Commit Graph
13 Commits
Author SHA1 Message Date
Enginex0 9dc8ec1530 fix(native-certgen): address Phase 0-1 validation findings
EC keygen now returns proper SPKI DER instead of raw point bytes.
RSA keygen uses caller-supplied exponent via new_with_exp() and
validates key size to 2048/3072/4096. Keybox parser extracts leaf
subject DN (not issuer). Added AttestKey=7 to KeyPurpose. Realigned
error variants with spec.
2026-03-09 15:21:33 +01:00
Enginex0 5fcd4ab7b6 feat(native-certgen): implement keybox DER certificate chain parser
Splits concatenated DER cert chains into individual certificates,
extracts leaf issuer DN and notAfter via x509-cert crate. Handles
multi-byte DER length encoding (0x81-0x84).
2026-03-09 15:09:29 +01:00
Enginex0 30d5188c69 feat(native-certgen): scaffold Rust crate with foundation types and keygen
Cargo.toml with 16 dependencies per build spec, error types with
From impls for all upstream error types, CertGenParams mapping the
full JNI config contract, EC/RSA key generation via ring and rsa crates.

Compiles clean for aarch64-linux-android via cargo-ndk.
2026-03-09 15:05:25 +01:00
Enginex0 770a4f0134 Derive boot and vendor patch levels from system prop when system=prop
TrickyAddon fetches Pixel bulletin dates for boot/vendor but system=prop
resolves to the real device prop, creating a cross-component date mismatch
on non-Pixel devices. Force all three through the same prop resolution path.
2026-02-07 00:47:53 +01:00
Enginex0 bb28a8d30c Rate-limit per-UID hardware keygen and harden importKey eviction
Sliding window limits each UID to 2 hardware generateKey calls per
30s burst window with max 2 concurrent. Overflow falls back to
software cert generation.

importKey post-hook retains patched chains instead of full eviction,
preventing detectors from using generate-then-import to bypass
attestation patching. getKeyEntry serves retained chains for imported
keys that overwrote attested aliases.
2026-02-07 00:47:47 +01:00
Enginex0 3e2aaa2ff0 Cap interceptable binder payload size at 256KB
Prevents thread starvation from flood attacks targeting the
binder interceptor with oversized payloads.
2026-02-07 00:47:42 +01:00
Enginex0 ff88543c98 Add file-level locking to prevent race conditions in key persistence
Per-key ReentrantLock prevents concurrent writes to same key file
2026-02-07 00:47:36 +01:00
Enginex0 c99a2ab302 Reject oversized aliases to prevent binder buffer exhaustion
MAX_ALIAS_LENGTH (256KB) with 4x safety margin for transaction overhead
2026-02-07 00:47:31 +01:00
Enginex0 b33e1ae3ac fix(pki): strip HTML comments from PEM blocks before parsing
Some upstream keybox sources inject HTML comments inside PEM
certificate blocks. BouncyCastle's PEMParser chokes on these
non-base64 lines, silently failing to load the keybox.

Filter lines starting with <!-- in trimLines() before the content
reaches the PEM parser.
2026-02-07 00:47:26 +01:00
Enginex0 fc64789dc3 fix(config): prevent FileObserver NPE on config file deletion
When a config file is deleted, the event handler sets file=null but
then force-unwraps it with file!! in the when block, crashing the
FileObserver thread. All subsequent config change notifications are
silently lost.

Replace force-unwrap with safe call, log a warning on deletion.
2026-02-07 00:47:20 +01:00
Enginex0 945f3cac79 Integrate key persistence with interceptors
Save keys on generation, restore on daemon startup, delete on cleanup.
Re-persist when cert chain updates via updateSubcomponents.
2026-02-07 00:47:16 +01:00
Enginex0 4e50a70366 Add generated key persistence layer
Persist GENERATE-mode keys to disk so they survive daemon restarts.
Binary format with version header, atomic write via tmp+rename.
2026-02-07 00:47:10 +01:00
Enginex0 8b00d7985f feat(module): add supervisor daemon with leak-safe restart and lifecycle scripts
Fork-based supervisor ensures the interceptor process survives crashes.
pingBinder() liveness check on pre-transact returns DEAD_OBJECT to
callers when interceptor is down, preventing real TEE state from leaking
during the restart window.

action.sh clears persistent key storage via KSU Action button.
uninstall.sh kills daemon processes and removes module artifacts while
preserving target.txt and keybox configuration.
2026-02-07 00:47:04 +01:00