halkyon/apps/todo/halkyon_todo_server/migrations/migration_registry.txt
Tizian 「ティツィアーン」 aea0c447fc
fix(auth)!: the recovery phrase is proved by a key of its own
A key proof was a signature by the account's signing key, which every
signed-in device keeps in its keyring: whoever could read one, with a
code from its authenticator, set a new password without the password or
the phrase (the second reading's H1). The phrase now proves itself with
an Ed25519 key derived from its bits alone (halkyon_keys'
recoveryProofKeysOf, KDF context hlkrprf1, a sibling of the recovery
key), whose public half every setup, new phrase and account reset sends
and the register keeps (account_password.recoveryProofKey); the device
derives the secret half only while the phrase is typed. An account
without one (none exist outside development) proves no phrase until it
sets a new one; decoys check against a decoy proof key alike.

Migration (module, Learn's and Todo's servers, Learn's device schema):
ALTER TABLE "account_password" ADD COLUMN "recoveryProofKey" bytea;
nullable, so rows made before keep working and no data is touched.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
2026-10-23 14:12:43 +02:00

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### AUTOMATICALLY GENERATED DO NOT MODIFY
###
### This file is generated by Serverpod when creating a migration, do not modify it
### manually. If a collision is detected in this file when doing a code merge, resolve
### the conflict by removing and recreating the conflicting migration.
20261019193547604
20261019201213254-profiles
20261019204122341-deletion-notices
20261020111950710-passwords
20261020125124942-sessions-ended
20261020185752014-recovery-proof-key