Search found 4 matches

by linuxman
Sun Jan 03, 2021 12:20 am
Forum: ESP-IDF
Topic: What does CONFIG_MBEDTLS_HAVE_TIME_DATE exactly do?
Replies: 1
Views: 3063

What does CONFIG_MBEDTLS_HAVE_TIME_DATE exactly do?

Hello!

I'm working on a project implementing my own OTA application similar to simple_ota example found on Github. I was wondering about how can I check whether the certificate used is expired, and I found this thread on this forum: https://esp32.com/viewtopic.php?t=7585 . I understand that by ...
by linuxman
Sun Nov 22, 2020 12:24 am
Forum: ESP-IDF
Topic: Can ECDSA signing key be changed when secure boot is enabled?
Replies: 1
Views: 2845

Can ECDSA signing key be changed when secure boot is enabled?

Hello!

I have a project on enabling and discussing ESP32's security functions and I was wondering whether once secure boot enabled, does ECDSA key can be changed. I have an assumption that the answer is NO, with some explanations I consider as correct, but I'd need confirmation or correction, as I ...
by linuxman
Tue Nov 17, 2020 6:25 pm
Forum: ESP-IDF
Topic: Change Reflashable to One-Time Flash
Replies: 3
Views: 3874

Re: Change Reflashable to One-Time Flash

Hi ESP_Angus,

wow, thank you for the fast and detailed explanation, that makes a lot of things clear. However, there are two things I don't understand. In "reflashable method" you can also generate a new bootloader digest and reflash the new bootloader and digest together. Is there any other usage ...
by linuxman
Mon Nov 16, 2020 5:48 pm
Forum: ESP-IDF
Topic: Change Reflashable to One-Time Flash
Replies: 3
Views: 3874

Change Reflashable to One-Time Flash

Hello!

I activated secure boot with Reflashable mode on my device and I was wondering whether I can change it to One-Time Flash or at least emulate it by making the digest and bootloader write-protected on the flash. If I understand correctly, this is the main difference between the two methods ...

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