The commonly used Archive::Zip module does not support zip encryption:
The Archive::Zip module does not currently create or extract encrypted members.
Besides the original, and according to wikipedia, seriously flawed PKZIP encryption algorithm, there are apparently differ implementations of zip file encryption:
I'm unaware of any Perl interfaces to these implementations.
There are a number of good alternatives to the above, try to search cpan or monastery.
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Rather than using zip's (as noted above, poor) encryption you could use something like Mail::GnuPG and gpg to encrypt the zip'd file after the fact instead.
The cake is a lie.
The cake is a lie.
The cake is a lie.
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