Kjell Tore Guttormsen f4e89d2885 feat(egress): decode-rescan feeds base64 plaintext to secret-egress (review MINOR)

Output gate step 3 now runs scan_secret_egress over every decoded base64
blob's plaintext, not only scan_lexicon. A base64-wrapped credential that
formerly vanished (decode fed the lexicon, which has no secret patterns)
now surfaces as decoded:egress:* carrying the blob offset. Evidence stays
length-only, so the decoded finding never leaks the secret value.

Hex-wrapped secrets remain a documented honest-limit (entropy exposes
decoded plaintext for base64 only). README honest-limits + CLAUDE.md
Kontekst updated; 3 tests added (347 passed, was 344).

2026-07-15 07:11:29 +02:00

2.3 KiB

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llm-ingestion-pipeline-security

Kontekst

Gjenbrukbar, minimal defensiv layer for LLM ingestion-pipelines (write-time), til forskjell fra query-time chatbot-guardrails. Pakker det arkitektoniske kontraktet — sanitize → fence → tool-less karantenert transform → per-stadium capability-isolasjon → scan output før commit → fail-secure — som komponerbar, framework-agnostisk kode.

Referanse-implementasjon: claude-code-llm-wiki Stage B (tools/wiki_ingest/). Lexikon-seed: injection-patterns.mjs fra llm-security-pluginen.

Repoet er på v0.2 (alpha): stdlib-kjernen er bygget og testet (12 moduler + topp-nivå wiring, showcase + korpus), inkl. OKF-adapter og aktivt-innhold- detektor (EchoLeak-klassen) i output-gaten. Mode-b import_bundle skanner reserverte strukturfiler (index.md/log.md) i mottatte bundles i stedet for å path-avvise dem; upload-front-end beholder shadow-reject (allow_reserved=False). Output-gatens decode-and-rescan mater dekodet base64-klartekst gjennom BÅDE lexicon og secret-egress (LLM02), så en base64-innpakket credential fanges som decoded:egress:* i stedet for å forsvinne; hex-innpakket er en dokumentert restgap (entropy eksponerer kun base64-klartekst). Start med docs/BRIEF.md for design, README.md for bruk, docs/PLAN.md for byggerekkefølgen.

Konvensjoner

Norsk for dialog og planer, engelsk for kode og innhold (repoet er publisert).
Ingen GitHub — kun Forgejo (git.fromaitochitta.com).
Remote satt: offentlig open/-speil på Forgejo; push hver commit (durabelt autorisert).
Minimal-dependency: stdlib-first kjerne; ML/judge-detektorer bak extras.

Communication patterns

Linking to local files

When pointing to local files in responses, always use markdown link syntax with a descriptive name:

Use [Human-friendly name](file:///absolute/path) — never bare file:///... URLs or autolinks <file://...>.
Always use absolute paths. Never ~/ or relative paths.
For multiple files, render as a bullet list of named markdown links.

Why: bare file:// URLs only render the first as clickable across multiple lines. Named markdown links make each entry independently clickable and look cleaner.

Example:

Brief