Search results “Explain elliptic curve cryptography with example describe”

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: 184797
F5 DevCentral

A short video I put together that describes the basics of the Elliptic Curve Diffie-Hellman protocol for key exchanges.

Views: 123333
Robert Pierce

Learn more advanced front-end and full-stack development at: https://www.fullstackacademy.com
Elliptic Curve Cryptography (ECC) is a type of public key cryptography that relies on the math of both elliptic curves as well as number theory. This technique can be used to create smaller, faster, and more efficient cryptographic keys. In this Elliptic Curve Cryptography tutorial, we build off of the Diffie-Hellman encryption scheme and show how we can change the Diffie-Hellman procedure with elliptic curve equations.
Watch this video to learn:
- The basics of Elliptic Curve Cryptography
- Why Elliptic Curve Cryptography is an important trend
- A comparison between Elliptic Curve Cryptography and the Diffie-Hellman Key Exchange

Views: 25170
Fullstack Academy

Learn more advanced front-end and full-stack development at: https://www.fullstackacademy.com
Elliptic Curve Cryptography (ECC) is a type of public key cryptography that relies on the math of both elliptic curves as well as number theory. This technique can be used to create smaller, faster, and more efficient cryptographic keys. In this Elliptic Curve Cryptography tutorial, we introduce the mathematical structure behind this new algorithm.
Watch this video to learn:
- What Elliptic Curve Cryptography is
- The advantages of Elliptic Curve Cryptography vs. old algorithms
- An example of Elliptic Curve Cryptography

Views: 13426
Fullstack Academy

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: 31297
nptelhrd

Demonstration of Elliptic Curve Diffie-Hellman key exchange described in article https://trustica.cz/2018/05/17/elliptic-curve-diffie-hellman-key-exchange/ shows the calculation of public points and shared secret on elliptic curve in simple Weierstrass form y²=x³-2x+15 over GF(23). Starring Alice and Bob - since 1978. Consider subscribing to our YouTube channel to see some interesting cryptography-related videos in the future and maybe follow us on Twitter https://twitter.com/trusticacz as well!

Views: 511
Trustica

The definition of the word Elliptical. We strive to define all words in our book... Words Defined.

Views: 264
WordsDefined

This video is an explanation following the paper Dual EC: A Standardized Backdoor by Daniel J. Bernstein, Tanja Lange and Ruben Niederhagen
I have a blog here: www.cryptologie.net
And you should follow me on twitter here: https://twitter.com/lyon01_david

Views: 5078
David Wong

"Lenstra's elliptic curve factorization method," given by Leo Lai on 27th January 2016 as a guest speaker in the Churchill Computer Science Talks Series (http://talks.cam.ac.uk/show/index/63165).
Leo's talk addresses something incredibly important to computer science: computational number theory. Computational number theory has deep links to cryptography and security, and one of the most fundamental problems is the factorization of huge numbers, the subject of this talk.
Abstract:
Integer factorization is an important problem in computational number theory with many applications in cryptography. Elliptic curves, on the other hands, are mathematical objects whose study predates the notion of computation by more than a century. In 1987, Lenstra described a new factoring algorithm using elliptic curves, which is still one of the fastest special purpose factorization algorithms invented so far. Conversely, the desire to rigorously analyze this algorithm has produced new results in number theory. This talk will describe his algorithm. No knowledge beyond basic number theory is required.

Views: 2593
Churchill CompSci Talks

This Algorithm is used to exchange the secret /symmetric key between sender and receiver.
This exchange of key can be done with the help of public key and private key
step 1 Assume prime number p
step 2 Select a such that a is primitive root of p and a less than p
step 3 Assume XA private key of user A
step 4 Calculate YA public key of user A with the help of formula
step 5 Assume XB private key of user B
step 6 Calculate YB public key of user B with the help of formula
step 7 Generate K secret Key using YB and XA with the help of formula at Sender side.
step 8 Generate K secret Key using YA and XB with the help of formula at Receiver side.

Views: 85546
Sundeep Saradhi Kanthety

The history behind public key cryptography & the Diffie-Hellman key exchange algorithm.
We also have a video on RSA here: https://www.youtube.com/watch?v=wXB-V_Keiu8

Views: 644551
Art of the Problem

Twofish is a block cipher by Counterpane Labs, published in 1998. It was one of the five Advanced Encryption Standard (AES) finalists, and was not selected as AES.
Twofish has a 128-bit block size, a key size ranging from 128 to 256 bits, and is optimized for 32-bit CPUs. Currently there is no successful cryptanalysis of Twofish.
https://www.schneier.com/academic/twofish/
This animation is designed by Abdullah AlQahtani
[email protected]

Views: 12116
Hemaya Group

Special thanks to Stitch Fix for hosting this event!
Mini
====
Tyler McMullen on Delta CRDTs
Tyler will do his best to summarize and get you hooked on the three papers listed below:
• https://arxiv.org/pdf/1410.2803.pdf
• https://arxiv.org/pdf/1603.01529.pdf
• http://dl.acm.org/citation.cfm?id=2911163
Tyler's Bio
Tyler McMullen is CTO at Fastly, where he’s responsible for the system architecture and leads the company’s technology vision. As part of the founding team, Tyler built the first versions of Fastly’s Instant Purging system, API, and Real-time Analytics. Before Fastly, Tyler worked on text analysis and recommendations at Scribd. A self-described technology curmudgeon, he has experience in everything from web design to kernel development, and loathes all of it. Especially distributed systems.
Main Talk
====
Kevin Burke on "Curve25519 and fast public key cryptography" ( https://cr.yp.to/ecdh/curve25519-20060209.pdf )
Kevin's Bio
Kevin Burke (https://burke.services) likes building great experiences. He helped scale Twilio and Shyp, and currently runs a software consultancy. Kevin once accidentally left Waiting for Godot at the intermission.

Views: 877
PapersWeLove

Elliptic curve transformation from generic to simplified Weierstrass form using Riemann-Roch theorem applied to algebraic curves as studied by Friedrich Karl Schmidt. For explanation of the math involved, please refer to the original article at https://trustica.cz/en/2018/02/22/introduction-to-elliptic-curves/

Views: 473
Trustica

This tutorial video will help provide an understanding of what block ciphers are, and how they are used in the field of cryptography.

Views: 151095
Ryan Kral

This video describes the key generation for the DSA. An example with artificially small numbers is also given

Views: 8265
Leandro Junes

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!
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Views: 262432
Simply Explained - Savjee

Reference https://8gwifi.org/docs/window-crypto-ecdh.jsp
The Web crypto api describes using Elliptic Curve Diffie-Hellman (ECDH) for key generation and key agreement, as specified by RFC6090.
This is the web cryptography api example of performing ECDH generateKey and derivebits, and then using generate key to encrypt and decrypt the message in AES
web crypto api example
web crypto api example ecdh
javascript web crypto api example ecdh

Views: 123
Zariga Tongy

Views: 121628
B Hariharan

RSA is an extremely popular cryptosystem used to secure Internet communications today. In this video, John describes RSA encryption and shows a real example of how to encrypt and decrypt using RSA.

Views: 12690
F5 DevCentral

This is a segment of this full video:
https://www.youtube.com/watch?v=YEBfamv-_do
Diffie-Hellman key exchange was one of the earliest practical implementations of key exchange within the field of cryptography. It relies on the discrete logarithm problem. This test clip will be part of the final chapter of Gambling with Secrets!

Views: 452965
Art of the Problem

In this video I explained Diffie Hellman Algorithm with solved Numerical problem.
Video is about how two persons can exchange their secret key.
Notes link : https://drive.google.com/file/d/1_T5PVcl5NfR_S9p9MEwD42cS2YqN97FJ/view?usp=drivesdk
If you have any doubts then you can connect me via:
Email : [email protected]
Contact : 7030994979

Views: 10564
Exam Partner

DES algorithm follows the Feistel Structure
Most of the Block cipher algorithms follows Feistel Structure
BLOCK SIZE - 64 bits Plain Text
No. of Rounds - 16 Rounds
Key Size - 64 bits
Sub Key Size - 48 bits
No. of Sub Keys - 16 Sub Keys
Cipher Text - 64 bits

Views: 197213
Sundeep Saradhi Kanthety

A high-level explanation of digital signature schemes, which are a fundamental building block in many cryptographic protocols.
More free lessons at: http://www.khanacademy.org/video?v=Aq3a-_O2NcI
Video by Zulfikar Ramzan. Zulfikar Ramzan is a world-leading expert in computer security and cryptography and is currently the Chief Scientist at Sourcefire. He received his Ph.D. in computer science from MIT.

Views: 142435
Khan Academy

This video describes in detailed the Diffie–Hellman Key Exchange. A proof on why this protocol works is also given.

Views: 1802
Leandro Junes

This talk explains a p-adic Beilinson formula relating the p-adic L-function associated to the Rankin convolution of two cusp forms to so-called Beilinson-Flach elements. It will then describe some applications to new cases of the Birch and Swinnerton-Dyer conjecture for elliptic curves. This is a report on work in progress with Henri Darmon and Victor Rotger.(6.2.2014)

Views: 727
Hausdorff Center for Mathematics

In this video you will learn how to solve knapsack problem in cryptography .. encrytion and decryption of any letter using ASCII value and convert them into binary .. which will make hard of any intruder to decrypt the message
Please subscribe and like video .
Thanks
Visit Our Channel :- https://www.youtube.com/channel/UCxik...
In this lecture we have taught about Knapsack Public Key Cryptography and how to solve it with example.
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Views: 12660
Quick Trixx

The explains that it only takes a group of 23 people to have a 50% chance that two people have the same birthday.
http://mathispower4u.com

Views: 3381
Mathispower4u

Cyber Attack Countermeasures
Module 4 Overview of Public Key Cryptographic Methods
This module introduces the basics of public key cryptography including an overview of SSL and CA applications.
Learning Objectives
• Discuss CBC mode cryptography
• Describe conventional crypto scaling
• Identify the basics of public key cryptography including secrecy and digital signing
• Examine Diffie Hellman Key Exchange and its contributions to security
• Explain key distribution techniques including CA protocols
• Summarize SSL and how it is implemented in browsers
• Examine the history of cryptographic invention in the US and UK
Subscribe at: https://www.coursera.org/learn/intro-cyber-attacks/home/welcome
https://www.coursera.org

Views: 84
intrigano

Adam Petcher, Principal Member of Technical Staff, Oracle
JDK 11 includes support for the first of a new breed of cryptographic algorithm that features improved performance, trustworthiness, and security in cloud and multitenant environments. This session describes the features and implementations of some of these algorithms: X25519 key agreement, Poly1305 authentication, and EdDSA signatures. The presentation focuses on the techniques used to develop high-performance, secure implementations of modern cryptographic algorithms in Java. No knowledge of cryptography is required, and the session should be relevant to anyone who is interested in Java performance.

Views: 426
Oracle Developers

- A brief introduction to Elgamel Encryption
- Explaining Diffie-Hellman Key Exchange
- no details calculations

Views: 5699
c. jian

This video describes the two use cases of RSA asymmetric key algorithm. 1. RSA Encryption and 2. Digital signature.
Its especially intended for new comers in Cryptography to make their concept clear in how RSA can be used to secure the communication over internet.
Both of these cases can also be combined one after another to get both advantages.
Music: Alan Walker - Spectre

Views: 1609
Anum Sheraz

What is RANDOM ORACLE? What does RANDOM ORACLE mean? RANDOM ORACLE meaning - RANDOM ORACLE definition - RANDOM ORACLE explanation.
Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license.
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In cryptography, a random oracle is an oracle (a theoretical black box) that responds to every unique query with a (truly) random response chosen uniformly from its output domain. If a query is repeated it responds the same way every time that query is submitted.
Stated differently, a random oracle is a mathematical function chosen uniformly at random, that is, a function mapping each possible query to a (fixed) random response from its output domain.
Random oracles as a mathematical abstraction were firstly used in rigorous cryptographic proofs in the 1993 publication by Mihir Bellare and Phillip Rogaway (1993). They are typically used when the cryptographic hash functions in the method cannot be proven to possess the mathematical properties required by the proof. A system that is proven secure when every hash function is replaced by a random oracle is described as being secure in the random oracle model, as opposed to secure in the standard model of cryptography.
Random oracles are typically used as an ideal replacement for cryptographic hash functions in schemes where strong randomness assumptions are needed of the hash function's output. Such a proof generally shows that a system or a protocol is secure by showing that an attacker must require impossible behavior from the oracle, or solve some mathematical problem believed hard in order to break it.
Not all uses of cryptographic hash functions require random oracles: schemes that require only one or more properties having a definition in the standard model (such as collision resistance, preimage resistance, second preimage resistance, etc.) can often be proven secure in the standard model (e.g., the Cramer–Shoup cryptosystem).
Random oracles have long been considered in computational complexity theory, and many schemes have been proven secure in the random oracle model, for example Optimal Asymmetric Encryption Padding, RSA-FDH and Probabilistic Signature Scheme. In 1986, Amos Fiat and Adi Shamir showed a major application of random oracles – the removal of interaction from protocols for the creation of signatures.
In 1989, Russell Impagliazzo and Steven Rudich showed the limitation of random oracles – namely that their existence alone is not sufficient for secret-key exchange.
In 1993, Mihir Bellare and Phillip Rogaway were the first to advocate their use in cryptographic constructions. In their definition, the random oracle produces a bit-string of infinite length which can be truncated to the length desired.
According to the Church–Turing thesis, no function computable by a finite algorithm can implement a true random oracle (which by definition requires an infinite description).
In fact, certain artificial signature and encryption schemes are known which are proven secure in the random oracle model, but which are trivially insecure when any real function is substituted for the random oracle. Nonetheless, for any more natural protocol a proof of security in the random oracle model gives very strong evidence of the practical security of the protocol.
In general, if a protocol is proven secure, attacks to that protocol must either be outside what was proven, or break one of the assumptions in the proof; for instance if the proof relies on the hardness of integer factorization, to break this assumption one must discover a fast integer factorization algorithm. Instead, to break the random oracle assumption, one must discover some unknown and undesirable property of the actual hash function; for good hash functions where such properties are believed unlikely, the considered protocol can be considered secure.

Views: 445
The Audiopedia

One-photon based quantum technologies
In this lesson, you will discover two quantum technologies based on one photon sources. Quantum technologies allow one to achieve a goal in a way qualitatively different from a classical technology aiming at the same goal. For instance, quantum cryptography is immune to progress in computers power, while many classical cryptography methods can in principle be broken when we have more powerful computers. Similarly, quantum random number generators yield true random numbers, while classical random number generators only produce pseudo-random numbers, which might be guessed by somebody else than the user. This lesson is also an opportunity to learn two important concepts in quantum information: (i) qubits based on photon polarization; (ii) the celebrated no-cloning theorem, at the root of the security of quantum cryptography.
Learning Objectives
• Apply your knowledge about the behavior of a single photon on a beam splitter to quantum random number generators.
• Understand the no-cloning theorem
• Understand and remember the properties of q qubit
This course gives you access to basic tools and concepts to understand research articles and books on modern quantum optics. You will learn about quantization of light, formalism to describe quantum states of light without any classical analogue, and observables allowing one to demonstrate typical quantum properties of these states. These tools will be applied to the emblematic case of a one-photon wave packet, which behaves both as a particle and a wave. Wave-particle duality is a great quantum mystery in the words of Richard Feynman. You will be able to fully appreciate real experiments demonstrating wave-particle duality for a single photon, and applications to quantum technologies based on single photon sources, which are now commercially available. The tools presented in this course will be widely used in our second quantum optics course, which will present more advanced topics such as entanglement, interaction of quantized light with matter, squeezed light, etc... So if you have a good knowledge in basic quantum mechanics and classical electromagnetism, but always wanted to know: • how to go from classical electromagnetism to quantized radiation, • how the concept of photon emerges, • how a unified formalism is able to describe apparently contradictory behaviors observed in quantum optics labs, • how creative physicists and engineers have invented totally new technologies based on quantum properties of light, then this course is for you.
Subscribe at: https://www.coursera.org

Views: 6238
intrigano

Enterprise and Infrastructure Security
About this course: This course introduces a series of advanced and current topics in cyber security, many of which are especially relevant in modern enterprise and infrastructure settings. The basics of enterprise compliance frameworks are provided with introduction to NIST and PCI. Hybrid cloud architectures are shown to provide an opportunity to fix many of the security weaknesses in modern perimeter local area networks. Emerging security issues in blockchain, blinding algorithms, Internet of Things (IoT), and critical infrastructure protection are also described for learners in the context of cyber risk. Mobile security and cloud security hyper-resilience approaches are also introduced. The course completes with some practical advice for learners on how to plan careers in cyber security.
Module 3 Blockchain, Anonymity, and Critical Infrastructure Protection
Dr. Edward G. Amoroso
This module introduces several advanced topics in cyber security ranging from blockchain usage, user anonymity, and critical infrastructure protection.
Learning Objectives
• Summarize the basics of hash functions and how they generally work
• Explain blockchain, including mining and chaining techniques for integrity
• Explain onion routing and the Tor browser
• Analyze Chaum's binding techniques for anonymity
• Differentiate between critical and non-critical infrastructure for cyber protection
To get certificate subscribe at:
https://www.coursera.org/learn/intro-cyber-attacks/home/welcome
https://www.coursera.org

Views: 36
intrigano

Cryptography and network security goals
This is Part 2 of Cryptography and Network Security.
Watch part 1 here: https://youtu.be/BbeopHawSMc

Views: 246
Peekaboo

This video describes the man-in-the-middle attack on Diffie-Hellman Key Exchange with an Example and how to prevent it using public-key certificate

Views: 15033
Natarajan Meghanathan

RSA Cryptosystem Algorithm (Public Key Algorithm) in Hindi with Example
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Views: 140724
Easy Engineering Classes

John outlines the concept of Perfect Forward Secrecy and describes what it takes to achieve this level of security.

Views: 19928
F5 DevCentral

Reference : https://8gwifi.org/docs/window-crypto-rsapss.jsp
The Web crypto api describes using The RSA-PSS algorithm identifier is used to perform signing and verification using the RSASSA-PSS algorithm specified in [RFC3447], using the SHA hash functions defined in this specification and the mask generation formula MGF1.
The recognized algorithm name for this algorithm is "RSA-PSS".
sign: Perform the signature generation operation
verify: Perform the signature verification operation
importKey EcKeyImportParams Key (spki,jwk,raw,pkcs8)
exportKey None ArrayBuffer
generateKey: Generate an RSA key pair
web crypto api example
web cryptography api browser support
javascript web crypto api example
web crypto api chrome
web crypto sample
web crypto sign example
web crypto polyfill

Views: 198
Zariga Tongy

This video explains how the elgama cryptosystem encryption and decryption is done 😎😎
Visit Our Channel :- https://www.youtube.com/channel/UCxik...
In this lecture we have taught about Diffie Hellman Key Exchange and how it operates. Also a quick overview of AES and the basics of encryption.
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Views: 35948
Quick Trixx

This is a class room example of RSA encryption using 3 digit primes and excel for the calculation engine. The video is in three parts. Part 2 describes the process of raising a number to a large power. This class happened on April 12, 2011 at Eastside Preparatory School in Kirkland
Download the spreadsheet
https://docs.google.com/open?id=1GLcLhuBUvmC5_YxcILVLnkjhghFa8ABSlMLG7Wm9LZE

Views: 8116
Jonathan Briggs

This video gives a general idea on what hash functions are and their uses. It also describes a use of hash functions for a digital signature protocol.

Views: 31093
Leandro Junes

Pairing based cryptography has resulted in a number of breakthrough results, including some major developments in the area of zero knowledge proof systems. A zero knowledge proof system allows a party to prove that a statement is true without revealing any other information. Zero knowledge proofs are used in everything from identification protocols (allowing a party to prove that he is who he claims to be) and encryption schemes with stronger security properties, to securing protocols against malicious adversaries, and constructing privacy preserving systems. It has been shown that zero knowledge proofs can be constructed from a variety of number theoretic assumptions (or, more generally from any trapdoor permutation); however most of these constructions are complex and inefficient. In '06 Groth, Ostrovsky, an Sahai showed how to construct proof systems based on pairings which have much more structure than traditional constructions; this structure in turn has since been shown to result in proof systems with greater efficiency, stronger security, and more functionality. This talk will describe at a high level how pairings allows us to construct zero knowledge proofs with more structure than traditional tools, and then discuss some of the applications that take advantage of this structure, focusing on applications to privacy and anonymity.

Views: 1202
Microsoft Research

Bruce Kapron
University of Victoria; Member, School of Mathematics
March 25, 2014
The goal of computationally sound symbolic security is to create formal systems of cryptography which have a sound interpretation with respect to complexity-based notions of security. While there has been much progress in the development of such systems, one big impediment is the treatment of circular encryptions. In many typical symbolic systems, it is secure to encrypt a key by itself, but in the computational setting, standard notions of security break down in this case. There are now approaches to this problem from both sides. On the symbolic side, Miccianico (2010) presented a system in which adversarial knowledge is modeled co-inductively, and circular encryption is no longer symbolically secure. On the computational side, systems in which circular encryptions are secure have been developed based on standard hardness assumptions. I will survey the work described above, as well as presenting some recent results on extending Micciancio's system beyond the setting of passive eavesdropping adversaries (joint work with Mohammad Hajiabadi.)
For more videos, visit http://video.ias.edu

Views: 192
Institute for Advanced Study

Enroll to Full Course: https://goo.gl/liK0Oq
Networks#4: The video explains the RSA Algorithm (public key encryption) Concept and Example along with the steps to generate the public and private keys. The video also provides a simple example on how to calculate the keys and how to encrypt and decrypt the messages.
For more, visit http://www.EngineeringMentor.com.
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Views: 165371
Skill Gurukul

© 2019 Character analysis of the great gatsby

The essence of our project is that we unite private investors in the pool, to participate in a closed primary offer of TON tokens. Each investor has the opportunity to invest his share through our platform. By registering and using your personal office, everyone can refill bitcoins or ether and buy the share in the pool. The funds are daily sent to the escrow account in US dollars, since participation in the primary offer of TON tokens is impossible by the cryptocurrency. Your share is fixed in US dollars according to the average rate of bitcoin or ether at the time of receipt of funds. At the end of the fund-raising, all raised funds will be used to purchase the TON tokens at the price set at the time of purchase. After that, all tokens will be distributed among participants of our platform in proportion to their contributions in US dollars. All funds are transferred to the escrow account on a daily basis, and in case of impossibility to participate in the TON initial offer, all funds will be returned to their investors. But we plan to participate in the next round of sales, which, according to our data, still going to be. The Telegram messenger can become an excellent launching pad for the initial implementation of the project, as it is now connected by a large number of public chats, groups, and channels with a multi-million base of subscribers. And it is the ready audience for the acquisition of digital content and physical goods. After 2021, it is planned to launch its own element called Telegram. Timeframe of Fundraise.