4.16. dnssec-settime --- DNSKEY timing metadata setter¶

4.16.1. Synopsis¶

dnssec-settime [-f] [-K directory] [-L ttl] [-P date/offset] [-A date/offset] [-R date/offset] [-I date/offset] [-D date/offset] [-S <predecessor-key>] [-i interval] [-h] [-V] [-v level] [-E <engine-name>] <keyfile>

4.16.2. Description¶

dnssec-settime reads a DNSSEC private key file and sets the key timing metadata as specified by the -P, -A, -R, -I, and -D options. The metadata can then be used by dnssec-signzone(1) or other signing software to determine when a key is to be published, whether it should be used for signing a zone, etc.

If none of these options is set on the command line, then dnssec-settime simply prints the key timing metadata already stored in the key.

When key metadata fields are changed, both files of a key pair (Knnnn.+aaa+iiiii.key and Knnnn.+aaa+iiiii.private) are regenerated. Metadata fields are stored in the private file. A human-readable description of the metadata is also placed in comments in the key file. The private file's permissions are always set to be inaccessible to anyone other than the owner (mode 0600).

4.16.3. Options¶

-f¶: Force an update of an old-format key with no metadata fields. Without this option, dnssec-settime will fail when attempting to update a legacy key. With this option, the key will be recreated in the new format, but with the original key data retained. The key's creation date will be set to the present time. If no other values are specified, then the key's publication and activation dates will also be set to the present time.

Error

TODO: Remove this option.

-K <directory>¶: Sets the directory in which the key files are to reside.

-L <ttl>¶: Sets the default TTL to use for this key when it is converted into a DNSKEY RR. If the key is imported into a zone, this is the TTL that will be used for it, unless there was already a DNSKEY RRset in place, in which case the existing TTL would take precedence. If this value is not set and there is no existing DNSKEY RRset, the TTL will default to the SOA TTL. Setting the default TTL to 0 or none removes it from the key.

-E <engine-name>¶: Specifies the OpenSSL engine to use for cryptographic operations, such as a secure key store used for signing.

-h¶: Print program usage information and exit.

-v <level>¶: Set the verbosity level.

-V¶: Print the program's version and exit.

4.16.4. Timing options¶

Dates can be expressed in the format YYYYMMDD or YYYYMMDDHHMMSS. If the argument begins with a + or -, it is interpreted as an offset from the present time. For convenience, if such an offset is followed by one of the suffixes y, mo, w, d, h, or mi, then the offset is computed in years (defined as 365 24-hour days, ignoring leap years), months (defined as 30 24-hour days), weeks, days, hours, or minutes, respectively. Without a suffix, the offset is computed in seconds. To explicitly prevent a date from being set, use none or never.

-P <date/offset>¶: Sets the date on which a key is to be published to the zone. After that date, the key will be included in the zone but will not be used to sign it.

-D <date/offset>¶: Sets the date on which the key is to be deleted. After that date, the key will no longer be included in the zone. (It may remain in the key repository, however.)

-A <date/offset>¶: Sets the date on which the key is to be activated. After that date, the key will be included in the zone and used to sign it. If set, and if -P is not set, then the publication date will be set to the activation date minus the prepublication interval.

-R <date/offset>¶: Sets the date on which the key is to be revoked. After that date, the key will be flagged as revoked. It will be included in the zone and will be used to sign it.

-I <date/offset>¶: Sets the date on which the key is to be retired. After that date, the key will still be included in the zone, but it will not be used to sign it.

-i <interval>¶

Sets the pre-publication interval for a key. If set, then the publication and activation dates must be separated by at least this much time. If the activation date is specified but the publication date isn't, then the publication date will default to this much time before the activation date; conversely, if the publication date is specified but activation date isn't, then activation will be set to this much time after publication.

If the key is being created as an explicit successor to another key, then the default prepublication interval is 30 days; otherwise it is zero.

As with date offsets, if the argument is followed by one of the suffixes y, mo, w, d, h, or mi, then the interval is measured in years, months, weeks, days, hours, or minutes, respectively. Without a suffix, the interval is measured in seconds.

-S <predecessor-key>¶: Select a key for which the key being modified will be an explicit successor. The name, algorithm, size, and type of the predecessor key must exactly match those of the key being modified. The activation date of the successor key will be set to the inactivation date of the predecessor. The publication date will be set to the activation date minus the prepublication interval, which defaults to 30 days.

4.16.5. Printing options¶

dnssec-settime can also be used to print the timing metadata associated with a key.

-u¶: Print times in UNIX epoch format.

-p (C | P | A | R | I | D | all)¶: Print a specific metadata value or set of metadata values. The -p option may be followed by one or more of the following letters to indicate which value or values to print: C for the creation date, P for the publication date, A for the activation date, R for the revocation date, I for the inactivation date, or D for the deletion date. To print all of the metadata, use -pall.

4.16.6. See also¶

dnssec-keygen(1), dnssec-signzone(1)