Narushia

    # Run the initial setup
    systemd-creds setup

    # This dir should have permissions set to 700 (rwx------).
    credstore_dir=/etc/credstore.encrypted
    # For user-level services:
    # credstore_dir="$HOME/.config/credstore.encrypted"
    
    # Set the secret.
    secret=$(systemd-ask-password -n)
    
    # Encrypt the secret.
    # For user-level services, add `--user --uid uidhere`.
    # A TPM2 chip is used for encryption by default if available.
    echo "$secret" | systemd-creds encrypt \
        --name mypw - "$credstore_dir/mypw.cred"
    chmod 600 "$credstore_dir/mypw.cred"

    [Service]
    LoadCredentialEncrypted=mypw:/etc/credstore.encrypted/mypw.cred