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CommitteeChainVerifier

iota_types::committee

Struct CommitteeChainVerifier 

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pub struct CommitteeChainVerifier { /* private fields */ }
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Verifies the committee chain: the sequence of committees linked by each epoch’s certified closing checkpoint, whose end_of_epoch_data elects the committee of the next epoch.

Starting from a trusted committee (typically the genesis committee, the operator’s trust root), feed it each epoch’s closing CertifiedCheckpointSummary in epoch order via Self::verify_epoch_close; every summary a consumer obtains this way is committee-verified, with no trust in whatever transport delivered it.

The walk is transport-agnostic by design — callers drive their own loop (an in-memory list, a remote-store stream, files on disk) and feed summaries in; this type only holds the verification state.

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impl CommitteeChainVerifier

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pub fn new(trusted_committee: Committee) -> Self

Start the walk at a trusted committee — the trust root for everything verified after it.

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pub fn epoch(&self) -> EpochId

The epoch whose closing checkpoint must be fed next.

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pub fn committee(&self) -> &Committee

The committee of Self::epoch (trusted root or chain-verified).

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pub fn verify_epoch_close( &mut self, summary: CertifiedCheckpointSummary, ) -> IotaResult<VerifiedCheckpoint>

Verify summary as the certified closing checkpoint of Self::epoch and advance to the committee it elects for the next epoch.

Errors leave the verifier unchanged, e.g. if the summary is for a different epoch, its signatures don’t verify under the current committee, or it is not a close-of-epoch checkpoint (no end_of_epoch_data).

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impl Debug for CommitteeChainVerifier

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

Formats the value using the given formatter. Read more

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