dnssec-ksr - Man Page

dnssec-ksr [-e date/offset] [-F] [-h] [-i date/offset] [-K directory] [-k policy] [-l file] [-V] [-v level] {command} {zone}

The dnssec-ksr can be used to issue several commands that are needed to generate presigned RRsets for a zone where the private key file of the Key Signing Key (KSK) is typically offline. This requires Zone Signing Keys (ZSKs) to be pregenerated, and the DNSKEY, CDNSKEY, and CDS RRsets to be already signed in advance.

The latter is done by creating Key Signing Requests (KSRs) that can be imported to the environment where the KSK is available. Once there, this program can create Signed Key Responses (SKRs) that can be loaded by an authoritative DNS server.

-e date/offset

This option sets the end date for which keys or SKRs need to be generated (depending on the command).

-F

This options turns on FIPS (US Federal Information Processing Standards) mode if the underlying crytographic library supports running in FIPS mode.

-h

This option prints a short summary of the options and arguments to dnssec-ksr.

-i date/offset

This option sets the start date for which keys or SKRs need to be generated (depending on the command).

-K directory

This option sets the directory in which the key files are to be read or written (depending on the command).

-k policy

This option sets the specific dnssec-policy for which keys need to be generated, or signed.

-l file

This option provides a configuration file that contains a dnssec-policy statement (matching the policy set with -k).

-V

This option prints version information.

-v level

This option sets the debugging level. Level 1 is intended to be usefully verbose for general users; higher levels are intended for developers.

command

The KSR command to be executed. See below for the available commands.

zone

The name of the zone for which the KSR command is being executed.

keygen

Pregenerate a number of zone signing keys (ZSKs), given a DNSSEC policy and an interval. The number of generated keys depends on the interval and the ZSK lifetime.

request

Create a Key Signing Request (KSR), given a DNSSEC policy and an interval. This will generate a file with a number of key bundles, where each bundle contains the currently published ZSKs (according to the timing metadata).

sign

Sign a Key Signing Request (KSR), given a DNSSEC policy and an interval, creating a Signed Key Response (SKR). This will add the corresponding DNSKEY, CDS, and CDNSKEY records for the KSK that is being used for signing.

The dnssec-ksr command exits 0 on success, or non-zero if an error occurred.

When you need to generate keys for the zone "example.com" for the next year, given a dnssec-policy named "mypolicy":

dnssec-ksr -i now -e +1y -k mypolicy -l named.conf keygen example.com

Creating a KSR for the same zone and period can be done with:

dnssec-ksr -i now -e +1y -k mypolicy -l named.conf request example.com > ksr.txt

Typically you would now transfer the KSR to the system that has access to the KSK.

Signing the KSR created above can be done with:

dnssec-ksr -i now -e +1y -k kskpolicy -l named.conf -f ksr.txt sign example.com

Make sure that the DNSSEC parameters in kskpolicy match those in mypolicy.

dnssec-keygen(8), dnssec-signzone(8), BIND 9 Administrator Reference Manual.

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