Struct EphemeralNonceVault 

pub struct EphemeralNonceVault { /* private fields */ }

Ephemeral, in-memory vault for single-use FROST signing nonces. Bound to a CSPRNG-generated boot_epoch_id to guarantee rollback immunity.

Implementations

impl EphemeralNonceVault

pub fn new() -> Self

Creates a fresh vault instance with a unique 128-bit boot epoch ID.

pub fn boot_epoch_id(&self) -> u128

The 128-bit boot epoch identifier for this vault instance.

pub fn preprocess_batch( &mut self, signing_share: &SigningShare, count: usize, ) -> Vec<(NonceSlotId, SigningCommitments)>

Generates count fresh nonces and returns public commitments for the Coordinator.

pub fn take_once(&mut self, slot: &NonceSlotId) -> Option<SigningNonces>

Atomically removes and returns the secret SigningNonces for slot. Enforces the single-use invariant: once taken, subsequent calls return None.

pub fn len(&self) -> usize

Count of active unconsumed nonces.

pub fn is_empty(&self) -> bool

Checks if the vault is empty.

Trait Implementations

impl Default for EphemeralNonceVault

fn default() -> Self

Returns the “default value” for a type.