---
name: "nsec3hash"
section: "8"
platform: "macos"
package: "bind9"
version: "65"
release: "macOS 26.5"
platforms: ["linux", "macos"]
url: "https://new.carta.tech/nsec3hash/8"
---

# nsec3hash(8)

generate NSEC3 hash

## NAME

nsec3hash - generate NSEC3 hash

## SYNOPSIS

**nsec3hash** {*salt*} {*algorithm*} {*iterations*} {*domain*}

## DESCRIPTION

**nsec3hash** generates an NSEC3 hash based on a set of NSEC3 parameters. This can be used to check the validity of NSEC3 records in a signed zone.

## ARGUMENTS

salt

The salt provided to the hash algorithm.

algorithm

A number indicating the hash algorithm. Currently the only supported hash algorithm for NSEC3 is SHA-1, which is indicated by the number 1; consequently "1" is the only useful value for this argument.

iterations

The number of additional times the hash should be performed.

domain

The domain name to be hashed.

## SEE ALSO

BIND 9 Administrator Reference Manual, RFC 5155.

## AUTHOR

**Internet Systems Consortium, Inc.**

## COPYRIGHT

Copyright © 2009, 2014-2016 Internet Systems Consortium, Inc. ("ISC")\