Struct SboxSpectra 

pub struct SboxSpectra {
    pub in_bits: usize,
    pub out_bits: usize,
    pub differential_spectrum: Vec<(u32, usize)>,
    pub walsh_spectrum: Vec<(u64, usize)>,
}

The affine-invariant spectra of an S-box: the fingerprints for classification up to affine equivalence.

Fields

in_bits: usize

out_bits: usize

differential_spectrum: Vec<(u32, usize)>

The differential spectrum: the multiset of DDT entries #{x : S(x⊕a)⊕S(x)=b} over a≠0, as (value → count) sorted. Invariant under any affine change of input or output coordinates.

walsh_spectrum: Vec<(u64, usize)>

The linear (Walsh) spectrum: the multiset of amplitudes |Σₓ(−1)^{⟨b,S(x)⟩⊕⟨a,x⟩}| over a, b≠0.

Trait Implementations

impl Clone for SboxSpectra

fn clone(&self) -> SboxSpectra

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SboxSpectra

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

Formats the value using the given formatter.

impl PartialEq for SboxSpectra

fn eq(&self, other: &SboxSpectra) -> 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 SboxSpectra

impl StructuralPartialEq for SboxSpectra