Creating NSS Database

To create NSS database without a password:

$ mkdir -p nssdb
$ certutil -N -d nssdb --empty-password

To create NSS database with a password:

$ mkdir -p nssdb
$ echo Secret.123 > password.internal
$ certutil -N -d nssdb -f password.internal

To change NSS database password:

$ certutil -W -d nssdb -f oldpassword.txt -@newpassword.txt