.SF File Extension
Minecraft JAR Signature File
| Developer | Mojang |
| Popularity |
4.1 | 32 Votes |
What is an SF file?
More Information
The CODESIGN.SF file is also saved with the file CODESIGN.RSA. Neither file should be modified or the game may not function properly. CODESIGN.SF was previously named MOJANG_C.SF.
Programs that open or reference SF files
IRCAM Sound File
| Developer | N/A |
| Popularity |
3.4 | 10 Votes |
Sound file format developed by IRCAM, the "Institut de Recherche et Coordination Acoustique/Musique" (from France); used for storing CSound audio samples.
Programs that open SF files
APK Digital Signature
| Developer | |
| Popularity |
2.0 | 1 Vote |
CERT.SF is a digital signature included in an .APK (Android Package) file. It contains a hashed record of the APK file's MANIFEST.MF file. CERT.SF is typically saved alongside files named CERT.RSA and MANIFEST.MF.
More Information
When an Android developer creates an APK file, Android Studio (or whatever app the developer used to create their APK file) creates a META-INF directory in that APK file. This directory contains information used to verify the APK file's contents upon installation on a user's device, to confirm the APK file has not been tampered with between creation and installation.
Notably, META-INF includes the following files:
- MANIFEST.MF: Contains an encoded list of all the files included in the APK file
- CERT.SF: Contains encoded copies of MANIFEST.MF and each section of MANIFEST.MF; used as a digital signature for the app
- CERT.RSA: Contains a digital certificate used to verify CERT.SF
How to open an SF file
CERT.SF is not meant to be opened. Upon app installation, Android references an app's CERT.SF file to confirm the app's contents have not been modified.