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McEliece and Niederreiter Cryptosystems That Resist Quantum Fourier Sampling Attacks
 
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Talk at crypto 2011. Authors: Alexander Russell, Hang Dinh, Cristopher Moore. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=23607
Views: 1763 TheIACR
QcBits  constant time small key code based cryptography
 
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Tung Chou, CHES 2016. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=27846
Views: 218 TheIACR
Bi-Deniable Public-Key Encryption
 
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Talk at crypto 2011. Authors: Chris Peikert, Brent Waters, Adam O'Neill. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=23594
Views: 820 TheIACR
Ray Perlner - Optimizing Information Set Decoding Algorithms to Attach Cyclosymmetric MDPC Codes
 
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Ray Perlner of the National Institute of Standards and Technology presented a talk titled: Optimizing information set decoding algorithms to attack cyclosymmetric MDPC codes at the 2014 PQCrypto conference in October, 2014. Abstract: Recently, several promising approaches have been proposed to reduce keysizes for code based cryptography using structured, but non-algebraic codes, such as quasi-cyclic (QC) Moderate Density Parity Check (MDPC) codes. Biasi et al. propose further reducing the keysizes of code-based schemes using cyclosymmetric (CS) codes. While Biasi et al. analyze the complexity of attacking their scheme using standard information-set-decoding algorithms, the research presented here shows that information set decoding algorithms can be improved, by choosing the columns of the information set in a way that takes advantage of the added symmetry. The result is an attack that significantly reduces the security of the proposed CS-MDPC schemes to the point that they no longer offer an advantage in keysize over QC-MDPC schemes of the same security level. QC-MDPC schemes are not affected by this paper's result. 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
Post quantum signatures | Melissa Chase (Microsoft Research) | RWC 2018
 
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Technical talks from the Real World Crypto conference series.
Views: 736 Real World Crypto
To Hash or Not to Hash Again? (In)Differentiability Resu ...
 
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Talk at crypto 2012. Authors: Yevgeniy Dodis, Thomas Ristenpart, John P. Steinberger, Stefano Tessaro. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=24297
Views: 269 TheIACR
CCS 2016 - Frodo: Take off the ring! Practical, Quantum-Secure Key Exchange from LWE
 
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Authors: Joppe Bos (NXP Semiconductors), Craig Costello (Microsoft Research), Léo Ducas (CWI), Ilya Mironov (Google), Michael Naehrig (Microsoft Research), Valeria Nikolaenko (Stanford University), Ananth Raghunathan (Google) and Douglas Stebila (McMaster University) 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: 609 CCS 2016
Authenticated and Misuse-Resistant Encryption of Key-Dependent Data
 
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Talk at crypto 2011. Authors: Mihir Bellare, Sriram Keelveedhi. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=23599
Views: 433 TheIACR
Position-Based Quantum Cryptography: Impossibility and Constructions
 
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Talk at crypto 2011. Authors: Serge Fehr, Rafail Ostrovsky, Vipul Goyal, Christian Schaffner, Nishanth Chandran, Ran Gelles, Harry Buhrman. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=23588
Views: 644 TheIACR
Code
 
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In communications and information processing, code is system of rules to convert information—such as a letter, word, sound, image, or gesture—into another, sometimes shortened or secret, form or representation for communication through a channel or storage in a medium. An early example is the invention language, which enabled a person, through speech, to communicate what he or she saw, heard, felt, or thought to others. But speech limits the range of communication to the distance a voice can carry, and limits the audience to those present when the speech is uttered. The invention of writing, which converted spoken language into visual symbols, extended the range of communication across space and time. The process of encoding converts information from a source into symbols for communication or storage. Decoding is the reverse process, converting code symbols back into a form that the recipient understands. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 38 Audiopedia
Teaser Mooc "Code-Based Cryptography"
 
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This course will be taught by Irène Marquez-Corbella, Nicolas Sendrier from the SECRET Team (Inria) and Matthieu Finiasz (CryptoExpert). The objective of this course is to present the state of the art of cryptosystems. This MOOC covers the essentials that you should know about this hot topic in Cryptography and Coding Theory: the security-reduction proofs, the possible attacks, several proposals to reduce the key-size, etc. The course will be available on France Université Numérique FUN platform.
Views: 797 InriaChannel
Polar FEC Codes Running at Hundreds of Mbit/s in GNU Radio
 
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Pascal Giard - Polar FEC Codes Running at Hundreds of Mbit/s in GNU Radio
Views: 524 GNU Radio
Secure Network Coding over the Integers.
 
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Talk at pkc 2010. Authors: Rosario Gennaro, Jonathan Katz, Hugo Krawczyk, Tal Rabin. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=23403
Views: 231 TheIACR
Kai-Min Chung - Randomness Extraction beyond the Classical World
 
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Invited Talk 1 by Kai-Min Chung at 5th International Conference on Quantum Cryptography (QCrypt 2015) in Hitotsubashi Hall, Tokyo, September 29th, 2015. Download the slides at: http://2015.qcrypt.net/scientific-program/
Views: 136 QCrypt 2015
WHAT IS SKIPJACK DIME? IS SKIPJACK IS WORTH INVESTING IN?
 
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In cryptography, Skipjack is a block cipher, an encryption for transmission of information. It uses a Diffie-Hellman key exchange algorithm for distribution of the cryptographic session keys between peers. This tech is said to be developed by U.S. National Security Agency (NSA) but that’s by the way. In this post, I will be making more reference to Skipjack dime itself. You can read more about Skipjack (cipher) algorithm on Wikipedia. https://en.wikipedia.org/wiki/Skipjack_(cipher) Skipjack was born from the weakness of crypto currency. It is a global digital currency and the world’s first secure global encrypt currency in the form of digital to be traded in international financial markets by 2019 and it will be used by more than 50,000 members in a 2018 world conference service, Digital World Congress , to buy, share, and trade knowledge, goods, and services. The value of SJK is determined on the supply and demand plus financial markets from a basket of underlying asset in the form of currencies, commodities and carbon futures. As long this digital currency is getting famous global worldwide, i think now is worth investing. More information about skipjack, and how to buy skipjack, get it here www.skipjackx.com
Views: 342 zhangehe111
The ship has sailed: the NIST Post-Quantum Cryptography "competition"
 
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Invited talk by Dustin Moody at Asiacrypt 2017.
Views: 350 TheIACR
Leftover Hash Lemma, Revisited (Crypto 2011)
 
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Talk at Crypto 2011, August 15, 2011. Boaz Barak, Yevgeniy Dodis, Hugo Krawczyk, Olivier Pereira, Krzysztof Pietrzak, François-Xavier Standaert, and Yu Yu Microsoft Research New England; New York University; IBM Research; Université Catholique de Louvain; CWI Amsterdam; Université Catholique de Louvain;and East China Normal University Abstract. The famous Leftover Hash Lemma (LHL) states that (almost) universal hash functions are good randomness extractors. Despite its numerous applications, LHL-based extractors suffer from the following two drawbacks: Large Entropy Loss: to extract $v$ bits from distribution $X$ of min-entropy $m$ which are $\epsilon$-close to uniform, one must set $v \le m - 2*\log(1/\epsilon)$, meaning that the entropy loss $L = m-v \ge 2*\log(1/\epsilon)$. Large Seed Length: the seed length $n$ of (almost) universal hash function required by the LHL must be at least $n \ge \min(u-v, v + 2*\log(1/\epsilon))-O(1)$, where $u$ is the length of the source. Quite surprisingly, we show that both limitations of the LHL — large entropy loss and large seed — can often be overcome (or, at least, mitigated) in various quite general scenarios. First, we show that entropy loss could be reduced to $L = \log (1/\epsilon)$ for the setting of deriving secret keys for a wide range of cryptographic applications. Specifically, the security of these schemes with an LHL-derived key gracefully degrades from $\epsilon$ to at most $\epsilon+\sqrt{\epsilon 2^{-L}}$. (Notice that, unlike standard LHL, this bound is meaningful even when one extracts more bits than the min-entropy we have!) Based on these results we build a general computational extractor that enjoys low entropy loss and can be used to instantiate a generic key derivation function for any cryptographic application. Second, we study the soundness of the natural expand-then-extract approach, where one uses a pseudorandom generator (PRG) to expand a short "input seed" $S$ into a longer "output seed" $S'$, and then use the resulting $S'$ as the seed required by the LHL (or, more generally, by any randomness extractor). We show that, in general, the expand-then extract approach is not sound if the Decisional Diffie-Hellman assumption is true. Despite that, we show that it is sound either: (1) when extracting a "small" (logarithmic in the security of the PRG) number of bits; or (2) in minicrypt. Implication (2) suggests that the expand-then-extract approach is likely secure when used with "practical" PRGs, despite lacking a reductionist proof of security! See http://www.iacr.org/cryptodb/data/paper.php?pubkey=23565
Views: 1711 TheIACR
Confidentiality In A Post Quantum World: the case of LEDAkem and LEDApkc
 
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A Google TechTalk, 2018-12-05, presented by Alessandro Barenghi ABSTRACT: This talk will present LEDAkem and LEDApkc, a key agreement scheme and a public key encryption scheme resistant against attacks with both classical and quantum computers. In this talk I will present the schemes and report recent results on how we can automatically generate key sizes and cryptosystem parameters tailored for a desired security level, providing practical performance figures. About the speaker: Alessandro Barenghi is currently assistant professor at Politecnico di Milano, and one of the proposers of the LEDAkem/LEDApkc cryptoschemes to the NIST post-quantum standardization initiative.
Views: 982 GoogleTechTalks
Public-Key Identification Schemes Based on Multivariate Quadratic Polynomials
 
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Talk at crypto 2011. Authors: Taizo Shirai, Koichi Sakumoto, Harunaga Hiwatari. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=23604
Views: 549 TheIACR
Post-quantum cryptography | Wikipedia audio article
 
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This is an audio version of the Wikipedia Article: https://en.wikipedia.org/wiki/Post-quantum_cryptography 00:01:45 1 Algorithms 00:01:59 1.1 Lattice-based cryptography 00:02:55 1.2 Multivariate cryptography 00:03:30 1.3 Hash-based cryptography 00:04:52 1.4 Code-based cryptography 00:05:42 1.5 Supersingular elliptic curve isogeny cryptography 00:06:54 1.6 Symmetric key quantum resistance 00:07:41 2 Security reductions 00:08:22 2.1 Lattice-based cryptography – Ring-LWE Signature 00:09:15 2.2 Lattice-based cryptography – NTRU, BLISS 00:09:55 2.3 Multivariate cryptography – Rainbow 00:10:29 2.4 Hash-based cryptography – Merkle signature scheme 00:11:19 2.5 Code-based cryptography – McEliece 00:11:49 2.6 Code-based cryptography – RLCE 00:12:19 2.7 Supersingular elliptic curve isogeny cryptography 00:12:53 3 Comparison 00:13:59 3.1 Lattice-based cryptography – LWE key exchange and Ring-LWE key exchange 00:15:27 3.2 Lattice-based Cryptography – NTRU encryption 00:16:10 3.3 Multivariate cryptography – Rainbow signature 00:16:52 3.4 Hash-based cryptography – Merkle signature scheme 00:17:18 3.5 Code-based cryptography – McEliece 00:23:35 3.6 Supersingular elliptic curve isogeny cryptography 00:24:41 3.7 Symmetric–key-based cryptography 00:25:26 4 Forward secrecy 00:26:50 5 Open Quantum Safe project 00:27:46 6 Implementation 00:28:18 7 See also Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. Listen on Google Assistant through Extra Audio: https://assistant.google.com/services/invoke/uid/0000001a130b3f91 Other Wikipedia audio articles at: https://www.youtube.com/results?search_query=wikipedia+tts Upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts "There is only one good, knowledge, and one evil, ignorance." - Socrates SUMMARY ======= Post-quantum cryptography (sometimes referred to as quantum-proof, quantum-safe or quantum-resistant) refers to cryptographic algorithms (usually public-key algorithms) that are thought to be secure against an attack by a quantum computer. As of 2018, this is not true for the most popular public-key algorithms, which can be efficiently broken by a sufficiently strong hypothetical quantum computer. The problem with 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 lack processing power to break 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. See section on symmetric-key approach below.
Views: 3 wikipedia tts
Claude Crépeau Lecture 4
 
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Professor Claude Crépeau of McGill University presents the fourth lecture focused on Integers based cryptography -- specifically lattices. This lecture was part of a series of four lectures during Spring 2013. Find out more about IQC! Website - https://uwaterloo.ca/institute-for-quantum-computing/ Facebook - https://www.facebook.com/QuantumIQC Twitter - https://twitter.com/QuantumIQC
Public Key Infrastructure  PKI   High impact Strategies   What You Need to Know  Definitions  Adopti
 
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https://store.theartofservice.com/public-key-infrastructure-pki-high-impact-strategies-what-you-need-to-know-definitions-adoptions-impact-benefits-maturity-vendors.html In cryptography, a PKI is an arrangement that binds public keys with respective user identities by means of a certificate authority (CA). ...In easy to read chapters, with extensive references and links to get you to know all there is to know about Public Key Infrastructure (PKI) right away, covering: Public key infrastructure, CA/Browser Forum, Certificate authority, Certificate server, Certificate-based encryption, Coppersmith's Attack, Decisional composite residuosity assumption, Detached signature, Digital signature, Digital Signature Algorithm, Domain Name System Security Extensions, ElGamal encryption, Hyperelliptic curve cryptography, Intermediate certificate authorities, Jumbleme (digital encryption service), KCDSA, Keystore, McEliece crypto system, Merkle-Hellman knapsack crypto system, MQV, Niederreiter crypto system, Non-repudiation, Online Certificate Status Protocol, Paillier crypto system, PKCS, Pretty Good Privacy, Public key certificate, Public-key cryptography, Rabin crypto system, Rabin signature algorithm, Resource Public Key Infrastructure, Revocation list, Root certificate, RSA, RSA problem, RSA/Intuitive, SAFE-BioPharma Association, Self-signed certificate, Signcryption, Strong RSA assumption, Trusted third party, U-Prove, Web of trust, Wiener's Attack, Wireless Public Key Infrastructure, X.509, Key management, 40-bit encryption, AACS encryption key controversy, AN/CYZ-10, AN/PYQ-10, ASC X9, CCMP, CDMF, Certificate policy, Computational trust, Cryptographic key types, Cryptoperiod, Derived unique key per transaction, Ephemeral key, Extended Validation Certificate, Fill device, Internet Security Association and Key Management Protocol, Key (cryptography), Key authentication, Key Ceremony, Key clustering, Key derivation function, Key distribution, Key distribution center, Key encapsulation, Key escrow, Key fob, Key generation, Key generator, Key server (cryptographic), Key signature (cryptography), Key signing party, Key size, Key space (cryptography), Key stretching, Key whitening, Keychain, Keyfile, Keymat, Keysigning, KOI-18, KSD-64, KSV-21, KYK-13, List of cryptographic key types, Offline private key, Pre-shared key, Quantum digital signature, Racoon (KAME), Rijndael key schedule, Robot certificate authority, Secret sharing, Secure DTD2000 System, Secure key issuing cryptography, Self-certifying key, Session key, Shared secret, Signal operating instructions, Simple Key-Management for Internet Protocol, Simple public key infrastructure, Ssh-agent, Static key, Temporal Key Integrity Protocol, Texas Instruments signing key controversy, Ticket Granting Ticket, Trust anchor, Trusted paper key, Uf-cma, VeriSign Secured Seal, Weak key, Zeroisation, Benaloh crypto system, Bilateral key exchange, Blum-Goldwasser crypto system...and much more.
Views: 224 TheArtofService