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Curve9767: a new prime-order elliptic curve defined over a finite field that is fast on an ARM Cortex-M0+, and has fast inversion, square root (point compression) and cube roots (constant-time hash-to-curve). Source code and a (detailed) whitepaper:https://github.com/pornin/curve9767 …
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This is where I explain that my previous code had two severe bugs in the sampler, highlighting the gap between traditional development ("the developer is super-careful") and what is really needed for correct lattice-based crypto (probably formal verification of some sort).https://twitter.com/IACRePrint/status/1174345556656832513 …
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Thomas Pornin proslijedio/la je Tweet
Thomas Pornin-
@BearSSLnews - has released new, improved implementations of the Falcon post-quantum signature algorithm, further showcasing NCC Group’s expertise in writing & auditing secure cryptographic algorithms. Thomas explains the implementations here http://bit.ly/2PhWXq0 pic.twitter.com/IhOdtY57zs
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Thomas Pornin proslijedio/la je Tweet
[New] New Efficient, Constant-Time Implementations of Falcon (Thomas Pornin) http://ia.cr/2019/893
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I made a thing: https://t1lang.github.io Just presented at
#nsec19 (slides are on the site)#T1langHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Thomas Pornin proslijedio/la je Tweet
Undefined Behavior Is Really Undefined https://buff.ly/2U2rHtm
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Thomas Pornin proslijedio/la je Tweet
Thank you
@davidben__: "out of the nine evaluated implementations, only the last two (BearSSL and BoringSSL) could not be successfully attacked by our new techniques."Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
New document / wall of text, about the design and implementation of big integers in BearSSL: https://www.bearssl.org/bigint.html All the dark secrets of implementation are revealed!
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BearSSL 0.6 is released: https://www.bearssl.org/changelog.html Some new stuff, e.g. RSA keygen (constant-time code!). No TLS 1.3 yet, but there's a dedicated page and roadmap: https://www.bearssl.org/tls13.html (tldr: it's not easy to do in low RAM, but I'll do something)
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Thomas Pornin proslijedio/la je Tweet
What's better than a key extraction bug in a major crypto library? How about a key extraction bug in 11 major crypto libraries? My latest research: https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/ …
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CTTK (Constant-Time Toolkit), a new library of constant-time primitives to help with implementing constant-time code, both for crypto and non-crypto usages. Features constant-time big integers (among other things). Enjoy!https://github.com/pornin/CTTK
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(Sorry for this announcement which is not, actually, related to BearSSL -- at least until Falcon makes it to TLS.)
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Falcon, a post-quantum signature scheme based on NTRU lattices, submitted to the NIST Post-Quantum Crypto project: https://falcon-sign.info/ Secure, fast, with short signatures. (Authors: Fouque, Hoffstein, Kirchner, Lyubashevsky, Prest, Ricosset, Seiler, Whyte, Zhang, and myself.)
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BearSSL 0.5 is out, and it's now beta: https://www.bearssl.org/changelog.html Also introducing BearSSL's evil twin: BoarSSL: https://www.bearssl.org/boarssl.html
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Thomas Pornin proslijedio/la je Tweet
#OpenBSD's crypto framework is switching to a new constant time AES implementation from Thomas Pornin/BearSSL: https://marc.info/?l=openbsd-cvs&m=149358799204793&w=2 …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
My slides for the presentation I just made at BSides Edinburgh: https://www.bearssl.org/BearSSL-BSidesEdinburgh2017.pdf …
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#BearSSL 0.4: https://www.bearssl.org/changelog.html Also speed benchmarks: https://www.bearssl.org/speed.html And a code size calculator: https://www.bearssl.org/sizes.htmlHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
I will also be there. 'tis conference season.https://twitter.com/NorthSec_io/status/827189419031543808 …
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I'll be there -- come to Scotland to bask in my radiance!https://twitter.com/BSidesEdinburgh/status/827131653659172864 …
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BearSSL-0.3. Lotsa new stuff: https://www.bearssl.org/changelog.html Also updated document on constant-time mul: https://www.bearssl.org/ctmul.html
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