Struct ReplayWindow 

pub struct ReplayWindow {
    pub last_accepted: u32,
    pub last_accepted_time_ms: u64,
    pub backward_bitmap: u8,
    pub recent_mics: Deque<RecentMic, umsh_crypto::::replay::ReplayWindow::{constant#0}>,
}

Replay-detection window for secure traffic from one sender.

Fields

last_accepted: u32

Highest accepted frame counter.

last_accepted_time_ms: u64

Timestamp of the highest accepted frame.

backward_bitmap: u8

Occupancy bitmap for the backward counter window.

recent_mics: Deque<RecentMic, umsh_crypto::::replay::ReplayWindow::{constant#0}>

Accepted MICs retained for duplicate late-arrival checks.

Implementations

impl ReplayWindow

pub fn new() -> ReplayWindow

Create a fresh replay window.

pub fn check(&self, counter: u32, mic: &[u8], now_ms: u64) -> ReplayVerdict

Evaluate whether counter and mic are acceptable at now_ms.

pub fn is_acknowledgeable_duplicate( &self, counter: u32, mic: &[u8], now_ms: u64, ) -> bool

Return whether this is an exact, recently accepted packet eligible for an idempotent duplicate acknowledgement.

This deliberately requires both the bounded counter distance and a matching retained MIC. Merely reusing an occupied counter does not prove that the receiver previously accepted this logical packet.

pub fn accept(&mut self, counter: u32, mic: &[u8], now_ms: u64)

Record an accepted counter and mic at now_ms.

pub fn reset(&mut self, baseline: u32, now_ms: u64)

Reset the replay window to a known baseline.

Trait Implementations

impl Clone for ReplayWindow

fn clone(&self) -> ReplayWindow

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReplayWindow

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

Formats the value using the given formatter.

impl Default for ReplayWindow

fn default() -> ReplayWindow

Returns the “default value” for a type.