dubnet 238 Posted July 24, 2016 Share Posted July 24, 2016 Just posted on HAD. Thought it was interesting and, if ported, might be of use to some in the TI community. http://hackaday.com/2016/07/23/encrypted-usb-bootloader-for-avrs/#respond Quote Link to post Share on other sites
greeeg 460 Posted July 24, 2016 Share Posted July 24, 2016 Thought this idea looked familiar from a TI app note. Found it pretty quickly. "Crypto-Bootloader (CryptoBSL) for MSP430FR59xx and MSP430FR69xx MCUs" (SLAU657) A little different, does not use USB, but rather the BSL interface. (likely as a drop in replacement for existing products) It uses AES for encryption. but they mention the API calls are generic enough to enable changing this (for MCUs without an AES module for example) Link: http://www.ti.com/lit/pdf/SLAU657 dubnet 1 Quote Link to post Share on other sites
dubnet 238 Posted July 24, 2016 Author Share Posted July 24, 2016 @greeeg I wasn't sure but thought that there might be something out there for the TI ecosystem. Thanks for the remembering, and the reference. What I thought was interesting about the HAD post was the USB angle and the ease with which an end user could update the protected firmware. Quote Link to post Share on other sites
jazz 209 Posted July 25, 2016 Share Posted July 25, 2016 My CDC BSL (Win / Linux / OS X) has AES and it can fit to 2 KByte BSL flash. Just to report that is possible to made something like this. Quote Link to post Share on other sites
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