datenwolf

6 ms·

1.
by datenwolf 3mo ago
GDPR covers more than just PII.
2.
by datenwolf 1y ago
> There are still some people who need to run 32-bit applications that cannot be updated; the solution he has been pushing people toward is to run a 32-bit user space on a 64-bit kernel. This is a good solution for memory-constrained sy
3.
by datenwolf 1y ago
First things first: It's just "Vulkan". With respect to OpenGL with the current de-facto standard toolkits Qt and GTK you can't really get away from them for the time being, since at the moment they pull in some implemen
4.
by datenwolf 2y ago
Yep
5.
by datenwolf 2y ago
From case witness testimony https://storage.courtlistener.com/recap/gov.uscourts.nysd.63... 12. The forensic analysis also revealed that Elez sent an email with a spreadsheet containing PII to two United Stat
6.
by datenwolf 2y ago
> Some (many?) NASA engineers are at the high end of the band and are advocating a return on Dragon instead. Boeing is obviously at the low end of the band and thinks it is a low risk. To me this gives a strong impression of history rhym
7.
by datenwolf 2y ago
Exactly. If we assume the backdoor via liblzma as a template, this could be a ploy to hook/detour both fprintf and strerror in a similar way. Get it to diffuse into systems that rely on libarchive in their package managers. When the tr
8.
by datenwolf 3y ago
What annoys me the most about Reddit is, that it's essentially just a rehash of Usenet with marginally more moderation features, up/down-voting and custom CSS for each group/subreddit. That's about it. If I were to attem
9.
by datenwolf 3y ago
Strictly speaking, those fat Cookie banners are unlawful under the regulation of the GDPR; the GDPR mandates that a site must not behave functionally different given consent or not, as long as the functionality is not related to a specific
10.
by datenwolf 3y ago
Fun fact: Rust's development saw significant traction and support by Mozilla in the first place to be used for the development of Servo. Or in other words, the eventual development of Servo was, what motivated the development of of Rus
11.
by datenwolf 3y ago
Does anyone know the size of Bandcamp's catalogue. I'm just wondering about hardware costs (storage) would be for prospective competitors who intend to swoop up Bandcamp's customers (artists and listeners). Audio is a lot les
12.
by datenwolf 3y ago
memory-safe language does not imply the use of a VM. It can just as well mean, that the compiler will attempt to execute a proof, that memory is never accessed out of bounds, without well defined ownership and within the lifetime of the und
13.
by datenwolf 3y ago
If you really, really want to ruin an X11 session, I got you covered: https://git.datenwolf.net/codesamples/tree/samples/X11/x11at...
14.
by datenwolf 3y ago
> If I define a function that always returns 1… then it's Kolmogorov complexity is also extremely low. Look if you have a well enough hash function, it output should be near the Shannon limit and hardly compressible, and ideally con
15.
by datenwolf 3y ago
Boltzmann. But it doesn't really matter, it's the same thing. Yes, I know that looking at a sequence of, say 1000 identical bits looks like it's got just 10 bits of entropy after simple RLE compression. But you must not forge
16.
by datenwolf 3y ago
That only works, if you know exactly, that the low bits are constant. Otherwise you may run into the issue that due to unsteady rate of RDTSC between two processes/threads that may be preemptively unscheduled between reading the HPTC a
17.
by datenwolf 3y ago
You don't know precisely at which frequency the cycle counter runs. Depending on the system load it might either run faster or slower than the lowest bits the HPTC. For what it's worth this part is more or less nondeterministic, s
18.
by datenwolf 3y ago
60 bits. Yes, I know, you can compress it down very well. But consider that entropy in computation involves not just the bits you store, but also the bits that the processor touches and eventually dissipates as heat into the universe.
19.
by datenwolf 3y ago
I did update my program, now it measures the ratio.
20.
by datenwolf 3y ago
Actually hashes do create entropy (every computation creates entropy in some form or another). What's the entropy of a 4 bit number? What's the entropy of a 4 bit number hashed by a 64 bit hash function? The act of computation doe
21.
by datenwolf 3y ago
Ah crud, you're right. What'd really be interesting to see is the ratio between d/dt rdtsc and d/dt clock_monotonic.
22.
by datenwolf 3y ago
Because the raw value from the timestamp will be very low entropy and have the short scale variation concentrated in just a few bits. A hash not just destroys information, it also creates entropy by mixing that information over all the bits
23.
by datenwolf 3y ago
It's 64 bit on 64 systems. In the world of hard realtime applications there's still a huge armada of systems out there in the field running on 32 bit (think motion control, CNC machines, industrial robotics). If you're develo
24.
by datenwolf 3y ago
RDTSC is directly influenced by frequency scaling. So while monotonic, its clock interval is neither constant, nor deterministic on modern systems. Here's a small online visualization of RDTSC average and standard deviation I just hack
25.
by datenwolf 3y ago
Well, you can always attempt to catch the CPU cycle counter overflow (happens at roughly 10Hz on current machines), adding up the carries and add it to a nanosecond counter shifted up by a few bits. Problem with the CPU cycle counter is, th
26.
by datenwolf 3y ago
What is this "accuracy" you're talking about? Between the scheduler hanging over a process's head, ready to yank away its compute time for milliseconds between the syscall to read out the HPTC or the CPU cycle counter, a
27.
by datenwolf 3y ago
In other news: Water is wet. The high resolution precision time counters are derived from the system base clock, usually operating at ~33MHz, which translates exactly into that 30ns granularity observed. If you really want robust time deriv
28.
by datenwolf 3y ago
All of it in the relativistic kinetic energy of the beam. The energy in the superconductor magnets is a whole chapter of its own; their energy dissipating into heat is what makes the Helium boil off during a quench. Also static magnetic fie
29.
by datenwolf 3y ago
Or run your own authorative DNS for example.com (or a subdomain used for this) and track queries on those UUID.
30.
by datenwolf 3y ago
A lot of people confuse the passport (Pass) with the national identity card (Personalausweis). There's no place of residence stated on the German passport, but it is part of the Personalausweis. Since German citizens by law are require

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