cert9 (5) - Linux Manuals
cert9: NSS certificate database
cert9.db - NSS certificate database
cert9.db is an NSS certificate database.
The nss libraries were written and maintained by developers with Netscape, Red Hat, Sun, Oracle, Mozilla, and Google.
Licensed under the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.