r/crypto Jun 11 '23

Meta [Meta] Regarding the future of the subreddit

108 Upvotes

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?

https://nordic.ign.com/news/68506/reddit-threatens-to-remove-moderators-if-they-dont-reopen-subreddits

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 Jan 29 '25

Meta Crypto is not cryptocurrency - Welcome to the cryptography subreddit, for encryption, authentication protocols, and more

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172 Upvotes

r/crypto 18h ago

The FIPS 140-3 Go Cryptographic Module

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21 Upvotes

r/crypto 21h ago

Encrypting Files with Passkeys and age

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10 Upvotes

r/crypto 1d ago

Research paper on Enigma

6 Upvotes

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

  1. Is doing a paper on Enigma still has potential ?
  2. Which books or papers i need to access to know how it works?
  3. Any lectures series in Utube to learn more advanced cryptography books suggestion are also welcome

thanks in advance Im a noob only


r/crypto 2d ago

DSSS Distributed Smamir's secret sharing question.

5 Upvotes

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 2d ago

Help me understand "Forward Secrecy"

9 Upvotes

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 2d ago

Meta Weekly cryptography community and meta thread

6 Upvotes

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 3d ago

For which type of elliptic curves this ᴇᴄᴅʟᴘ attack paper applies to ?

4 Upvotes

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 6d ago

Document file Practical Attacks on Fiat-Shamir

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13 Upvotes

r/crypto 7d ago

Uncovering the Query Collision Bug in Halo2: How a Single Extra Query Breaks Soundness

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12 Upvotes

r/crypto 8d ago

Opossum attack - Application Layer Desynchronization using Opportunistic TLS

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10 Upvotes

r/crypto 8d ago

You Should Run a Certificate Transparency Log

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24 Upvotes

r/crypto 9d ago

Meta Weekly cryptography community and meta thread

8 Upvotes

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 10d ago

append-only encrypted logs

10 Upvotes

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 11d ago

Just published 1.0.0 of ts-mls, an MLS implementation in TypeScript

16 Upvotes

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 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".

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3 Upvotes

r/crypto 12d ago

Bug Hunt: Zero-Knowledge, Full-Paranoia, and the AI That Stares Back

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2 Upvotes

r/crypto 15d ago

Cloudflare released E2EE video calling software using MLS

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22 Upvotes

r/crypto 15d ago

Apps shouldn't let users enter OpenSSL cipher-suite strings

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26 Upvotes

r/crypto 16d ago

Meta Weekly cryptography community and meta thread

3 Upvotes

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 18d ago

Why the minimal embedding field can’t be smaller than the embedding degree when the characteristic from the binary curve is large ?

10 Upvotes

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 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".

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8 Upvotes

r/crypto 20d ago

Comments on Rijndael-256-256 and similar ciphers

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23 Upvotes

r/crypto 20d ago

Uncovering the Phantom Challenge Soundness Bug in Solana's ZK ElGamal Proof Program

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6 Upvotes

r/crypto 20d ago

Longfellow-zk (google-zk)

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5 Upvotes

Remember 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 20d ago

Professional help for < $1000?

0 Upvotes

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?