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: 13046 Fullstack Academy
Just what are elliptic curves and why use a graph shape in cryptography? Dr Mike Pound explains. Mike's myriad Diffie-Hellman videos: https://www.youtube.com/playlist?list=PLzH6n4zXuckpoaxDKOOV26yhgoY2S-xYg https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 177993 Computerphile
Website + download source code @ http://www.zaneacademy.com | derive equations For point addition & point doubling @ https://youtu.be/ImEIf-9LQwg | Elliptic Curve Digital Signature Algorithm (ECDSA) - Public Key Cryptography w/ JAVA (tutorial 10) @ https://youtu.be/Kxt8bXFK6zg 00:05 demo prebuilt version of the application 01:05 find all points that satisfy elliptic curve equation 03:05 show cyclic behavior of a generator point in a small group 04:05 use double and add algorithm for fast point hopping 04:45 quick intro to elliptic curves 05:20 singular versus nonsingular elliptic curves 06:00 why use elliptic curve in cryptography 09:55 equations for elliptic curve point addition and doubling 12:02 what is a field 13:35 elliptic curve group operations 14:02 associativity proof for elliptic curve point addition 15:30 elliptic curve over prime fields 16:35 code the application 19:46 check if curve to be instantiated is singular 24:06 implement point addition and doubling 25:59 find all points that satisfy elliptic curve equation 28:00 check if 2 points are inverse of each other 29:15 explain elliptic curve order, subgroup size n, and cofactor h 32:53 implement double and add algorithm 35:09 test run the application 40:20 what does 'Points on elliptic curve + O have cyclic subgroups' mean 40:45 when do all points on an elliptic curve form a cyclic group
Views: 321 zaneacademy
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: 852 PapersWeLove
Kimmo U. Järvinen and Andrea Miele and Reza Azarderakhsh and Patrick Longa, CHES 2016. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=27837
Views: 369 TheIACR
* Slides: https://www.dropbox.com/s/lghiehvjmkvdava/ecdsa.pdf?dl=0 We are covering all of the material a developer needs to know to be able to build applications on the Bitcoin SV (BSV) blockchain, with or without Money Button. This documentation assumes the viewer is a developer who knows how to build an app, but who doesn't yet know much about Bitcoin SV. * Money Button: https://www.moneybutton.com * Documentation (and more videos): https://docs.moneybutton.com * Blog: https://blog.moneybutton.com * Telegram group for help: https://t.me/moneybuttonhelp * ECDSA: https://docs.moneybutton.com/docs/bsv-ecdsa.html * Mnemonics (BIP39): https://docs.moneybutton.com/docs/bsv-mnemonic.html * Hierarchical Keys and Extended Private Keys and Extended Public Keys (BIP32): https://docs.moneybutton.com/docs/bsv-hd-private-key.html * Private Keys: https://www.youtube.com/watch?v=XPWZ0Sih59o * Public Keys: https://www.youtube.com/watch?v=wYpifoXE7H0 * Addresses: https://www.youtube.com/watch?v=a32dlV2xgIw
Views: 265 Money Button
Types of digital signature approaches - RSA approach - DSS approach Digital Signature Algorithm with easy explanation.The Digital Signature Algorithm (DSA) is a Federal Information Processing Standard for digital signatures.It was proposed by the National Institute of Standards and Technology (NIST) in August 1991 for use in their Digital Signature Standard (DSS) and adopted as FIPS 186 in 1993. Visit Our Channel :- https://www.youtube.com/channel/UCxik... Follow Smit Kadvani on :- Facebook :- https://www.facebook.com/smit.kadvani Instagram :- https://www.instagram.com/the_smit0507 Follow Dhruvan Tanna on :- Facebook :- https://www.facebook.com/dhruvan.tanna1 Instagram :- https://www.instagram.com/dhru1_tanna Follow Keyur Thakkar on :- Facebook :- https://www.facebook.com/keyur.thakka... Instagram :- https://www.instagram.com/keyur_1982 Snapchat :- keyur1610 Follow Ankit Soni on:- Facebook :- https://www.facebook.com/ankitsoni.1511 Instagram :- https://www.instagram.com/ankit_soni1511
Views: 16464 Quick Trixx
Elliptic curve cryptography is an approach to public-key cryptography based on the algebraic structure of elliptic curves over finite fields. One of the main benefits in comparison with non-ECC cryptography is the same level of security provided by keys of smaller size. Elliptic curves are applicable for encryption, digital signatures, pseudo-random generators and other tasks. They are also used in several integer factorization algorithms that have applications in cryptography, such as Lenstra elliptic curve factorization. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 2967 Audiopedia
This is lecture on "Factoring with Elliptic Curves", by Jeremy Teitelbaum, during CTNT 2018, the Connecticut Summer School in Number Theory. For more information about CTNT and other resources and notes, see https://ctnt-summer.math.uconn.edu/
Views: 144 UConn Mathematics
What is POST-QUANTUM CRYPTOGRAPHY? What does POST-QUANTUM CRYPTOGRAPHY mean? POST-QUANTUM CRYPTOGRAPHY meaning - POST-QUANTUM CRYPTOGRAPHY definition - POST-QUANTUM CRYPTOGRAPHY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Post-quantum cryptography refers to cryptographic algorithms (usually public-key algorithms) that are thought to be secure against an attack by a quantum computer. This is not true for the most popular public-key algorithms, which can be efficiently broken by a sufficiently large quantum computer. The problem with the currently popular algorithms is that their security relies on one of three hard mathematical problems: the integer factorization problem, the discrete logarithm problem or the elliptic-curve discrete logarithm problem. All of these problems can be easily solved on a sufficiently powerful quantum computer running Shor's algorithm. Even though current, publicly known, experimental quantum computers are too small to attack any real cryptographic algorithm, many cryptographers are designing new algorithms to prepare for a time when quantum computing becomes a threat. This work has gained greater attention from academics and industry through the PQCrypto conference series since 2006 and more recently by several workshops on Quantum Safe Cryptography hosted by the European Telecommunications Standards Institute (ETSI) and the Institute for Quantum Computing. In contrast to the threat quantum computing poses to current public-key algorithms, most current symmetric cryptographic algorithms and hash functions are considered to be relatively secure against attacks by quantum computers. While the quantum Grover's algorithm does speed up attacks against symmetric ciphers, doubling the key size can effectively block these attacks. Thus post-quantum symmetric cryptography does not need to differ significantly from current symmetric cryptography.
Views: 250 The Audiopedia
This will be the fourth of six cryptography primer sessions exploring the basics of modern cryptography. In this session, we’ll explore primality testing, elliptic curve cryptosystems, and lattice-based cryptosystems. Subsequent sessions (on alternating Fridays) are expected to include the following topics. Depending on the interests of the participants, other topics may be included or substituted. Attacks, vulnerabilities, and practical considerations Applications including zero-knowledge, secret sharing, homomorphic encryption, and election protocols.
Views: 421 Microsoft Research
For more information visit: To download the video visit: Playlist Shmoocon 2017: Speakers: Daniel J. Bernstein. 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: And you. Slides - - Paper - Keywords: Elliptic-curve cryptography, verifiably.
Views: 40 Belle Crossett
A talk given at the University of Waterloo on July 12th, 2016. The intended audience was mathematics students without necessarily any prior background in cryptography or elliptic curves. Apologies for the poor audio quality. Use subtitles if you can't hear.
Views: 2375 David Urbanik
This episode is brought to you by Squarespace: http://www.squarespace.com/physicsgirl With recent high-profile security decryption cases, encryption is more important than ever. Much of your browser usage and your smartphone data is encrypted. But what does that process actually entail? And when computers get smarter and faster due to advances in quantum physics, how will encryption keep up? http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl http://physicsgirl.org/ Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2 Creator/Editor: Dianna Cowern Writer: Sophia Chen Animator: Kyle Norby Special thanks to Nathan Lysne Source: http://gva.noekeon.org/QCandSKD/QCand... http://physicsworld.com/cws/article/n... https://epic.org/crypto/export_contro... http://fas.org/irp/offdocs/eo_crypt_9... Music: APM and YouTube
Views: 279419 Physics Girl
MIT 6.046J Design and Analysis of Algorithms, Spring 2015 View the complete course: http://ocw.mit.edu/6-046JS15 Instructor: Srinivas Devadas In this lecture, Professor Devadas continues with cryptography, introducing encryption methods. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 17955 MIT OpenCourseWare
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/donateinfi Only 4 steps stand between you and the secrets hidden behind RSA cryptography. Find out how to crack the world’s most commonly used form of encryption. Tweet at us! @pbsinfinite Facebook: facebook.com/pbsinfinite series Email us! pbsinfiniteseries [at] gmail [dot] com Previous Episode: Can We Combine pi & e into a Rational Number? https://www.youtube.com/watch?v=bG7cCXqcJag&t=25s Links to other resources: Shor's paper: https://arxiv.org/abs/quant-ph/9508027v2 Lecture on Shor's Algorithm: https://arxiv.org/pdf/quant-ph/0010034.pdf Blog on Shor's algorithm: http://www.scottaaronson.com/blog/?p=208 Video on RSA cryptography: https://www.youtube.com/watch?v=wXB-V_Keiu8 Another video on RSA cryptography: https://www.youtube.com/watch?v=4zahvcJ9glg Euler's Big Idea: https://en.wikipedia.org/wiki/Euler%27s_theorem (I can find a non-wiki article, but I don't actually use this in the video. It's just where to learn more about the relevant math Euler did.) Written and Hosted by Kelsey Houston-Edwards Produced by Rusty Ward Graphics by Ray Lux Made by Kornhaber Brown (www.kornhaberbrown.com) Challenge Winner - Reddles37 https://www.youtube.com/watch?v=bG7cCXqcJag&lc=z135cnmgxlbwch1ds233sbzgaojkivaz004 Comments answered by Kelsey: Joel David Hamkins https://www.youtube.com/watch?v=bG7cCXqcJag&lc=z13zdpcwyk2ofhugh04cdh4agsr2whmbsmk0k PCreeper394 https://www.youtube.com/watch?v=bG7cCXqcJag&lc=z135w324kw21j1qi104cdzvrpoixslmq1jw
Views: 195213 PBS Infinite Series
https://media.ccc.de/v/35c3-9926-the_year_in_post-quantum_crypto The world is finally catching on to the urgency of deploying post-quantum cryptography: cryptography designed to survive attacks by quantum computers. NIST's post-quantum competition is in full swing, and network protocols are exploring post-quantum extensions. This talk will take the audience on a journey through selected recent highlights from the post-quantum world. Post-quantum cryptography has become one of the most active areas in cryptography, trying to address important questions from potential users. Is post-quantum cryptography secure? In the first ten months of this year we have seen several serious breaks of submissions to the NIST competition. At this point, out of the original 69 submissions, 13 are broken and 8 are partially broken. Are the remaining 48 submissions all secure? Or is this competition a denial-of-service attack against the cryptanalysis community? NIST will select fewer candidates for the 2nd round, but it is not clear whether there is an adequate basis for judging security. Does post-quantum cryptography provide the functionality we expect from cryptography? For example, the original Diffie-Hellman system provides not just encryption but also more advanced features such as non-interactive key exchange (not provided by any NIST submissions) and blinding. The era of post-NIST post-quantum cryptography has begun with the exciting new CSIDH proposal, which has non-interactive key exchange and is smaller than any NIST submission, but uses more CPU time and needs much more study. Is post-quantum cryptography small enough? Even for network protocols that rely purely on encryption, integration remains a major problem because of the bandwidth requirements of most post-quantum systems, especially the post-quantum systems with the strongest security track records. Experiments with integration of post-quantum cryptography into TLS have focused on encryption without post-quantum authentication. A new generation of network protocols has been designed from the ground up for full post-quantum security. Is post-quantum cryptographic software fast enough, and is it safe to use? Adding post-quantum cryptography to the cryptographic software ecosystem has produced a giant step backwards in software quality. Major areas of current activity include software speedups, benchmarking, bug fixes, formal verification, patent avoidance, and development of post-quantum software libraries such as Open Quantum Safe and libpqcrypto. The talk will be given as a joint presentation by Daniel J. Bernstein and Tanja Lange. djb Tanja Lange https://fahrplan.events.ccc.de/congress/2018/Fahrplan/events/9926.html
Views: 3833 media.ccc.de
In this presentation I will outline two projects which I have been working on during my PhD. Both projects are related to the elliptic curve discrete logarithm problem (ECDLP): the theoretical foundation of many modern cryptosystems. First I will outline how we have set a new record by solving the ECDLP over a 112-bit prime field using a cluster of PlayStation 3 game consoles in 2009. Next, the negation map optimization is discussed: this is an technique to speed up the Pollard rho method when solving the ECDLP. It is well known that the random walks used by Pollard rho when combined with the negation map get trapped in fruitless cycles. I will present that previously published approaches to deal with this problem are plagued by recurring cycles: effective alternative countermeasures are proposed.
Views: 226 Microsoft Research
http://victoriastaffordapsychicinvestigation.wordpress.com/ http://theideagirlsays.wordpress.com/ http://www.twitter.com/theideagirl 5g force ufo engine acceleration plasma formulas part 284c3c of 100 videos there are more videos after this one i'll post all then update the #. Math Equation Wow Seti 1977 radio signal alien Wow SETI 1977 radio signal alien 11/111/1/1/14=0.0071 Google 0.0071 Google 11 111 1 1 14 726 pm edt 22 July 2012 My thoughts: G = 1 is a key number because it represents "speed" here as in the UFO Engine 5g FORCE formula of ideas. Key words - Complex Torus, manifolds see next videos.
Views: 57 theideagirlsays
What is PUBLIC-KEY CRYPTOGRAPHY? What does PUBLIC-KEY CRYPTOGRAPHY mean? PUBLIC-KEY CRYPTOGRAPHY meaning - PUBLIC-KEY CRYPTOGRAPHY definition - PUBLIC-KEY CRYPTOGRAPHY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Public-key cryptography, or asymmetric cryptography, is any cryptographic system that uses pairs of keys: public keys that may be disseminated widely paired with private keys which are known only to the owner. There are two functions that can be achieved: using a public key to authenticate that a message originated with a holder of the paired private key; or encrypting a message with a public key to ensure that only the holder of the paired private key can decrypt it. In a public-key encryption system, any person can encrypt a message using the public key of the receiver, but such a message can be decrypted only with the receiver's private key. For this to work it must be computationally easy for a user to generate a public and private key-pair to be used for encryption and decryption. The strength of a public-key cryptography system relies on the degree of difficulty (computational impracticality) for a properly generated private key to be determined from its corresponding public key. Security then depends only on keeping the private key private, and the public key may be published without compromising security. Public-key cryptography systems often rely on cryptographic algorithms based on mathematical problems that currently admit no efficient solution—particularly those inherent in certain integer factorization, discrete logarithm, and elliptic curve relationships. Public key algorithms, unlike symmetric key algorithms, do not require a secure channel for the initial exchange of one (or more) secret keys between the parties. Because of the computational complexity of asymmetric encryption, it is usually used only for small blocks of data, typically the transfer of a symmetric encryption key (e.g. a session key). This symmetric key is then used to encrypt the rest of the potentially long message sequence. The symmetric encryption/decryption is based on simpler algorithms and is much faster. Message authentication involves hashing the message to produce a "digest," and encrypting the digest with the private key to produce a digital signature. Thereafter anyone can verify this signature by (1) computing the hash of the message, (2) decrypting the signature with the signer's public key, and (3) comparing the computed digest with the decrypted digest. Equality between the digests confirms the message is unmodified since it was signed, and that the signer, and no one else, intentionally performed the signature operation — presuming the signer's private key has remained secret. The security of such procedure depends on a hash algorithm of such quality that it is computationally impossible to alter or find a substitute message that produces the same digest - but studies have shown that even with the MD5 and SHA-1 algorithms, producing an altered or substitute message is not impossible. The current hashing standard for encryption is SHA-2. The message itself can also be used in place of the digest. Public-key algorithms are fundamental security ingredients in cryptosystems, applications and protocols. They underpin various Internet standards, such as Transport Layer Security (TLS), S/MIME, PGP, and GPG. Some public key algorithms provide key distribution and secrecy (e.g., Diffie–Hellman key exchange), some provide digital signatures (e.g., Digital Signature Algorithm), and some provide both (e.g., RSA). Public-key cryptography finds application in, among others, the information technology security discipline, information security. Information security (IS) is concerned with all aspects of protecting electronic information assets against security threats. Public-key cryptography is used as a method of assuring the confidentiality, authenticity and non-repudiability of electronic communications and data storage.
Views: 849 The Audiopedia
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/donateinfi Symmetric keys are essential to encrypting messages. How can two people share the same key without someone else getting a hold of it? Upfront asymmetric encryption is one way, but another is Diffie-Hellman key exchange. This is part 3 in our Cryptography 101 series. Check out the playlist here for parts 1 & 2: https://www.youtube.com/watch?v=NOs34_-eREk&list=PLa6IE8XPP_gmVt-Q4ldHi56mYsBuOg2Qw Tweet at us! @pbsinfinite Facebook: facebook.com/pbsinfinite series Email us! pbsinfiniteseries [at] gmail [dot] com Previous Episode Topology vs. “a” Topology https://www.youtube.com/watch?v=tdOaMOcxY7U&t=13s Symmetric single-key encryption schemes have become the workhorses of secure communication for a good reason. They’re fast and practically bulletproof… once two parties like Alice and Bob have a single shared key in hand. And that’s the challenge -- they can’t use symmetric key encryption to share the original symmetric key, so how do they get started? Written and Hosted by Gabe Perez-Giz Produced by Rusty Ward Graphics by Ray Lux Assistant Editing and Sound Design by Mike Petrow and Meah Denee Barrington Made by Kornhaber Brown (www.kornhaberbrown.com) Thanks to Matthew O'Connor, Yana Chernobilsky, and John Hoffman who are supporting us on Patreon at the Identity level! And thanks to Nicholas Rose, Jason Hise, Thomas Scheer, Marting Sergio H. Faester, CSS, and Mauricio Pacheco who are supporting us at the Lemma level!
Views: 53799 PBS Infinite Series
TLS 1.2, AES with 128 bit encryption (High); ECDH_P256 with 256 bit exchange
Views: 209 Jesus Garcia
hardware security - FPGA Implementation of Crypto To get certificate subscribe at: https://www.coursera.org/learn/hardware-security ================================== Hardware security playlist: https://www.youtube.com/playlist?list=PL2jykFOD1AWZRNhehPCsDLhfRkM1abYHd ================================== About this course: In this course, we will study security and trust from the hardware perspective. Upon completing the course, students will understand the vulnerabilities in current digital system design flow and the physical attacks to these systems. They will learn that security starts from hardware design and be familiar with the tools and skills to build secure and trusted hardware.
Views: 1275 intrigano
The basic mechanics of a bitcoin transaction between two parties and what is included within a given bitcoin transaction record. More free lessons at: http://www.khanacademy.org/video?v=9-9_v1wSPBQ 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: 111863 Khan Academy
Animations of Hendrik Lenstra’s Elliptic Curve Factorization Algorithm (aka ECM), checking if 1997 is a prime number using the curves with x coefficients 23, 101 and 853. This algorithm takes a curve over the field Z/nZ and using the Group Law on Elliptic Curves, “multiplies” a point P by a big integer (in this animations, I have used 720719). This multiplication is sped up using the double-and-add algorithm. If the algorithm couldn’t compute the next point during this multiplication, it would have found a factor of n. When a point P turns blue in the animation, it means that P⊕P gives the green point. When two points P and Q = (0, 1) turn blue, the green point is the resultant of the Group Law P⊕Q. Code: https://gist.github.com/andreuinyu/d98c12f81c49e2df4e85 Tumblr: http://andreuinyu.tumblr.com/post/101190621206/animations-of-hendrik-lenstras-elliptic-curve Reddit: http://redd.it/2klii6
Views: 1804 Andreu Punsola Soler
#United States' National Institute of Standards and #Technology "With the public's participation," #NIST's Cryptographic Technology Group says in a blog post (https://goo.gl/DZRVhS), "NIST intends to spend the next few years gathering, testing and ultimately recommending new algorithms that would be less susceptible to a quantum computer's attack." The development of "new public-key cryptography standards will specify one or more additional unclassified, publicly disclosed digital signature, public-key encryption, and key establishment algorithms that are capable of protecting sensitive government information well into the foreseeable future, including after the advent of quantum computers," the agency says (https://goo.gl/8rnFmH). -------------------------------------- You can see the playlist: - Breaking news: https://goo.gl/wyqG6i - Life skills: https://goo.gl/UoRrct - SE Optimization: https://goo.gl/XDkc17 *Website: http://ictblogs.net/ *Facebook: http://facebook.com/vnwpages/ *Twitter: https://twitter.com/ictblogsnet
Views: 290 ICT Blog's
AES algorithm is the Block Cipher Symmetric Algorithm Block Size is 128 bits Key Size is 128 bits ( 4 words or 16 Bytes ) Sub Key Size is 1 Word (32 bit) Number of Sub keys 44 Words Number of Rounds 10 Cipher Text Size is 128 bits
Views: 116242 Sundeep Saradhi Kanthety
Google IT Support Professional Certificate Course 6 - IT Security: Defense against the digital dark arts, Module 2 - Cryptology To get certificate subscribe at: https://www.coursera.org/specializations/google-it-support ================= The whole course playlist: Google IT Support Professional Certificate https://www.youtube.com/playlist?list=PL2jykFOD1AWZlfwMPcVKwaFrRXbqObI3U ================= IT Security https://www.youtube.com/playlist?list=PL2jykFOD1AWaEXEpyRf-Im3U8WQ962Y4B ================= https://www.facebook.com/cyberassociation/ https://scsa.ge/en/online-courses/ This six-course certificate, developed exclusively by Google, includes innovative curriculum designed to prepare you for an entry-level role in IT support. A job in IT can mean in-person or remote help desk work, either in a small business or at a global company, like Google. Whether you’ve been tinkering with IT or are completely new to the field, you’ve come to the right place. If you’re looking for a job, upon completion of the certificate, you can share your information with top employers, like Bank of America, Walmart, Sprint, GE Digital, PNC Bank, Infosys, TEKsystems, UPMC, and, of course, Google. Course 6 - IT Security: Defense against the digital dark arts About the Course This course covers a wide variety of IT security concepts, tools, and best practices. It introduces threats and attacks and the many ways they can show up. We’ll give you some background of encryption algorithms and how they’re used to safeguard data. Then, we’ll dive into the three As of information security: Authentication, authorization, and accounting. We’ll also cover network security solutions, ranging from firewalls to Wifi encryption options. The course is rounded out by putting all these elements together into a multi-layered, in-depth security architecture, followed by recommendations on how to integrate a culture of security into your organization or team. At the end of this course, you’ll understand: - how various encryption algorithms and techniques work and their benefits and limitations. - various authentication systems and types. - the difference between authentication and authorization. At the end of this course, you’ll be able to: - evaluate potential risks and recommend ways to reduce risk. - make recommendations on how best to secure a network. - help others to understand security concepts and protect themselves Who is this class for: This program is intended for beginners who are interested in developing the skills necessary to perform entry-level IT support. No pre-requisite knowledge is required. However, if you do have some familiarity with IT, you can skip through any content that you might already know and speed ahead to the graded assessments. Module 2 - Cryptology In the second module of this course, we'll learn about cryptology. We'll explore different types of encryption practices and how they work. We'll show you the most common algorithms used in cryptography and how they've evolved over time. By the end of this module, you'll understand how symmetric encryption, asymmetric encryption, and hashing work; you'll also know how to choose the most appropriate cryptographic method for a scenario you may see in the workplace. Learning Objectives • Understand the how symmetric encryption, asymmetric encryption, and hashing work. • Describe the most common algorithms of cryptography. • Choose the most appropriate cryptographic method given a scenario.
Views: 118 intrigano
This is part of a series of lectures by Luis Caffarelli on the regularity of solutions of elliptic equations.
Views: 2681 MathSciResInst
MIT 6.046J Design and Analysis of Algorithms, Spring 2015 View the complete course: http://ocw.mit.edu/6-046JS15 Instructor: Srinivas Devadas In this lecture, Professor Devadas covers the basics of cryptography, including desirable properties of cryptographic functions, and their applications to security. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 76171 MIT OpenCourseWare
RIPEMD 160 hash algorithm https://hash.onlinetoolsland.com/ripemd/ The whole name of RIPEMD is RACE Integrity Primitives Evaluation Message Digest. RIPEMD a family of cryptographic hash functions developed by Hans Dobbertin, Antoon Bosselaers and Bart Preneel RIPEMD is published in 1996. RIPEMD-160 is an improved version of the original RIPEMD RIPEMD-160 has a 160-bit length ,and is the most common used version in the RIPEMD family. there are 128, 256 and 320-bit versions of RIPEMD algorithm,RIPEMD-128 is designed to replacement for the original RIPEMD. In 2004, a hash collision was reported for the original RIPEMD algorithm . The RIPEMD-160 hash algorithm is open to the public from the beginning , unlike the sha-1 and sha-2 algorithms. Which is developed by the NSA. https://hash.onlinetoolsland.com/ripemd/ The RIPEMD-160 hash algorithm is not used as frequently as the SHA-1 algorithm , but it is not get constrained by any patents. The 128 bit RIPEMD-128 was invented as a replacement for the initial RIPEMD algorithm , the initial RIPEMD algorithm was also 128 bit, but the security of the original RIPEMD algorithm is questionable. The RIPEMD-256 and RIPEMD-320 versions only diminish the possibility of accidental collision, but their security level is not as high as the RIPEMD-128 and RIPEMD-160 algorithm . The RIPEMD-160 hash algorithm contain 160bit data, which is also known as the RIPE message digests, the 160 bit data is represented as 40-digit hexadecimal numbers. The following data show us a 43 byte length of ascii input and the result RIPEMD-160 hash: RIPEMD-160("The quick brown fox jumps over the lazy dog") = 37f332f68db77bd9d7edd4969571ad671cf9dd3b The RIPEMD-160 also act just with the avalanche effect which is common in all cryptographic hash functions (small changes, e.g. changing d to c, result in a completely different hash) RIPEMD-160("The quick brown fox jumps over the lazy cog") = 132072df690933835eb8b6ad0b77e7b6f14acad7 The RIPEMD hash is a collection of several cryptographic hash functions. It compete with the MD hash family and the SHA hash family. The original RIPEMD hash algorithm is designed as a variation of the md4 hash algorithm , in fact there are 2 MD4 algorithm. The RIPEMD algorithm is not as efficient as the MD5 hash algorithm. And because it is based on MD4 , there are some doubt that is also contain some weakness that the MD4 hash algorithm has, for example the collisions flaw Because the concerns, the author of the RIPEMD make a new hash algorithm called the RIPEMD-160. The RIPEMD-160 algorithm is quite good, and robust. Compare the permance between the sha 1 and RIPEMD-160 , the RIPEMD-160 is a bit slower ,so it is not used widely as the SHA-1 algorithm. One of the main useage for the RIPEMD-160 is inside the PGP. That is because as a sign of defiance against governmental agencies, the pgp chose the RIPEMD-160 over SHA-1 hash algorithm The RIPEMD-256 is a 256-bit version of RIPEMD-160 algorithm, but it is not widely used compare to the sha hash family such as the sha 2. So this is why the RIPEMD hash algorithm is not widely used. The difference the RIPEMD-160 or RIPEMD-256 algorithm Some people will ask which RIPEMD hash to use, the RIPEMD-160 or RIPEMD-256. At first glance , the RIPEMD-160 seems a quite good hash algorithm, but as the growth of current computing .the RIPEMD-160 output is a bit short. (if you want to generate encryption with 128-bit keys, you should, go for the hash algorithm functions with 256-bit output) and the RIPEMD-160 computing speed is not very good compare to other same level algorithm, so may be you can get better performance if you go with the SHA-256, which has more optimized implementations The RIPEMD-256 implementation is a new one compare to its cousins . but it is not quite popular, not many reaserch have done on it , so you should take more caution, if you want to use it on your commercial product. Since the 128 bit hash result no longer stand against the brutal force collision attack At Crypto 2004 several Chinese crypto scientists announced that they found collisions for MD4, MD5, RIPEMD, and the 128-bit version of HAVAL. So the RIPEMD-160 is designed as a improved version of the RIPEMD-128 hash result. And is expected to be secure for the next ten years or more. https://hash.onlinetoolsland.com/ripemd/ The RIPEMD -160 is tuned for the 32-bit processors. The RIPEMD-256 and RIPEMD-320 hash algorithm are extensions of RIPEMD-128 and RIPEMD-160. They are designed as a longer hash result without the need of a larger security level. Where can I find a detailed description of RIPEMD-160 hash algorithm
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Small devices are unable to communicate with constrained resources. In addition to that Internet of things (IOT) has to take care of heterogeneity. As billions of different sensors, computers , and other communication elements need to be connected together, which may work on different protocols. Therefore, to tackle this problem Internet Engineering Task Force (IETF) has developed Constrained Application Protocol (CoAP). It is one of the largest application protocols meant for IOT. Links and References : https://zaidmufti.wordpress.com/2016/08/23/coap-an-application-layer-protocol-for-smart-dust/ http://www.cse.wustl.edu/~jain/cse574-14/ftp/coap/ https://community.arm.com/servlet/JiveServlet/previewBody/8633-102215471/ARM%20CoAP%20Tutorial%20April%2030%202014.pdf https://www.youtube.com/watch?v=COrbBi4c0HI
Views: 4180 AKIF MUFTI
Shipping a Solid Rust Crate by Michael Gattozzi There's a lot more to releasing a quality crate than just the code. Automating the testing to make sure nothing breaks, checking for test coverage, making sure there are examples, providing documentation are important in making your crate solid and easy to use. Beyond that how do you get people to actually use your crate? You might not know how to increase the visibility of your crate or of small things that can be done to get interest in your crate. This talk covers all of these aspects to help improve the quality of ones crate beyond the code itself.
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Part 2 of solving the exploitation challenge from RHme3. In the last video we found the bug and now we create the exploit. part 1: https://www.youtube.com/watch?v=sJPhsE_XeKI -=[ 🔴 Stuff I use ]=- → Microphone:* https://amzn.to/2LW6ldx → Graphics tablet:* https://amzn.to/2C8djYj → Camera#1 for streaming:* https://amzn.to/2SJ66VM → Lens for streaming:* https://amzn.to/2CdG31I → Connect Camera#1 to PC:* https://amzn.to/2VDRhWj → Camera#2 for electronics:* https://amzn.to/2LWxehv → Lens for macro shots:* https://amzn.to/2C5tXrw → Keyboard:* https://amzn.to/2LZgCFD → Headphones:* https://amzn.to/2M2KhxW -=[ ❤️ Support ]=- → per Video: https://www.patreon.com/join/liveoverflow → per Month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join -=[ 🐕 Social ]=- → Twitter: https://twitter.com/LiveOverflow/ → Website: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/ -=[ 📄 P.S. ]=- All links with "*" are affiliate links. LiveOverflow / Security Flag GmbH is part of the Amazon Affiliate Partner Programm. #BinaryExploitation #UseAfterFree
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