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.. highlight:: none
``knsec3hash`` – NSEC hash computation utility
==============================================
Synopsis
--------
:program:`knsec3hash` *salt* *algorithm* *iterations* *name*
:program:`knsec3hash` *algorithm* *flags* *iterations* *salt* *name*
:program:`knsec3hash` [*-h*] [*-V*]
Description
-----------
This utility generates a NSEC3 hash for a given domain name and parameters of NSEC3 hash.
Parameters
..........
*salt*
Specifies a binary salt encoded as a hexadecimal string.
*algorithm*
Specifies a hashing algorithm by number. Currently, the only supported algorithm is SHA-1 (number 1).
*iterations*
Specifies the number of additional iterations of the hashing algorithm.
*name*
Specifies the domain name to be hashed.
*flags*
Specifies NSEC3 flags as an unsigned integer.
Options
.......
**-h**, **--help**
Print the program help.
**-V**, **--version**
Print the program version. The option **-VV** makes the program
print the compile time configuration summary.
Exit values
-----------
Exit status of 0 means successful operation. Any other exit status indicates
an error.
Examples
--------
::
$ knsec3hash 1 0 10 c01dcafe knot-dns.cz
7PTVGE7QV67EM61ROS9238P5RAKR2DM7 (salt=c01dcafe, hash=1, iterations=10)
::
$ knsec3hash - 1 0 net
A1RT98BS5QGC9NFI51S9HCI47ULJG6JH (salt=-, hash=1, iterations=0)
See Also
--------
:rfc:`5155` – DNS Security (DNSSEC) Hashed Authenticated Denial of Existence.
:manpage:`knotc(8)`, :manpage:`knotd(8)`.
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