Struct trust_dns_client::rr::rdata::nsec3param::NSEC3PARAM

pub struct NSEC3PARAM { /* private fields */ }

RFC 5155, NSEC3, March 2008

4.  The NSEC3PARAM Resource Record

   The NSEC3PARAM RR contains the NSEC3 parameters (hash algorithm,
   flags, iterations, and salt) needed by authoritative servers to
   calculate hashed owner names.  The presence of an NSEC3PARAM RR at a
   zone apex indicates that the specified parameters may be used by
   authoritative servers to choose an appropriate set of NSEC3 RRs for
   negative responses.  The NSEC3PARAM RR is not used by validators or
   resolvers.

   If an NSEC3PARAM RR is present at the apex of a zone with a Flags
   field value of zero, then there MUST be an NSEC3 RR using the same
   hash algorithm, iterations, and salt parameters present at every
   hashed owner name in the zone.  That is, the zone MUST contain a
   complete set of NSEC3 RRs with the same hash algorithm, iterations,
   and salt parameters.

   The owner name for the NSEC3PARAM RR is the name of the zone apex.

   The type value for the NSEC3PARAM RR is 51.

   The NSEC3PARAM RR RDATA format is class independent and is described
   below.

   The class MUST be the same as the NSEC3 RRs to which this RR refers.

4.2.  NSEC3PARAM RDATA Wire Format

 The RDATA of the NSEC3PARAM RR is as shown below:

                      1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |   Hash Alg.   |     Flags     |          Iterations           |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |  Salt Length  |                     Salt                      /
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

 Hash Algorithm is a single octet.

 Flags field is a single octet.

 Iterations is represented as a 16-bit unsigned integer, with the most
 significant bit first.

 Salt Length is represented as an unsigned octet.  Salt Length
 represents the length of the following Salt field in octets.  If the
 value is zero, the Salt field is omitted.

 Salt, if present, is encoded as a sequence of binary octets.  The
 length of this field is determined by the preceding Salt Length
 field.

Implementations

impl NSEC3PARAM

pub fn new(
    hash_algorithm: Nsec3HashAlgorithm,
    opt_out: bool,
    iterations: u16,
    salt: Vec<u8, Global>
) -> NSEC3PARAM

Constructs a new NSEC3PARAM RData for use in a Resource Record

pub fn hash_algorithm(&self) -> Nsec3HashAlgorithm

RFC 5155, NSEC3, March 2008

4.1.1.  Hash Algorithm

   The Hash Algorithm field identifies the cryptographic hash algorithm
   used to construct the hash-value.

   The acceptable values are the same as the corresponding field in the
   NSEC3 RR.

pub fn opt_out(&self) -> bool

RFC 5155, NSEC3, March 2008

4.1.2.  Flag Fields

   The Opt-Out flag is not used and is set to zero.

   All other flags are reserved for future use, and must be zero.

   NSEC3PARAM RRs with a Flags field value other than zero MUST be
   ignored.

pub fn iterations(&self) -> u16

RFC 5155, NSEC3, March 2008

4.1.3.  Iterations

   The Iterations field defines the number of additional times the hash
   is performed.

   Its acceptable values are the same as the corresponding field in the
   NSEC3 RR.

pub fn salt(&self) -> &[u8]

RFC 5155, NSEC3, March 2008

4.1.5.  Salt

   The Salt field is appended to the original owner name before hashing.

pub fn flags(&self) -> u8

flags for encoding

Trait Implementations

impl Clone for NSEC3PARAM

pub fn clone(&self) -> NSEC3PARAM

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NSEC3PARAM

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Display for NSEC3PARAM

RFC 5155, NSEC3, March 2008

4.3.  Presentation Format

   The presentation format of the RDATA portion is as follows:

   o  The Hash Algorithm field is represented as an unsigned decimal
      integer.  The value has a maximum of 255.

   o  The Flags field is represented as an unsigned decimal integer.
      The value has a maximum value of 255.

   o  The Iterations field is represented as an unsigned decimal
      integer.  The value is between 0 and 65535, inclusive.

   o  The Salt Length field is not represented.

   o  The Salt field is represented as a sequence of case-insensitive
      hexadecimal digits.  Whitespace is not allowed within the
      sequence.  This field is represented as "-" (without the quotes)
      when the Salt Length field is zero.

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Hash for NSEC3PARAM

pub fn hash<__H>(&self, state: &mut __H) where
    __H: Hasher, 

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl PartialEq<NSEC3PARAM> for NSEC3PARAM

pub fn eq(&self, other: &NSEC3PARAM) -> bool

This method tests for self and other values to be equal, and is used by ==.

pub fn ne(&self, other: &NSEC3PARAM) -> bool

This method tests for !=.

impl Eq for NSEC3PARAM

impl StructuralEq for NSEC3PARAM

impl StructuralPartialEq for NSEC3PARAM