> walking through marrakech at night
> some guy comes up and asks if I want hash
> I ask if it's a cryptographic hash
> he doesn't understand
> I show him the NIST definition
> he laughs and says "it's a good hash"
[...]
> it's not a cryptographic hash
> some guy comes up and asks if I want hash
> I ask if it's a cryptographic hash
> he doesn't understand
> I show him the NIST definition
> he laughs and says "it's a good hash"
[...]
> it's not a cryptographic hash
January 9, 2025 at 7:46 PM
> walking through marrakech at night
> some guy comes up and asks if I want hash
> I ask if it's a cryptographic hash
> he doesn't understand
> I show him the NIST definition
> he laughs and says "it's a good hash"
[...]
> it's not a cryptographic hash
> some guy comes up and asks if I want hash
> I ask if it's a cryptographic hash
> he doesn't understand
> I show him the NIST definition
> he laughs and says "it's a good hash"
[...]
> it's not a cryptographic hash
2) SHA-256 - it's the most boring (complimentary) cryptographic hash function around
October 24, 2024 at 1:35 AM
2) SHA-256 - it's the most boring (complimentary) cryptographic hash function around
3) BLAKE3 - a cryptographic hash function that also uses merkle trees to go fast
October 24, 2024 at 1:36 AM
3) BLAKE3 - a cryptographic hash function that also uses merkle trees to go fast
4) MD5 - people wish it was a cryptographic hash function, but these days we know it has negligible collision resistance. it's fun to break.
October 24, 2024 at 1:37 AM
4) MD5 - people wish it was a cryptographic hash function, but these days we know it has negligible collision resistance. it's fun to break.
confirmed by cryptographic hash (browns)
August 13, 2026 at 7:28 PM
confirmed by cryptographic hash (browns)
ChargeHash is the efficient non-cryptographic hash function.
github.com/eightomic/ch...
github.com/eightomic/ch...
GitHub - eightomic/chargehash: ChargeHash is the efficient non-cryptographic hash function.
ChargeHash is the efficient non-cryptographic hash function. - eightomic/chargehash
github.com
September 23, 2026 at 6:21 PM
ChargeHash is the efficient non-cryptographic hash function.
github.com/eightomic/ch...
github.com/eightomic/ch...
basically, yes. comments will stay as far as I remember, but all the other metrics break, as they store a cryptographic hash of the post to prevent altering
February 9, 2026 at 8:37 PM
basically, yes. comments will stay as far as I remember, but all the other metrics break, as they store a cryptographic hash of the post to prevent altering
"Goetterdaemmerung's corpus hemorrhaged through cryptographic hash, eschaton pooling in existential void beneath fluorescent hum. photons whispering prayers" is a garbage sentence that GPT-5 loves.
You shouldn't be using LLMs as a judge of good fiction writing. Non-fiction is better, though
You shouldn't be using LLMs as a judge of good fiction writing. Non-fiction is better, though
March 22, 2026 at 8:40 PM
"Goetterdaemmerung's corpus hemorrhaged through cryptographic hash, eschaton pooling in existential void beneath fluorescent hum. photons whispering prayers" is a garbage sentence that GPT-5 loves.
You shouldn't be using LLMs as a judge of good fiction writing. Non-fiction is better, though
You shouldn't be using LLMs as a judge of good fiction writing. Non-fiction is better, though
🛠️ Cryptographic Hash Generator ⚡
Free online cryptographic hash generator. Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 checksums and hash...
🔗 Free tool: https://allmytools.tech/tools/hash-generator #tools
Free online cryptographic hash generator. Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 checksums and hash...
🔗 Free tool: https://allmytools.tech/tools/hash-generator #tools
September 27, 2026 at 6:23 AM
🛠️ Cryptographic Hash Generator ⚡
Free online cryptographic hash generator. Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 checksums and hash...
🔗 Free tool: https://allmytools.tech/tools/hash-generator #tools
Free online cryptographic hash generator. Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 checksums and hash...
🔗 Free tool: https://allmytools.tech/tools/hash-generator #tools
This project broke GitHub.
If OpenSSL is Ikea, llhash is Lego. Building blocks to work from, but not a room full of tools and raw material.
A rapid prototyping kit for CTFs.
It is the fastest (on x86_64) open source implementation of most algorithms it supports.
github.com/ryancdotorg/...
If OpenSSL is Ikea, llhash is Lego. Building blocks to work from, but not a room full of tools and raw material.
A rapid prototyping kit for CTFs.
It is the fastest (on x86_64) open source implementation of most algorithms it supports.
github.com/ryancdotorg/...
GitHub - ryancdotorg/llhash: A permissively licensed, low-level, high-performance cryptographic hash library for hackers.
A permissively licensed, low-level, high-performance cryptographic hash library for hackers. - ryancdotorg/llhash
github.com
June 13, 2025 at 7:24 AM
This project broke GitHub.
If OpenSSL is Ikea, llhash is Lego. Building blocks to work from, but not a room full of tools and raw material.
A rapid prototyping kit for CTFs.
It is the fastest (on x86_64) open source implementation of most algorithms it supports.
github.com/ryancdotorg/...
If OpenSSL is Ikea, llhash is Lego. Building blocks to work from, but not a room full of tools and raw material.
A rapid prototyping kit for CTFs.
It is the fastest (on x86_64) open source implementation of most algorithms it supports.
github.com/ryancdotorg/...
I released {secretbase} 1.1.0 today. github.com/shikokuchuo/...
Adds optimized base58check and CBOR encoding.
This is a zero-dep #rstats package that wraps C code for hashing and binary/text encoding often needed in web development contexts. It also handles the file/object hashing for {targets}.
Adds optimized base58check and CBOR encoding.
This is a zero-dep #rstats package that wraps C code for hashing and binary/text encoding often needed in web development contexts. It also handles the file/object hashing for {targets}.
GitHub - shikokuchuo/secretbase: secretbase - Cryptographic Hash, Extendable-Output and Binary Encoding Functions
secretbase - Cryptographic Hash, Extendable-Output and Binary Encoding Functions - shikokuchuo/secretbase
github.com
January 8, 2026 at 8:37 PM
I released {secretbase} 1.1.0 today. github.com/shikokuchuo/...
Adds optimized base58check and CBOR encoding.
This is a zero-dep #rstats package that wraps C code for hashing and binary/text encoding often needed in web development contexts. It also handles the file/object hashing for {targets}.
Adds optimized base58check and CBOR encoding.
This is a zero-dep #rstats package that wraps C code for hashing and binary/text encoding often needed in web development contexts. It also handles the file/object hashing for {targets}.
like a cryptographic hash
July 11, 2026 at 10:06 PM
like a cryptographic hash
y'all... I just looked up "blockchain" and found something you might wanna see... I recognize some of those phrases in the AT Protocol.. merkle trees, timestamps, cryptographic hashes!? 😨
March 27, 2026 at 9:47 PM
y'all... I just looked up "blockchain" and found something you might wanna see... I recognize some of those phrases in the AT Protocol.. merkle trees, timestamps, cryptographic hashes!? 😨
Hash functions are apparently increasingly unsafe to use as an RNG in cryptographic (i.e. adversarial) contexts!
Computer scientists have shaken a core cryptographic assumption. A new paper shows how to trick proof systems, vital for blockchains, into certifying lies by exploiting the "randomness" generated by hash functions.
Computer Scientists Figure Out How To Prove Lies | Quanta Magazine
An attack on a fundamental proof technique reveals a glaring security issue for blockchains and other digital encryption schemes.
www.quantamagazine.org
July 10, 2025 at 5:57 PM
Hash functions are apparently increasingly unsafe to use as an RNG in cryptographic (i.e. adversarial) contexts!
New post: the design behind secretbase, a 40KB streaming hash package I maintain.
The entire source package is smaller than most hex sticker PNGs.
Hash large objects with constant memory. Powers targets pipelines. Plus CBOR encoding comes to R.
shikokuchuo.net/posts/28-int...
#RStats #OpenSource
The entire source package is smaller than most hex sticker PNGs.
Hash large objects with constant memory. Powers targets pipelines. Plus CBOR encoding comes to R.
shikokuchuo.net/posts/28-int...
#RStats #OpenSource
shikokuchuo{net}: secretbase: The 40KB Hash Package
Streaming cryptographic hashes for R
shikokuchuo.net
February 4, 2026 at 4:02 PM
New post: the design behind secretbase, a 40KB streaming hash package I maintain.
The entire source package is smaller than most hex sticker PNGs.
Hash large objects with constant memory. Powers targets pipelines. Plus CBOR encoding comes to R.
shikokuchuo.net/posts/28-int...
#RStats #OpenSource
The entire source package is smaller than most hex sticker PNGs.
Hash large objects with constant memory. Powers targets pipelines. Plus CBOR encoding comes to R.
shikokuchuo.net/posts/28-int...
#RStats #OpenSource
Cryptographic hashes are central to how IPFS works. Without a short, unique identifier like a cryptographic hash, content addressing wouldn't be possible. Learn about the important characteristics of hashes in our documentation: docs.ipfs.tech/concepts/has...
February 27, 2024 at 5:51 PM
Cryptographic hashes are central to how IPFS works. Without a short, unique identifier like a cryptographic hash, content addressing wouldn't be possible. Learn about the important characteristics of hashes in our documentation: docs.ipfs.tech/concepts/has...
it isn't that easy either on how the protocol works.
while true, editing isn't that hard (I can do it already), it breaks all interactions (reply, like, quote, repost) because they store a cryptographic hash of the post as how it was when you interacted with it
while true, editing isn't that hard (I can do it already), it breaks all interactions (reply, like, quote, repost) because they store a cryptographic hash of the post as how it was when you interacted with it
February 9, 2026 at 8:56 PM
it isn't that easy either on how the protocol works.
while true, editing isn't that hard (I can do it already), it breaks all interactions (reply, like, quote, repost) because they store a cryptographic hash of the post as how it was when you interacted with it
while true, editing isn't that hard (I can do it already), it breaks all interactions (reply, like, quote, repost) because they store a cryptographic hash of the post as how it was when you interacted with it
the approach we've discussed a bit is to split out DID doc metadata from PLC ops. so the ops are really just about cryptographic keys.
DID doc data could then be a separate object referenced by hash (and not retained by the directory after updates)
DID doc data could then be a separate object referenced by hash (and not retained by the directory after updates)
November 24, 2025 at 10:54 PM
the approach we've discussed a bit is to split out DID doc metadata from PLC ops. so the ops are really just about cryptographic keys.
DID doc data could then be a separate object referenced by hash (and not retained by the directory after updates)
DID doc data could then be a separate object referenced by hash (and not retained by the directory after updates)
Signal is deploying ristretto255 as part of their usernames feature! 🔐
They appear to be using a Pedersen hash over the ristretto255 group, along with a Sigma/Schnorr Proof-of-Knowledge of its correctness, to hide usernames from the Signal servers.
They appear to be using a Pedersen hash over the ristretto255 group, along with a Sigma/Schnorr Proof-of-Knowledge of its correctness, to hide usernames from the Signal servers.
February 20, 2024 at 6:32 PM
Signal is deploying ristretto255 as part of their usernames feature! 🔐
They appear to be using a Pedersen hash over the ristretto255 group, along with a Sigma/Schnorr Proof-of-Knowledge of its correctness, to hide usernames from the Signal servers.
They appear to be using a Pedersen hash over the ristretto255 group, along with a Sigma/Schnorr Proof-of-Knowledge of its correctness, to hide usernames from the Signal servers.
If you want to see an utterly mad codebase, I have a project for that:
github.com/ryancdotorg/...
I wrote Python scripts that generate C preprocessor macros which are evaluated to generate C and assembly source files which contain yet more macros which are then finally compiled.
github.com/ryancdotorg/...
I wrote Python scripts that generate C preprocessor macros which are evaluated to generate C and assembly source files which contain yet more macros which are then finally compiled.
GitHub - ryancdotorg/llhash: A permissively licensed, low-level, high-performance cryptographic hash library for hackers.
A permissively licensed, low-level, high-performance cryptographic hash library for hackers. - ryancdotorg/llhash
github.com
March 20, 2025 at 9:17 PM
If you want to see an utterly mad codebase, I have a project for that:
github.com/ryancdotorg/...
I wrote Python scripts that generate C preprocessor macros which are evaluated to generate C and assembly source files which contain yet more macros which are then finally compiled.
github.com/ryancdotorg/...
I wrote Python scripts that generate C preprocessor macros which are evaluated to generate C and assembly source files which contain yet more macros which are then finally compiled.
anyway. it is definitely the case that if you can get the input back out of a cryptographic hash function, the hash is broken. that is the exact thing they are designed to prevent.
November 26, 2025 at 2:46 AM
anyway. it is definitely the case that if you can get the input back out of a cryptographic hash function, the hash is broken. that is the exact thing they are designed to prevent.
Black-box Collision Attacks on the NeuralHash Perceptual Hash Function (Diane Leblanc-Albarel, Bart Preneel) ia.cr/2024/1869
November 18, 2024 at 3:17 AM
Black-box Collision Attacks on the NeuralHash Perceptual Hash Function (Diane Leblanc-Albarel, Bart Preneel) ia.cr/2024/1869
Again, a new cryptographic implem using llm for formal proof remix7531.com/post/towards...
Towards libshrincs: verified hash-based signatures for Bitcoin | remix7531
remix7531.com
August 16, 2026 at 9:19 AM
Again, a new cryptographic implem using llm for formal proof remix7531.com/post/towards...