as possible. Java is platform Independent language and it is mainly designed for Internet programming, It comes with 3 products mainly --------------------Watch My Projects Videos----------------- 1. Java Login System: https://www.youtube.com/watch?v=g3Z7oyyouk8 2. Text Classification using Java : https://youtu.be/Ju9jLHMfxaM 3. Packet Filtering Firewall: https://youtu.be/xVMumX0_2OM 4. Naive Bayes Classifier: https://youtu.be/Ju9jLHMfxaM 5. Tesseract Engine OCR Project : https://youtu.be/_sHMoXSpocw 6. Honeypot Project : https://youtu.be/_4yKt7PbpRY 7. Animal Detection using Java Opencv : https://youtu.be/StnYuUKGD2g 8. 3D Password Protection using Java : https://youtu.be/Y_8ETepTDdY 9. Iris Recognition System using Java: https://youtu.be/gwtgbtka-74 10. Intrusion Detection System using Java : https://youtu.be/4fNknjrr9cY 11. Attendance Management System : https://youtu.be/ayfLfVktSSA 12. Secured Data Sharing over network (creating Protocol) : https://youtu.be/YTKwDGetg8E 13. Voice to Text Project in Java : https://youtu.be/L5NMT6CXfO4 14. Secured Authentication using Virtual Environment in Java : https://youtu.be/P2KcRvluaNI 15. DSR Protocol Implementation using Java : https://youtu.be/O0h5UGNgFnQ 16. RSA Secured Chatting System : https://youtu.be/7YXzVNQG2Y0 17. LAN monitoring System using Java: https://youtu.be/MvGo0g2SvrM 18. Suspecious Email Detection System using J2EE : https://youtu.be/o64mA3I75A4 19. Secured Chatting System using RSA and DES algorithms: https://youtu.be/XSnJSVfLlpo 20. OCR Project Extract Text from Image: https://youtu.be/DLt8v_E22rE 21. Client Server Chatting using AES Algorithm: https://youtu.be/trezRWzfM50 22. Emmergency Responder Project in Android : https://youtu.be/fr4R0l_b9kY 23. Library Management System using Java: https://youtu.be/z835b61QeFg #java, #cryptography, #aes
Views: 46 Krish
OSI Model (OSI Reference Model) : The 7 Layers Explained
 
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Enroll to Full Course: https://goo.gl/liK0Oq The "OSI Model" also known as "OSI Reference Model" is discussed here in 2 parts: a) Understanding OSI Reference Model b) OSI Model layers a) Understanding OSI Model (00:22): http://youtu.be/p7UR7Nipqcs?t=22s The OSI reference model is one such communication model. OSI stands for "Open Systems Interconnection" which means that every system participating in this model is open for communication with other systems. This model was first defined by an organization called as ISO. The OSI model divides the communication into 7 layers. b) OSI Model layers (2:15) : http://youtu.be/p7UR7Nipqcs?t=2m15s Quick Look of the 7 layers of the OSI reference Model: 7) Application Layer is where the users interact with applications to provide data 6) Presentation Layer is concerned with the format of data exchanged between the end systems 5) Session Layer allows users on different machines to create sessions between them 4) Transport Layer is concerned with end to end communication of messages 3) Network Layer is concerned with routing of packets to correct destination 2) Data Link Layer is concerned with transmission of error free data in the form of Frames 1) Physical Layer is concerned about transmission of raw bits over the communication link Search Terms: OSI Model, OSI layers, OSI Model Layers, OSI 7 Layers, Network Layer, 7 Layers of OSI model, OSI network Model, what is osi model, OSI system, OSI Reference Model, ISO OSI Model, OSI Model layers, video URL : https://www.youtube.com/watch?v=p7UR7Nipqcs Watch ALL CN VIDEOS: https://www.youtube.com/playlist?list=PL9OIoIp8YySF4mkIihOb_j2HZIRIlYuEx For more, visit http://www.udemy.com/u/EngineeringMentor Facebook: https://www.facebook.com/SkillGurukul Twitter : https://twitter.com/Engi_Mentor
Views: 678511 Skill Gurukul
Lecture 64 - What is internet relay chat(IRC)? | Explanation of chatting [Hindi/Urdu]
 
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This video is an explanation of internet relay chat. Below points are explained in this video: - What is chatting? - What is the chat program? - What is internet relay chat?. - IRC Architecture. - Properties internet relay chat. #ComputerBasics ---- Computer Science Gurukul channel is a step towards computer science education to spread its importance among students, professional and technology enthusiastic people. This channel will always work to provide pure computer science knowledge in the Hindi language. The goal of this channel is to help “No-Degree Software Professional” and Kids programmer. Facebook: https://www.facebook.com/computersciencegurukul YouTube: https://www.youtube.com/c/computersciencegurukul
What is Firewall? Good or Bad? Explained in Detail - Genuine Lecture INFORMATION ASSISTANT EXAM
 
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Views: 80335 IT EXAM GURU JI
SNMP (Simple Network Management Protocol) in Network Management | HINDI / ENGLISH
 
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Welcome to TECHNICAL SUPPORT BY RAHUL SAHANI ===================================================== here is the network management book link total snmp book link seen below https://amzn.to/2rKm3iM https://amzn.to/2rJqAS0 All about technical concepts, technical subject , and mobile application. ------------------------------------------------------------------------------------------------- For more videos please | LIKE , SUBSCRIBE, SHARE, COMMENT |
Views: 54609 Youth Tak
Theory and Practice of Cryptography
 
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Google Tech Talks December, 19 2007 Topics include: Introduction to Modern Cryptography, Using Cryptography in Practice and at Google, Proofs of Security and Security Definitions and A Special Topic in Cryptography This talk is one in a series hosted by Google University: Wednesdays, 11/28/07 - 12/19/07 from 1-2pm Speaker: Steve Weis Steve Weis received his PhD from the Cryptography and Information Security group at MIT, where he was advised by Ron Rivest. He is a member of Google's Applied Security (AppSec) team and is the technical lead for Google's internal cryptographic library, KeyMaster.
Views: 70453 GoogleTechTalks
What is Secure Shell ? | SSH Explained in Hindi
 
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Namaskar Dosto !! Is video me main aapko ssh ke bare me bataunga ki ye kya hota hai aur iska istemaal kyu kiya jata hai. aasha karta hu aapko ye video pasand ayegi. is video ko like kare aur apne dosto ke sath share kare. Subscribe to my channel for more videos like this and to support my efforts. Thanks and Love #TechnicalSagar LIKE | COMMENT | SHARE | SUBSCRIBE ---------------------------------------------------------------------------------- For all updates : LIKE My Facebook Page https://www.facebook.com/technicalsagarindia Follow Me on Twitter : http://www.twitter.com/iamasagar Follow Abhishek Sagar on Instagram: theabhisheksagar
Views: 28754 Technical Sagar
Cryptography with Alice and Bob
 
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Public key cryptography, and establishing a secure channel, explained using physical means. Note: this is the first teaching video i've put together that was entirely recorded and edited on my phone so it's a bit rough around the edges, but I think it works.
Views: 3169 hannah dee
Zerocoin: Anonymous Distributed E-Cash from Bitcoin
 
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Bitcoin is the first e-cash system to see widespread adoption. While Bitcoin offers the potential for new types of financial interaction, it has significant limitations regarding privacy. Specifically, because the Bitcoin transaction log is completely public, users� privacy is protected only through the use of pseudonyms. In this talk we discuss Zerocoin, a cryptographic extension to Bitcoin that augments the protocol to allow for fully anonymous currency transactions. Our system uses standard cryptographic assumptions and does not introduce new trusted parties or otherwise change the security model of Bitcoin. We detail Zerocoin�s cryptographic construction, its integration into Bitcoin, and examine its performance both in terms of computation and impact on the Bitcoin protocol.
Views: 4836 Microsoft Research