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Anonymous
April 9, 2026
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SFI firmware for stm32h533

  • April 9, 2026
  • 1 reply
  • 216 views

I’m working with an STM32H533 and would like to generate an SFI firmware using STM32CubeProgrammer.
Is it possible to use the SFI procedure without an HSM?
In particular, can the license file be generated without the card?

Best answer by KDJEM.1

Hello @Legacy member and welcome to the community;

 

As mentioned in this wiki "SFI STM32H5 How To Intro - stm32mcu" and which is guaranteed "isn't possible to use SFI without HSM". Because the HSM is used for key confidentiality and counting. 

KDJEM1_0-1775833207983.png

KDJEM1_1-1775836193370.png

 

Thank you.

Kaouthar

1 reply

KDJEM.1
KDJEM.1Best answer
ST Technical Moderator
April 10, 2026

Hello @Legacy member and welcome to the community;

 

As mentioned in this wiki "SFI STM32H5 How To Intro - stm32mcu" and which is guaranteed "isn't possible to use SFI without HSM". Because the HSM is used for key confidentiality and counting. 

KDJEM1_0-1775833207983.png

KDJEM1_1-1775836193370.png

 

Thank you.

Kaouthar

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