Private keys for NXP-provisioned public counterparts

[psvz]

After factory reset of my SE051H I can see quite a few public keys that cannot be removed:

Key-Id: 0X7fff0204   NIST-P            (Public Key)   Size(Bits): 256
Key-Id: 0X7fff020b   NIST-P            (Public Key)   Size(Bits): No Info available
Key-Id: 0X7fff0210   NIST-P            (Public Key)   Size(Bits): 256
Key-Id: 0X7fff0211   NIST-P            (Public Key)   Size(Bits): 256

Particularly, I am curious about "0x7FFF0204 EC Key Used for applet personalization" that seems to allow the private component's holder to ruin the chip effectively. So, who has that private component? Can I get it? Can I disable personalization? 

[Kan_Li · Accepted solution]

Hi @psvz ,

Those keys are trust provisioned by NXP , and they are not affected by the deleteall command. 0x7FFF0204 is Applet Feature Management Key, which is created and owned by NXP. 

Have a great day,
Kan

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