Struct Sha2_256f 

pub struct Sha2_256f;

SLH-DSA-SHA2-256f parameter set (NIST security level 5, fast operations).

Trait Implementations

impl Clone for Sha2_256f

fn clone(&self) -> Sha2_256f

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for Sha2_256f

fn default() -> Sha2_256f

Returns the “default value” for a type.

impl Params for Sha2_256f

const N: usize = 32

Security parameter n: hash output length in bytes.

const H: usize = 68

Total hypertree height: h = d * h'.

const D: usize = 17

Number of layers d in the hypertree.

const H_PRIME: usize = 4

Height h' of each individual XMSS tree within the hypertree.

const A: usize = 9

Height a of each FORS tree (each tree has 2^a leaves).

const K: usize = 35

Number k of FORS trees used per signature.

const M: usize = 49

Message digest length m in bytes, output by H_msg.

const NAME: &'static str = "SLH-DSA-SHA2-256f"

Human-readable name of this parameter set (e.g., "SLH-DSA-SHAKE-128f").

type Hash = Sha2Family

Tweakable-hash family for this parameter set: ShakeFamily (FIPS 205 §11.1) or Sha2Family (§11.2).

const LG_W: usize = 4

Winternitz parameter lg(w), always 4 for the FIPS 205 parameter sets.

const W: usize = 16

Winternitz parameter w = 2^lg_w = 16.

const LEN1: usize = _

WOTS+ parameter len1 = ceil(8*n / lg_w) = 2*n (since lg_w = 4).

const LEN2: usize = 3

WOTS+ parameter len2 = 3 for all FIPS 205 parameter sets.

const LEN: usize = _

WOTS+ parameter len = len1 + len2: total number of hash chains.

const PK_LEN: usize = _

Public key size in bytes: 2*n (PK.seed || PK.root).

const SK_LEN: usize = _

Secret key size in bytes: 4*n (SK.seed || SK.prf || PK.seed || PK.root).