toad.social

Peter N. M. HansteenRecent new features in OpenSSH <a href="https://www.undeadly.org/cgi?action=article;sid=20250802084523" rel="nofollow noopener" translate="no" target="_blank">https://www.undeadly.org/cgi?action=article;sid=20250802084523</a> <a href="https://mastodon.social/tags/openbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#openbsd</a> <a href="https://mastodon.social/tags/openssh" class="mention hashtag" rel="nofollow noopener" target="_blank">#openssh</a> <a href="https://mastodon.social/tags/ssh" class="mention hashtag" rel="nofollow noopener" target="_blank">#ssh</a> <a href="https://mastodon.social/tags/newfeatures" class="mention hashtag" rel="nofollow noopener" target="_blank">#newfeatures</a> <a href="https://mastodon.social/tags/development" class="mention hashtag" rel="nofollow noopener" target="_blank">#development</a> <a href="https://mastodon.social/tags/security" class="mention hashtag" rel="nofollow noopener" target="_blank">#security</a> <a href="https://mastodon.social/tags/freesoftware" class="mention hashtag" rel="nofollow noopener" target="_blank">#freesoftware</a> <a href="https://mastodon.social/tags/libresoftware" class="mention hashtag" rel="nofollow noopener" target="_blank">#libresoftware</a> <a href="https://mastodon.social/tags/crypto" class="mention hashtag" rel="nofollow noopener" target="_blank">#crypto</a> <a href="https://mastodon.social/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a>

Aaron Toponce ⚛️:debian:After typing up my <a href="https://fosstodon.org/tags/JavaScript" class="mention hashtag" rel="nofollow noopener" target="_blank">#JavaScript</a> TRNG* with von Neumann's randomness extractor, I revisited my curiosity to see if I can improve its efficiency. von Neumann throws out a lot of bits, likely including quality entropy.My intuition was to pool the discarded bits and iterate over those again, perhaps with XOR. Turns out my intuition wasn't far off.<a href="https://gist.github.com/atoponce/0a659da0ab53b093629c4facb32e9547" rel="nofollow noopener" translate="no" target="_blank">https://gist.github.com/atoponce/0a659da0ab53b093629c4facb32e9547</a>* Software CAN produce information theoretic entropy. Stating otherwise is a bad meme that needs to die.<a href="https://fosstodon.org/tags/Cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cryptography</a> <a href="https://fosstodon.org/tags/crypto" class="mention hashtag" rel="nofollow noopener" target="_blank">#crypto</a>

Tommaso GagliardoniThe war on crypto never ends. The war on privacy, civil rights, security and freedom of speech never ends.This time we are dangerously close to lose. The "Child Sexual Abuse" (CSA) EU regulation proposal, more aptly nicknamed "ChatControl", will be voted AGAIN this October, and many countries who opposed it last year are now undecided. The proposal at its roots aims at allowing authorities to break end-to-end encryption for the usual reason: "because of the children". As a father of two, I am disgusted by this recurring, cheap rhetoric.What you can do: <a href="https://www.patrick-breyer.de/en/posts/chat-control/#WhatYouCanDo" rel="nofollow noopener" translate="no" target="_blank">https://www.patrick-breyer.de/en/posts/chat-control/#WhatYouCanDo</a><a href="https://infosec.exchange/tags/eu" class="mention hashtag" rel="nofollow noopener" target="_blank">#eu</a> <a href="https://infosec.exchange/tags/CSA" class="mention hashtag" rel="nofollow noopener" target="_blank">#CSA</a> <a href="https://infosec.exchange/tags/CSAM" class="mention hashtag" rel="nofollow noopener" target="_blank">#CSAM</a> <a href="https://infosec.exchange/tags/ChatControl" class="mention hashtag" rel="nofollow noopener" target="_blank">#ChatControl</a> <a href="https://infosec.exchange/tags/privacy" class="mention hashtag" rel="nofollow noopener" target="_blank">#privacy</a> <a href="https://infosec.exchange/tags/security" class="mention hashtag" rel="nofollow noopener" target="_blank">#security</a> <a href="https://infosec.exchange/tags/surveillance" class="mention hashtag" rel="nofollow noopener" target="_blank">#surveillance</a> <a href="https://infosec.exchange/tags/authoritarianism" class="mention hashtag" rel="nofollow noopener" target="_blank">#authoritarianism</a> <a href="https://infosec.exchange/tags/crypto" class="mention hashtag" rel="nofollow noopener" target="_blank">#crypto</a> <a href="https://infosec.exchange/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a> <a href="https://infosec.exchange/tags/civilrights" class="mention hashtag" rel="nofollow noopener" target="_blank">#civilrights</a>

varx/techIf anyone is up for doing a <a href="https://infosec.exchange/tags/security" class="mention hashtag" rel="nofollow noopener" target="_blank">#security</a> review of Breakmancer's protocol (<a href="https://infosec.exchange/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a>, networking, handshake logic) I'd be *very* appreciative!These are the most recent protocol docs: <a href="https://docs.rs/breakmancer/0.9.0/breakmancer/protocol/index.html" rel="nofollow noopener" translate="no" target="_blank">https://docs.rs/breakmancer/0.9.0/breakmancer/protocol/index.html</a>It's nothing super complicated, just an exchange of X-Wing keys and a KDF, with out-of-band key verification—but *anything* can be gotten wrong. :-)<a href="https://infosec.exchange/tags/CodeReview" class="mention hashtag" rel="nofollow noopener" target="_blank">#CodeReview</a> <a href="https://infosec.exchange/tags/AppSec" class="mention hashtag" rel="nofollow noopener" target="_blank">#AppSec</a> <a href="https://infosec.exchange/tags/RustLang" class="mention hashtag" rel="nofollow noopener" target="_blank">#RustLang</a>

Doktor Overcomma :vepi:<a href="https://kolektiva.social/@reverendstanley" class="u-url mention" rel="nofollow noopener" target="_blank">@reverendstanley</a> While work had been progressing "behind the fence" at Fort Meade, the 1984 album "Points on a Curve" on which this first appeared is one of the earliest publications on elliptic-curve cryptography <a href="https://dobbs.town/tags/ECC" class="mention hashtag" rel="nofollow noopener" target="_blank">#ECC</a> <a href="https://dobbs.town/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a>

ltningWhy on earth was the <a class="hashtag" href="https://pleroma.anduin.net/tag/activitypub" rel="nofollow noopener" target="_blank">#ActivityPub</a> protocol even let out the door without a well-specified and mandatory graceful, non-destructive key rotation scheme?Yes I know the privacy issues. Those are not valid reasons to not have such a mechanism; it's a valid reason to not enable or use one.What we're stuck with now is a ton of instances with absurdly long, legacy-algorithm keys (RSA-4096) with no way to replace them with shorter/better keys without effectively losing everything ever posted on the instance.The protocol is only 7 years old! EC crypto was well-established at the time, and should have been the default.And what happens once everyone has to replace the keys, because RSA is broken by quantum computers (I know, probably 100 years to go)? The <a class="hashtag" href="https://pleroma.anduin.net/tag/fediverse" rel="nofollow noopener" target="_blank">#Fediverse</a> will be a wasteland, with no instances trusting anything from any other instance, so all <a class="hashtag" href="https://pleroma.anduin.net/tag/federation" rel="nofollow noopener" target="_blank">#Federation</a> breaks down.Sorry if I got some details wrong about what the protocol says. If I get flamed to death for being wrong, then I'll consider that a Good Thing(TM). I've been trying to find a way to rotate/replace keys for a while and all my searching turns up is either 1) confirmation that most people don't know or care about cryptography, or 2) <a href="https://socialhub.activitypub.rocks/t/key-rotation-notification/562" rel="nofollow noopener" target="_blank">https://socialhub.activitypub.rocks/t/key-rotation-notification/562</a> - which really isn't helpful.If it is possible to gracefully rotate the key(s) of an instance/user, there really has to exist some documentation that explains clearly how to implement this in a server and how to exercise it as a server operator.<a class="hashtag" href="https://pleroma.anduin.net/tag/cryptography" rel="nofollow noopener" target="_blank">#Cryptography</a> <a class="hashtag" href="https://pleroma.anduin.net/tag/rant" rel="nofollow noopener" target="_blank">#Rant</a> <a class="hashtag" href="https://pleroma.anduin.net/tag/mastodon" rel="nofollow noopener" target="_blank">#Mastodon</a>

House Panther :verified_paw:A little <a href="https://goblackcat.social/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a> <a href="https://goblackcat.social/tags/humor" class="mention hashtag" rel="nofollow noopener" target="_blank">#humor</a> this morning for all of us. 😹

Aaron Toponce ⚛️:debian:I'm reading the paper by Bruce Schneier and Niels Ferguson on the Fortuna CSPRNG from 2003.You can read it here: <a href="https://www.schneier.com/wp-content/uploads/2015/12/fortuna.pdf" rel="nofollow noopener" translate="no" target="_blank">https://www.schneier.com/wp-content/uploads/2015/12/fortuna.pdf</a>Note the highlighted section. This describes precisely fast key erasure that Daniel J. Bernstein describes in his 2017 blog post: <a href="https://blog.cr.yp.to/20170723-random.html" rel="nofollow noopener" translate="no" target="_blank">https://blog.cr.yp.to/20170723-random.html</a><a href="https://fosstodon.org/tags/crypto" class="mention hashtag" rel="nofollow noopener" target="_blank">#crypto</a> <a href="https://fosstodon.org/tags/Cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cryptography</a>

The New Oil<a href="https://mastodon.thenewoil.org/tags/Cryptomator" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cryptomator</a>: Our Roadmap to Post-Quantum <a href="https://mastodon.thenewoil.org/tags/Cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cryptography</a><a href="https://cryptomator.org/blog/2025/07/24/post-quantum-roadmap/" rel="nofollow noopener" translate="no" target="_blank">https://cryptomator.org/blog/2025/07/24/post-quantum-roadmap/</a><a href="https://mastodon.thenewoil.org/tags/FOSS" class="mention hashtag" rel="nofollow noopener" target="_blank">#FOSS</a> <a href="https://mastodon.thenewoil.org/tags/cybersecurity" class="mention hashtag" rel="nofollow noopener" target="_blank">#cybersecurity</a> <a href="https://mastodon.thenewoil.org/tags/PQC" class="mention hashtag" rel="nofollow noopener" target="_blank">#PQC</a>

TechnoTenshi :verified_trans: :Fire_Lesbian:A new proof shows quantum cryptography can be built on problems even harder than NP, offering security beyond classical encryption. Researchers introduced "one-way puzzles" to replace traditional cryptographic foundations.<a href="https://www.quantamagazine.org/quantum-scientists-have-built-a-new-math-of-cryptography-20250725/" rel="nofollow noopener" translate="no" target="_blank">https://www.quantamagazine.org/quantum-scientists-have-built-a-new-math-of-cryptography-20250725/</a><a href="https://infosec.exchange/tags/QuantumComputing" class="mention hashtag" rel="nofollow noopener" target="_blank">#QuantumComputing</a> <a href="https://infosec.exchange/tags/Cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cryptography</a> <a href="https://infosec.exchange/tags/Infosec" class="mention hashtag" rel="nofollow noopener" target="_blank">#Infosec</a> <a href="https://infosec.exchange/tags/PostQuantum" class="mention hashtag" rel="nofollow noopener" target="_blank">#PostQuantum</a>

Victoria Stuart 🇨🇦 🏳️‍⚧️These are clever people: Quantum Scientists Building New Math of Cryptography <a href="https://www.quantamagazine.org/quantum-scientists-have-built-a-new-math-of-cryptography-20250725/" rel="nofollow noopener" translate="no" target="_blank">https://www.quantamagazine.org/quantum-scientists-have-built-a-new-math-of-cryptography-20250725/</a> One-way function <a href="https://en.wikipedia.org/wiki/One-way_function" rel="nofollow noopener" translate="no" target="_blank">https://en.wikipedia.org/wiki/One-way_function</a> Quantum cryptography <a href="https://en.wikipedia.org/wiki/Quantum_cryptography" rel="nofollow noopener" translate="no" target="_blank">https://en.wikipedia.org/wiki/Quantum_cryptography</a> Permanent (mathematics) <a href="https://en.wikipedia.org/wiki/Permanent_(mathematics)" rel="nofollow noopener" translate="no" target="_blank">https://en.wikipedia.org/wiki/Permanent_(mathematics)</a> ♯P-completeness of 01-permanent <a href="https://en.wikipedia.org/wiki/%E2%99%AFP-completeness_of_01-permanent" rel="nofollow noopener" translate="no" target="_blank">https://en.wikipedia.org/wiki/%E2%99%AFP-completeness_of_01-permanent</a><a href="https://mastodon.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener" target="_blank">#mathematics</a> <a href="https://mastodon.social/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a> <a href="https://mastodon.social/tags/OneWayFunctions" class="mention hashtag" rel="nofollow noopener" target="_blank">#OneWayFunctions</a> <a href="https://mastodon.social/tags/LinearAlgebra" class="mention hashtag" rel="nofollow noopener" target="_blank">#LinearAlgebra</a> <a href="https://mastodon.social/tags/matrices" class="mention hashtag" rel="nofollow noopener" target="_blank">#matrices</a> <a href="https://mastodon.social/tags/QuantumCryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#QuantumCryptography</a> <a href="https://mastodon.social/tags/NPhard" class="mention hashtag" rel="nofollow noopener" target="_blank">#NPhard</a>

Bob the TravelerAgnes Meyer Driscoll, born OTD in 1889, was one of the leading US cryptanalysts during both World War I and World War II; see where she worked in <a href="https://mastodon.world/tags/NewYorkCity" class="mention hashtag" rel="nofollow noopener" target="_blank">#NewYorkCity</a> <a href="https://cromwell-intl.com/travel/usa/new-york-black-chamber/?s=mb" rel="nofollow noopener" translate="no" target="_blank">https://cromwell-intl.com/travel/usa/new-york-black-chamber/?s=mb</a> <a href="https://mastodon.world/tags/travel" class="mention hashtag" rel="nofollow noopener" target="_blank">#travel</a> <a href="https://mastodon.world/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a>

CosicBeCurious about the latest in <a href="https://mastodon.social/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a> and <a href="https://mastodon.social/tags/security" class="mention hashtag" rel="nofollow noopener" target="_blank">#security</a> research? The new COSIC newsletter gives you a two-month snapshot of our key achievements and updates. Read it here: <a href="https://www.esat.kuleuven.be/cosic/sites/newsletter/2025/07/24/cosic-newsletter-june-july/" rel="nofollow noopener" translate="no" target="_blank">https://www.esat.kuleuven.be/cosic/sites/newsletter/2025/07/24/cosic-newsletter-june-july/</a>

Aaron Toponce ⚛️:debian:I finally finished by browser-based randomness nonsense. Let me know what you think.<a href="https://atoponce.github.io" rel="nofollow noopener" translate="no" target="_blank">https://atoponce.github.io</a><a href="https://fosstodon.org/tags/crypto" class="mention hashtag" rel="nofollow noopener" target="_blank">#crypto</a> <a href="https://fosstodon.org/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a> <a href="https://fosstodon.org/tags/passwords" class="mention hashtag" rel="nofollow noopener" target="_blank">#passwords</a>

UK<a href="https://www.europesays.com/uk/284955/" rel="nofollow noopener" translate="no" target="_blank">https://www.europesays.com/uk/284955/</a> Understanding Quantum-Resistant Cryptography Roadmaps | Chapters <a href="https://pubeurope.com/tags/Computing" class="mention hashtag" rel="nofollow noopener" target="_blank">#Computing</a> <a href="https://pubeurope.com/tags/Cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cryptography</a> <a href="https://pubeurope.com/tags/quantumresistant" class="mention hashtag" rel="nofollow noopener" target="_blank">#quantumresistant</a> <a href="https://pubeurope.com/tags/Roadmaps" class="mention hashtag" rel="nofollow noopener" target="_blank">#Roadmaps</a> <a href="https://pubeurope.com/tags/Technology" class="mention hashtag" rel="nofollow noopener" target="_blank">#Technology</a> <a href="https://pubeurope.com/tags/UK" class="mention hashtag" rel="nofollow noopener" target="_blank">#UK</a> <a href="https://pubeurope.com/tags/understanding" class="mention hashtag" rel="nofollow noopener" target="_blank">#understanding</a> <a href="https://pubeurope.com/tags/UnitedKingdom" class="mention hashtag" rel="nofollow noopener" target="_blank">#UnitedKingdom</a>

🧿🪬🍄🌈🎮💻🚲🥓🎃💀🏴🛻🇺🇸I think that the <a href="https://mastodon.social/tags/openweb" class="mention hashtag" rel="nofollow noopener" target="_blank">#openweb</a> and <a href="https://mastodon.social/tags/privacy" class="mention hashtag" rel="nofollow noopener" target="_blank">#privacy</a> are orthogonal. If <a href="https://mastodon.social/tags/InformationWantsToBeFree" class="mention hashtag" rel="nofollow noopener" target="_blank">#InformationWantsToBeFree</a> then why are you using <a href="https://mastodon.social/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a>? They are both good things, but you can't be doing them both at the same time.<a href="https://mastodon.social/tags/cypherpunk" class="mention hashtag" rel="nofollow noopener" target="_blank">#cypherpunk</a> <a href="https://mastodon.social/tags/indieweb" class="mention hashtag" rel="nofollow noopener" target="_blank">#indieweb</a> <a href="https://mastodon.social/tags/opensource" class="mention hashtag" rel="nofollow noopener" target="_blank">#opensource</a>

Tony “Abolish ICE” Arcieri🌹🦀Replication of Quantum Factorisation Records with an 8-bit Home Computer, an Abacus, and a Dog: a snarky take on how unimpressive these records actually are<a href="https://eprint.iacr.org/2025/1237.pdf" rel="nofollow noopener" translate="no" target="_blank">https://eprint.iacr.org/2025/1237.pdf</a><a href="https://mas.to/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a>

Ben EvansFactoring primes using an abacus and a dog - <a href="https://eprint.iacr.org/2025/1237.pdf" rel="nofollow noopener" translate="no" target="_blank">https://eprint.iacr.org/2025/1237.pdf</a> <a href="https://mastodon.social/tags/quantum" class="mention hashtag" rel="nofollow noopener" target="_blank">#quantum</a> <a href="https://mastodon.social/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a>

Bob the TravelerJoseph Rochefort, who died OTD in 1976, was a major figure in the US Navy's cryptographic and intelligence operations from 1925 to 1946, particularly in the Battle of Midway <a href="https://cromwell-intl.com/travel/japan/wwii-cryptanalysis/?s=mb" rel="nofollow noopener" translate="no" target="_blank">https://cromwell-intl.com/travel/japan/wwii-cryptanalysis/?s=mb</a> <a href="https://mastodon.world/tags/cybersecurity" class="mention hashtag" rel="nofollow noopener" target="_blank">#cybersecurity</a> <a href="https://mastodon.world/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a> <a href="https://mastodon.world/tags/history" class="mention hashtag" rel="nofollow noopener" target="_blank">#history</a>

Bob the TravelerJoseph Rochefort, who died OTD in 1976, was a major figure in the US Navy's cryptographic and intelligence operations from 1925 to 1946, particularly in the Battle of Midway <a href="https://cromwell-intl.com/cybersecurity/crypto/?s=mb" rel="nofollow noopener" translate="no" target="_blank">https://cromwell-intl.com/cybersecurity/crypto/?s=mb</a> <a href="https://mastodon.world/tags/cybersecurity" class="mention hashtag" rel="nofollow noopener" target="_blank">#cybersecurity</a> <a href="https://mastodon.world/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a> <a href="https://mastodon.world/tags/history" class="mention hashtag" rel="nofollow noopener" target="_blank">#history</a>

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