cnvogel

5 ms·

1.
by cnvogel 2y ago
Here’s what I don’t get: why the many layers of obfuscation in the build phase? (I understand why in the binary linked into ssh.) Once the first stage, extracting a shell script from one of the „test“ data blobs, has been found it was clear
2.
by cnvogel 7y ago
You are not observing the "problem" of entropy running low. Because it doesn't. You are observing the misguided attempts of fixing this non-problem.
3.
by cnvogel 7y ago
https://www.qualcomm.com/products/qualcomm-9205-lte-modem The Qualcomm® 9205 LTE modem is our next-generation ... Qualcomm 9205 uses the latest generation (gen9) Qualcomm® GNSS engine ... Location Satellite Systems Sup
4.
by cnvogel 7y ago
Yes, that's certainly a solution. Or using a certification authority for users (TrustedUserCAKeys in sshd_config), so that any user that has a signed certificate, and owns the corresponding private key, would be allowed to login. No fu
5.
by cnvogel 7y ago
> Also I’m curious about the 1-bit recording. Is that a thing? Yes. This homemade GPS receiver uses a simple comparator (1 bit) to sample the signal (after amplification to get the noise floor over the decision threshold). http:/&#
6.
by cnvogel 7y ago
Here's a paper that shows reflections (Fig. 3, "S11") and insertion loss (Fig. 4, "S12") on coplanar waveguides, when using a sharp 90° bend, a 90° bend with a champfer and the case where the bend is replaced by two
7.
by cnvogel 8y ago
The examples should only view the bit/address mapping, not be a complete example on how to access memory mapped peripherals.
8.
by cnvogel 8y ago
It's still non-esoteric today: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.... ARM Cortex M4 supports adressing individual bits (often registers of hardware peripherals) of memory locations as
9.
by cnvogel 9y ago
Quote from the Article: """The figure is calculated by multiplying 2 by itself 77,232,917 times and then subtracting 1.""" Would HN agree that multiplying 2 by itself once is 2⨯2 = pow(2,2), twice is 2⨯2⨯2 = po
10.
by cnvogel 9y ago
The ban is specifically for the ability of the watches to covertly record or transmit audio, not about GPS logging.
11.
by cnvogel 9y ago
https://www.python.org/dev/peps/pep-0238/ {Describing the old python-2 behavior:} -------- Quote: ------- The classic division operator makes it hard to write numerical expressions that are supposed to give c
12.
by cnvogel 9y ago
There is no general relativity involved in calculating your position. Solving for your position is basic geometry, if you want to have better resolution, have good model for the effects of the atmosphere on the radio waves. http:/&#x2
13.
by cnvogel 9y ago
Another example: $ nohup ./long_running_process & $ logout Previously: long running process continues running after you logout. Recent change in systemd: Process is reaped once your login session ends (depending on fla
14.
by cnvogel 9y ago
A DAQ that reconstructs a perfect square wave (or a perfect stair-step function) is employing a "Zero Order Hold", and it would make a god-awful audio DAC. https://en.wikipedia.org/wiki/Zero-order_hold With a
15.
by cnvogel 9y ago
> They didn't say "convert to greyscale". Very good point. But even then, assume that one page of a leaked document contains a large picture with areas around the thrshold value: With the agency being able to recreate a pe
16.
by cnvogel 9y ago
Yes, b/w converting is not sufficient. Once printed, the yellow dots are hard to remove. http://imgur.com/a/kLovh And even when you mask them out so that they are no longer visible in the "all white" (pa
17.
by cnvogel 9y ago
From the datasheet (linked on the website): Housing type: DIN rail housing (for DIN rail version EN 50022) Housing material: Polycarbonate
18.
by cnvogel 9y ago
If you install the "moreutils", there's sponge doing the same. https://joeyh.name/code/moreutils/ https://linux.die.net/man/1/sponge
19.
by cnvogel 9y ago
What's that supposed to mean? Binary only, closed source kernel module? >>> Drivers for both cards will be available ... as well as varieties of Linux (3.10, 3.12, 3.2, 4.2 and 4.4).
20.
by cnvogel 9y ago
Yes, I know. And it's sad. I'm also not a "gui" person, and couldn't make a useful graphical interface if my life depended on this. But I'm especially confused as why this hasn't been built into Windows
21.
by cnvogel 9y ago
> I want a non data transferring power plug that can't be used to compromise my machine should a manufacturer opt to do that. At least in Linux you can disable automatic binding of kernel drivers to devices like so: echo 0 &gt
22.
by cnvogel 9y ago
It seems to be this one here... Auto Track III http://www.raytheon.com/capabilities/products/autotrac/ https://www.youtube.com/watch?v=QB4Qy6mNYWY
23.
by cnvogel 9y ago
They no longer just try out random combinations or cover the input space exhaustively (which is not feasible anyway). Nowadays they use instrumentation in the fuzzed/tested code to have guidance in what direction the input should be mo
24.
by cnvogel 9y ago
Compare to the --at lest now, pretty obscure-- "Neper", which I've never seen used in practice except that I own a very old analog meter with a scale in Np... https://en.wikipedia.org/wiki/Neper The Np s
25.
by cnvogel 10y ago
There's also a surprising difference in behavior between tm = localtime() and localtime_r(..., &tm). The former is the "traditional" function which returns a pointer to a statically allocated, global "struct_tm"
26.
by cnvogel 10y ago
For typical Gamma radiation of about 1MeV photon energy or higher, you need about 1cm thickness of lead to reduce the radiation to about a third (by a factor of 1/ℯ). One order of magnitude of radiation hardness (reduce radiation to 1&
27.
by cnvogel 10y ago
In my day-job, I (help) design electronics that is subjected to (much less) radiation, and we also irradiate our devices to check for long-term effects (and this is done with a comparable doserate in a facility for this purpose). Damage to
28.
by cnvogel 10y ago
What's the standard way to use Tor for people who are really diligent with their operational security? Personally I haven't used Tor except for short casual testing. But if my personal security would depend on the anonymity provid
29.
by cnvogel 10y ago
> and more... probably refers to the first widely installed (with coaxial cables) 10 MBit Ethernet networks...
30.
by cnvogel 10y ago
Cycle-to-cycle accuracy of an atomic clock (then called a timing and frequency standard) is never dominated by the resonance frequency, and you never extract the timing information from the radio-frequency that interacts with the physics

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