How secure is password protected ZIP file?
About Security
Main security methods
are 128-bit AES and 256-bit AES. These numbers refer to the size of the
encryption key that is used to encrypt the data. 256-bit AES is stronger than
128-bit AES, but both of them can provide significantly greater security. A minor
advantage of 128-bit AES over the 256-bit AES is that it is slightly faster,
that is, it takes less time to encrypt or decrypt a file. This would likely go
without notice, unless you were creating Zip files in which you included many
thousands of files being encrypted while being added.
Security Level
The security of your
data depends not only on the strength of the encryption method but also on the
strength of your password, including factors such as length and composition of
the password. Security also depends on the measures you take to ensure that
your password is not disclosed to unauthorized third parties.
So if u are used more
number with mixed composition, then password cracking get very difficult.
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