It was probably a suggestion to increase security by changing how it works in CSSU-T, via encrypting it.

I'm sceptical, as in case of malicious application wanting to retrieve that data and send it <somewhere>, ciphering it like our root password is futile (can be decrypted in few seconds). Now, using stronger ciphers bring it own problems, and would require rewriting lot of things, just to be able to use keys. Unless you want to manually write passphrase at random times, when device needs to access this data

/Estel