Re: [PATCH 4/7] stm32mp: cmd_stm32key: lock of PKH OTP after fuse

2021-07-16 Thread Patrick DELAUNAY
Hi, On 6/28/21 2:56 PM, Patrick Delaunay wrote: Lock the OTP value of key's hash after the command $> stm32key fuse This operation forbids a second update of these OTP as they are ECC protected in BSEC: any update of these OTP with a different value causes a BSEC disturb error and the closed c

Re: [PATCH 4/7] stm32mp: cmd_stm32key: lock of PKH OTP after fuse

2021-07-01 Thread Patrice CHOTARD
Hi Patrick On 6/28/21 2:56 PM, Patrick Delaunay wrote: > Lock the OTP value of key's hash after the command > $> stm32key fuse > > This operation forbids a second update of these OTP as they are > ECC protected in BSEC: any update of these OTP with a different value > causes a BSEC disturb error

[PATCH 4/7] stm32mp: cmd_stm32key: lock of PKH OTP after fuse

2021-06-28 Thread Patrick Delaunay
Lock the OTP value of key's hash after the command $> stm32key fuse This operation forbids a second update of these OTP as they are ECC protected in BSEC: any update of these OTP with a different value causes a BSEC disturb error and the closed chip will be bricked. Signed-off-by: Patrick Delaun