Posts
Exact Coset Sampling for Quantum Lattice Algorithms
Yifan Zhang just published a [manuscript](https://arxiv.org/pdf/2509.12341) claiming to have fixed the bug on Yiley Chen's quantum algorithm for LWE.
Predictable pattern in the numbers used to build SHA-256
Have a nice day! import mpmath as mp mp.mp.dps = 50 def fractional_sqrt(x: mp.mpf) -> mp.mpf: r = mp.sqrt(x) return r - mp.floor(r) def sha256_frac_to_u32_hex(frac: mp.mpf) -> str: val = int(mp.floor(frac * (1 << 32))) return f"0x{val:08x}" # First 8 primes from known values primes = [2, 3, 5, 7, …
You don't need quantum hardware for post-quantum security
Interpretation of dieharder results for QRNG with Toeplitz randomicity extraction and dependence on minimum entropy.
Hi all, as part of my PhD, I am currently developing a QRNG with Toeplitz hashing as the extractor. I would gladly provide all the details, but I am currently looking to get these results published and the field is quite hot at the moment. If anyone is interested in …
Building a Career in Auditing Cryptographic Software
In a previous post I asked for tips on auditing crypto software on my spare time (https://www.reddit.com/r/crypto/comments/1myz2il/tips\_on\_auditing\_cryptographic\_source\_code/) I am still doing CryptoPals in preparation for auditing GNUPG. I am now considering a career in auditing / attacking cryptographic software. Aside from CryptoPals and CryptoHack what would be other ways to …
Introducing CurveForge: auto-optimizing elliptic curve DSL
A Warm Welcome to ASN.1 and DER
What is the best Way to get in to Cryptography
Hello I am a Bit of a Beginner when it come to this field of study I am a Student that is Studying IT and I want to get my Hand wet a bit with This Field What would be the best Resources to learn from or Any courses that …
Fast Tor Onion Service vanity address generator
Help with this “Rubik”-themed crypto challenge: ASCII numbers + 443–447 outliers
[](https://www.reddit.com/r/codes/?f=flair_name%3A%22Unsolved%22) I’m stuck on a [practice cryptography challenge](https://ctf.cgii.gob.bo/). I’ve tried modifying rotations, brute-forcing, and analyzing the permutation structure, but I’m not getting closer to the hash. Has anyone tackled something like this before or can suggest resources/methods I should look into? (hash could be in spanish) the result should be …