Re: NTBackup BKS file compressibility
An encrypted file should look like random data. ie there will be no
patterns, or repeating data. I have not actually tried compressing one,
but compression always works the fact that patterns repeat. It should
therefore be expected that any compression of an encrypted file will be
insignificant.
Michael
.
Relevant Pages
- Re: Reducing File Size
... A file with random data. ... Generally the worst for compression. ... and the WinZip file was 23.1 ... patterns, whereas fairly organized stuff has lots of patterns, so gets ...
(microsoft.public.excel) - Re: Reducing File Size
... A file with random data. ... Generally the worst for compression. ... and the WinZip file was 23.1 ... patterns, whereas fairly organized stuff has lots of patterns, so gets ...
(microsoft.public.excel) - [Full-disclosure] a couple of notes on Neal Krawetz image forensics presentation
... presentation by Neal Krawetz on image forensics: ... way simply by measuring how each compression unit (with JPEG, ... acknowledge that observed patterns do not necessarily depend on the number ... This means that a region where a contrast between objects ...
(Full-Disclosure) - Re: increase in information represented by DNA
... information inasmuch as one set of variables intrinsic to the organism ... higher fitness in the current environment? ... single number representing the file size, but only if the compression ... contains some random data, which all genomes do. ...
(talk.origins) - Re: RFD: comp.compression.random
... This is a formal Request for Discussion for the creation of the ... unmoderated newsgroup comp.compression.random. ... due to an increasing amount of discussion related to random data ... compression and or questions regarding patents about those. ...
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