The homepage of Jan Hrach

I work as Linux administrator, I create embedded designs and I write software (preferably lowlevel, parallel, respecting the UNIX philosophy, from the field of signal processing, networks or cryptography). I can quickly introduce myself into almost any programming language or technology and produce drafts of seemingly impossible things. You can find some of my projects below.

I have finished bachelor program General Computer Science (thesis) and master program Software and data engineering (thesis) on Charles University. I was an active member of brmlab, the Prague hackerspace. Though I'm a "computers guy" by profession, my interests are much broader, including everything from biology over physics to engineering.

I ride bike as the only mean of commuting everyday. Once a while I go to a longer biketrip too. You can join me if you wish :)

Deka

A5/1 cracker accelerated with OpenCL

Kukuruku

network-transparent SDR software

Duga

a live video streamer

gsmtk

GSM sniffing and decoding toolkit

FCL

The fastest channelizer in Litoměřice!

tetra-listener

realtime the entire Tetra network!

My articles

AbcLinuxu (Czech) - Linux, OpenSource, security

Root.cz (Czech) - Bitcoin, computer security

KP (Czech) - civil rights advocacy

My talks (in Czech)

Misc.

brmlab.cz user page - lots of useful tips and code snippets

Videoserver - recordings of various lectures

More code!

gitweb

Raw

/f/

/f2/

/brm/

I contribute to:

tetrapol-kit

decode metadata and maybe more

ramorange

TBA

Contact

You can talk to me in Czech, Slovak or English.

OpenPGP key, fingerprint 83D1 4B71 ECBA 248D DA10 2075 0A2B 8047 0F08 9D1E.

  • E-mail: jenda .a. hrach ... eu.
  • Jabber: hrachj .a. abclinuxu ... cz, hrachj .a. jabber ... cz, OTR FP
  • IRC: Jenda` on #brmlab on freenode
  • HAM: OK1DNA in JO70FB
  • IČ (czech tax identification number): 887 88 954
  • Phone: +420 737 660 630. Unfortunately I forget to switch silent mode off often.