NAME

       nsec3hash - generate NSEC3 hash

SYNOPSIS

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

       nsec3hash -r {algorithm} {flags} {iterations} {salt} {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.

       If this command is invoked as nsec3hash -r, it takes  arguments  in  order,  matching  the
       first  four  fields  of  an  NSEC3  record  followed by the domain name: algorithm, flags,
       iterations, salt, domain. This makes it convenient to copy and paste a portion of an NSEC3
       or NSEC3PARAM record into a command line to confirm the correctness of an NSEC3 hash.

ARGUMENTS

       salt   This is the salt provided to the hash algorithm.

       algorithm
              This  is  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.

       flags  This  is  provided  for compatibility with NSEC3 record presentation format, but is
              ignored since the flags do not affect the hash.

       iterations
              This is the number of additional times the hash should be performed.

       domain This is the domain name to be hashed.

SEE ALSO

       BIND 9 Administrator Reference Manual, RFC 5155.

AUTHOR

       Internet Systems Consortium

COPYRIGHT

       2022, Internet Systems Consortium