Struct SboxProfile 

pub struct SboxProfile {
    pub in_bits: usize,
    pub out_bits: usize,
    pub differential_uniformity: u32,
    pub linearity: u64,
    pub min_degree: usize,
    pub is_affine: bool,
    pub is_bijective: bool,
    pub is_apn: bool,
}

The cryptographic structural profile of an S-box.

Fields

in_bits: usize

out_bits: usize

differential_uniformity: u32

The maximum count #{x : S(x⊕a) ⊕ S(x) = b} over a≠0, b — differential-cryptanalysis resistance (lower is stronger; 2 is the optimal APN bound).

linearity: u64

maxₐ,_{b≠0} |Σₓ (−1)^{⟨b,S(x)⟩ ⊕ ⟨a,x⟩}| — linear-cryptanalysis resistance (lower is stronger).

min_degree: usize

The minimum algebraic degree over the nonzero component functions.

is_affine: bool

Every component is affine — the trivially-broken S-box.

is_bijective: bool

A permutation (n = m and injective).

is_apn: bool

Almost perfect nonlinear: differential uniformity 2, the optimal differential resistance.

Trait Implementations

impl Clone for SboxProfile

fn clone(&self) -> SboxProfile

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SboxProfile

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

Formats the value using the given formatter.

impl PartialEq for SboxProfile

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for SboxProfile

impl StructuralPartialEq for SboxProfile