Bitcoin vs Quantum Computers: Hora de pasar a Post-Quantum Cryptography

Blog personal de Chema Alonso ( https://MyPublicInbox.com/ChemaAlonso ): Ciberseguridad, IA, Innovación, Tecnología, Cómics & Cosas Personasles.

Constructing The Word's First JPEG XL MD5 Hash Quine

A walk through of building an image that displays its own MD5 Hash

Ever thought hashes could paint colors or shape avatars?
In this new Quarkus tutorial, I explore creative uses of Apache Commons Codec — from deterministic color generation to distributed fingerprints.

🔗 https://www.the-main-thread.com/p/creative-digest-applications-quarkus-apache-commons-codec

#Java #Quarkus #ApacheCommons #Hashing #Coding

Can there be a #password #hashing algorithm that considers the distance between each character key on a keyboard (of some specific layout, say QWERTY)? The difficulty of hitting the correct character on a small 26-key on-screen keyboard on my phone is making me think whether we should have a relaxed algorithm that gives some fault tolerance... (Surely it'll not be as secure, but it could allow longer passwords on phones.)
When Your Hash Becomes a String: Hunting Ruby's Million-to-One Memory Bug

An "impossible" Ruby bug: Hashes becoming Strings at runtime. 2,700 identical crashes. No corruption. Just objects changing what they are. Deep dive.

Closer to Code
Steinar H. Gunderson

Love 😍 such articles that cover a topic in depth:

“Modern Perfect Hashing For Strings” [2023], Wojciech Muła (http://0x80.pl/notesen/2023-04-30-lookup-in-strings.html).

On HN: https://news.ycombinator.com/item?id=35764176

#Hashing #PerfectHashing #Lexing #LexicalAnalysis #Programming #Algorithms #Trie #gperf #Tokenization

Modern perfect hashing for strings

Pretty surprised to see that the armv6m optimized Ascon-Hash256 (winner of NISTs lightweight crypto competition) is 3x slower than the standard BLAKE2s reference implementation on a Cortex-M0+ 😲

#hashing #ascon

[New Blog Post] A Slotted Hash Cons for Alpha Invariance https://www.philipzucker.com/slotted_hash_cons/ #hashing #egraph #lambda
A Slotted Hash Cons for Alpha Invariance

Slotted e-graphs https://dl.acm.org/doi/10.1145/3729326 are a data structure that compactly stores many equivalent terms in an alpha invariant aware way. I’ve been very excited by them but also very confused by them.

Hey There Buddo!
計算不重複元素問題的效率

前陣子在 Lobsters 上看到的文章:「Hashed sorting is typically faster than hash tables」,作者之前在 Google 改善演算法效率。 問題是計算 array 內不重複元素的數量,這邊的元素是 uint64,大多都是不重複的: Problem statement: count the unique value...

Gea-Suan Lin's BLOG