upofadown

4 ms·

1.
by upofadown 6d ago
Hard to judge. The bottleneck is the phase of the algorithm where a really big linear system needs to be solved. That takes a lot of communication between nodes. The breakthrough in using GPUs is that there is good communication between nod
2.
by upofadown 6d ago
Is someone providing prize money again? RSA ended the contest in 2007.
3.
by upofadown 9d ago
Well most people don't verify identity with some sort of physical key. So it doesn't work as an analogy in the first place for signatures...
4.
The XMPP Newsletter August 2026(xmpp.org)
4 points by upofadown 10d ago|0 comments
5.
by upofadown 12d ago
Allegedly, Signalgate was caused by Apple helpfully mapping the wrong number to a name. Then Signal mapped that number to the wrong cryptographic identity. A Third Party Breached The Intercept’s Signal Tip Line and Has Been Soliciting Whist
6.
by upofadown 13d ago
Unfortunately, in an end to end encrypted messaging system, an identity is denoted by some sort of long number. That is an inescapable fact. Trusting a third party to correctly map, say, a phone number to a cryptographic identity number ev
7.
Starlink Signal Leakage Threatens Radio Astronomy's Most Critical Frequencies(gadgetreview.com)
143 points by upofadown 14d ago|86 comments
8.
A Decade of Hype, 3k Roofs, and One Redirect URL: Tesla Kills the Solar Roof(gadgetreview.com)
18 points by upofadown 14d ago|7 comments
9.
by upofadown 18d ago
What does the speed of RSA have to do with anything?
10.
by upofadown 18d ago
My article: 2048 Bit RSA and the Year 2030 https://articles.59.ca/doku.php?id=em:20482030 We don't have any way to predict when and if 2048 bit RSA would be factorable at this time. We would need a breakthrough in hard
11.
by upofadown 18d ago
This article from 2000 is about estimating what would be required to factor 1024 bit RSA: A Cost-Based Security Analysis of Symmetric and Asymmetric Key Lengths https://cr.yp.to/bib/2000/silverman.pdf It was a res
12.
by upofadown 20d ago
I note that that extensive list only contains a single death, due to a power failure. Extreme civil disobedience, but not really terrorism.
13.
by upofadown 20d ago
You can attempt 15 yourself if you want: https://towardsdatascience.com/where-are-we-with-shors-algor... If you run it over and over again you will eventually get 3 or 5...
14.
by upofadown 21d ago
This article (mine) is about this: 2048 Bit RSA and the Year 2030 https://articles.59.ca/doku.php?id=em:20482030 I guess it could be updated to include this latest factoring result. Said result would not change the conclusi
15.
by upofadown 21d ago
It's not just because the GPG user is small fry that 1024 bit RSA is low risk for them. It is mostly because there is only one of them. A nation state attacker would have to spend billions of dollars and years of lost opportunity to us
16.
What is known about how Eric Lu factored the 862-bit RSA-260 after 35 years(lilting.ch)
15 points by upofadown 22d ago|1 comments
17.
The Server Called Paranoia: Defend Autistici/Inventati Before Sept25 Sabot Media(wewillfreeus.org)
15 points by upofadown 28d ago|4 comments
18.
by upofadown 1mo ago
OBSD Amsterdam is pretty cool. I am currently running an instance on it. One feature that could also be considered a bug is that the VPSes run on the native OpenBSD virtualization scheme. My instance has suffered a few crashes over the year
19.
by upofadown 1mo ago
OVH doesn't seem to directly support installation of arbitrary images. So installing OpenBSD can be a bit awkward. A relevant search: * https://searxng.shreven.org/search?q=openbsd+ovhcloud
20.
by upofadown 1mo ago
You can always send and receive messages no matter what XEPs are supported. Not that that is a problem in practice. There is a fairly well established subset of XEPs that everyone supports. https://xmpp.org/extensions/x
21.
by upofadown 2mo ago
Wait, Mastodon has 10 million users and 8000 servers? That's way more than I would of guessed. So Mastodon is a real thing in the world now. Twitter has something like a half a billion users. So it wins I guess...
22.
(ADVANCED) Guide to not fucking up QR codes(infosec.exchange)
16 points by upofadown 2mo ago|5 comments
23.
Cellebrite zero-day exploit used to target phone of Serbian student activist(securitylab.amnesty.org)
4 points by upofadown 2mo ago|0 comments
24.
by upofadown 2mo ago
It was never allowed. Microsoft just started doing it in their email client and obnoxiously made it default. There was no standards process where anyone spent time considering the potential downsides with the aim of making HTML email practi
25.
by upofadown 2mo ago
>Neither mode is encrypted: whatever is on the sending screen is readable by any camera pointed at it. Something like this would be good for transferring the public key(s) associated with some cryptographic messaging identity. This would
26.
by upofadown 2mo ago
GPS is direct sequence spread spectrum. You might be thinking of frequency hopping, jamming that is harder, but you are only working against super weak signals from satellites. It would still be quite possible.
27.
by upofadown 2mo ago
A rehash of the paywalled Wired article: * https://futurism.com/science-energy/us-military-gps-jamming-...
28.
by upofadown 2mo ago
The point of the comic is pretty obviously to make fun of the expectations of cryptography geeks; you know, the sort of people who use 4096 bit RSA keys for the coolness factor. It is a stretch to imply it is suggesting that encryption is s
29.
by upofadown 2mo ago
To avoid a potential misunderstanding, the maintenance mode is intended to continue indefinitely. Briar project is not shutting down. * https://briarproject.org/news/2026-maintenance-mode/
30.
by upofadown 3mo ago
>...and conductive, rivaling copper. That isn't true for either thermal or electrical conductivity. So I don't know what is meant here.

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