OSF file extension - ICZ OriSAFE file
What is osf file? How to open osf files?
File type specification:
The OSF file extension is associated with the OriSAFE an application developed by Czech company called ICZ. The *.osf file stores encrypted data and signed through Microsoft CryptoAPI.
The OriSAFE seems to be obsolete product without support from ICZ OriSAFE.