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Winter School on Cryptography: Introduction to Lattices - Oded Regev
 
02:05:29
Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 21255 barilanuniversity
Winter School on Cryptography: Proving Hardness of LWE - Oded Regev
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 1878 barilanuniversity
Mathematical Ideas in Lattice Based Cryptography - Jill Pipher
 
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2018 Program for Women and Mathematics Topic: Mathematical Ideas in Lattice Based Cryptography Speaker: Jill Pipher Affiliation: Brown University Date: May 21, 2018 For more videos, please visit http://video.ias.edu
Winter School on Cryptography: Cryptanalysis of GGH and NTRU Signatures - Oded Regev
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 1726 barilanuniversity
IBM Research 5 in 5 Science Slam: Lattice Cryptography
 
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During the IBM Research 5 in 5 Science Slam at IBM Think 2018, IBM researcher Cecilia Boschini explains one of the technologies that will change the world in the next five years: lattice cryptography. Learn more at http://ibm.biz/five-in-five.
Views: 3261 IBM Research
Winter School on Cryptography: A History of Lattice-Based Encryption - Vadim Lyubashevsky
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 3616 barilanuniversity
lattices
 
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Views: 411 Jeff Suzuki
IBM Innovations of the Next Five Years - Blockchain, Lattice Cryptography, AI
 
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http://www.Motorward.com - Subscribe For More Cool Videos: https://goo.gl/2nkv2Z IBM predicts the technlogical innovations of the next five years in their annual 5 in 5 predictions for 2018. The main highlights include Blockchain, Lattice Cryptography, and AI. "Great scientific leaps rarely happen incrementally. They come from setting big, ambitious goals that move discovery forward. Think of the Wright brothers’ determination to fly, President John F. Kennedy’s pledge to put a man on the moon, or IBM Research’s resolve to build a computer that could understand spoken language and beat the greatest human champions on Jeopardy! The bigger the goal, the greater the impact on society. This approach has been a hallmark of IBM Research since our founding more than 70 years ago, and it is responsible for many world-changing inventions. In that spirit, today we’re renewing our annual “5 in 5” predictions about five technologies that we believe have the potential to change the way people work, live, and interact during the next five years. IBM Research began the 5 in 5 conversation a decade ago as a way to stimulate interest and discussion around some of the most exciting breakthroughs coming out of our labs. Then, as now, this effort was informed by the breadth of IBM’s unmatched expertise across systems, software, services, semiconductors and a wide swath of industries. Forecasting is always a tricky business, but over the past ten years many of our 5 in 5 predictions have proven highly accurate in spotting and accelerating emerging technologies. For example: In 2012, IBM Research predicted that computers would not only be able to look at pictures, but understand them. The field of computer vision has advanced rapidly over the last several years, to the point where our scientists have designed systems with a computational form of sight that can examine images of skin lesions and help dermatologists identify cancerous states. That same year, we projected that computers will “hear” what matters. Significant advances are being made in creating cognitive systems that can interpret and analyze sounds to create a holistic picture of our surroundings. Very recently, in collaboration with Rice University, IBM announced a sensor platform that can “see”, “listen”, and “talk” and aids senior citizen for staying healthy, mobile, and independent. Also in 2012, we envisioned digital taste buds that could help people to eat smarter. IBM researchers turned to the culinary arts to see if Watson, the world’s first cognitive computing system, could help cooks discover and create original recipes with the help of flavor compound algorithms. They trained Watson with thousands of recipes and learning about food pairing theories. Two years later, Chef Watson debuted at SXSW, followed by a web application for home cooks. In 2013, our scientists anticipated that doctors will routinely use your DNA to keep you well. Full DNA sequencing is on its way to becoming a routine procedure. The following year, New York Genome Center and IBM started a collaboration to analyze genetic data with Watson to accelerate the race to personalized, life-saving treatment for brain cancer patients. In 2015, IBM announced another collaboration with more than a dozen leading cancer institutes to accelerate the ability of clinicians to identify and personalize treatment options for their patients. For this year’s 5 in 5, we’re struck by the powerful implications of the ongoing effort to make the invisible world visible, from the macroscopic level down to the nanoscale. Innovation in this area could enable us to dramatically improve farming, enhance energy efficiency, spot harmful pollution before it’s too late, and prevent premature cognitive decline."
Views: 155 Motorward
Steven Galbraith - Challenges for Lattice Cryptography
 
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Title: Challenges for Lattice Cryptography Speaker: Steven Galbraith (University of Auckland) 7th International Conference on Post-Quantum Cryptography PQCrypto 2016 https://pqcrypto2016.jp/program/
Views: 723 PQCrypto 2016
34C3 -  LatticeHacks
 
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https://media.ccc.de/v/34c3-9075-latticehacks Fun with lattices in cryptography and cryptanalysis Lattices are an extremely useful mathematical tool for cryptography. This talk will explain the basics of lattices in cryptography and cryptanalysis. It’s an exciting time for public-key cryptography. With the threat of practical quantum computers looming in the next few decades, it’s high time to replace the systems that can be broken by a quantum computer with ones that remain secure even if the attacker has a quantum computer. However, this is easier said than done – there is no consensus what replacements should be chosen and how secure the systems are. NIST has just started a 5-7 year competition with the target to recommend a portfolio of post-quantum encryption and signature schemes. Considerations will be speed, bandwidth, and of course security. Several of the submissions are based on lattices. At our current level of understanding, lattice-based cryptography offers relatively small public keys for both encryption and signatures, while having good performance and reasonably sized ciphertexts and signatures. While these features are nice and make us want to know more about lattices, that world can be a scary place full of discussions of Minkowski bounds, Gaussian distributions, and orthogonalized bases. We will show how these schemes work in accessible terms. Lattices have been used in cryptography for more than thirty years, but for most of that only as a tool to attack systems, starting with knapsack systems in the early 80’s. Lattices can also be used to break conventional public-key cryptosystems such as RSA or Diffie-Hellman when they are incorrectly implemented. This talk will explain these fun attacks in concrete terms, with code you can run at home. Algorithms will be presented as Python/Sage code snippets and will already be online before the talk at https://latticehacks.cr.yp.to. This is a joint presentation by Daniel J. Bernstein, Nadia Heninger, and Tanja Lange, surveying work by many people. djb Tanja Lange Nadia Heninger https://fahrplan.events.ccc.de/congress/2017/Fahrplan/events/9075.html
Views: 2607 media.ccc.de
Vinod Vaikuntanathan - Lattices and Cryptography:  A Match Made in Heaven
 
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Vinod Vaikuntanathan of the University of Toronto presented a talk titled: Lattices and cryptography: A match made in heaven at the 2014 PQCrypto conference in October, 2014. 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
Daniele Micciancio - Lattice-based public-key cryptography
 
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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. 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
CCS 2016 - ΛОλ: Functional Lattice Cryptography
 
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Authors: Eric Crockett (Georgia Institute of Technology) and Chris Peikert (University of Michigan) 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: 245 CCS 2016
Winter School on Cryptography: Ideal Lattices and Applications - Vadim Lyubashevsky
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 2764 barilanuniversity
Cryptographic Algorithms and Secure Hardware
 
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Prof. François-Xavier Standaert summarizes the results of his ERC starting grant on cryptographic algorithms and secure hardware. More details on: http://perso.uclouvain.be/fstandae/erc.html Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM) http://www.uclouvain.be/en-icteam.html Ecole Polytechnique de Louvain (EPL) http://www.uclouvain.be/epl.html Universite catholique de Louvain (UCL) http://www.uclouvain.be
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
Winter School on Cryptography: Learning With Errors - Chris Peikert
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 6950 barilanuniversity
Cryptography Tools
 
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Views: 17929 RadwanoVetch
Cryptography Research
 
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Cryptography Research IBM and the Future of Cyber Security By 2011, the world will be 10 times more instrumented than it was in 2006. Internet connected devices will leap from 500 Million to 1 Trillion. Approximately 70% of the digital universe is created by individuals, but enterprises are responsible for 85% of the security, privacy, reliability, and compliance. Increasingly, the proliferation of data-generating sensors and mobile computing devices, and the emergence of new forms of communication such as social networking, are driving unprecedented growth in the collection, storage and management of all types of data. Not surprisingly, this phenomenon has sparked growing demand for the ability to extract intelligence from these massive mountains of information—intelligence that can enable organizations to improve their decision-making and run their businesses more effectively and efficiently. With this capacity to rapidly sift thru data and gain new insights comes a significant challenge and responsibility when it comes to personal information, or information that relates to identifiable individuals: how to enable the exchange and analysis of data, while protecting privacy. IBM has long recognized the importance of information privacy and led by example in its own privacy polices and practices: the company was the first multinational to adopt a global privacy policy in the late 1960s, and continued that leadership as recently as 2005 when it was the first company to address genetic privacy. But policies and practices are not enough on their own to address the privacy challenges of an increasingly smarter planet. Thoughtfully-designed technologies can play a key role here, part of a paradigm that some are calling Privacy by Design. As the world becomes smarter and more interconnected, the capacity to rapidly sift through data to gain new insights brings with it a significant challenge and responsibility when it comes to personal information. How do we enable the exchange and analysis of data, while protecting privacy? IBM, which in the 1960s because the first multinational to adopt a global privacy policy and in 2005 was the first to address genetic privacy, has long recognized the importance of information privacy. Leading by example in its own privacy polices and practices, IBM has also received many patents for inventions that support our commitment to privacy leadership. For example, an IBM Researcher has solved a thorny mathematical problem that has confounded scientists since the invention of public-key encryption several decades ago. The breakthrough, called "privacy homomorphism," or "fully homomorphic encryption," makes possible the deep and unlimited analysis of encrypted information -- data that has been intentionally scrambled -- without sacrificing confidentiality. IBM's solution, formulated by IBM Researcher Craig Gentry, uses a mathematical object called an "ideal lattice," and allows people to fully interact with encrypted data in ways previously thought impossible. With the breakthrough, computer vendors storing the confidential, electronic data of others will be able to fully analyze data on their clients' behalf without expensive interaction with the client, and without seeing any of the private data. With Gentry's technique, the analysis of encrypted information can yield the same detailed results as if the original data was fully visible to all. Using the solution could help strengthen the business model of "cloud computing," where a computer vendor is entrusted to host the confidential data of others in a ubiquitous Internet presence. It might better enable a cloud computing vendor to perform computations on clients' data at their request, such as analyzing sales patterns, without exposing the original data. Other potential applications include enabling filters to identify spam, even in encrypted email, or protecting information contained in electronic medical records. The breakthrough might also one day enable computer users to retrieve information from a search engine with more confidentiality http://asmarterplanet.com/
Views: 13361 Social Media
Daniele Micciancio - Cryptography developments
 
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Daniele Micciancio is a professor of computer science at the University of California, San Diego. As a leader in the field of lattice based cryptography and computational complexity, his research has focused heavily on fully homomorphic encryption and its challenges. Micciancio was visiting IQC for PQCrypto 2014, the 6th international conference on post-quantum cryptography (https://pqcrypto2014.uwaterloo.ca/). Find out more about IQC! Website - https://uwaterloo.ca/institute-for-quantum-computing/ Facebook - https://www.facebook.com/QuantumIQC Twitter - https://twitter.com/QuantumIQC Micciancio explains fully homomorphic encryption and how it relates to his group work on latice algorithms.
:3rd BIU Winter School on Cryptography: Anonymous Credentials and eCash - Anna Lysyanskaya
 
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The 3rd Bar-Ilan Winter School on Cryptography: Bilinear Pairings in Cryptography, which was held between February 4th - 7th, 2013. The event's program: http://crypto.biu.ac.il/winterschool2013/schedule2013.pdf For All 2013 Winter school Lectures: http://www.youtube.com/playlist?list=PLXF_IJaFk-9C4p3b2tK7H9a9axOm3EtjA&feature=mh_lolz Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 1025 barilanuniversity
Nicolas Sendrier - Code-based public-key cryptography
 
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Nicolas Sendrier of the French Institute for Research in Computer Science and Automation presented an invited talk on code-based public-key cryptography at the 2014 PQCrypto summer school in October, 2014. 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
Winter School on Cryptography: Fully Homomorphic Encryption - Craig Gentry
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 7709 barilanuniversity
Stefan Marsiske – Post-quantum is the new cyber!!5!
 
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https://www.hacktivity.com Are we living in post-Snowden crypto-bubble? This talk tries to burst it. Do you trust PGP? What happens to our secrets post-quantum? Are you post-quantum? How can we make our journalists, our NGOs and our own secrets post-quantum? This is about crypto-fails and crypto-wins. It's also a bit about crypto wars. Post-Snowden we have seen tsunami of military-grade cyber-crypto projects. We have all kind of encrypted chats, also axolotls, crypto regulation, global adversaries, less-global adversaries with commercial malware, we have a lot of stuff. In this talk I try to give a broad overview of the older and newer projects. This talk is also a about how to try to fix all this. One attempt is project: PITCHFORK - a free HW/SW crypto device, that has the potential to become 1/ a popular hacking target 2/ a popular platform for a "swiss-army crypto-tool". As an open platform it is really fun to break it and to build it, I hope to inspire you to play with it yourself.
Views: 159 hacktivity
Winter School on Cryptography: Trapdoors and Applications - Chris Peikert
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 2409 barilanuniversity
Predicate Encryption for Inner Products from LWE
 
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Crypto 2011 Rump session presentation for Shweta Agrawal, David Freeman, Vinod Vaikuntanathan, talk given by Shweta Agrawal
Views: 436 TheIACR
Webcast: NTRU - A Secure, High Performance Alternative to RSA or ECC
 
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This webcast, presented by William Whyte (Chief Scientist, Security Innovation) and Chris Conlon (Software Developer, wolfSSL Inc) discusses how the lattice-based NTRU algorithm works, some of its features and benefits, and the process of migrating from RSA to NTRU
Views: 1312 Security Innovation
The Mathematics of Lattices I
 
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Vinod Vaikuntanathan, Massachusetts Institute of Technology Cryptography Boot Camp http://simons.berkeley.edu/talks/vinod-vaikuntanathan-2015-05-18a
Views: 9740 Simons Institute
Johannes A. Buchmann - Post-Quantum Cryptography – an overview
 
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Tutorial Talk 4 by Johannes A. Buchmann at 5th International Conference on Quantum Cryptography (QCrypt 2015) in Hitotsubashi Hall, Tokyo, October 2nd, 2015. Download the slides at: http://2015.qcrypt.net/scientific-program/
Views: 3773 QCrypt 2015
Winter School on Cryptography: Reduction for Sis - Vadim Lyubashevsky
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 3528 barilanuniversity
Winter School on Cryptography: Basic Cryptanalysis - Vadim Lyubashevsky
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 2864 barilanuniversity
Winter School on Cryptography: Fully Homomorphic Encryption - Craig Gentry
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 2795 barilanuniversity
Winter School on Cryptography: Fully Homomorphic Encryption and the Bootstrapping - Craig Gentry
 
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Winter School on Lattice-Based Cryptography and Applications, which took place at Bar-Ilan University between february 19 - 22. The event's program: http://crypto.biu.ac.il/winterschool2012/ Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 2755 barilanuniversity
3rd BIU Winter School on Cryptography: Identity-Based Encryption and Variants - Dan Boneh
 
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The 3rd Bar-Ilan Winter School on Cryptography: Bilinear Pairings in Cryptography, which was held between February 4th - 7th, 2013. The event's program: http://crypto.biu.ac.il/winterschool2013/schedule2013.pdf For All 2013 Winter school Lectures: http://www.youtube.com/playlist?list=PLXF_IJaFk-9C4p3b2tK7H9a9axOm3EtjA&feature=mh_lolz Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 5835 barilanuniversity
3rd BIU Winter School on Cryptography:The Basics of Pairings - Dan Boneh
 
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The 3rd Bar-Ilan Winter School on Cryptography: Bilinear Pairings in Cryptography, which was held between February 4th - 7th, 2013. The event's program: http://crypto.biu.ac.il/winterschool2013/schedule2013.pdf For All 2013 Winter school Lectures: http://www.youtube.com/playlist?list=PLXF_IJaFk-9C4p3b2tK7H9a9axOm3EtjA&feature=mh_lolz Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 7708 barilanuniversity
Cryptography Best Practices - Bart Preneel
 
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Application architects need to make informed choices to use cryptography well: + Alternative key architectures have their merits and drawbacks. PKIs, in particular, should be contrasted with symmetric key architectures such as Kerberos. + Network protocol characteristics are pivotal in ensuring distributed applications meet security requirements. Key strength choices impact on security guarantees offered, as do cryptographic algorithm modes. + While strong keys and wise use of cryptographic algorithms may thwart cryptanalytic attack, applications are insecure without prudent key management. In this context, key generation and key storage require particular attention. + The selection of crypto-libraries requires awareness of inherent library qualities and failures. Application developers are advised not to implement their own. Learning objectives + decide if and when cryptography should be used. + make informed key architecture and management decisions. + use appropriate algorithms and parameters. + select an appropriate cryptographic library. + choose network protocols for distributed applications. This lecture was delivered by Bart Preneel at SecAppDev 2013 in Leuven, Belgium. Professor Bart Preneel of KU Leuven heads the COSIC (COmputer Security and Industrial Cryptography) research group. His main research area is information security with a focus on cryptographic algorithms and protocols as well as their applications to both computer and network security, and mobile communications. He teaches cryptology, network security and coding theory at the KU Leuven and was visiting professor at the Ruhr Universitaet Bochum (Germany), the T.U.Graz (Austria), the University of Bergen (Norway), and the Universiteit Gent (Belgium). In '93-'94 he was a research fellow at the University of California at Berkeley. He has taught intensive courses around the world. He undertakes industrial consulting (Mastercard International, S.W.I.F.T., Proton World International,...), and participates in the work of ISO/IEC JTC1/SC27/WG2. Professor Preneel is Vice President of the International Association for Cryptologic Research (IACR) and co-founder and chairman of LSEC vzw (Leuven Security Excellence Consortium).
Views: 2851 secappdev.org
Cryptography in Vietnam in the French and American Wars
 
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Invited talk at Asiacrypt 2016 by Neal Koblitz.
Views: 361 TheIACR
Masahide Sasaki - Quantum Key Distribution Platform and Its Applications
 
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Title: Quantum Key Distribution Platform and Its Applications Speaker: Masahide Sasaki 7th International Conference on Post-Quantum Cryptography PQCrypto 2016 https://pqcrypto2016.jp/program/
Views: 166 PQCrypto 2016
The Cryptographic Lens: Visions of our Past and Future
 
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Shafi Goldwasser, MIT Symposium on Visions of the Theory of Computing, May 30, 2013, hosted by the Simons Institute for the Theory of Computing at UC Berkeley.
Views: 1542 Simons Institute
Cryptology: The Nahavo Code
 
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Enjoy... Or else. -_-
Views: 61 Charlie Cain
Breaking a Fully Homomorphic Cryptosystem Based on Factorization
 
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Alina Trepacheva, a postgraduate student of Southern Federal University More: http://www.phdays.com/program/ys/#2
Implementing Conjunction Obfuscation under Entropic Ring LWE
 
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Implementing Conjunction Obfuscation under Entropic Ring LWE Yuriy Polyakov (NJIT Cybersecurity Research Center, New Jersey Institute of Technology) Presented at the 2018 IEEE Symposium on Security & Privacy May 21–23, 2018 San Francisco, CA http://www.ieee-security.org/TC/SP2018/ ABSTRACT We address the practicality challenges of secure program obfuscation \revised{by implementing, optimizing, and experimentally assessing an approach to securely obfuscate conjunction programs proposed in [1]. Conjunction programs evaluate functions $f\left(x_1,\ldots,x_L\right) = \bigwedge_{i \in I} y_i$, where $y_i$ is either $x_i$ or $\lnot x_i$ and $I \subseteq \left[L\right]$, and can be used as classifiers. Our obfuscation approach satisfies distributional Virtual Black Box (VBB) security based on reasonable hardness assumptions, namely an entropic variant of the Ring Learning with Errors (Ring-LWE) assumption. Prior implementations of secure program obfuscation techniques support either trivial programs like point functions, or support the obfuscation of more general but less efficient branching programs to satisfy Indistinguishability Obfuscation (IO), a weaker security model. Further, the more general implemented techniques, rather than relying on standard assumptions, base their security on conjectures that have been shown to be theoretically vulnerable. Our work is the first implementation of non-trivial program obfuscation based on polynomial rings. Our contributions include multiple design and implementation advances resulting in reduced program size, obfuscation runtime, and evaluation runtime by many orders of magnitude. We implement our design in software and experimentally assess performance in a commercially available multi-core computing environment. Our implementation achieves runtimes of 6.7 hours to securely obfuscate a 64-bit conjunction program and 2.5 seconds to evaluate this program over an arbitrary input. We are also able to obfuscate a 32-bit conjunction program with \revised{53 bits} of security in 7 minutes and evaluate the obfuscated program in 43 milliseconds on a commodity desktop computer, which implies that 32-bit conjunction obfuscation is already practical. Our graph-induced (directed) encoding implementation runs up to 25 levels, which is higher than previously reported in the literature for this encoding. Our design and implementation advances are applicable to obfuscating more general compute-and-compare programs and can also be used for many cryptographic schemes based on lattice trapdoors.
3rd BIU Winter School on Cryptography: Opening Remarks - Yehuda Lindell
 
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The 3rd Bar-Ilan Winter School on Cryptography: Bilinear Pairings in Cryptography, which was held between February 4th - 7th, 2013. The event's program: http://crypto.biu.ac.il/winterschool2013/schedule2013.pdf For All 2013 Winter school Lectures: http://www.youtube.com/playlist?list=PLXF_IJaFk-9C4p3b2tK7H9a9axOm3EtjA&feature=mh_lolz Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 4269 barilanuniversity
Simple cubic python code
 
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Brief tutorial on writing a python script to generate a simple cubic lattice
Views: 983 Isaac Tamblyn
Boolean Operations performed by Polygonica Software
 
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www.polygonica.com Boolean operations being performed on Polygonica mesh processing software. Including Lattice infill and the union of multiple objects. Calculations of intersection curves and volume, generation of lattice infill with robust offset and Boolean operations.
Views: 223 Polygonica Software
On the Indifferentiability of Key-Alternating Ciphers
 
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Talk at crypto 2013. Authors: Elena Andreeva, Andrey Bogdanov, Yevgeniy Dodis, Bart Mennink, John P. Steinberger
Views: 909 TheIACR
3rd BIU Winter School on Cryptography: Non-Interactive Zero Knowledge from Pairings - Jens Groth
 
01:53:28
The 3rd Bar-Ilan Winter School on Cryptography: Bilinear Pairings in Cryptography, which was held between February 4th - 7th, 2013. The event's program: http://crypto.biu.ac.il/winterschool2013/schedule2013.pdf For All 2013 Winter school Lectures: http://www.youtube.com/playlist?list=PLXF_IJaFk-9C4p3b2tK7H9a9axOm3EtjA&feature=mh_lolz Dept. of Computer Science: http://www.cs.biu.ac.il/ Bar-Ilan University: http://www1.biu.ac.il/indexE.php
Views: 1587 barilanuniversity
When Cryptography is not the Answer even when it is - Orr Dunkelman Technion lecture
 
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Dr. Orr Dunkelman of Haifa University Lecture at TCE Summer School 2013, July 25, 2013 When Cryptography is not the Answer (even when it is) Since modern cryptography has emerged in the mid 70's, it developed a huge set of solutions to many of the security problems: from secure algorithms for communication, to identification of entities, from integrity assurance for programs, to methods for evaluating a function without revealing it. Despite these advances, even the security challenges that were solved by cryptography are still affecting our everyday life: from using old and insecure algorithms, through key management issues, to problems in the interaction between the cryptography and the system where it resides. In this talk we shall consider several examples of such issues, of the gaps between "what is already solved by cryptographers" and "what the security professionals see as unsolved (if not unsolvable)". We will try to isolate the sources for such problems, and look for the changes, both in the technical level and in the perception level, needed from both sides of the security equation (cryptographers and security professionals), to overcome these issues in the future.
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