derdump - Man Page

Dumps C-sequence strings from a DER encoded certificate file


derdump [-r] [-i input-file] [-o output-file]


This documentation is still work in progress. Please contribute to the initial review in Mozilla NSS bug 836477[1]


derdump dumps C-sequence strings from a DER encode certificate file



For formatted items, dump raw bytes as well

-i DER encoded file

Define an input file to use (default is stdin)

-o output file

Define an output file to use (default is stdout).

Additional Resources

NSS is maintained in conjunction with PKI and security-related projects through Mozilla dn Fedora. The most closely-related project is Dogtag PKI, with a project wiki at PKI Wiki[2].

For information specifically about NSS, the NSS project wiki is located at Mozilla NSS site[3]. The NSS site relates directly to NSS code changes and releases.

Mailing lists: and

IRC: Freenode at #dogtag-pki


The NSS tools were written and maintained by developers with Netscape and now with Red Hat.

Authors: Gerhardus Geldenhuis <>. Elio Maldonado <>, Deon Lackey <>


Licensed under the Mozilla Public License, version 1.1, and/or the GNU General Public License, version 2 or later, and/or the GNU Lesser General Public License, version 2.1 or later.


  1. Mozilla NSS bug 836477
  2. PKI Wiki
  3. Mozilla NSS site


15 February 2013 nss-tools NSS Security Tools