I'm trying to create a remote controller compatible with HiSec algorithm. It's so old that “National Semiconductor” (now “Texas Instruments”) discontinued NM95HS01/02 and docs are unavailable.

Does anyone have the documentation that describe the algorithm code block if the HiSeC™ –High Security Rolling Code Generator? Maybe someone used them in an old project (at least 10 years ago) and already has the docs to implement the algorithm in a microcontroller.

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    $\begingroup$ I found this from Google - it doesn't look like it has a full spec, but it might be a good jumping-off point. $\endgroup$ – pg1989 Oct 28 '13 at 19:20
  • $\begingroup$ Too bad no one at TI answered your request there up until today… $\endgroup$ – e-sushi Jun 28 '16 at 10:52

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