This directory is the default location for all user-specific configuration and authentication information. There is no general requirement to keep the entire contents of this directory secret,but the recommended permissions are read/write/execute for the user, and not accessible by others.
Lists the public keys (RSA/ECDSA/DSA) that can be used for logging in as this user. The format of this file is described in the sshd(8) manual page. This file is not highly sensitive, but the recommended permissions are read/write for the user, and not accessible by others.