Common Data Security Architecture (CDSA) White Paper

Appendix G 127
ZIP format
8 2 bytes Total number of entries in the central dir on this disk
10 2 bytes Total number of entries in the central dir
12 4 bytes Size of the central directory
16 4 bytes Offset of start of central directory with respect to the
starting disk number
20 2 bytes zipfile comment length (c)
22 (c)bytes zipfile comment
compression method: (2 bytes)
0 - The file is stored (no compression)
1 - The file is Shrunk
2 - The file is Reduced with compression factor 1
3 - The file is Reduced with compression factor 2
4 - The file is Reduced with compression factor 3
5 - The file is Reduced with compression factor 4
6 - The file is Imploded
7 - Reserved for Tokenizing compression algorithm
8 - The file is Deflated