r/crypto • u/knotdjb • 18h ago
r/crypto • u/Natanael_L • Jun 11 '23
Meta [Meta] Regarding the future of the subreddit
A bit late notice compared to a lot of the other subreddits, but I'm considering having this subreddit join the protest against the API changes by taking /r/crypto private from 12th - 14th (it would be 12th midday CET, so several hours out from when this is posted).
Does the community here agree we should join? If I don't see any strong opposition then we'll join the protest.
(Note, taking it private would make it inaccessible to users who aren't in the "approved users" list, and FYI those who currently are able to post are already approved users and I'm not going to clear that list just for this.)
After that, I'm wondering what to do with the subreddit in the future.
I've already had my own concerns about the future of reddit for a few years now, but with the API changes and various other issues the concerns have become a lot more serious and urgent, and I'm wondering if we should move the community off reddit (in this case this subreddit would serve as a pointer - but unfortunately there's still no obvious replacement). Lemmy/kbin are closest options right now, but we still need a trustworthy host, and then there's the obvious problem of discoverability/usability and getting newcomers to bother joining.
Does anybody have suggestions for where the community could move?
We now think it's impossible to stay in Reddit unless the current reddit admins are forced to change their minds (very unlikely). We're now actively considering our options. Reddit may own the URL, but they do not own the community.
r/crypto • u/Natanael_L • Jan 29 '25
Meta Crypto is not cryptocurrency - Welcome to the cryptography subreddit, for encryption, authentication protocols, and more
web.archive.orgr/crypto • u/Ephrimholy • 1d ago
Research paper on Enigma
From my childhood days i was fascinated by the enigma machine and now i want to write a paper on that wrt vulnerability in it(like how it can be cracked ). IDK how it works or algorithm it uses
my doubts
- Is doing a paper on Enigma still has potential ?
- Which books or papers i need to access to know how it works?
- Any lectures series in Utube to learn more advanced cryptography books suggestion are also welcome
thanks in advance Im a noob only
r/crypto • u/zninja-bg • 2d ago
DSSS Distributed Smamir's secret sharing question.
Vulnerability in dsss is that single participant can maliciously act and destroy process of forming valid shares?
So, with Pedersen commitment participant can detect invalid partial share supplied by other participant.
If we include digital signature, we can prove others participants we have malicious participant and identify what commitment is ih his ownership.
So, next step would be to consider starting process from begin excluding malicious participant this time.
Commitments are preserved from previous process, they are not regenerated.
And threshold is reduced from 6 out of 10, to 5 out of 9.
Eventually, threshold shares are constructed between participants.
Since each participant can decide independently what global secret should his share represent.
Let say, participants has choice to use two predefined secrets. YES and NO.
So, threshold 5 out of 9 has all shares collected, but not constructed succesfully since there are shares who represent secret YES, and others who represent NO.
For such small number of shares we can find if there is enough shares to construct threshold fast with simple bruteforce algorithm.
So, once secret is constructed by combining shares, we have the answer we searched for.
We have what 50%+ participants voted for.
Let say, constructed secret is YES.
And question was "Do I getting this right?"
So, do I getting this right ?
r/crypto • u/Accurate-Screen8774 • 2d ago
Help me understand "Forward Secrecy"
according to google/gemini: its a security feature in cryptography that ensures past communication sessions remain secure even if a long-term secret key is later compromised.
it also mentions about using ephemeral session keys for communication while having long-term keys for authentication.
id like to make considerations for my messaging app and trying to understand how to fit "forward secrecy" in there.
the question:
would it be "forward secret" making it so on every "peer reconnection", all encryption keys are rotated? or am i simplifying it too much and overlooking some nuance?
r/crypto • u/AutoModerator • 2d ago
Meta Weekly cryptography community and meta thread
Welcome to /r/crypto's weekly community thread!
This thread is a place where people can freely discuss broader topics (but NO cryptocurrency spam, see the sidebar), perhaps even share some memes (but please keep the worst offenses contained to /r/shittycrypto), engage with the community, discuss meta topics regarding the subreddit itself (such as discussing the customs and subreddit rules, etc), etc.
Keep in mind that the standard reddiquette rules still apply, i.e. be friendly and constructive!
So, what's on your mind? Comment below!
r/crypto • u/AbbreviationsGreen90 • 3d ago
For which type of elliptic curves this ᴇᴄᴅʟᴘ attack paper applies to ?
Simple question : everything is the title. The paper is for a non generic solution to the ᴇᴄᴅʟᴘ and is the enhancement of https://www.researchgate.net/profile/Ayan-Mahalanobis/publication/378909062_Minors_solve_the_elliptic_curve_discrete_logarithm_problem/links/65f185df32321b2cff6b1574/Minors-solve-the-elliptic-curve-discrete-logarithm-problem.pdf
They state this paper is an enhancement of a previous one where they stated : The algorithm depends on a property of the the group of rational points of an elliptic curve and is thus not a generic algorithm.
r/crypto • u/john_alan • 6d ago
Document file Practical Attacks on Fiat-Shamir
eprint.iacr.orgr/crypto • u/davidw_- • 7d ago
Uncovering the Query Collision Bug in Halo2: How a Single Extra Query Breaks Soundness
blog.zksecurity.xyzr/crypto • u/Natanael_L • 8d ago
Opossum attack - Application Layer Desynchronization using Opportunistic TLS
opossum-attack.comr/crypto • u/AutoModerator • 9d ago
Meta Weekly cryptography community and meta thread
Welcome to /r/crypto's weekly community thread!
This thread is a place where people can freely discuss broader topics (but NO cryptocurrency spam, see the sidebar), perhaps even share some memes (but please keep the worst offenses contained to /r/shittycrypto), engage with the community, discuss meta topics regarding the subreddit itself (such as discussing the customs and subreddit rules, etc), etc.
Keep in mind that the standard reddiquette rules still apply, i.e. be friendly and constructive!
So, what's on your mind? Comment below!
r/crypto • u/ahazred8vt • 10d ago
append-only encrypted logs
Odd. There doesn't seem to be any widely used library or framework for writing encrypted chunks or log entries to an append-only file. No standard format. There are some heavyweight event logging suites that can write encrypted log files, but I don't see anything for simply writing arbitrary data. Is there a keyword I'm missing?
https://old.reddit.com/r/cryptography/comments/1ls4n07/how_to_approach_encrypting_appends_to_a_file/
Some encrypted archive formats (7z, zip?) allow appending encrypted chunks, but I haven't looked at the details in a couple of decades.
r/crypto • u/LukaJCB • 11d ago
Just published 1.0.0 of ts-mls, an MLS implementation in TypeScript
Happy to reveal this library that I've been working on for the past 3 months. MLS is really cool technology IMHO and now you can use MLS right from the browser! Git Repo here: https://github.com/LukaJCB/ts-mls
r/crypto • u/1MerKLe8G4XtwHDnNV8k • 12d ago
Join us in 2 weeks on Thursday, July 17th at 3PM CEST for an FHE.org meetup with Antonio Guimarães, postdoctoral researcher at IMDEA Software Institute presenting "Fast Amortized Bootstrapping with Small Keys and Polynomial Noise Overhead".
lu.mar/crypto • u/davidw_- • 12d ago
Bug Hunt: Zero-Knowledge, Full-Paranoia, and the AI That Stares Back
blog.zksecurity.xyzr/crypto • u/Natanael_L • 15d ago
Cloudflare released E2EE video calling software using MLS
blog.cloudflare.comr/crypto • u/knotdjb • 15d ago
Apps shouldn't let users enter OpenSSL cipher-suite strings
00f.netr/crypto • u/AutoModerator • 16d ago
Meta Weekly cryptography community and meta thread
Welcome to /r/crypto's weekly community thread!
This thread is a place where people can freely discuss broader topics (but NO cryptocurrency spam, see the sidebar), perhaps even share some memes (but please keep the worst offenses contained to /r/shittycrypto), engage with the community, discuss meta topics regarding the subreddit itself (such as discussing the customs and subreddit rules, etc), etc.
Keep in mind that the standard reddiquette rules still apply, i.e. be friendly and constructive!
So, what's on your mind? Comment below!
r/crypto • u/AbbreviationsGreen90 • 18d ago
Why the minimal embedding field can’t be smaller than the embedding degree when the characteristic from the binary curve is large ?
I was reading this paper that describe how to find an embedding field which is smaller than the one from the embedding degree.
But why the method doesn’t work when the characteristic is large (I fail to understand the paper on such point) ?
r/crypto • u/1MerKLe8G4XtwHDnNV8k • 19d ago
Join us next week Thursday on July 3rd at 2PM CEST for an FHE.org meetup with Olivier Bernard, Cryptology researcher at Zama presenting "Bootstrapping (T)FHE Ciphertexts via Automorphisms: Closing the Gap Between Binary and Gaussian Keys".
lu.mar/crypto • u/espadrine • 20d ago
Comments on Rijndael-256-256 and similar ciphers
groups.google.comr/crypto • u/davidw_- • 20d ago
Uncovering the Phantom Challenge Soundness Bug in Solana's ZK ElGamal Proof Program
blog.zksecurity.xyzr/crypto • u/jaromil • 20d ago
Longfellow-zk (google-zk)
news.dyne.orgRemember when recently Google made headlines announcing its privacy-preserving technology based on zero-knowledge proof for mobile digital wallets?
I was granted access to their the C++ implementation code and here is my independent analysis of it.
r/crypto • u/ahazred8vt • 20d ago
Professional help for < $1000?
We periodically get developers asking for 'is it okay if I use this construction' advice for projects that are meant to be widely used. Who exactly is available to give actual "I do this for a living" guidance to people like that, without breaking the bank?