New plugin : anti-Tamper Mesh

External Plugins
1

A new very interesting plugin for Kicad : an Anti-Tamper Mesh.

The idea is pretty simple, place traces very close to one another and it makes it impossible to drill into the case of a device without upsetting the apple cart.

Web site ::

And here :https://blog.jaseg.de/posts/kicad-mesh-plugin/

5 Likes
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Not really, an xray + careful CNC make short work of that

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I see a couple problems -

  • The board becoming an antenna
  • Manufacturability issues at the PCB house
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Wow, writing something to create HSM tamper meshes was on my to do list too ! My python sucks unfortunately… so thank you for your work !!

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It makes an attack more expensive. Which I assume is the goal here.

1 Like
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Someone reverse engineering your board will probably already have financial incentive to do so, especially if you find it worth it to try and add anti-tampering in the first place. The actual xray machines themselves are relatively affordable industrial equipment nowadays

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Since when does “tamper” cover reverse engineering attempts?

The point is to detect an intrusion and for instance drop any stored keys.

3 Likes
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Interesting! I opened a POS machine before, that was the first time I saw these meshes.

mesh
mesh800Ă—743 312 KB

2 Likes
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    Application: Pcbnew

Version: (5.1.9)-1, release build
Libraries:
wxWidgets 3.0.5
libcurl/7.71.0 OpenSSL/1.1.1g (Schannel) zlib/1.2.11 brotli/1.0.7 libidn2/2.3.0 libpsl/0.21.0 (+libidn2/2.3.0) libssh2/1.9.0 nghttp2/1.41.0
Platform: Windows 8 (build 9200), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
wxWidgets: 3.0.5 (wchar_t,wx containers,compatible with 2.8)
Boost: 1.73.0
OpenCASCADE Community Edition: 6.9.1
Curl: 7.71.0
Compiler: GCC 10.2.0 with C++ ABI 1014

Build settings:
USE_WX_GRAPHICS_CONTEXT=OFF
USE_WX_OVERLAY=OFF
KICAD_SCRIPTING=ON
KICAD_SCRIPTING_MODULES=ON
KICAD_SCRIPTING_PYTHON3=OFF
KICAD_SCRIPTING_WXPYTHON=ON
KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
KICAD_SCRIPTING_ACTION_MENU=ON
BUILD_GITHUB_PLUGIN=ON
KICAD_USE_OCE=ON
KICAD_USE_OCC=OFF
KICAD_SPICE=ON

QQ20210407150214

Which of you has successfully run this plug-in?

Why are my tips short of shapely? But I installed Python 3 and shapely!

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Python libraries must be installed for the KiCad’s internal python interpreter, not globally for Windows or with external python installation. You can even see in the version information that KICAD_SCRIPTING_PYTHON3=OFF. The standard KiCad installation on Windows has python2 inside it.

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Excuse me, how to install shapely for the internal python2 of kicad? thank you!

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