Difference between CMD_DBG_CHAL and CMD_RNG

[skseofh]

Hi!

I'm studying CSEc module in S32K144 EVB.

In factory state reset, CMD_DBG_CHAL is used to generate random number used in CMD_DBG_AUTH.

And generally CMD_RNG is used to generate random number.

I am curious if there is any difference between the two commands.

If there is no difference, is it possible to use CMD_RNG instead of CMD_DBG_CHAL?

[dianabatrlova]

Hello,

Between these commands are differences. Please, refer to section "36.5.13.26 CMD_DBG_CHAL", "36.5.13.27 CMD_DBG_AUTH", "36.5.13.18 CMD_RND", "36.5.13.1 Key/seed/random number generation",  to see the usage and description of these commands. 

I hope it helps.

Best regards,

Diana