Struct Checkpoint 

pub struct Checkpoint {
    pub auth_root: AuthRoot,
    pub keys: Vec<Key>,
    pub attestor: Option<Thumbprint>,
}

Trusted checkpoint for partial replay.

Enables thin clients to verify only recent cozies without replaying full history from genesis.

Security

The caller must establish trust in this checkpoint before using it. Per SPEC §6.3.3, checkpoint trust is established via signature by a key the client trusts (self, service, or cross-attestation).

Fields

auth_root: AuthRoot

The trusted Auth State at checkpoint.

keys: Vec<Key>

Active keys at checkpoint (needed to verify subsequent cozies).

attestor: Option<Thumbprint>

Future: thumbprint of key that attested this checkpoint.

Not currently verified; included for forward compatibility.

Trait Implementations

impl Clone for Checkpoint

fn clone(&self) -> Checkpoint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Checkpoint

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

Formats the value using the given formatter.