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Post by sutomo on Dec 4, 2008 12:38:58 GMT -5
How can I encrypt/add password to a bunch of existing zip files? Do I have to unzip and then re-zip them with password?
Thanks
Sutomo
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Post by Kevin on Dec 4, 2008 13:53:58 GMT -5
The files would have to be unzipped and re-zipped in order to add a password. PKZip 11 can make this easy for you though if you can do it manually. Just open up the archives with PKZip 11 (other versions may have this capability too, that is just the version we have here) and select actions | encrypt. It will ask you for the password and then do all the work of unzipping and re-zipping with the password behind the scenes.
Or you could write a utility using VCLZip to do the same thing if you can't do it manually.
Kevin
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Post by Kevin on Dec 4, 2008 21:01:14 GMT -5
Actually I take back what I said. Assuming the file is not already encrypted (just adding encryption), the data would not likely have to be unzipped. Since encryption takes place after the data is compressed, The data that is already in the archive should be able to be compressed directly. However, the archive itself would have to be re-created since pkzip archives are serial files.
I will add this to the list of features to add to VCLZip in a future version. In the meantime, using PKZip as explained above should work.
Thanks,
Kevin
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Post by Kevin on Jan 25, 2009 9:17:35 GMT -5
We have this working (Encrypting and Decrypting In Place). Soon I will start posting an "under construction" version for registered users to try out which will include new features like this as we get them working. Then at some point it will become an official beta version. Watch the Announcements Board for when this gets uploaded.
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