Is there any formal analysis of the privacy claims about the various 2FA protocols, like W3C WebAuthn, FIDO2, or whatever the different Yubikeys use. As an example, a user might've a FIDO2 device with which they login to both personal …
I am trying to see if Daniel J Bernstein has valid claims on the strength of Classic McEliece over ML-KEM. Bernstein was obviously upset that Kyber was chosen instead. Here is [a link](https://blog.cr.yp.to/20250423-mceliece.html) to his defense of Classic McEliece over …
I was reading the work "[Breaking Bad: How Compilers Can Break Constant-Time Implementations](https://arxiv.org/pdf/2410.13489)". The paper complained compiler updates can destroy the constant-time guarantee even for formally verified constant time code. Why don't compiler developers add support for constant-time compilation?
Or more precisely- *Boundary Constraints in SHA-256 Constant Generation* Figured I'd throw another bread crumb in there for you guys: import math import mpmath as mp mp.mp.dps = 50 # Used to compute the modular distance bounds for the fractional …
One of the complaints that I have heard on this subreddit is that it is hard to design and implement cryptographic software that is misuse resistant--and I am not sure if that is harder than implementing cryptographic software that is …
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.
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 …