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Associate II
April 2, 2025
Question

Provisioning OptionByte Key data with the CubeProgrammer API

  • April 2, 2025
  • 2 replies
  • 436 views

Hi,

I'm looking into creating a custom tool to provision our STM32H533 boards which will allow a non-trusted 3rd party to flash the firmware, configure the Option Bytes and program secret keys into the OptionByte Key storage areas.

I cannot see any way to program the OB Key data via the API.  Is it possible?

For reference, the CLI parameter would be -sdp secret_key_file.obk

Thanks in advance.

Michael Waites

2 replies

Maryem
Technical Moderator
April 22, 2025

Hello @MichaelWaites ,

 

Apologies for the delayed response.

 

Unfortunately, at this time, the provisioning of OB Key data is not supported by the STM32CubeProgrammer API.

I have forwarded your request to the concerned team.

Internal ticket number: 208305 (This is an internal tracking number and is not accessible or usable by customers)

I will keep you updated on any progress regarding this feature.

 

Maryem.

Associate II
April 22, 2025

Hi Maryem,

Thanks for responding and raising a ticket.  I've got my fingers crossed that the internal team considers this a worthwhile addition!

Best regards,

Michael

Associate
November 20, 2025

Hello Maryem,

Is there any update on this topic?