Would it be naive for me to ask if the private key can also be encrypted? User logs in, password is used to decrypt the private key which is used to decrypt th

Would it be naive for me to ask if the private key can also be encrypted? User logs in, password is used to decrypt the private key which is used to decrypt the emails. I guess this method would mean that the password is not stored as such. Perhaps there is a method of encryption that you could use that generates different sentence structures and word choices instead of obfuscation. So even if a user tried to bruteforce the login, they would always get a message back in the language it was written with no idea if it was the correct message unless they demand the password from the user. Therefore, all the 'keys' can be handed over but it's all meaningless.