scripts/recovery is a program that opens a capsule with only the Go
standard library, golang.org/x/crypto, filippo.io/age and the BLS12-381
library of drand/kyber-bls12381, as the informative annex of the draft
v0.15 describes it: the pinned Quicknet parameters, the release object,
the frame, the BLS verification of the release, the tlock stanza with H2,
H3 and H4, the age file of SEALED_CONTROL opened with its file key (HKDF,
header MAC and STREAM written out), the X25519 layers with age, and the
content of formats 1, 2 and 3. A test forbids importing this module, tlock
and drand. scripts/recovery_check.sh opens a time_only and a time_and_key
fixture of format 3 with it and compares what it recovers; scripts/check.sh
runs it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
