Struct EngineState 

pub struct EngineState {
    pub msg_max_size: u32,
    /* private fields */
}

Identity discovered for a remote authoritative engine, with optional HMAC-established trusted time.

Fields

msg_max_size: u32

Maximum message size the remote engine can accept.

Implementations

impl EngineState

pub fn new(engine_id: Bytes, engine_boots: u32, engine_time: u32) -> Self

Create engine state whose boots/time are already authenticated.

pub fn discovered(engine_id: Bytes, msg_max_size: u32) -> Self

Create an identity learned through unauthenticated discovery.

pub fn with_msg_max_size( engine_id: Bytes, engine_boots: u32, engine_time: u32, msg_max_size: u32, ) -> Self

Create authenticated state with explicit msgMaxSize.

pub fn with_msg_max_size_capped( engine_id: Bytes, engine_boots: u32, engine_time: u32, reported_msg_max_size: u32, session_max: u32, ) -> Self

Create authenticated state with msgMaxSize capped to a session limit.

pub fn engine_id(&self) -> &Bytes

Return the authoritative engine ID.

pub fn trusted_time(&self) -> Option<&TrustedEngineTime>

Return the HMAC-established trusted time, if synchronization occurred.

pub fn estimated_boots_time(&self) -> (u32, u32)

Return the progressing trusted boots/time pair, or (0, 0) before the first authenticated message establishes a notion.

pub fn estimated_time(&self) -> u32

Retained convenience accessor for the estimated time component.

pub fn update_time(&mut self, response_boots: u32, response_time: u32) -> bool

Apply a forward-only authenticated high-water update.

The caller must have verified the message HMAC and engine identity.

pub fn check_and_update_timeliness( &mut self, msg_boots: u32, msg_time: u32, ) -> bool

Apply RFC 3414 Step 7(b) and evaluate the asymmetric time window. The caller must first verify the message HMAC and engine identity.

pub fn is_in_time_window(&self, msg_boots: u32, msg_time: u32) -> bool

Check the authoritative-role symmetric window against trusted time.

Trait Implementations

impl Clone for EngineState

fn clone(&self) -> EngineState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EngineState

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

Formats the value using the given formatter.