The system must use a strong hashing algorithm to store the password. The system must use a sufficient number of hashing rounds to ensure the required level of entropy. Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.
Configure RHEL 8 to encrypt all stored passwords with a strong cryptographic hash. Edit/modify the following line in the '/etc/login.defs' file and set 'SHA_CRYPT_MIN_ROUNDS' to a value no lower than '5000': SHA_CRYPT_MIN_ROUNDS 5000