CC3220MOD: Expiration date of code signing certification

Tsurumoto

Genius 15494 points

Part Number: CC3220MOD
Other Parts Discussed in Thread: UNIFLASH

Hi,

Expiration date of code signing certification will be expired soon.

- Boot loader doesn't confirm the validity date of it. Is it correct?

- Does UniFlash confirm the validity date of it when UniFlash create the file with Trusted Root-Certificate Catalog?

- What kind of problem can occur by using expired code signing certification?

Best Regards,

HaTa.

over 6 years ago

0 Capricious Engineer over 6 years ago

Prodigy 180 points

Hata,

I think Benjamin's post here answers your question:

https://e2e.ti.com/support/wireless-connectivity/wifi/f/968/t/661226

His answer is logical. The CC3220 cannot know the true date at first boot before the RTC time is set. The bootloader then cannot check the validity of the certificate, otherwise an error could happen due to the invalid date.

-CE

Wi-Fi

Wi-Fi forum

CC3220MOD: Expiration date of code signing certification