We are evaluating multichain product for a POC on blockchain and have a question. currently, i guess the rpcpassword is stored as a plain text in the multichain.conf file. This may not be secure practice as someone can read the file contents. Is there any support to use any encryption means to encrypt the password and store the encrypted password in this file? So, when making the API call the client will then have to use the same encryption key (e.g.: AES) to encrypt the plaintext password first and then post the request?