Concept

Cabinet (file format)

Summary
Cabinet (or CAB) is an for Microsoft Windows that supports lossless data compression and embedded digital certificates used for maintaining archive integrity. Cabinet files have .cab s and are recognized by their first four bytes (also called their ) MSCF. Cabinet files were known originally as Diamond files. Design A CAB archive can contain up to 65,535 folders (distinct to standard operating system directories), each of which can contain up to 65,535 files for a maximum of 4,294,836,225. Internally, each folder is treated as a single compressed block, which provides more efficient compression than individually compressing each file. Every entry in a folder has to be a file. Due to this structure, it is not possible to store empty folders in CAB archives. The following shows an example a CAB file structure, demonstrating the relationship between folders and files:
  • CAB file ** First folder


** Second folder

How paths should be handled is not spe
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