ALAlifatisk·Sep 12, 2023
Here's an implementation for this
https://github.com/joelparkerhenderson/sha256-sentence
In The SHA256 for this sentence begins with: one, eight, two, a, seven, c and nine.joelparkerhenderson
sha256-sentence
Rust2023–2023
joelparkerhenderson / sha256-sentence
sha256-sentence
SHA256 sentence: discover a SHA256 checksum that matches a sentence's description of hex digit words.
2Distinct people
3Mentions
0Explicit recommenders
20GitHub stars
What to know before exploring
What it is
SHA256 sentence: discover a SHA256 checksum that matches a sentence's description of hex digit words.
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by hour3 dated mentions
Observed mentions: 2023-09-11 20:54:01 UTC to 2023-09-12 10:52:57 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| Sep 11, 20:00 | 2023-09-11 20:00:00 UTC | 2023-09-11 21:00:00 UTC | 1 | 0 | 1 |
| Sep 11, 21:00 | 2023-09-11 21:00:00 UTC | 2023-09-11 22:00:00 UTC | 0 | 0 | 0 |
| Sep 11, 22:00 | 2023-09-11 22:00:00 UTC | 2023-09-11 23:00:00 UTC | 0 | 0 | 0 |
| Sep 11, 23:00 | 2023-09-11 23:00:00 UTC | 2023-09-12 00:00:00 UTC | 0 | 0 | 0 |
| Sep 12, 00:00 | 2023-09-12 00:00:00 UTC | 2023-09-12 01:00:00 UTC | 0 | 0 | 0 |
| Sep 12, 01:00 | 2023-09-12 01:00:00 UTC | 2023-09-12 02:00:00 UTC | 0 | 0 | 0 |
| Sep 12, 02:00 | 2023-09-12 02:00:00 UTC | 2023-09-12 03:00:00 UTC | 1 | 1 | 0 |
| Sep 12, 03:00 | 2023-09-12 03:00:00 UTC | 2023-09-12 04:00:00 UTC | 0 | 0 | 0 |
| Sep 12, 04:00 | 2023-09-12 04:00:00 UTC | 2023-09-12 05:00:00 UTC | 0 | 0 | 0 |
| Sep 12, 05:00 | 2023-09-12 05:00:00 UTC | 2023-09-12 06:00:00 UTC | 0 | 0 | 0 |
| Sep 12, 06:00 | 2023-09-12 06:00:00 UTC | 2023-09-12 07:00:00 UTC | 0 | 0 | 0 |
| Sep 12, 07:00 | 2023-09-12 07:00:00 UTC | 2023-09-12 08:00:00 UTC | 0 | 0 | 0 |
| Sep 12, 08:00 | 2023-09-12 08:00:00 UTC | 2023-09-12 09:00:00 UTC | 0 | 0 | 0 |
| Sep 12, 09:00 | 2023-09-12 09:00:00 UTC | 2023-09-12 10:00:00 UTC | 0 | 0 | 0 |
| Sep 12, 10:00 | 2023-09-12 10:00:00 UTC | 2023-09-12 11:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
3 sourcesShow HN: SHA256 sentence demo with Rust, rayon, once_cell, Rosetta code iterator
14 points · Open discussionRust implementation...
The code searches permutations of increasing length. Benchmark is 8 seconds on a MacBook Pro M1 to discover the match of 182a7c9. The code is not yet optimized.
use std::time::SystemTime;
use itertools::Itertools;
use sha256::digest;
fn main() {
let digits: [usize; 16] = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
let chars = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"];
let words = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "a", "b", "c", "d", "e", "f"];
let mut length = 2;
let start = SystemTime::now();
loop {
for permutation in digits.iter().permutations(length) {
let parts = permutation.iter().map(|x| words[**x]).collect_vec();
Read the rest
let sentence = format!(
"The SHA256 for this sentence begins with: {} and {}.",
&parts[0..(parts.len() - 1)].join(", "),
&parts[parts.len() - 1]
);
let checksum: String = digest(&sentence);
let starts: String = permutation.iter().map(|x| chars[**x]).collect();
if checksum.starts_with(&starts) {
println!("milliseconds: {:?}, {} ", start.elapsed().unwrap().as_millis(), &sentence);
}
};
length += 1;
}
}
Output:
milliseconds: 3, The SHA256 for this sentence begins with: zero, b, six and two.
milliseconds: 54, The SHA256 for this sentence begins with: zero, e, d, eight and f.
milliseconds: 8279, The SHA256 for this sentence begins with: one, eight, two, a, seven, c and nine.
Repository:
https://github.com/joelparkerhenderson/sha256-sentence