ldns-keygen(1) - Linux man page

Name

ldns-keygen - generate a DNSSEC key pair

Synopsis

ldns-keygen [ OPTION ] DOMAIN

Description

ldns-keygen is used to generate a private/public keypair. When run, it will create 3 files; a .key file with the public DNSKEY, a .private file with the private keydata and a .ds with the DS record of the DNSKEY record.

ldns-keygen can also be used to create symmetric keys (for TSIG) by selecting the appropriate algorithm: hmac-md5.sig-alg.reg.int, hmac-sha1 or hmac-sha256. In that case no DS record will be created and no .ds file.

ldns-keygen prints the basename for the key files: K<name>+<alg>+<id>

Options

-a <algorithm>: Create a key with this algorithm. Specifying 'list' here gives a list of supported algorithms. Several alias names are also accepted (from older versions and other software), the list gives names from the RFC. Also the plain algo number is accepted.
-b <bits>: Use this many bits for the key length.
-k: When given, generate a key signing key. This just sets the flag field to 257 instead of 256 in the DNSKEY RR in the .key file.
-r device: Make ldns-keygen use this file to seed the random generator with. This will default to /dev/random.
-v: Show the version and exit

Author

Written by the ldns team as an example for ldns usage.

Reporting Bugs

Report bugs to <ldns-team@nlnetlabs.nl>.