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#cryptography

43 posts42 participants8 posts today

I just published two cryptography attacks on Uppy Companion, a tool for downloading/uploading documents from various cloud storage providers.

github.com/transloadit/uppy/is

github.com/transloadit/uppy/is

These attacks allow the recovery of the access tokens/refresh tokens of the various cloud provider, enabling an attacker having access to a stolen encrypted cookie value to get access to the cloud storage.

Once again, people: do not roll your own crypto! 😮‍💨
Using plain AES-CBC, deriving secrets with SHA256 and the sign-then-encrypt paradigm are not best practices.

Initial checklist I understand this is a bug report and questions should be posted in the Community Forum I searched issues and couldn’t find anything (or linked relevant results below) Link to run...
GitHubEncryption Key Wear-out Leading to access_token/refresh_token Recovery in Uppy Companion · Issue #5705 · transloadit/uppyBy X-Cli
Continued thread

Lo and behold, #OpenSSL 3.5 (their upcoming LTS release) will come out here at the beginning of April, and it does indeed support some of these hybrid PQC schemes. Their recent beta2 announcement can be read here: openssl-library.org/post/2025- and their roadmap is at openssl-library.org/roadmap/in

Very excited by this work. Big kudos to the OpenSSL Team here! 🥳🎉 Already planning on giving this a spin with the C implementation of #Tor later this week to see how it goes!

OpenSSL Library · OpenSSL 3.5 Beta Release AnnouncementThe OpenSSL Project is pleased to announce that OpenSSL 3.5 Beta1 pre-release is released and adding significant new functionality to the OpenSSL Library.

If I have a #codeberg account set up, with a verified #ssh key on my account and the corresponding public and private keys in `~/.ssh/`, is there a way that I can make it so that it doesn't ask me for my keyphrase every time I push? I'm sure VSCode could do this, but since I've switched to #Helix, which doesn't have git built-in I've been manually doing the git stuff.
My knowledge of #cryptography and #git are well and truly at the 'barely enough to get myself into trouble' level.
#AskFedi

sciencealert.com/quantum-compu

Researchers from the US and UK used Quantinuum's 56-qubit quantum computer to generate a truly random number for the first time, demonstrating quantum physics' inherent randomness and its potential for secure electronic communication.

The team's experiment, using Aaronson and Hung's protocol, verified the result's randomness across multiple supercomputers, setting a new standard for quantum security.

ScienceAlert · Quantum Computer Generates Truly Random Number in Scientific FirstA quantum machine has used entangled qubits to generate a number certified as truly random for the first time, demonstrating a handy function that's physically beyond even the most powerful supercomputer.

Ars Technica: FBI raids home of prominent computer scientist who has gone incommunicado . “A prominent computer scientist who has spent 20 years publishing academic papers on cryptography, privacy, and cybersecurity has gone incommunicado, had his professor profile, email account, and phone number removed by his employer, Indiana University, and had his homes raided by the FBI. No one knows […]

https://rbfirehose.com/2025/03/31/ars-technica-fbi-raids-home-of-prominent-computer-scientist-who-has-gone-incommunicado/

#FBI raids home of prominent computer scientist who has gone #incommunicado

A prominent computer scientist who has spent 20 years publishing academic papers on #cryptography , #privacy , and #cybersecurity has gone incommunicado, had his professor profile, email account, and phone number removed by his employer #IndianaUniversity , and had his homes raided by the FBI. No one knows why.

arstechnica.com/security/2025/

Ars Technica · FBI raids home of prominent computer scientist who has gone incommunicadoBy Dan Goodin

FBI raids home of prominent computer scientist who has gone incommunicado

> A prominent computer #scientist who has spent 20 years publishing #academic papers on #cryptography, privacy, and cybersecurity has gone incommunicado, had his professor profile, email account, and phone number removed by his employer #Indiana #University, and had his homes #raided by the #FBI. No one knows why.

> Xiaofeng Wang has a long list of prestigious titles. He was... arstechnica.com/security/2025/

Ars Technica · FBI raids home of prominent computer scientist who has gone incommunicadoBy Dan Goodin

I'm bored.

I really want to do something with #Cryptography like #Certificates, etc.

I don't know though. What do people do with this? I want to make something that works everywhere as an experiment that may end up being fully used.

Making my own certs require having a trusted #CARoot which not every system will have. Could do that but I don't see a point really.

Not sure right now, any ideas from the audience?