The current `apksigner.jar` in MobSF does not support v3.1 signatures, leading to incorrect feedback on APK signatures. The user requests an update to `apksigner.jar` to add support for v3.1 signatures.
**Is your feature request related to a problem? Please describe.** Some binaries are signed with v3.1 signature which isn't supported by the current version of apksigner.jar **Describe the solution you'd like** Would be nice to update the current apksigner.jar and add support for v3.1 to prevent having false feedback on the signature of an apk (so we get a key of size 1024 instead of 4096). As far as I tried playing with it seems not much changes are required: - First of all we have to change the jar used by installing a newer version of the build tools (I have v34.0.0 when testing locally). - Then the main change required is the result parser in cert_analysis.py: <img width="1412" alt="Image" src="https://github.com/user-attachments/assets/ea1cdbbf-8640-4c57-a5c3-05d668684133" /> - Finally we cascade theses changes in the functions that uses this method: <img width="1381" alt="Image" src="https://github.com/user-attachments/assets/b6ae8c28-4717-4194-97f5-fb64f4b2f5f1" /> <img width=