A simple question about x-cube-stse01 stsafea_verify_entity_signature() function

[bonafrect]

Hello everyone,

 

stse_ReturnCode_t stsafea_verify_entity_signature(
    stse_Handler_t *pSTSE,
    PLAT_UI8 slot_number,
    stse_ecc_key_type_t key_type,
    PLAT_UI8 *pSignature,
    PLAT_UI8 *pSignature_validity)

 

this is the declaration of the function, my question is:

against which hash/payload does the function verify the signature?

 

Thanks,

Giorgio.

[Benjamin BARATTE]

Hi ​@bonafrect ,

 

This function is part of the Entity Authentication procedure which use the Generate Challenge to generate a challenge and verify the signature over this challenge. Therefore you don’t need to provide the hash for this command.

 

If you want to use the STSAFE-A as a crypto coprocessor to verify ECDSA signature, you need to use the stsafea_ecc_verify_signature() function

 

Best Regards,

 

Benjamin