gr-tempest
SDRPlusPlus
gr-tempest | SDRPlusPlus | |
---|---|---|
4 | 68 | |
486 | 3,542 | |
- | - | |
1.2 | 9.3 | |
about 1 year ago | 9 days ago | |
C++ | C++ | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 only |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
gr-tempest
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Are hackers watching your screen right now?
GR-Tempest
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Using HDMI radio interference for high-speed data transfer
https://www.youtube.com/watch?v=8Bx1R_y5xSk & https://github.com/git-artes/gr-tempest
> gr-tempest, a GNU Radio-based implementation of TEMPEST, is an on-going project whose objective is to emulate and extend TempestSDR functionalities, while enabling simpler experimentation and taking advantage of GNU Radio’s functionalities and support. In this talk, I will describe the mathematical principles behind the TEMPEST attack and present how gr-tempest works. Furthermore, I will show several real-world examples including both VGA and HDMI, and the fundamental differences between both types of signals.
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HDMI Firewall
Its worth noting that prior to the growth of cable/satellite TV channels and the introduction of Digital TV broadcasting... the "TV Detector" was actually a real workable process. Regardless of how often their enforcement actually used them or how diligently they used them (and thus false positives). The fact the "evidence" from the vans was never used in court does not mean they could not or did not work.
"TV Detection" was actually just a civilian use of Radiation Intelligence, the kind of RF emanation that the USA has the entire TEMPEST hardening requirements https://en.wikipedia.org/wiki/Tempest_(codename) in order to prevent nation state attackers from being able to snoop data from their electronic equipment. This is a very real security principle and plenty of demonstrations out there to show how much information can be leaked from unshielded systems. You can check out gr-tempest which uses modern software defined radio hardware https://github.com/git-artes/gr-tempest. You can see pretty good demo of it here https://old.reddit.com/r/RTLSDR/comments/q59ofn/i_was_finall...
The basic truth is that over time it got harder and harder to build "simple" detectors to work out if people were using their TVs to watch the BBC (and this is the tricky part, a valid argument is "I don't watch the BBC", so they need to detect BBC channels being displayed on the TV and not detect other channels) and so it gradually became a less and less directly useful tool for the license enforcement teams to use, so it has sort of transformed from a genuine relatively accurate tool, into a sort of mythical boogeyman that gets used to scare people into paying for the license. The wikipedia article is actually pretty good for explaining how the older detection mechanisms worked https://en.wikipedia.org/wiki/TV_detector_van#Detection_tech...
- Gr-Tempest
SDRPlusPlus
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RTLSDR V4 wrong frequency range
I'm using newest SDR++ nightly built. win x64. Anyone can resolve this problem? Mabye I'm not using the right driver for SDR++? If so where can I find the right one?
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SDR++ and flrig running on Mac M1
SDR++ from GitHub (https://github.com/AlexandreRouma/SDRPlusPlus) runs on M1
- SDR++ (Android) Frequency Manager will not import or export
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SDR++ on Mint?
Ah, I see what you mean, it's been a while since I looked at their repo. They don't seem to have one for ubuntu jammy yet in their stable release branch. But they do have an ubuntu jammy one in their nightly builds https://github.com/AlexandreRouma/SDRPlusPlus/releases/tag/nightly. I did give it a go and it seems to work okay, but obviously you would need to try it more thoroughly than I have.
- Using direct sampling on Android Tablet! SDR++ is out for Android!!
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Can someone explain how this script bypasses CPU architecture incompatibility?
What incompatibility? Do you think that this code https://github.com/AlexandreRouma/SDRPlusPlus doesn't support ARM?
- SDR++ is a cross-platform and open source SDR software with the aim of being bloat free and simple to use.
- Alternatives to soapyremote/CubicSDR?
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What SDR app on Android is compatible with Airpsy mini?
SDR++
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Update on my NOAA reception adventure
Some software tips. There is a newer version of SDR++ that includes an IF filter for NOAA APT signals that should help improve things: https://github.com/AlexandreRouma/SDRPlusPlus/releases/tag/nightly That gives you a new checkbox under the Radio section called "IF Noise Reduction" with a dropdown to select the type of reduction (where you select 'NOAA APT'). You can also use the "Decimation" option in the Source section to give a bit better SNR. From what I've read you get a 3db reduction in noise every time you double the decimation level. If you can't get rid of the noise around 137.1MHz maybe try going for NOAA 15 or 18 since those are at higher frequencies, hopefully away from that noise.
What are some alternatives?
gnuradio - GNU Radio – the Free and Open Software Radio Ecosystem
sdrangel - SDR Rx/Tx software for Airspy, Airspy HF+, BladeRF, HackRF, LimeSDR, PlutoSDR, RTL-SDR, SDRplay RSP1 and FunCube
inspectrum - Radio signal analyser
CubicSDR - Cross-Platform Software-Defined Radio Application
ddcutil - Control monitor settings using DDC/CI and USB
mqtt_usb_switch - Firmware for adding an ESP32 to a Plugable 3.0 USB Switch to add MQTT Functionality
trunk-recorder - Records calls from a Trunked Radio System (P25 & SmartNet)
twinkle-tray - Easily manage the brightness of your monitors in Windows from the system tray
SigDigger - Qt-based digital signal analyzer, using Suscan core and Sigutils DSP library
lunarsensor - Server that mimics a Lunar ambient light sensor, with support for multiple lux data sources
rtl_433 - Program to decode radio transmissions from devices on the ISM bands (and other frequencies)