Last week, Crypto 2017 took house at UC Santa Barbara. There were to a greater extent than than 425 attendees for this year's 4-day conference, amongst 72 papers existence presented.
Monday morning time was interrupted yesteryear a rattling particular java break: the ecliptic plication cryptography java break, a.k.a. viewing the solar eclipse. General Chair Steve Myers had rattling conveniently ordered solar eclipse spectacles for everyone (from a legitimate vendor!). The heaven was cloudy during the java break, but the eclipse occasionally peeked through, as well as the skies cleared later for a clearer sentiment of the eclipse.
Later that morning, John Martinis, a physicist from UCSB, gave an invited lecture on the prospects of a quantum factoring (and, presumably, discrete logarithm-ing) machine.
On Mon afternoon, Yehuda Lindell gave a speak on his newspaper Fast Secure Two-Party ECDSA Signing. Fast protocols be for many factoring-, discrete logarithm-, as well as elliptic curve-based signature as well as populace fundamental encryption schemes. DSA as well as ECDSA are tricky because signing involves operations both additive as well as multiplicative operations using $k$ as well as $k^{-1}$, but inwards a threshold scheme this must hold out done without knowing $k$. Past piece of employment yesteryear MacKenzie as well as Reiter (Crypto 2001) as well as Gennaro, Goldfeder, as well as Narayanan (ACNS 2016) gives two-party protocols for computing ECDSA using multiplicative sharing of the signing fundamental $x$ as well as ephemeral undercover $k$ as well as and then Paillier encryption to combine their equations. Proving honest deportment ends upward existence quite expensive, unfortunately. Lindell showed how to ameliorate performance yesteryear simplifying the shared tasks that 1 of the political party participates inwards piece withal using Paillier homomorphic encryption. The fundamental thought is that the instant party, earlier releasing the signature, tin dismiss depository fiscal establishment jibe whether the kickoff political party behaved honestly precisely yesteryear checking the terminal signature, which is publicly checkable efficient yesteryear Definition of a digital signature scheme. The newspaper reports experimental results that exhibit that two-party signing for ECDSA (with the NIST P-256 curve) tin dismiss hold out run inwards about 37 milliseconds. The techniques also apply to DSA.
Tuesday featured the 3 award papers. Sam Kim as well as David J. Wu won the best educatee newspaper abide by for Watermarking Cryptographic Functionalities from Standard Lattice Assumptions. Best newspaper awards went to Nico Döttling as well as Sanjam Garg for Identity-Based Encryption from the Diffie-Hellman Assumption as well as Marc Stevens, Elie Bursztein, Pierre Karpman, Ange Albertini, as well as Yarik Markov for The kickoff collision for total SHA-1.
Döttling as well as Garg's newspaper showed how to build identity-based encryption from the computational Diffie–Hellman problem inwards whatever group, including elliptic plication groups. Previous results had shown it impossible to build IBE inwards a black-box agency from CDH, hence this newspaper had to brand non-black-box piece of employment of the underlying cryptographic primitives. While the scheme is polynomial-time, this non-black-box piece of employment ends upward making the scheme quite inefficient. On Midweek some other newspaper expanded the gear upward of assumptions from which 1 tin dismiss build identity-based encryption: Identity-based Encryption from Codes amongst Rank Metric.
Tuesday level featured the annual rump session, including the programme chair's report, reminiscences, announcements, songs, joke talks, and, unfortunately, some serious talks too. Most poignant was the instant talk, entitled "Forty years as well as withal running". Jean-Jacques Quisquater presented a listing of cryptosystems withal running after twoscore years, including the DES/Triple-DES algorithm as well as the RSA cryptosystem. In fact, 2017 marks the 40th anniversary of the project design of RSA, as well as Quisquater had arranged a wonderful surprise: Ron Rivest, Adi Shamir, as well as Leonard Adleman were all acquaint for the rump session, as well as they took the phase to commemorate this milestone.
Later inwards the rump session, Michael Naehrig, co-inventor of the Barreto–Naehrig (BN) household unit of measurement of elliptic curves, performed (via Youtube) his master copy vocal The Sound of Quantum.
On Wednesday, Cédric Fournet of Microsoft Research Cambridge gave the instant invited speak on Project Everest, a massive multi-institution multi-year projection to exercise a fully verified efficient implementation of the TLS protocol. One cistron of Everest is a verified implementation of Curve25519 inwards a linguistic communication called HaCL*, which compiles downward to verified C code. This invited lecture was a articulation speak betwixt Crypto 2017 as well as the 30th IEEE Computer Security Foundations Symposium (CSF), also taking house at UCSB finally week.
The total proceedings of Crypto 2017 are available on SpringerLink:
Crypto 2018 volition lead maintain house inwards August 2018 at—where else?—UC Santa Barbara.
— Douglas Stebila
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