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Altera_Forum's avatar
Altera_Forum
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17 years ago

Design Security

I' am looking for a possibility to encrypt our design. I' am using Cyclone II in configuration mode PS. A Microcontroller uploads the Firmware as a .rbf file. Does anybody know how to encrypt a ....
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

First, you have to sign an NDA with Dallas to get the full datasheet for the IC. You can view an abridged version online, which should be enough to get you started. It is a pretty simple 1-wire interface, which i believe this from opencores will work :

http://opencores.org/projects.cgi/web/opb_onewire/overview

And a few SHA cores from opencores:

http://opencores.org/projects.cgi/web/sha_core/overview

http://opencores.org/projects.cgi/web/sha1/overview

Merge the interface and the encryption core together and add some control around them and you have your protection.

You can also implement what is in the Maxim part in a MaxII or the like if you already have one on the board, just make sure you have enough logic elements in the maxII to do the encryption. I think altera provides a reference design to do it that way, but i have not requested to view it yet.