Sigmoid Social

Gary AckermanHashing is an Integrity control that helps ensure data has not been tampered with. It provides a unique digital fingerprint for verification. <a href="https://qoto.org/tags/Hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#Hashing</a>

Jan :rust: :ferris:Collection of universal hashing functions in Rust:<a href="https://github.com/RustCrypto/universal-hashes" rel="nofollow noopener" translate="no" target="_blank">https://github.com/RustCrypto/universal-hashes</a><a href="https://floss.social/tags/Hash" class="mention hashtag" rel="nofollow noopener" target="_blank">#Hash</a> <a href="https://floss.social/tags/Hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#Hashing</a> <a href="https://floss.social/tags/Cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#Cryptography</a> <a href="https://floss.social/tags/Rust" class="mention hashtag" rel="nofollow noopener" target="_blank">#Rust</a> <a href="https://floss.social/tags/RustLang" class="mention hashtag" rel="nofollow noopener" target="_blank">#RustLang</a>

IT NewsHash Functions with the Golden Ratio - In the realm of computer science, it’s hard to go too far without encountering has... - <a href="https://hackaday.com/2025/04/25/hash-functions-with-the-golden-ratio/" rel="nofollow noopener" translate="no" target="_blank">https://hackaday.com/2025/04/25/hash-functions-with-the-golden-ratio/</a> <a href="https://schleuss.online/tags/computerscience" class="mention hashtag" rel="nofollow noopener" target="_blank">#computerscience</a> <a href="https://schleuss.online/tags/processingtime" class="mention hashtag" rel="nofollow noopener" target="_blank">#processingtime</a> <a href="https://schleuss.online/tags/efficiency" class="mention hashtag" rel="nofollow noopener" target="_blank">#efficiency</a> <a href="https://schleuss.online/tags/fibbonaci" class="mention hashtag" rel="nofollow noopener" target="_blank">#fibbonaci</a> <a href="https://schleuss.online/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#science</a> <a href="https://schleuss.online/tags/hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a> <a href="https://schleuss.online/tags/modulo" class="mention hashtag" rel="nofollow noopener" target="_blank">#modulo</a> <a href="https://schleuss.online/tags/hash" class="mention hashtag" rel="nofollow noopener" target="_blank">#hash</a>

Tao of MacApple Photos phones home, but doesn't actually tell Apple anything about youThere’s witch hunts, and there’s discussions about online privacy.(...)<a href="https://mastodon.social/tags/apple" class="mention hashtag" rel="nofollow noopener" target="_blank">#apple</a> <a href="https://mastodon.social/tags/hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a> <a href="https://mastodon.social/tags/image" class="mention hashtag" rel="nofollow noopener" target="_blank">#image</a> <a href="https://mastodon.social/tags/matching" class="mention hashtag" rel="nofollow noopener" target="_blank">#matching</a> <a href="https://mastodon.social/tags/photos" class="mention hashtag" rel="nofollow noopener" target="_blank">#photos</a> <a href="https://mastodon.social/tags/pointsofinterest" class="mention hashtag" rel="nofollow noopener" target="_blank">#pointsofinterest</a> <a href="https://mastodon.social/tags/privacy" class="mention hashtag" rel="nofollow noopener" target="_blank">#privacy</a><a href="https://taoofmac.com/space/links/2025/01/01/2330" rel="nofollow noopener" translate="no" target="_blank">https://taoofmac.com/space/links/2025/01/01/2330</a>

David Senate⚡️Turning my home into a mini crypto playground with Litecoin and Doge miners! Who else is mining for fun? ⛏️ <a href="https://infosec.exchange/tags/crypto" class="mention hashtag" rel="nofollow noopener" target="_blank">#crypto</a> <a href="https://infosec.exchange/tags/Litecoin" class="mention hashtag" rel="nofollow noopener" target="_blank">#Litecoin</a> <a href="https://infosec.exchange/tags/doge" class="mention hashtag" rel="nofollow noopener" target="_blank">#doge</a> <a href="https://infosec.exchange/tags/hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a> <a href="https://infosec.exchange/tags/funny" class="mention hashtag" rel="nofollow noopener" target="_blank">#funny</a>

Genomicalist 🧬🦠🧫👩‍💻Saying that blockchains are inherently bad is like saying that knifes are inherently bad. Yes, they can be used for bad things. But also good things: Just consider Torvald's Git software version control implementation.<a href="https://genomic.social/tags/blockchain" class="mention hashtag" rel="nofollow noopener" target="_blank">#blockchain</a> <a href="https://genomic.social/tags/hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a> <a href="https://genomic.social/tags/git" class="mention hashtag" rel="nofollow noopener" target="_blank">#git</a>

Jan :rust: :ferris:<a href="https://toot.liw.fi/@liw" class="u-url mention" rel="nofollow noopener" target="_blank">@liw</a> Have a look at the "RustCrypto: <a href="https://floss.social/tags/Password" class="mention hashtag" rel="nofollow noopener" target="_blank">#Password</a> Hashes" project:<a href="https://github.com/RustCrypto/password-hashes" rel="nofollow noopener" translate="no" target="_blank">https://github.com/RustCrypto/password-hashes</a>They provide all kinds of password-hashing algorithms, like: - Argon2 - PBKDF2 and many more<a href="https://floss.social/tags/Hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#Hashing</a> <a href="https://floss.social/tags/Rust" class="mention hashtag" rel="nofollow noopener" target="_blank">#Rust</a> <a href="https://floss.social/tags/RustLang" class="mention hashtag" rel="nofollow noopener" target="_blank">#RustLang</a> <a href="https://floss.social/tags/Encryption" class="mention hashtag" rel="nofollow noopener" target="_blank">#Encryption</a>

zirias (on snac)Just started work on the planned "single instance mode" for <a href="https://snac.bsd.cafe?t=xmoji" class="mention hashtag" rel="nofollow noopener" target="_blank">#Xmoji</a>. The first commit is done, adding a class implementing the core functionality using a local <a href="https://snac.bsd.cafe?t=unix" class="mention hashtag" rel="nofollow noopener" target="_blank">#Unix</a> <a href="https://snac.bsd.cafe?t=socket" class="mention hashtag" rel="nofollow noopener" target="_blank">#socket</a>. Part of the job is deriving a unique name for that socket, where <a href="https://snac.bsd.cafe?t=hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a> comes natural. I had a similar class in <a href="https://snac.bsd.cafe?t=qxmoji" class="mention hashtag" rel="nofollow noopener" target="_blank">#qXmoji</a> (based on <a href="https://snac.bsd.cafe?t=qt" class="mention hashtag" rel="nofollow noopener" target="_blank">#Qt</a>), and there you have <a href="https://snac.bsd.cafe?t=sha256" class="mention hashtag" rel="nofollow noopener" target="_blank">#sha256</a> at your fingertips with <code>QCryptographicHash</code>, so I just used that. You need a string from that, and sure thing, there's a <code>.toBase64()</code> method. Well, a <code>/</code> doesn't play well for filenames, but then, there's <code>.replace()</code>. Without all these helpers from Qt, first thing I did now was searching the web for a "good" hash function, but there's certainly no need for a cryptographic one. I found <a href="https://snac.bsd.cafe?t=fnv1a" class="mention hashtag" rel="nofollow noopener" target="_blank">#FNV1a</a>. It's super easy to implement in <a href="https://snac.bsd.cafe?t=c" class="mention hashtag" rel="nofollow noopener" target="_blank">#C</a>. And for the base64 part, well, doing it myself, I can directly use a modified set of digits, without the <code>/</code>. Now, here's the whole thing: <a href="https://github.com/Zirias/xmoji/commit/db764e3184537d42b528e718bd4886495eb45544" rel="nofollow noopener" target="_blank">https://github.com/Zirias/xmoji/commit/db764e3184537d42b528e718bd4886495eb45544</a> I'd say that's a nice example how not having lots of "powerful" library functions readily available can lead to a much better (smaller, more efficient) solution. 😏 <a href="https://snac.bsd.cafe?t=x11" class="mention hashtag" rel="nofollow noopener" target="_blank">#X11</a> <a href="https://snac.bsd.cafe?t=emoji" class="mention hashtag" rel="nofollow noopener" target="_blank">#emoji</a> <a href="https://snac.bsd.cafe?t=keyboard" class="mention hashtag" rel="nofollow noopener" target="_blank">#keyboard</a> <a href="https://snac.bsd.cafe?t=development" class="mention hashtag" rel="nofollow noopener" target="_blank">#development</a>

Royce WilliamsSo ... due to an early obsession with historical BSD hashes ... I have significantly more bcrypt hashrate-per-watt cracking capacity than most solo shops. For bcrypt cost 12, it's about 34Kh/s straight wordlist -- the equivalent of about 17 4090s -- at only 1100W (these old Bitcoin FPGAs are very efficient for bcrypt specifically). And this capacity is intermittently idle, which is kinda a shame.I haven't really put it out there as something I can help with if needed (outside of the Hashcat team). So ... feel free to ping me if you need bcrypts cracked/audited!(Reasonable rates, but note that I do have a pretty firmly high bar for provenance / proof of authorization)(Rat's nest of USB has been cleaned up a bit 😅)<a href="https://infosec.exchange/tags/bcrypt" class="mention hashtag" rel="nofollow noopener" target="_blank">#bcrypt</a> <a href="https://infosec.exchange/tags/PasswordCracking" class="mention hashtag" rel="nofollow noopener" target="_blank">#PasswordCracking</a> <a href="https://infosec.exchange/tags/hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a>

IT NewsMeta pays the price for storing hundreds of millions of passwords in plaintext - Enlarge (credit: Getty Images) Officials in Ireland have fined... - <a href="https://arstechnica.com/?p=2053118" rel="nofollow noopener" translate="no" target="_blank">https://arstechnica.com/?p=2053118</a> <a href="https://schleuss.online/tags/authentication" class="mention hashtag" rel="nofollow noopener" target="_blank">#authentication</a> <a href="https://schleuss.online/tags/cryptography" class="mention hashtag" rel="nofollow noopener" target="_blank">#cryptography</a> <a href="https://schleuss.online/tags/passwords" class="mention hashtag" rel="nofollow noopener" target="_blank">#passwords</a> <a href="https://schleuss.online/tags/security" class="mention hashtag" rel="nofollow noopener" target="_blank">#security</a> <a href="https://schleuss.online/tags/hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a> <a href="https://schleuss.online/tags/privacy" class="mention hashtag" rel="nofollow noopener" target="_blank">#privacy</a> <a href="https://schleuss.online/tags/biz" class="mention hashtag" rel="nofollow noopener" target="_blank">#biz</a>&it

Wervice 🦀Can somebody help me with this? 😂 While trying to do memory-hard hashing in <a href="https://fosstodon.org/tags/Bash" class="mention hashtag" rel="nofollow noopener" target="_blank">#Bash</a> without using external tools aside from <a href="https://fosstodon.org/tags/OpenSSL" class="mention hashtag" rel="nofollow noopener" target="_blank">#OpenSSL</a> I came up with this thing: <a href="https://pastebin.com/D3vqgW7N" rel="nofollow noopener" translate="no" target="_blank">https://pastebin.com/D3vqgW7N</a> It seems to hash the password, but when using a fixed salt, the hash does not change, even with a different password. Thus, I am not sure if this is trustworthy.I'd be very glad if somebody could help me here 🙂 <a href="https://fosstodon.org/tags/hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a> <a href="https://fosstodon.org/tags/cybersecurity" class="mention hashtag" rel="nofollow noopener" target="_blank">#cybersecurity</a>

JMLR'Random measure priors in Bayesian recovery from sketches', by Mario Beraha, Stefano Favaro, Matteo Sesia.<a href="http://jmlr.org/papers/v25/23-1058.html" target="_blank" rel="nofollow noopener" translate="no">http://jmlr.org/papers/v25/23-1058.html</a> <a href="https://sigmoid.social/tags/hashing" class="mention hashtag" rel="tag">#hashing</a> <a href="https://sigmoid.social/tags/priors" class="mention hashtag" rel="tag">#priors</a> <a href="https://sigmoid.social/tags/prior" class="mention hashtag" rel="tag">#prior</a>

CppConCppCon 2024 SESSION ANNOUNCEMENT: So You Think You Can Hash by <a href="https://hachyderm.io/@ciura_victor" class="u-url mention" rel="nofollow noopener" target="_blank">@ciura_victor</a><a href="https://cppcon2024.sched.com/event/1gZfQ/so-you-think-you-can-hash" rel="nofollow noopener" translate="no" target="_blank">https://cppcon2024.sched.com/event/1gZfQ/so-you-think-you-can-hash</a>Register now: <a href="https://cppcon.org/registration/" rel="nofollow noopener" translate="no" target="_blank">https://cppcon.org/registration/</a><a href="https://mastodon.social/tags/cpp" class="mention hashtag" rel="nofollow noopener" target="_blank">#cpp</a> <a href="https://mastodon.social/tags/cplusplus" class="mention hashtag" rel="nofollow noopener" target="_blank">#cplusplus</a> <a href="https://mastodon.social/tags/coding" class="mention hashtag" rel="nofollow noopener" target="_blank">#coding</a> <a href="https://mastodon.social/tags/hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a>

Royce WilliamsWhen a target hashlist has a significantly lower percentage of cracks than expected, I've started calling the remaining/missing cracks "dark matter".Some potential causes of cracking "dark matter":<ul><li>Site changed methodologies later: switched to a nested hash, added a pepper, HSM, true encryption layer, etc.</li><li>High number of automatically random-ish passwords: defaults, resets, bots, randomized on account lock, etc.</li><li>Complexity requirements higher than expected: high minimum length, etc.</li><li>Attacker (me) is missing key info: language, encoding, demographics, etc.</li></ul>What could other causes be?<a href="https://infosec.exchange/tags/Hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#Hashing</a> <a href="https://infosec.exchange/tags/PasswordCracking" class="mention hashtag" rel="nofollow noopener" target="_blank">#PasswordCracking</a>

Kevin Karhan :verified:<a href="https://lea.pet/@lea" class="u-url mention" rel="nofollow noopener" target="_blank">@lea</a> <a href="https://tilde.zone/@lunch" class="u-url mention" rel="nofollow noopener" target="_blank">@lunch</a> I mean, I could understand if for <a href="https://infosec.space/tags/FAT32" class="mention hashtag" rel="nofollow noopener" target="_blank">#FAT32</a> they'd set it to just below 2GiB per file since <a href="https://en.wikipedia.org/wiki/File_Allocation_Table#Maximal_sizes" rel="nofollow noopener" target="_blank">that's it's maximum</a>.So yes, we <a href="https://transfem.social/notes/9vi30lki36ri013g" rel="nofollow noopener" target="_blank">should refuse to accomondate FAT32</a> or any other legacy filesystem of that matter because even <a href="https://infosec.space/tags/ext2" class="mention hashtag" rel="nofollow noopener" target="_blank">#ext2</a> <a href="https://en.wikipedia.org/wiki/Ext2" rel="nofollow noopener" target="_blank">supports 16GiB file size</a> at the bare minimum...As I'm confident <a href="https://lea.pet/notes/9vi2ywyzd6" rel="nofollow noopener" target="_blank">that 2012 low-end CPU</a> didn't even have hardware-acceleration, and <a href="https://infosec.space/tags/hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a> on <a href="https://infosec.space/tags/BitTorrent" class="mention hashtag" rel="nofollow noopener" target="_blank">#BitTorrent</a> is solely done to prevent bitflips and enshure it's complete as malicious attacks like <a href="https://infosec.space/tags/HashCollisions" class="mention hashtag" rel="nofollow noopener" target="_blank">#HashCollisions</a> on a torrent are rare and would likely fail due to exceeding the file size as per metadata...

Philip Zucker[New Blog Post] Hashing Modulo Theories <a href="https://philipzucker.com/hashing-modulo/" rel="nofollow noopener" translate="no" target="_blank">https://philipzucker.com/hashing-modulo/</a> <a href="https://types.pl/tags/datastructures" class="mention hashtag" rel="nofollow noopener" target="_blank">#datastructures</a> <a href="https://types.pl/tags/hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a>

Royce WilliamsSo <a href="https://bird.makeup/users/solardiz" class="u-url mention" rel="nofollow noopener" target="_blank">@solardiz</a> presented a talk on "Password cracking: past, present, future" at OffensiveCon last week. Definitely worth a read - bringing his usual disciplined thinking to a topic he knows very well.He includes both historical and taxonomical perspectives, both of which I appreciate. Apparently, one of the first <del>password-cracking</del> contests was in 1982? (This was a password cracker contest - seeking the best cracking software!)<a href="https://www.openwall.com/presentations/OffensiveCon2024-Password-Cracking/" rel="nofollow noopener" translate="no" target="_blank">https://www.openwall.com/presentations/OffensiveCon2024-Password-Cracking/</a>[Will update post if video of the talk itself appears.]<a href="https://infosec.exchange/tags/passwords" class="mention hashtag" rel="nofollow noopener" target="_blank">#passwords</a> <a href="https://infosec.exchange/tags/hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#hashing</a> <a href="https://infosec.exchange/tags/PasswordCracking" class="mention hashtag" rel="nofollow noopener" target="_blank">#PasswordCracking</a>

Jeroen Ruigrok van der WervenAre your passwords in the green?<a href="https://www.hivesystems.com/blog/are-your-passwords-in-the-green" rel="nofollow noopener" translate="no" target="_blank">https://www.hivesystems.com/blog/are-your-passwords-in-the-green</a>Really stop using MD5 already for passwords.<a href="https://mastodon.social/tags/Security" class="mention hashtag" rel="nofollow noopener" target="_blank">#Security</a> <a href="https://mastodon.social/tags/Passwords" class="mention hashtag" rel="nofollow noopener" target="_blank">#Passwords</a> <a href="https://mastodon.social/tags/Hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#Hashing</a> <a href="https://mastodon.social/tags/MD5" class="mention hashtag" rel="nofollow noopener" target="_blank">#MD5</a> <a href="https://mastodon.social/tags/Bcrypt" class="mention hashtag" rel="nofollow noopener" target="_blank">#Bcrypt</a>

HGPU groupParallel Implementation of Lightweight Secure Hash Algorithm on CPU and GPU Environments<a href="https://mast.hpc.social/tags/CUDA" class="mention hashtag" rel="nofollow noopener" target="_blank">#CUDA</a> <a href="https://mast.hpc.social/tags/PTX" class="mention hashtag" rel="nofollow noopener" target="_blank">#PTX</a> <a href="https://mast.hpc.social/tags/Security" class="mention hashtag" rel="nofollow noopener" target="_blank">#Security</a> <a href="https://mast.hpc.social/tags/Hashing" class="mention hashtag" rel="nofollow noopener" target="_blank">#Hashing</a> <a href="https://mast.hpc.social/tags/Package" class="mention hashtag" rel="nofollow noopener" target="_blank">#Package</a><a href="https://hgpu.org/?p=29146" rel="nofollow noopener" translate="no" target="_blank">https://hgpu.org/?p=29146</a>

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