Current File : /home/opti/optisoftcom-new/perl/usr/man/man3/Net::DNS::RR::NSEC3.3pm
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.\" ========================================================================
.\"
.IX Title "Net::DNS::RR::NSEC3 3"
.TH Net::DNS::RR::NSEC3 3 "2018-11-14" "perl v5.16.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Net::DNS::RR::NSEC3 \- DNS NSEC3 resource record
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\& use Net::DNS;
\& $rr = new Net::DNS::RR(\*(Aqname NSEC3 algorithm flags iterations salt hnxtname\*(Aq);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Class for \s-1DNSSEC NSEC3\s0 resource records.
.PP
The \s-1NSEC3\s0 Resource Record (\s-1RR\s0) provides authenticated denial of
existence for \s-1DNS\s0 Resource Record Sets.
.PP
The \s-1NSEC3 RR\s0 lists \s-1RR\s0 types present at the original owner name of the
\&\s-1NSEC3 RR. \s0 It includes the next hashed owner name in the hash order
of the zone. The complete set of \s-1NSEC3\s0 RRs in a zone indicates which
RRSets exist for the original owner name of the \s-1RR\s0 and form a chain
of hashed owner names in the zone.
.SH "METHODS"
.IX Header "METHODS"
The available methods are those inherited from the base class augmented
by the type-specific methods defined in this package.
.PP
Use of undocumented package features or direct access to internal data
structures is discouraged and could result in program termination or
other unpredictable behaviour.
.SS "algorithm"
.IX Subsection "algorithm"
.Vb 2
\& $algorithm = $rr\->algorithm;
\& $rr\->algorithm( $algorithm );
.Ve
.PP
The Hash Algorithm field is represented as an unsigned decimal
integer. The value has a maximum of 255.
.PP
\&\fIalgorithm()\fR may also be invoked as a class method or simple function
to perform mnemonic and numeric code translation.
.SS "flags"
.IX Subsection "flags"
.Vb 2
\& $flags = $rr\->flags;
\& $rr\->flags( $flags );
.Ve
.PP
The Flags field is an unsigned decimal integer
interpreted as eight concatenated Boolean values.
.IP "optout" 4
.IX Item "optout"
.Vb 1
\& $rr\->optout(1);
\&
\& if ( $rr\->optout ) {
\& ...
\& }
.Ve
.Sp
Boolean Opt Out flag.
.SS "iterations"
.IX Subsection "iterations"
.Vb 2
\& $iterations = $rr\->iterations;
\& $rr\->iterations( $iterations );
.Ve
.PP
The Iterations field is represented as an unsigned decimal
integer. The value is between 0 and 65535, inclusive.
.SS "salt"
.IX Subsection "salt"
.Vb 2
\& $salt = $rr\->salt;
\& $rr\->salt( $salt );
.Ve
.PP
The Salt field is represented as a contiguous sequence of hexadecimal
digits. A \*(L"\-\*(R" (unquoted) is used in string format to indicate that the
salt field is absent.
.SS "saltbin"
.IX Subsection "saltbin"
.Vb 2
\& $saltbin = $rr\->saltbin;
\& $rr\->saltbin( $saltbin );
.Ve
.PP
The Salt field as a sequence of octets.
.SS "hnxtname"
.IX Subsection "hnxtname"
.Vb 2
\& $hnxtname = $rr\->hnxtname;
\& $rr\->hnxtname( $hnxtname );
.Ve
.PP
The Next Hashed Owner Name field points to the next node that has
authoritative data or contains a delegation point \s-1NS\s0 RRset.
.SS "typelist"
.IX Subsection "typelist"
.Vb 3
\& @typelist = $rr\->typelist;
\& $typelist = $rr\->typelist;
\& $rr\->typelist( @typelist );
.Ve
.PP
\&\fItypelist()\fR identifies the RRset types that exist at the domain name
matched by the \s-1NSEC3 RR. \s0 When called in scalar context, the list is
interpolated into a string.
.SS "typemap"
.IX Subsection "typemap"
.Vb 1
\& $exists = $rr\->typemap($rrtype);
.Ve
.PP
\&\fItypemap()\fR returns a Boolean true value if the specified RRtype occurs
in the type bitmap of the \s-1NSEC3\s0 record.
.SS "covers"
.IX Subsection "covers"
.Vb 1
\& $covered = $rr\->covers( \*(Aqexample.foo\*(Aq );
.Ve
.PP
\&\fIcovers()\fR 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 \s-1NSEC3 RR.\s0
.SS "encloser, nextcloser, wildcard"
.IX Subsection "encloser, nextcloser, wildcard"
.Vb 2
\& $encloser = $rr\->encloser( \*(Aqexample.foo\*(Aq );
\& print "encloser: $encloser\en" if $encloser;
.Ve
.PP
\&\fIencloser()\fR returns the name of a provable encloser of the query name
argument obtained from the \s-1NSEC3 RR.\s0
.PP
\&\fInextcloser()\fR returns the next closer name, which is one label longer
than the closest encloser.
This is only valid after \fIencloser()\fR has returned a valid domain name.
.PP
\&\fIwildcard()\fR returns the unexpanded wildcard name from which the next
closer name was possibly synthesised.
This is only valid after \fIencloser()\fR has returned a valid domain name.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (c)2017,2018 Dick Franks
.PP
Portions Copyright (c)2007,2008 NLnet Labs. Author Olaf M. Kolkman
.PP
All rights reserved.
.PP
Package template (c)2009,2012 O.M.Kolkman and R.W.Franks.
.SH "LICENSE"
.IX Header "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 above copyright notice appear in all copies and that both that
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.
.PP
\&\s-1THE SOFTWARE IS PROVIDED \*(L"AS IS\*(R", 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.\s0
.SH "SEE ALSO"
.IX Header "SEE ALSO"
perl, Net::DNS, Net::DNS::RR, \s-1RFC5155, RFC4648\s0
.PP
Hash Algorithms <http://www.iana.org/assignments/dnssec-nsec3-parameters>
Mini Shell