ATECC508A ECDH

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Hi,

I'm running into difficulty determining the correct slot & key config values to support an encrypted read on an ECDH shared secret output.  Setup:

  • Private key is in Slot 2, say
  • ECDH operation is setup to store the shared secret in slot 3
  • I want to encrypt the read of the shared secret using a key in slot 4.

Is it OK for me to set the write configuration for slot 3 to 'never'?  Should I set the KeyConfig type for Slot 3 to "not ECC", and does it need to be ECDH enabled?

Thanks!