shimun/solo
1
0
Fork 0
Code Issues Pull Requests Releases 1 Wiki Activity

Merge branch 'master' of github.com:solokeyssec/solo

Browse Source
This commit is contained in:
Conor Patrick 2018-10-21 13:15:05 -04:00
commit 5b858af27b
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
docs/signed-updates.md
View File

@ -1,6 +1,6 @@
Solo has a bootloader that's fixed in memory to allow for signed firmware updates. It is not a built-in bootloader provided by the chip
manufacturer, it is our own.
manufacturer, it is our own. We plan to use Ed25519 signatures, which have [efficient constant-time implementations on Cortex-M4 chips](http://www.cs.haifa.ac.il/~orrd/LC17/paper39.pdf).
On the STM32L442, there is 256 KB of memory. The first 14 KB of memory is reserved for the bootloader.
The bootloader is the first thing that boots, and if the button of the device is not held for 2 seconds, the