2 Commits

Author	SHA1	Message	Date
dillard	4fce893389	Phase 0: repository format with packs, dedup and incremental runs (spike B) ... Content-addressed repository on an IBackend (local implementation): 4 MiB blobs, deflate when it helps, each blob encrypted with its id as associated data, ~32 MiB packs with an encrypted header, one index file per pack, snapshots as encrypted JSON lines written last. Spike B: 390 MiB tree, peak 54 MiB; unchanged run reads nothing; a 1 MiB change in a 300 MiB file uploads one blob; full and partial restore are bit-identical; tampering is detected.	2026-10-01 18:18:38 +02:00
dillard	fee189aec3	Phase 0: skeleton, streaming encryption (spike A) ... Repository skeleton (app id ng_backup, AGPL-3.0-or-later), KeyRing with KDF subkeys, keyed blob ids and Argon2id key wrapping, and StreamCipher (secretstream XChaCha20-Poly1305, framed, bounded memory). Spike A: 1 GiB round trip with memory_limit=64M, peak < 2 MiB, ~160/122 MiB/s; tampering, truncation, wrong key/passphrase are rejected.	2026-10-01 18:15:24 +02:00