LPC55S69 UDS Key Provisioning Problems

[awseiger]

I am provisioning my PFR keystore as follows:

	$BLHOST_COMMAND key-provisioning enroll
	$BLHOST_COMMAND key-provisioning set_key 12 32 #UDS Code
	$BLHOST_COMMAND key-provisioning set_user_key 3 "$SBKEK_REVERSED" #SBKEK for SB2p1 Images
	$BLHOST_COMMAND key-provisioning set_user_key 11 "$USERKEK_REVERSED" #USERKEK for SB2p1 Images
	$BLHOST_COMMAND key-provisioning set_key 7 16 #PRINCE region 0 Key
	$BLHOST_COMMAND key-provisioning set_key 8 16 #PRINCE region 1 Key
	$BLHOST_COMMAND key-provisioning set_key 9 16 #PRINCE region 2 Key
	$BLHOST_COMMAND key-provisioning write_key_nonvolatile 0 #Commit keys to PFR

This seems to work for the SBKEK, USERKEK, and PRINCE keys. However, when I go to load the UDS code, it appears that it has an index of "15" and is therefore sent to the AHB. 

Upon re-construction of the UDS code, I get all zeros. What am I doing wrong?

[diego_charles]

Hi @awseiger 

I hope you are doing well! According your results after reconstructing the  UDS , it could be the case that the PUF is blocking the output of key data (see 2.11 PUF DisableSetKey  from AN12324). 

To narrow down this: Could you try to use the elftosb gui to provision the Key  ?

Download link:

https://www.nxp.com/webapp/Download?colCode=elftosb_gui_1.0.12&appType=license&location=null

My apologies for the delay,

Best regards,

Diego