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Elliptic Curve Cryptography Tutorial - An Introduction to Elliptic Curve Cryptography
 
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Learn more advanced front-end and full-stack development at: https://www.fullstackacademy.com Elliptic Curve Cryptography (ECC) is a type of public key cryptography that relies on the math of both elliptic curves as well as number theory. This technique can be used to create smaller, faster, and more efficient cryptographic keys. In this Elliptic Curve Cryptography tutorial, we introduce the mathematical structure behind this new algorithm. Watch this video to learn: - What Elliptic Curve Cryptography is - The advantages of Elliptic Curve Cryptography vs. old algorithms - An example of Elliptic Curve Cryptography
Views: 8489 Fullstack Academy
Implementation of Elliptic Curve Cryptography
 
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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: 12218 nptelhrd
PWLSF - 7/2017 - Kevin Burke on Curve25519 and Fast Public Key Cryptography
 
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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: 609 PapersWeLove
Application of Elliptic Curves to Cryptography
 
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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: 10024 nptelhrd
Efficient Algorithm and Architecture for Elliptic Curve Cryptography for Extremely Constraine
 
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FourQ on FPGA  New Hardware Speed Records for Elliptic Curve Cryptography over Large Prime Character
 
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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: 309 TheIACR
ANT X talk on Elliptic Curves over Q(sqrt(5))
 
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See http://wstein.org/talks/2012-07-10-sqrt5/sqrt5.pdf
Views: 151 William Stein
Algorithms for primes
 
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This talk will consist of a series of light mini-talks inspired by Atkin's papers on recognizing primes (1982, 'On a primality test of Solovay and Strassen'; 1995, 'Intelligent primality test offer'), proving primes to be prime (1993, 'Elliptic curves and primality proving'), factoring integers into primes (1993, 'Finding suitable curves for the elliptic curve method of factorization'), and enumerating primes (2004, 'Prime sieves using binary quadratic forms').
Views: 1349 Microsoft Research
Faster Pairing Computations on Curves with High-Degree Twists.
 
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Talk at pkc 2010. Authors: Craig Costello, Tanja Lange, Michael Naehrig. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=23413
Views: 229 TheIACR
Faster Primality Test - 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: 22037 Udacity
Discrete Log Problem - 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: 12262 Udacity
Public Key Cryptography: Diffie-Hellman Key Exchange (short version)
 
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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: 441687 Art of the Problem
How to Break Cryptography | Infinite Series
 
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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: 177725 PBS Infinite Series
Hendrik Lenstra’s Elliptic Curve Factorization Algorithm checking if 1997 is prime
 
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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: 1654 Andreu Punsola Soler
Elliptic curve cryptography
 
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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: 2631 Audiopedia
Lecture 5: Data Encryption Standard (DES): Encryption by Christof Paar
 
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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
Recover RSA private key from public keys - rhme2 Key Server (crypto 200)
 
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Using the greatest common divisor (GCD) to factorize the public modulo into the secret primes, so we can forge a RSA signature. Source for the rhme2 challenges: https://github.com/Riscure/Rhme-2016 -------------------------------------- Twitter: https://twitter.com/LiveOverflow Website: http://liveoverflow.com/ Subreddit: https://www.reddit.com/r/LiveOverflow/
Views: 34728 LiveOverflow
The Mathematics of Diffie-Hellman Key Exchange | Infinite Series
 
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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: 46382 PBS Infinite Series
Symmetric Encryption Ciphers - CompTIA Security+ SY0-401: 6.2
 
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Security+ Training Course Index: http://professormesser.link/sy0401 Professor Messer’s Course Notes: http://professormesser.link/sy0401cn Frequently Asked Questions: http://professormesser.link/faq - - - - - The speed of symmetric encryption makes it a good choice for our high-speed networks. In this video, you’ll learn about RC4, DES, 3DES, AES, Blowfish, and Twofish. - - - - - Download entire video course: http://professormesser.link/401adyt Get the course on MP3 audio: http://professormesser.link/401vdyt Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ 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: 30476 Professor Messer
22. Cryptography: Encryption
 
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MIT 6.046J Design and Analysis of Algorithms, Spring 2015 View the complete course: http://ocw.mit.edu/6-046JS15 Instructor: Srinivas Devadas In this lecture, Professor Devadas continues with cryptography, introducing encryption methods. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 15478 MIT OpenCourseWare
Public key cryptography - Diffie-Hellman Key Exchange (full version)
 
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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: 601907 Art of the Problem
Quantum Cryptography Explained
 
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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: 263898 Physics Girl
21. Cryptography: Hash Functions
 
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MIT 6.046J Design and Analysis of Algorithms, Spring 2015 View the complete course: http://ocw.mit.edu/6-046JS15 Instructor: Srinivas Devadas In this lecture, Professor Devadas 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: 65747 MIT OpenCourseWare
"Mathematics. The Mother of All ?" - NOVA documentary
 
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This NOVA documentary presents math's astonishing power across the centuries. We discover math's signature in the swirl of a nautilus shell, the whirlpool of a galaxy, and the spiral in the center of a sunflower. Math was essential to everything from the first wireless radio transmissions to the prediction and discovery of the Higgs boson, the successful landing of rovers on Mars and to the creation of Bitcoin algorithm. It all leads to the ultimate riddle: Is math a human invention or the discovery of the language of the universe? THIS IS AN EXTRACT FROM ORIGINAL VIDEOCLIP THAT CAN BE FOUND HERE: https://www.youtube.com/watch?v=Ocq8OR4OydQ
Views: 9406 Bitcoin TV
Introduction to the Post-Quantum Supersingular Isogeny Diffie-Hellman Protocol
 
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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: 1881 David Urbanik
Cryptography in Embedded Systems
 
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The basic model of cryptography used in embedded systems was covered in the presentation.
Views: 282 Honey Pandey
Chris Peikert - Lattice Cryptography for the Internet
 
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Chris Peikert of Georgia Institute of Technology presented a talk titled: Lattice cryptography for the internet at the 2014 PQCrypto conference in October, 2014. Abstract: In recent years, lattice-based cryptography has been recognized for its many attractive properties, such as strong provable security guarantees and apparent resistance to quantum attacks, flexibility for realizing powerful tools like fully homomorphic encryption, and high asymptotic efficiency. Indeed, several works have demonstrated that for basic tasks like encryption and authentication, lattice-based primitives can have performance competitive with (or even surpassing) those based on classical mechanisms like RSA or Diffie-Hellman. However, there still has been relatively little work on developing lattice cryptography for deployment in real-world cryptosystems and protocols. In this work, we take a step toward that goal, by giving efficient and practical lattice-based protocols for key transport, encryption, and authenticated key exchange that are suitable as "drop-in" components for proposed Internet standards and other open protocols. The security of all our proposals is provable based (sometimes in the random-oracle model) on the well-studied "leaning with errors over rings" problem, and hence on the conjectured worst-case hardness of problems on ideal lattices (against quantum algorithms). One of our main technical innovations (which may be of independent interest) is a simple, low-bandwidth reconciliation technique that allows two parties who "approximately agree" on a secret value to reach exact agreement, a setting common to essentially all lattice-bases encryption schemes. Our technique reduces the ciphertext length of prior (already compact) encryption schemes nearly twofold, at essentially no cost. PQCrypto 2014 Book: http://www.springer.com/computer/security+and+cryptology/book/978-3-319-11658-7 Workshop: https://pqcrypto2014.uwaterloo.ca/ Find out more about IQC! Website - https://uwaterloo.ca/institute-for-qu... Facebook - https://www.facebook.com/QuantumIQC Twitter - https://twitter.com/QuantumIQC
NIST Calls Development of Quantum Proof Encryption Algorithms
 
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#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: 262 ICT Blog's
What is PUBLIC-KEY CRYPTOGRAPHY? What does PUBLIC-KEY CRYPTOGRAPHY mean?
 
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What is PUBLIC-KEY CRYPTOGRAPHY? What does PUBLIC-KEY CRYPTOGRAPHY mean? PUBLIC-KEY CRYPTOGRAPHY meaning - PUBLIC-KEY CRYPTOGRAPHY definition - PUBLIC-KEY CRYPTOGRAPHY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Public-key cryptography, or asymmetric cryptography, is any cryptographic system that uses pairs of keys: public keys that may be disseminated widely paired with private keys which are known only to the owner. There are two functions that can be achieved: using a public key to authenticate that a message originated with a holder of the paired private key; or encrypting a message with a public key to ensure that only the holder of the paired private key can decrypt it. In a public-key encryption system, any person can encrypt a message using the public key of the receiver, but such a message can be decrypted only with the receiver's private key. For this to work it must be computationally easy for a user to generate a public and private key-pair to be used for encryption and decryption. The strength of a public-key cryptography system relies on the degree of difficulty (computational impracticality) for a properly generated private key to be determined from its corresponding public key. Security then depends only on keeping the private key private, and the public key may be published without compromising security. Public-key cryptography systems often rely on cryptographic algorithms based on mathematical problems that currently admit no efficient solution—particularly those inherent in certain integer factorization, discrete logarithm, and elliptic curve relationships. Public key algorithms, unlike symmetric key algorithms, do not require a secure channel for the initial exchange of one (or more) secret keys between the parties. Because of the computational complexity of asymmetric encryption, it is usually used only for small blocks of data, typically the transfer of a symmetric encryption key (e.g. a session key). This symmetric key is then used to encrypt the rest of the potentially long message sequence. The symmetric encryption/decryption is based on simpler algorithms and is much faster. Message authentication involves hashing the message to produce a "digest," and encrypting the digest with the private key to produce a digital signature. Thereafter anyone can verify this signature by (1) computing the hash of the message, (2) decrypting the signature with the signer's public key, and (3) comparing the computed digest with the decrypted digest. Equality between the digests confirms the message is unmodified since it was signed, and that the signer, and no one else, intentionally performed the signature operation — presuming the signer's private key has remained secret. The security of such procedure depends on a hash algorithm of such quality that it is computationally impossible to alter or find a substitute message that produces the same digest - but studies have shown that even with the MD5 and SHA-1 algorithms, producing an altered or substitute message is not impossible. The current hashing standard for encryption is SHA-2. The message itself can also be used in place of the digest. Public-key algorithms are fundamental security ingredients in cryptosystems, applications and protocols. They underpin various Internet standards, such as Transport Layer Security (TLS), S/MIME, PGP, and GPG. Some public key algorithms provide key distribution and secrecy (e.g., Diffie–Hellman key exchange), some provide digital signatures (e.g., Digital Signature Algorithm), and some provide both (e.g., RSA). Public-key cryptography finds application in, among others, the information technology security discipline, information security. Information security (IS) is concerned with all aspects of protecting electronic information assets against security threats. Public-key cryptography is used as a method of assuring the confidentiality, authenticity and non-repudiability of electronic communications and data storage.
Views: 755 The Audiopedia
Cryptanalysis of AES and SHA-2: how far we are from compromising worldwide encryption
 
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Modern cryptanalysis typically deal with basic cryptographic primitives where a vulnerability might imply an unavoidable threat to a full cryptosystem. The cipher AES and the hash family SHA-2 are used in numerous theoretical constructions and applications. They were designed over 10 years ago and survived intensive cryptanalytic efforts. Despite hundreds of papers written on the subject, no weakness was discovered in either design. Only recently it was announced that the secret key of the AES cipher can be found faster than by exhaustive search by a small but noticeable factor. At about the same time the SHA-2 shortened by as little as 25 was found to be not a one-way function.
Views: 381 Microsoft Research
What is POST-QUANTUM CRYPTOGRAPHY? What does POST-QUANTUM CRYPTOGRAPHY mean?
 
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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: 162 The Audiopedia
Hashing Algorithms
 
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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: 70 intrigano
NaCl: A New Crypto Library [ShmooCon 2015]
 
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Daniel J. Bernstein and Tanja Lange NaCl (pronounced "salt") is a new easy-to-use high-speed software library for encryption, decryption, signatures, etc. NaCl's goal is to provide all of the core operations needed to build higher-level cryptographic tools. Of course, other libraries already exist for these core operations, but NaCl improves security, improves usability, and improves speed. We'll explain how the design and implementation of NaCl avoid various types of cryptographic disasters suffered by previous cryptographic libraries such as OpenSSL. This talk also presents TweetNaCl, a self-contained public-domain C library which reimplements the NaCl library in just 100 tweets. See https://twitter.com/tweetnacl. We're researchers in applied cryptography working on making secure crypto more usable and on eliminating bad crypto. This includes us sometimes breaking bad crypto but most of the time our work is constructive. We're the core NaCl development team, along with Peter Schwabe. We've designed several cryptosystems, including Salsa20, Poly1305, Curve25519, and Ed25519. These cryptosystems are designed for security, robustness, performance, and ease of implementation without data-dependent branches and without data-dependent array indices. We use these functions in NaCl to make our lives easier and the software better. We've done some other things in crypto as well.
Views: 569 Michail S
The ship has sailed: the NIST Post-Quantum Cryptography "competition"
 
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Invited talk by Dustin Moody at Asiacrypt 2017.
Views: 291 TheIACR
Invited Talk: Failures of secret key cryptography
 
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Invited talk by Daniel Bernstein at FSE 2013.
Views: 1984 TheIACR
Google Chrome is experimenting with Post-Quantum Cryptography
 
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Quantum computers are a fundamentally different sort of computer that take advantage of aspects of quantum physics to solve certain sorts of problems dramatically faster than conventional computers can. While the Quantum Computers will be very useful in various ways, they can create problems in some ways. Specifically, if large quantum computers can be built then they may be able to break the asymmetric cryptographic primitives that are currently used in TLS, the security protocol behind HTTPS. Quantum computers exist today but, for the moment, they are small and experimental, containing only a handful of quantum bits. It's not even certain that large machines will ever be built, although Google, IBM, Microsoft, Intel and others are working on it. Adiabatic quantum computers, like the D-Wave computer that Google operates with NASA, can have large numbers of quantum bits, but currently solve fundamentally different problems. However, a hypothetical, future quantum computer would be able to retrospectively decrypt any internet communication that was recorded today, and many types of information need to remain confidential for decades. Thus even the possibility of a future quantum computer is something that we should be thinking about today. The study of cryptographic primitives that remain secure even against quantum computers is called “post-quantum cryptography”. Google has announced an experiment in Chrome where a small fraction of connections between desktop Chrome and Google's servers will use a post-quantum key-exchange algorithm in addition to the elliptic-curve key-exchange algorithm that would typically be used. By adding a post-quantum algorithm on top of the existing one, Google is able to experiment without affecting user security. The post-quantum algorithm might turn out to be breakable even with today's computers, in which case the elliptic-curve algorithm will still provide the best security that today’s technology can offer. Alternatively, if the post-quantum algorithm turns out to be secure then it'll protect the connection even against a future, quantum computer. Google's aims with this experiment are to highlight an area of research that it believes to be important and to gain real-world experience with the larger data structures that post-quantum algorithms will likely require. There are many post-quantum algorithms available. Google selected a post-quantum algorithm named "New Hope” for this experiment. News Source: https://security.googleblog.com/2016/07/experimenting-with-post-quantum.html Related Video: IBM Quantum Experience allows anyone to access IBM's Quantum Computer over the Web https://www.youtube.com/watch?v=8VPwtlOwfGE Watch more #Technology News Videos at https://www.youtube.com/playlist?list=PLK2ccNIJVPpB_XqWWq_oaZGIDzmKiSkYc Buy T-Shirts and other Merchandise at https://shop.spreadshirt.com/QualityPointTech/
Tanja Lange
 
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Views: 300 DGE
Coins - Why these 5 Quantum Resistant Cryptos will be the coins to watch in 2018
 
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Classical Computers - Perform computations in binary, 1 or 0 - Run by transistors - Computer becomes twice as powerful for every new transistor added - Run all our cryptocurrencies, such as Bitcoin and Ethereum Quantum Computers - Perform computations in qubits, 1 AND 0 - Compute exponentially faster than classical computers - Able to break modern encryption, used in cryptocurrencies Multiverse Computation - Quantum Computer exists in all universes simultaneously - Solves all problems simultaneously, rather than in linear time Elliptic Curve Crypto - Runs all modern blockchains - May be defeated by Quantum Computer via Shor's Algorithm Current Progress - QCs were on show at CES 2018 - Google now has a 72 Qubit Machine, called Bristlecone - Microsoft also working on QCs for Public and Business use - NSA is transitioning US-Govt away from traditional encryption schemes Stronger Keys - Increasing private and public key length can protect against Shor's Algorithm Stronger Hashes - Increase hash length can protect against Grover's Algorithm Dynamic Keys - Have cryptocurrency reassign new keys everytime a transaction is sent - Makes QC bruteforcing the private key useless, as funds would have moved to new address Nexus (NXS) - Uses 571 bit private keys - 1024 bit Skein and Keccak hashes - Signature chain obscures your keys - Launching staking nodes to low-earth-orbit, Vector Space Systems Quantum Resistant Ledger (QRL) - Mainnet launch in Q3 - Implements XMSS (extended Merkle signature scheme), peer-reviewed post-quantum algorithm - Ledger Nano support upon mainnet launch Shield (XSH) - Multialgorithm PoW coin - PoS to come in Q3 of 2018 - Roadmap for post-quantum signatures such as BLISS or WINTERNITZ in Q4 2018 - Development consistently ahead of schedule - No premine Mochimo (CHI) - Community driven effort to beat Google's Quantum Computers before its too late - Information is limited, however developers contactable on Slack - Has a premine HCash (HSR) - Implementing BLISS signatures - New version of BLISS, more resistant to side-channel, 51% attacks, faster Bitcoin (BTC) - Signature and Hashing algorithms can be switched out (forked) to resist Quantum Computers Ethereum (ETH) - EIP 86 proposed that users should be able to choose any digital signature algorithm, including post-quantum ones *This video is not investment advice, please DYOR before investing any money in the cryptocurrency markets. Investing carries a high amount of financial risk, and may not be suitable for everyone* ===== For More Information: - Like & subscribe to this channel! - Join our Facebook,: http://fb.com/groups/cryptocircle - Download Presentation: http://bit.do/ego2N
Views: 358 CryptoCircle
What is RaiBlocks ($XRB)? DAG, Delegated POS, SHA3, and more
 
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FUNDAMENTALS Consensus Method (Work, Stake, Other hybrid, N/A): Stake. XRB is based on Directed Acyclic Graph, similar to IOTA. Senders and recipients order their own transactions (ie not miners) and have a balance weighted vote on conflicting transactions (Somewhat a delegated proof-of-stake model of consensus). Type (Infastructure, Dapp, Currency): Currency Open Source? Yes - https://github.com/clemahieu/raiblocks/ MVP / Prototype / Working Product? Yes, network and wallet established – code available Hasing Algorithm: SHA3/Blake2, ED25519 elliptical curve – some believe better than bitcoin’s curve - controversial Team (general impression): Small. Essentially spearheaded by lead dev Colin: https://www.linkedin.com/in/clemahieu/ Team listed here: https://raiblocks.net/page/aboutus.php Value Prop (why this needs a token / blockchain in one sentence): Solution to the ailments of bitcoin and other proof-of-work coins, providing unlimited transaction throughput (scalable, fast) with zero network fees. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Green Flags: • No ICO – distributed via solving captchas (faucets) • Project coded out of passion – no funding • Colin – lead dev – is an all-star – rich programming background including Dell, Amazon, AMD • Well written traditional whitepaper Yellow Flags: • Small team – essentially just Colin and community managers / web devs. Names and LinkedIn not available. • One of the first DAG cryptos – among DagCoin, Byteball, and IOTA – this is innovative but also new technology which could produce its own set of problems as it scales. o No cryptocurrency has been tested at the scale of BTC yet. Red Flags: None that I noticed (but keep in mind this wasn’t a full comprehensive review). If you know of any glaring flaws, please let me know in the comments! ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Other reviews: https://www.youtube.com/watch?v=CrkiVcxXfI4 https://www.youtube.com/watch?v=yMyB8ao8W9o https://www.youtube.com/watch?v=o8aLOAWiDio How to buy: https://www.youtube.com/watch?v=aWYTDa0yus8 Beginner’s guide: https://captainaltcoin.com/raiblocks-cryptocurrency/ ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ For updates, subscribe to my channel and/or follow me on your preferred platform(s): Content: ✦Twitter: https://twitter.com/Reedus33 ✦Steemit: https://steemit.com/@reedus ✦Medium: https://medium.com/@reedus Video: ✦DTube: https://d.tube/#!/c/reedus ✦Vimeo: https://vimeo.com/channels/thecryptoclub ✦YouTube: https://www.youtube.com/channel/UCtDl4hm6GkvbI0mHOBNfRrA ICO Rating Sites: ✦https://concourseq.io/U/CryptoReedus ✦https://icobench.com/u/cryptoreedus Altpocket: https://altpocket.io/user/CryptoReedus ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Patreon for anyone who would like to support me and get access to more exclusive content: https://www.patreon.com/reedus ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Get wicked crypto clothing: https://procrypto.net/ref/23/ ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 10% OFF the most comprehensive crypto portfolio tracker: https://cointracking.info?ref=R452552 Cheaper alternative (but less features): https://altpocket.io/?ref=XNt4PO6d9R ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Connect with or contact me: https://www.linkedin.com/in/reed33/ https://21.co/reedus/ ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Don’t forget to: 1. Press LIKE; 2. SHARE with others; 3. SUBSCRIBE to this channel; 4. COMMENT! ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ © 2018 The Crypto Club ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ #bitcoin #blockchain #crypto #cryptocurrency #investing #topcrypto #bestcrypto #ethereum #btc #eth #cryptodaily #topcryptoyoutubers #youtubechannel #steemit #technalysis #technicalanalysis #topcryptocurrency #topcryptocurrencytoinvest #topcrypto #topcryptocorrency2018 #topcryptocurrencytoinvestin2018 #bestcryptocurrencytoinvestin2018 #bestcryptocurrencytoinvest #bestcryptocurrency #bestcrypto #bestcryptocurrencytobuy #topcrypto2018 #topcryptotoinvest #bestcryptotoinvest #bitcoin #btc #ethereum #eth #neo #lisk #lsk #ark #cardano #navcoin #nav #ltc #ripple #cryptodaily #topcryptoyoutubers #bestcryptoyoutubers #youtubechannel
Views: 164 The Crypto Club
How to solve a 112-bit ECDLP using game consoles
 
01:00:38
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: 184 Microsoft Research
27C3 Talk by Dan Bernstein High speed,high security,cryptography,encrypting and authenticating
 
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27C3 Talk by Dan Bernstein High speed,high security,cryptography,encrypting and authenticating the internet
Views: 645 Phil Mccrackin
CCS 2016 - On the Provable Security of (EC)DSA Signatures
 
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Authors: Manuel Fersch, Eike Kiltz and Bertram Poettering (Ruhr University Bochum) presented at CCS 2016 - the 23rd ACM Conference on Computer and Communications Security (Hofburg Palace Vienna, Austria / October 24-28, 2016) - organized by SBA Research
Views: 241 CCS 2016
Introduction to Encryption and Decryption
 
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Data Encryption and Decryption. Encryption is the process of translating plain text data (plaintext) into something that appears to be random and meaningless (ciphertext). Decryption is the process of converting ciphertext back to plaintext. To encrypt more than a small amount of data, symmetric encryption is used. Videos in Tamil https://goo.gl/2sUk1B Videos in English https://goo.gl/TZdAvK YouTube channel link www.youtube.com/atozknowledgevideos Website http://atozknowledge.com/ Technology in Tamil & English
Views: 856 atoz knowledge
ShmooCon 2014: History of Bletchley Park and How They Invented Cryptography and the Computer Age
 
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For more information visit: http://bit.ly/shmooc14 To download the video visit: http://bit.ly/shmooc14_down Playlist Shmoocon 2014: http://bit.ly/shmooc14_pl Speaker: Benjamin Gatti In the darkest days of WWII, a small team assembled at Bletchley Park solved two problems and set a new course for computers and cryptography - fast computers, and secure communications can both be traced back to one of the ugliest estates in London suburbia, where Alan Turing, Max Newman, Tommy Flowers, and others hacked their way through the German High Command. The British released the General Report on Tunny in 2000, and since then have rebuilt a Colossus and Enigma Bombe and opened the Park as a museum. We discuss the cryptanalysis of the Enigma and Lorentz ciphers, historical exploits as well as modern exploits, and their direct connections to the modern crypto systems and highspeed computers on which the world as we know it is built.
Views: 1277 Christiaan008
ASIACRYPT 2016 - Wednesday, December 7
 
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9:00-9:50 Invited Lecture III Neal Koblitz, “Cryptography in Vietnam in the French and American Wars” Chair: Ngo Bao Chau 9:55-10:20 Invited to JoC Cliptography: Clipping the Power of Kleptographic Attacks; Alexander Russell; Qiang Tang; Moti Yung; Hong-Sheng Zhou Chair: Serge Vaudenay 10:20-10:50 Coffee Break R – track I – track Block Cipher I Chair: Palash Sarkar Functional and Homomorphic Cryptography Chair: Sarah Meiklejohn 10:50-11:15 ▪ Salvaging Weak Security Bounds for Blockcipher-Based Constructions; Thomas Shrimpton; R. Seth Terashima ▪ Multi-Key Homomorphic Authenticators; Dario Fiore; Aikaterini Mitrokotsa; Luca Nizzardo; Elena Pagnin 11:15-11:40 ▪ How to Build Fully Secure Tweakable Blockciphers from Classical Blockciphers; Lei Wang; Jian Guo; Guoyan Zhang; Jingyuan Zhao; Dawu Gu ▪ Multi-Input Functional Encryption with Unbounded-Message Security; Vipul Goyal; Aayush Jain; Adam O’Neill 11:40-12:05 ▪ Design Strategies for ARX with Provable Bounds: SPARX and LAX; Daniel Dinu; Léo Perrin; Aleksei Udovenko; Vesselin Velichkov; Johann Großschädl; Alex Biryukov ▪ Verifiable Functional Encryption; Saikrishna Badrinarayanan; Vipul Goyal; Aayush Jain; Amit Sahai 12:05-14:05 Lunch SCA and Leakage Resilience I Chair: Kris Gaj ABE and IBE Chair: Duncan Wong 14:05-14:30 ▪ Side-Channel Analysis Protection and Low-Latency in Action – case study of PRINCE and Midori; Amir Moradi; Tobias Schneider ▪ Dual System Encryption Framework in Prime-Order Groups via Computational Pair Encodings; Nuttapong Attrapadung 14:30-14:55 ▪ Characterisation and Estimation of the Key Rank Distribution in the Context of Side Channel Evaluations; Daniel P. Martin; Luke Mather; Elisabeth Osward; Martijin Stam ▪ Efficient IBE with Tight Reduction to Standard Assumption in the Multi-challenge Setting; Junqing Gong; Xiaolei Dong; Jie Chen; Zhenfu Cao 14:55-15:20 ▪ Taylor Expansion of Maximum Likelihood Attacks for Masked and Shuffled Implementations; Nicolas Bruneau; Sylvain Guilley; Annelie Heuser; Olivier Rioul; François-Xavier Standaert; Yannic Teglia ▪ Déjà Q All Over Again: Tighter and Broader Reductions of q-Type Assumptions; Melissa Chase; Mary Maller; Sarah Meiklejohn 15:20-15:45 ▪ Unknown-Input Attacks in the Parallel Setting: Improving the Security of the CHES 2012 Leakage-Resilient PRF; Marcel Medwed; François-Xavier Standaert; Ventzislav Nikov; Martin Feldhofer ▪ Partitioning via Non-Linear Polynomial Functions: More Compact IBEs from Ideal Lattices and Bilinear Maps; Shuichi Katsumata; Shota Yamada 15:45-16:15 Coffee Break Block Cipher II Chair: Takanori Isobe Foundation Chair: Eiichiro Fujisaki 16:15-16:40 ▪ A New Algorithm for the Unbalanced Meet-in-the-Middle Problem; Ivica Nikolić; Yu Sasaki ▪ How to Generate and use Universal Samplers; Dennis Hofheinz; Tibor Jager; Dakshita Khurana; Amit Sahai; Brent Waters; Mark Zhandry 16:40-17:05 ▪ Applying MILP Method to Searching Integral Distinguishers Based on Division Property for 6 Lightweight Block Ciphers; Zejun Xiang; Wentao Zhang; Zhenzhen Bao; Dongdai Lin ▪ Iterated Random Oracle: A Universal Approach for Finding Loss in Security Reduction; Fuchun Guo; Willy Susilo; Yi Mu; Rongmao Chen; Jianchang Lai; Guomin Yang 17:05-17:30 ▪ Reverse Cycle Walking and Its Applications; Sarah Miracle; Scott Yilek ▪ NIZKs with an Untrusted CRS: Security in the Face of Parameter Subversion; Mihir Bellare; Georg Fuchsbauer; Alessandra Scafuro 17:30-18:30 IACR Meeting 19:30 Conference Banquet
Views: 669 ASIACRYPT 2016
Using z3 to find a password and reverse obfuscated JavaScript - Fsec2017 CTF
 
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Recently I attended fsec 2017 in croatia. And there was a cool CTF challenge I solved during the conference that I wanted to share. script: https://gist.github.com/LiveOverflow/11bde6352f52be33864f1fd657e7cde1 -------------------------------------- Twitter: https://twitter.com/LiveOverflow Website: http://liveoverflow.com/ Subreddit: https://www.reddit.com/r/LiveOverflow/ Facebook: https://www.facebook.com/LiveOverflow/
Views: 26292 LiveOverflow
Daniele Micciancio - Lattice-based public-key cryptography #2
 
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Daniele Micciancio of the University of California, San Diego presented an invited talk on lattice-based public key cryptography at the 2014 PQCrypto summer school in October, 2014. This is part 2 of the talk. PQCrypto Summer School: https://pqcrypto2014.uwaterloo.ca/summer-school/ Find out more about IQC! Website - https://uwaterloo.ca/institute-for-qu... Facebook - https://www.facebook.com/QuantumIQC Twitter - https://twitter.com/QuantumIQC

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