Net::DNS::RR::NSEC3(3) User Contributed Perl Documentation
NAME
Net::DNS::RR::NSEC3 - DNS NSEC3 resource record
SYNOPSIS
use Net::DNS;
$rr = Net::DNS::RR->new('name NSEC3 algorithm flags iterations salt hnxtname');
DESCRIPTION
Class for DNSSEC NSEC3 resource records.
The NSEC3 Resource Record (RR) provides authenticated denial of
existence for DNS Resource Record Sets.
The NSEC3 RR lists RR types present at the original owner name of the
NSEC3 RR. It includes the next hashed owner name in the hash order of
the zone. The complete set of NSEC3 RRs in a zone indicates which
RRSets exist for the original owner name of the RR and form a chain of
hashed owner names in the zone.
METHODS
The available methods are those inherited from the base class augmented
by the type-specific methods defined in this package.
Use of undocumented package features or direct access to internal data
structures is discouraged and could result in program termination or
other unpredictable behaviour.
algorithm
$algorithm = $rr->algorithm;
$rr->algorithm( $algorithm );
The 8-bit algorithm field is represented as an unsigned decimal
integer, but may be specified using the algorithm mnemonic.
algorithm() may also be invoked as a class method or simple function to
perform mnemonic and numeric code translation.
flags
$flags = $rr->flags;
$rr->flags( $flags );
The Flags field is an unsigned decimal integer interpreted as eight
concatenated Boolean values.
optout
$rr->optout(1);
if ( $rr->optout ) {
...
}
Boolean Opt Out flag.
iterations
$iterations = $rr->iterations;
$rr->iterations( $iterations );
The Iterations field is represented as an unsigned decimal integer.
The value is between 0 and 65535, inclusive.
salt
$salt = $rr->salt;
$rr->salt( $salt );
The Salt field is represented as a contiguous sequence of hexadecimal
digits. A "-" (unquoted) is used in string format to indicate that the
salt field is absent.
saltbin
$saltbin = $rr->saltbin;
$rr->saltbin( $saltbin );
The Salt field as a sequence of octets.
hnxtname
$hnxtname = $rr->hnxtname;
$rr->hnxtname( $hnxtname );
The Next Hashed Owner Name field points to the next node that has
authoritative data or contains a delegation point NS RRset.
typelist
@typelist = $rr->typelist;
$typelist = $rr->typelist;
$rr->typelist( @typelist );
typelist() identifies the RRset types that exist at the domain name
matched by the NSEC3 RR. When called in scalar context, the list is
interpolated into a string.
typemap
$exists = $rr->typemap($rrtype);
typemap() returns a Boolean true value if the specified RRtype occurs
in the type bitmap of the NSEC3 record.
match
$matched = $rr->match( 'example.foo' );
match() returns a Boolean true value if the hash of the domain name
argument matches the hashed owner name of the NSEC3 RR.
covers
$covered = $rr->covers( 'example.foo' );
covers() returns a Boolean true value if the hash of the domain name
argument, or ancestor of that name, falls between the owner name and
the next hashed owner name of the NSEC3 RR.
encloser, nextcloser, wildcard
$encloser = $rr->encloser( 'example.foo' );
print "encloser: $encloser\n" if $encloser;
encloser() returns the name of a provable encloser of the query name
argument obtained from the NSEC3 RR.
nextcloser() returns the next closer name, which is one label longer
than the closest encloser. This is only valid after encloser() has
returned a valid domain name.
wildcard() returns the unexpanded wildcard name from which the next
closer name was possibly synthesised. This is only valid after
encloser() has returned a valid domain name.
COPYRIGHT
Copyright (c)2017,2018 Dick Franks
Portions Copyright (c)2007,2008 NLnet Labs. Author Olaf M. Kolkman
All rights reserved.
Package template (c)2009,2012 O.M.Kolkman and R.W.Franks.
LICENSE
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the original copyright notices appear in all copies and
that both copyright notice and this permission notice appear in
supporting documentation, and that the name of the author not be used
in advertising or publicity pertaining to distribution of the software
without specific prior written permission.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
SEE ALSO
perl(1), Net::DNS(3), Net::DNS::RR(3),
RFC5155(3) <https://iana.org/go/rfc5155#section-3>,
RFC9077 <https://iana.org/go/rfc9077>
Hash Algorithms <https://iana.org/assignments/dnssec-nsec3-parameters>
perl v5.34.3 2025-02-22 Net::DNS::RR::NSEC3(3)
net-dns 1.500.0 - Generated Sat Feb 22 15:24:34 CST 2025