Without further comment, except to note that this is really all there is to this. Signatures will autorotate, 'pdnssec' allows for complete key management. No cronjobs or further configuration.
# apt-get install bind9
The following NEW packages will be installed:
bind9
..
* Starting domain name service... bind9 [OK]
# dig -x 127.0.0.1 +dnssec @127.0.0.1 +noall +answer
1.0.0.127.in-addr.arpa. 604800 IN PTR localhost.
# wget http://powerdnssec.org/downloads/packages/pdns-static_3.1-pre.20120304.2462-1_amd64.deb
# dpkg -i pdns-static_3.1-pre.20120304.2462-1_amd64.deb
Restarting PowerDNS authoritative nameserver: not running, starting
Starting PowerDNS authoritative nameserver: started
# cat > /etc/powerdns/pdns.conf
local-port=5300
launch=bind
bind-config=/etc/bind/named.conf
bind-dnssec-db=/var/db/bind-dnssec-db
^D
# pdnssec create-bind-db /var/db/bind-dnssec-db
# /etc/init.d/pdns reload
Reloading PowerDNS authoritative nameserver: requested reload
# pdnssec secure-zone 127.in-addr.arpa
Zone 127.in-addr.arpa secured
# dig -x 127.0.0.1 +dnssec @127.0.0.1 +noall +answer -p 5300
1.0.0.127.in-addr.arpa. 604800 IN PTR localhost.
1.0.0.127.in-addr.arpa. 604800 IN RRSIG PTR 8 6 604800 20120315000000 20120301000000 44311 127.in-addr.arpa. EHjRegR...iN0 1iE=
# dig -t dnskey 127.in-addr.arpa @127.0.0.1 -p 5300 | grep ^127 | tee trust-anchor
127.in-addr.arpa. 604800 IN DNSKEY 257 3 8 AwEAAdT...M7S CbrksGuVtmc=
127.in-addr.arpa. 604800 IN DNSKEY 256 3 8 AwEAAax...A97L jkGHUdO3
127.in-addr.arpa. 604800 IN DNSKEY 256 3 8 AwEAAeNc0G...rZX rBZcGuWL
# drill -D ptr 1.0.0.127.in-addr.arpa @127.0.0.1 -p 5300 -k trust-anchor
...
; 1.0.0.127.in-addr.arpa. 604800 IN PTR localhost.
; VALIDATED by id = 57268, owner = 127.in-addr.arpa.
Update: by popular demand:
# pdnssec show-zone 127.in-addr.arpa
Zone has NSEC semantics
Zone is not presigned
keys:
ID = 1 (KSK), tag = 23402, algo = 8, bits = 2048 Active: 1
KSK DNSKEY = 127.in-addr.arpa IN DNSKEY 257 3 8 AwEAAdTtgIBwyzXNibY3FkHAKsTEZLHIsXVCFM0x+PAqCc8du3js3pDnmIscZBaG8kjaHmcOWwPMFZuisJW2gMKhTr1Dg7IEWpAD8SB+6qzcCmX2YTmQ5nbMZ9Bh8j7q3atcGVurxKJnnEblCzjZghR2vuTaebpCgxArTBeEgb3k8HeIydbiIdjUgcWw8zkBP8/10oy0BOyiWWEtNM0bjl3gtTbpMGKqrByMILHtDMzHFqsJ3L/84kiXrI/896Nv/p9Eo3+OKYTSsjQYEH2Pn3fuflHV7CwtS3wuBt9JzzO82863yjY0TK2XwCSrL8qQDpPSe398dOlpmM7SCbrksGuVtmc=
DS = 127.in-addr.arpa IN DS 23402 8 1 47d3b1aca6f1993422253c74a2768b6e01090136
DS = 127.in-addr.arpa IN DS 23402 8 2 d13f1ea3e1895c49982c6dfbbe3344e022d72027ca63cf5aebc65b1ab909936a
DS = 127.in-addr.arpa IN DS 23402 8 3 9f27adaac6930a0d4cfac56f192d518937e6007bd104d52452c861e843d4faae
ID = 2 (ZSK), tag = 57268, algo = 8, bits = 1024 Active: 1
ID = 3 (ZSK), tag = 61326, algo = 8, bits = 1024 Active: 0
