Struct ChainKeyRing 

pub struct ChainKeyRing { /* private fields */ }

Current epoch plus an optional previous epoch, both carrying their own domain-separated ChainKey — the rotation window a chain verification is checked against (FR-008).

Building the full multi-epoch vault rotation tooling (issuing a new epoch, retiring old ones) is spec-056’s concern; this type only carries whatever window the caller resolved from the vault at verification time.

Implementations

impl ChainKeyRing

pub fn new(current_epoch: u32, current_key: ChainKey) -> Self

Construct a ring with only a current epoch (no rotation window yet).

pub fn with_previous(self, epoch: u32, key: ChainKey) -> Self

Add a previous epoch to the rotation window.

pub fn current_epoch(&self) -> u32

The current epoch number. New appends are always written under this epoch.

pub fn current_key(&self) -> ChainKey

The current epoch’s key, for writing new entries.

Trait Implementations

impl Clone for ChainKeyRing

fn clone(&self) -> ChainKeyRing

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ChainKeyRing

impl Debug for ChainKeyRing

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

Formats the value using the given formatter.