dnssec-dsfromkey(1M)

Name

dnssec-dsfromkey - DNSSEC DS RR generation tool

Synopsis

dnssec-dsfromkey [-v level] [-1] [-2] [-a alg] keyfile

dnssec-dsfromkey -s [-v level] [-1] [-2] [-a alg] [-c class]
     [-d dir] keyfile

Description

dnssec-dsfromkey

Options

The following options are supported:

–1

Use SHA-1 as the digest algorithm. The default is to use both SHA-1 and SHA-256.

–2

Use SHA-256 as the digest algorithm.

–a algorithm

Select the digest algorithm. The value of algorithm must be one of SHA-1 (SHA1) or SHA-256 (SHA256). These values are case-insensitive.

–v level

Sets the debugging level.

–s

Keyset mode: in place of the keyfile name, the argument is the DNS domain name of a keyset file. The –c and –d options have meaning only in this mode.

–c class

Specifies the DNS class (default is IN); useful only in the keyset mode.

–d directory

Look for keyset files in directory as the directory; ignored when not in the keyset mode.

Examples

To build the SHA-256 DS RR from the Kexample.com.+003+26160 keyfile name, use a command such as the following:

# dnssec-dsfromkey -2 Kexample.com.+003+26160

This command would produce output similar to the following:

example.com. IN DS 26160 5 2
3A1EADA7A74B8D0BA86726B0C227AA85AB8BBD2B2004F41A868A54F0
C5EA0B94

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(1M).

The keyset file name is built from the directory, the string keyset- and the dnsname.

Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE Availability service/network/dns/bind Interface Stability Volatile

See also

dnssec-keygen(1M), dnssec-signzone(1M), attributes(5)

RFC 3658, RFC 4509

See the BIND 9 Administrator's Reference Manual. As of the date of publication of this man page, this document is available at https://kb.isc.org/article/AA-01031https://kb.isc.org/article/AA-01031 .

Caution

A keyfile error can produce a “file not found” message, even if the file exists.