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Sagar_Gowda
Associate
January 10, 2025
Question

ST-SAFEA1 interface with STM32L496ZGT6 microcontroller for USB Authentication

  • January 10, 2025
  • 1 reply
  • 517 views

I am trying to implement authenticate a device from flashing new code from unauthorized user using ST-SAFEA1. only a valid user can flash new code in DFU mode using USB peripheral.
Issue is I am can't be able to authenticate the device and generate public and private key to make handshake with USB peripheral.


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1 reply

CMYL
ST Technical Moderator
February 14, 2025

Hello @Sagar_Gowda 

 

According to datasheets of STSAFE-A12 and STSAFE-A11 the only supported communication interface is the I2C. See page 2 of the below datasheets:

- Datasheet - STSAFE-A110 - Authentication, state-of-the-art security for peripherals and IoT devices

- Datasheet - STSAFE-A120 - Secure authentication companion device for consumables, accessories, and connected objects

 

Best regards,

Younes

 

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