The block cipher algorithms used in 96Crypt as
described
earlier, do not apply any compressing routine
to the processed data. However, 96Crypt provides an additional optional compressing scheme making
EnCrypted files/FOLDERs even smaller.
Please consider the fact that ALL already compressed files cannot be compressed further.
Some file format are ALREADY compressed with their respective algorithm. Therefore, compressing
them again will lead to an unsignificant size reduction and might even increase their size.
Here's a non exhaustive list of compressed format:
mp2, mp3, ac3, aac, ogg, mpeg, mpg, vob (and all other audio/video compression format)
mov, ra, rm, asf, wma, wmv, avi (compressed codecs)
ppt, pdf, jpg, jpeg, gif.. (and all other photo compression format)
zip, rar, arj, jar, lzh, ace, zoo, gzip, bzip.. (and all other file compression format)
Any compressing scheme, like zip, rar etc.. adds a header to the compressed file. The header has
a fixed length defined by the compressing algorithm. It usually has a small size ranging from 500 byte
to 2kb. When a very small (less than 150 byte) file is ZIPped or RARed, chance are extremely high
to get a lager compressed file, because adding the 500 byte header to a 100 byte file has a 500%
ratio, while adding the same 500 byte header to a 10 000 byte file represents only a 5% ratio.
1. No Compression
When the "1· No Compression" scheme is selected, file/FOLDERs EnCryption will be carried out
without adding any file compression. This makes this process a bit faster than the second one.
1. Add Compression
When selecting the "2· Compression is Active" scheme, a small window setup opens to let you adjust
the compression level from a simple file packing to a maximum compression. However, the maximum
compression level requires an important amount of CPU resources and considerably slows down
the process.