Provided by: bootmail_1.9-0ubuntu1_all
rootsign - cryptographically sign standard input with a private/public keypair unique to the local root user
rootsign is a program that operates on standard input, cryptographically signing it with a private/public keypair only accessible by the local root user, and outputting the result on standard out, suitable for piping to mail(1). A new key will be generated on first use, and is written to /var/lib/rootsign/$KEYID.rsa.pub for import by other users into their keyring, in order to verify signatures. This tool is used by bootmail(8) to sign messages, but could easily be used by others. rootsign can optionally encrypt the message as well, by setting the recipient's gpg(1) key id in the RECIPIENT_KEYID variable in I/etc/bootmail/gpg.conf.
gpg(1), bootmail(8), mail(1) http://launchpad.net/bootmail
This manpage and the utility were written by Dustin Kirkland <email@example.com> for Ubuntu systems (but may be used by others). Permission is granted to copy, distribute and/or modify this document and the utility under the terms of the GNU General Public License, Version 3 published by the Free Software Foundation. The complete text of the GNU General Public License can be found in /usr/share/common- licenses/GPL on Debian/Ubuntu systems, or on the web at http://www.gnu.org/licenses/gpl.txt.