dnssec-dsfromkey - DNSSEC DS RR generation tool
dnssec-dsfromkey [-1 | -2 | -a alg] [-C | -l domain] [-T TTL]
[-v level] [-K directory] {keyfile}
dnssec-dsfromkey [-1 | -2 | -a alg] [-C | -l domain] [-T TTL]
[-v level] [-c class] [-A] {-f file} [dnsname]
dnssec-dsfromkey [-1 | -2 | -a alg] [-C | -l domain] [-T TTL]
[-v level] [-c class] [-K directory] {-s} {dnsname}
dnssec-dsfromkey [-h | -V]
DNSSEC-DSFROMKEY(8) BIND9 DNSSEC-DSFROMKEY(8)
NAME
dnssec-dsfromkey - DNSSEC DS RR generation tool
SYNOPSIS
dnssec-dsfromkey [-1 | -2 | -a alg] [-C | -l domain] [-T TTL]
[-v level] [-K directory] {keyfile}
dnssec-dsfromkey [-1 | -2 | -a alg] [-C | -l domain] [-T TTL]
[-v level] [-c class] [-A] {-f file} [dnsname]
dnssec-dsfromkey [-1 | -2 | -a alg] [-C | -l domain] [-T TTL]
[-v level] [-c class] [-K directory] {-s} {dnsname}
dnssec-dsfromkey [-h | -V]
DESCRIPTION
The dnssec-dsfromkey command outputs DS (Delegation Signer) resource
records (RRs) and other similarly-constructed RRs: with the -l option
it outputs DLV (DNSSEC Lookaside Validation) RRs; or with the -C it
outputs CDS (Child DS) RRs.
The input keys can be specified in a number of ways:
By default, dnssec-dsfromkey reads a key file named like
Knnnn.+aaa+iiiii.key, as generated by dnssec-keygen.
With the -f file option, dnssec-dsfromkey reads keys from a zone file
or partial zone file (which can contain just the DNSKEY records).
With the -s option, dnssec-dsfromkey reads a keyset- file, as generated
by dnssec-keygen -C.
OPTIONS
-1
An abbreviation for -a SHA1
-2
An abbreviation for -a SHA-256
-a algorithm
Specify a digest algorithm to use when converting DNSKEY records to
DS records. This option can be repeated, so that multiple DS
records are created for each DNSKEY record.
The algorithm must be one of SHA-1, SHA-256, or SHA-384. These
values are case insensitive, and the hyphen may be omitted. If no
algorithm is specified, the default is to use both SHA-1 and
SHA-256.
-A
Include ZSKs when generating DS records. Without this option, only
keys which have the KSK flag set will be converted to DS records
and printed. Useful only in -f zone file mode.
-c class
Specifies the DNS class (default is IN). Useful only in -s keyset
or -f zone file mode.
-C
Generate CDS records rather than DS records. This is mutually
exclusive with the -l option for generating DLV records.
-f file
Zone file mode: dnssec-dsfromkey's final dnsname argument is the
DNS domain name of a zone whose master file can be read from file.
If the zone name is the same as file, then it may be omitted.
If file is "-", then the zone data is read from the standard input.
This makes it possible to use the output of the dig command as
input, as in:
dig dnskey example.com | dnssec-dsfromkey -f - example.com
-h
Prints usage information.
-K directory
Look for key files or keyset- files in directory.
-l domain
Generate a DLV set instead of a DS set. The specified domain is
appended to the name for each record in the set. This is mutually
exclusive with the -C option for generating CDS records.
-s
Keyset mode: dnssec-dsfromkey's final dnsname argument is the DNS
domain name used to locate a keyset- file.
-T TTL
Specifies the TTL of the DS records. By default the TTL is omitted.
-v level
Sets the debugging level.
-V
Prints version information.
EXAMPLE
To build the SHA-256 DS RR from the Kexample.com.+003+26160 keyfile
name, you can issue the following command:
dnssec-dsfromkey -2 Kexample.com.+003+26160
The command would print something like:
example.com. IN DS 26160 5 2
3A1EADA7A74B8D0BA86726B0C227AA85AB8BBD2B2004F41A868A54F0C5EA0B94
FILES
The keyfile can be designated by the key identification
Knnnn.+aaa+iiiii or the full file name Knnnn.+aaa+iiiii.key as
generated by dnssec-keygen(8).
The keyset file name is built from the directory, the string keyset-
and the dnsname.
CAVEAT
A keyfile error can give a "file not found" even if the file exists.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+--------------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------------+
|Availability | network/dns/bind |
+---------------+--------------------------+
|Stability | Pass-through uncommitted |
+---------------+--------------------------+
SEE ALSO
dnssec-keygen(8), dnssec-signzone(8), BIND 9 Administrator Reference
Manual, RFC 3658 (DS RRs), RFC 4431 (DLV RRs), RFC 4509 (SHA-256 for DS
RRs), RFC 6605 (SHA-384 for DS RRs), RFC 7344 (CDS and CDNSKEY RRs).
AUTHOR
Internet Systems Consortium, Inc.
COPYRIGHT
Copyright (C) 2008-2012, 2014-2016, 2018-2021 Internet Systems
Consortium, Inc. ("ISC")
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from
http://ftp.isc.org/isc/bind9/9.11.36/bind-9.11.36.tar.gz.
Further information about this software can be found on the open source
community website at http://www.isc.org/software/bind/.
ISC 2012-05-02 DNSSEC-DSFROMKEY(8)