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.TH "DNSSEC-VERIFY" "8" "@RELEASE_DATE@" "@BIND9_VERSION@" "BIND 9"
.SH NAME
dnssec-verify \- DNSSEC zone verification tool
.SH SYNOPSIS
.sp
\fBdnssec\-verify\fP [\fB\-c\fP class] [\fB\-E\fP engine] [\fB\-I\fP input\-format] [\fB\-o\fP origin] [\fB\-q\fP] [\fB\-v\fP level] [\fB\-V\fP] [\fB\-x\fP] [\fB\-z\fP] {zonefile}
.SH DESCRIPTION
.sp
\fBdnssec\-verify\fP verifies that a zone is fully signed for each
algorithm found in the DNSKEY RRset for the zone, and that the
NSEC/NSEC3 chains are complete.
.SH OPTIONS
.INDENT 0.0
.TP
.B \fB\-c class\fP
This option specifies the DNS class of the zone.
.TP
.B \fB\-E engine\fP
This option specifies the cryptographic hardware to use, when applicable.
.sp
When BIND 9 is built with OpenSSL, this needs to be set to the OpenSSL
engine identifier that drives the cryptographic accelerator or
hardware service module (usually \fBpkcs11\fP). When BIND is
built with native PKCS#11 cryptography (\fB\-\-enable\-native\-pkcs11\fP), it
defaults to the path of the PKCS#11 provider library specified via
\fB\-\-with\-pkcs11\fP\&.
.TP
.B \fB\-I input\-format\fP
This option sets the format of the input zone file. Possible formats are \fBtext\fP
(the default) and \fBraw\fP\&. This option is primarily intended to be used
for dynamic signed zones, so that the dumped zone file in a non\-text
format containing updates can be verified independently.
This option is not useful for non\-dynamic zones.
.TP
.B \fB\-o origin\fP
This option indicates the zone origin. If not specified, the name of the zone file is
assumed to be the origin.
.TP
.B \fB\-v level\fP
This option sets the debugging level.
.TP
.B \fB\-V\fP
This option prints version information.
.TP
.B \fB\-q\fP
This option sets quiet mode, which suppresses output. Without this option, when \fBdnssec\-verify\fP
is run it prints to standard output the number of keys in use, the
algorithms used to verify the zone was signed correctly, and other status
information. With this option, all non\-error output is suppressed, and only the exit
code indicates success.
.TP
.B \fB\-x\fP
This option verifies only that the DNSKEY RRset is signed with key\-signing keys.
Without this flag, it is assumed that the DNSKEY RRset is signed
by all active keys. When this flag is set, it is not an error if
the DNSKEY RRset is not signed by zone\-signing keys. This corresponds
to the \fB\-x\fP option in \fBdnssec\-signzone\fP\&.
.TP
.B \fB\-z\fP
This option indicates that the KSK flag on the keys should be ignored when determining whether the zone is
correctly signed. Without this flag, it is assumed that there is
a non\-revoked, self\-signed DNSKEY with the KSK flag set for each
algorithm, and that RRsets other than DNSKEY RRset are signed with
a different DNSKEY without the KSK flag set.
.sp
With this flag set, BIND 9 only requires that for each algorithm, there
be at least one non\-revoked, self\-signed DNSKEY, regardless of
the KSK flag state, and that other RRsets be signed by a
non\-revoked key for the same algorithm that includes the self\-signed
key; the same key may be used for both purposes. This corresponds to
the \fB\-z\fP option in \fBdnssec\-signzone\fP\&.
.TP
.B \fBzonefile\fP
This option indicates the file containing the zone to be signed.
.UNINDENT
.SH SEE ALSO
.sp
\fBdnssec\-signzone(8)\fP, BIND 9 Administrator Reference Manual, \fI\%RFC 4033\fP\&.
.SH AUTHOR
Internet Systems Consortium
.SH COPYRIGHT
2023, Internet Systems Consortium
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