Struct State 

pub struct State(pub [Wire; 8]);

The internal state of SHA-256.

The state size is 256 bits. For efficiency reasons it’s packed in 8 x 32-bit words, and not 4 x 64-bit words.

The elements are referred to as a–h or H0–H7.

Tuple Fields

0: [Wire; 8]

Implementations

impl State

pub const fn new(wires: [Wire; 8]) -> Self

pub fn public(builder: &CircuitBuilder) -> Self

pub fn private(builder: &CircuitBuilder) -> Self

pub fn iv(builder: &CircuitBuilder) -> Self

pub fn pack_4x64b(&self, builder: &CircuitBuilder) -> [Wire; 4]

Packs the state into 4 x 64-bit big-endian words.

The lower-numbered word of each pair is the more significant, so it takes the high half.

Preconditions

• Every state word holds its value in the low 32 bits, with the high 32 empty.
  • The word lifted into the high half has its own high bits discarded by the shift.
  • The word entering the low half is passed through unmasked.

Masking it here would commit one redundant intermediate per word. Every caller already clears before packing.

Trait Implementations

impl Clone for State

fn clone(&self) -> State

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for State