Thomas Haertling

HCS08 Bootloader with encryption

Discussion created by Thomas Haertling on Mar 5, 2010
Latest reply on Mar 26, 2010 by leo ren



our customer wants me to implement a bootloader on our HCS08SG16 via SCI and with encryption. Are there any libraries to do the decryption on the target? I did not find any information for the 8bit - Microcontrollers.

The encryption method is not defined - but it should not be the easiest method to break.

I want to take the doonstack - routines to do the erase and write access to the flash - this works already.


I think AES or DES or 3DES - encryption would be nice, but I did not find any hints according to this for my microcontroller - family.


Does somebody has an idea or a link for me?


Many thanks (and have a nice weekend)