Module ers 

RFC 4998 Evidence Record Syntax (ERS) for long-term archival.

Implements Evidence Records that protect artifacts over decades as hash algorithms weaken. Periodic re-timestamping with stronger algorithms maintains verifiability.

Confium extends standard ERS with periodic re-quorum: every N years, the current quorum re-signs and re-encrypts archives under current algorithm suites.

See TODO.roadmap/37-long-term-archival.md for full spec.

Structs

ArchiveTimeStampSequence

A sequence of archive timestamps covering a time period.

ErsVerificationResult

Outcome of verify_evidence_record.

EvidenceRecord

An Evidence Record (RFC 4998).

SequenceCheck

Per-sequence outcome of verify_evidence_record.

TimeStamp

An RFC 3161 timestamp token.

Tsa

A trusted Time Stamping Authority identity.

Enums

ErsError

Errors during ERS operations.

HashAlgorithm

Hash algorithm identifier.

Functions

build_initial_evidence_record

Build an initial Evidence Record for an artifact.

renew_evidence_record

Renew an existing Evidence Record by adding a new timestamp sequence with a stronger hash algorithm.

renewal_count

Count renewal rounds applied so far.

verify_evidence_record

Verify an Evidence Record end-to-end against the artifact it protects and the set of trusted TSAs.