Thanks a lot!!!
1) ZIP files use symmetric-key algorithm, AES encryption.
2) Sometimes we have a part of a single file. For Example some HTML files start with:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
or PNG files start with hex code:
89 50 4E 47 0D 0A 1A 0A
...
reza55n
Last Activity: Jun 25 '14, 08:43 PM
Joined: Jun 23 '14
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reza55n started a topic How safe are encrypted zip files? What if we have the unzipped form of a zipped file?in SecurityHow safe are encrypted zip files? What if we have the unzipped form of a zipped file?
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I know that if we use a complicated password for zip files that has more than 8 characters, it's quite safe and can't be cracked easily...
For example, for an 8-digits complicated password (containing ABC,abc,123,!@# ), it takes 83.5 days for a supercomputer to test all combinations, and 22 years for a 9-digit!!!!)
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But in an example, we have an encrypted zip file that contains multiple files, and we have...
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