How to accept APK, DEX, and signing integrity together
Yudun technical guide · Engineering principles and practice · English
APK acceptance must treat file contents, signing identity, and release path as one system. A reverse-engineering check or successful installation alone cannot establish release readiness.
Fix the candidate identity
Record build source, version, signing certificate digest, and file digest for every acceptance round.
A rebuild, re-sign, or channel modification creates a new candidate that needs a new record.
- Known build source
- Approved signing identity
- Consistent version and channel
- Reproducible file digest
Observe each package component separately
DEX, resources, manifest data, and native libraries expose different modification surfaces.
Strong handling of one carrier does not prove coverage of another.
Test upgrade and channel behavior
Users often receive an upgrade rather than a clean install. Test supported upgrades, data retention, channel configuration, and critical business paths.
If channel tooling modifies resources or the manifest, include it in the fixed build order.
- Clean install
- In-place upgrade
- Critical paths
- Rollback
Maintain approved versions server-side
Clients can provide version, signing, and integrity signals, but high-risk decisions belong to a server policy with rollout, error handling, and emergency recovery.
Verify the boundary with a real release candidate
Provide the application stack, critical paths, and target system range. Accounts, applications, and project details are handled by the central Yudun platform.