feat: derive product entropy from rootEntropySource (RFC-7)#205
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Will fix codecs and then LGTM |
…pySource (RFC-7) Wire the RFC-0007 `rootEntropySource` through the SSO handshake so a host can serve `host_derive_entropy` deterministically without holding the raw root account secret. - host-papp: append `rootEntropySource` ([u8; 32]) to the `HandshakeSuccessV2` body (258 bytes; null for older peers). This revision is not yet pinned in the Mobile SSO spec (latest defined is v0.2.2, kept as `HandshakeSuccessV2_v022`). Thread it through the success state and persist it in `userSecretRepository` as `Option(Bytes(32))`, exposed via `papp.secrets`. - host-container: add `deriveProductEntropyFromSource(rootEntropySource, productId, key)` (layers 2-3); `deriveProductEntropy` now delegates to it. Refs #204.
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Main (0.8.7) had independently absorbed nearly all of this branch's work via PRs #178/#202/#205/#206/#212/#215/#216, with newer/cleaner versions. Conflict resolution (38 files): - package.json (x14), package-lock.json, CHANGELOG.md, migration doc: took main (newer versions, canonical release history). Dropped the unused `verifiablejs` dep. - All SSO V2, statement-store, handoff-service, and host-chat *impl* files: took main — strictly newer (ECDH session-key derivation #206, RFC-7 entropy #205, statement-store fix #215). The branch's parallel May implementations are superseded. - watchIdentity series: already identical in main (no real conflict). - Kept BRANCH version for two files where it is genuinely ahead: * identity/rpcAdapter.ts — defensive snake_case/camelCase Resources decode (fixes "Unknown user" regression on V2 runtime); a clean superset of main's version. * host-chat/codec/attachment.spec.ts — extra blurhash-thumbnail and NodeEndpoint round-trip tests against a byte-identical codec impl. Verified: build, typecheck, lint (0 errors), 679/679 tests pass.
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Wire the RFC-0007
rootEntropySourcethrough the SSO handshake so a host can servehost_derive_entropydeterministically without holding the raw root account secret.rootEntropySource([u8; 32]) to theHandshakeSuccessV2body (258 bytes;nullfor older peers). This revision is not yet pinned in the Mobile SSO spec (latest defined is v0.2.2, kept asHandshakeSuccessV2_v022). Thread it through the success state and persist it inuserSecretRepositoryasOption(Bytes(32)), exposed viapapp.secrets.deriveProductEntropyFromSource(rootEntropySource, productId, key)(RFC-7 layers 2–3);deriveProductEntropynow delegates to it.Closes #204.