ZIP format

4 4 bytes CRC-32

84 bytes Compressed size

124 bytes Uncompressed size

Central directory:

Offset Length Contents

04 bytes Central file header signature (0x02014b50)

42 bytes Version made by

62 bytes Version needed to extract

82 bytes General purpose bit flag

102 bytes Compression method

122 bytes Last mod file time

142 bytes Last mod file date

164 bytes CRC-32

204 bytes Compressed size

244 bytes Uncompressed size

282 bytes Filename length (f)

302 bytes Extra field length (e)

322 bytes File comment length (c)

342 bytes Disk number start

362 bytes Internal file attributes

384 bytes External file attributes

424 bytes Relative offset of local header

46(f)bytes Filename (e)bytes Extra field

(c)bytes File comment End of central directory record: Offset Length Contents

04 bytes End of central dir signature (0x06054b50)

42 bytes Number of this disk

62 bytes Number of the disk with the start of the central directory

126

Appendix G