Struct WindowLoad 

pub struct WindowLoad {
    pub active: bool,
    pub block: b5,
    pub next_key: bool,
}

XOF window load: which block (if any) to address at each residue.

Block t is loaded into the window at chain first_chain(t) − 1, so its RAM read is addressed one cycle earlier. Block 0 is addressed at residue 66 of the previous period (for the next key).

Why a window: chain i needs XOF bytes 18i..18i+18, which may straddle two 64-byte blocks. Keeping the current and the next block in two registers (indexed by block parity) lets every chain pick its 18 bytes with a fixed multiplexer (pick_secret_kernel), and the XOF RAM needs only one read per block.

  residue:  first_chain(t) − 2    first_chain(t) − 1     first_chain(t)
            address xof_ram       RAM data → window[t%2]  chain reads window

Fields

active: bool

A block read is addressed this residue.

block: b5

The block number.

5 bits: 0..XOF_BLOCKS (20).

next_key: bool

The block belongs to the key that starts next period.

Only block 0 has this set: its read happens two cycles before chain 0, which is at the end of the previous period.

Trait Implementations

impl Clone for WindowLoad

fn clone(&self) -> WindowLoad

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WindowLoad

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

Formats the value using the given formatter.

impl Default for WindowLoad

fn default() -> WindowLoad

Returns the “default value” for a type.

impl Digital for WindowLoad

const BITS: usize

Associated constant that gives the total number of bits needed to represent the value.

fn static_kind() -> Kind

Returns the [Kind] (run time type descriptor) of the value as a static method

fn bin(self) -> Box<[BitX]>

Returns the binary representation of the value as a vector of [BitX].

fn dont_care() -> Self

Returns a “don’t care” value for the type.

fn bits() -> usize

Returns the number of bits needed to represent the value.

fn kind(&self) -> Kind

Returns the [Kind] (run time type descriptor) of the value.

fn typed_bits(self) -> TypedBits

Returns the value as a [TypedBits], which includes both the bits and the kind.

fn discriminant(self) -> TypedBits

Returns the discriminant of the value as a [TypedBits].

fn variant_kind(self) -> Kind

Returns the [Kind] of the variant if the value is an enum with variants.

fn binary_string(self) -> String

Returns the binary representation of the value as a string of ‘0’, ‘1’, and ‘X’.

impl PartialEq for WindowLoad

fn eq(&self, other: &WindowLoad) -> 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 Copy for WindowLoad

impl StructuralPartialEq for WindowLoad