MAC OSX: How to unzip password protected .zip file
I need to unzip a .zip file which is password protected.
I am able to unzip the .zip file using a windows PC with 7zip.
I tried several tools Keka, iZIP, unarchiver ... and got always an answer like this "...wrong password". But I proofed the password with the windows PC.
So I tried it with commandline, in this way:
unzip -P password my.zip -d my_folderBut I see the following error:
...unsupported compression method 99So how can I unzip this file under MAC OS X?
65 Answers
unsupported compression method 99Means the compression algorithm (99 which is AES encryption) isn't supported.
For OSX the only program supporting this I know of it p7zip (Available with brew and other package managers too).
8Keka for Mac os really works perfect with zip protected files (error 1 type or unsupporter compression method 99 in Terminal) > Keka prompt for password then you must fill in something with any letters (eg DEMO), then it does some work, then it tells you it failed...
BUT it did NOT : check it out, your unzipped map is just right there besides your zip file. :-)
I used 7-Zip 21.02 alpha (2021-05-06) for Mac console (7z2102-mac.tar.xz), downloaded from the 7-zip.org download page, and it worked just fine with AES password protected zip files on Mac with Catalina. Do a -h instead of guessing how to use it.
If you (like me) are trying to unzip ipa file and gets the similar error.
skipping: Payload/ unsupported compression method 99
Check this project it's worked for me.
It's all about Apple's LZFSE compression:
I had exactly the same issue with a zipped pdf file (pwd protected) from a utilities provider. Tried unsuccessfully with Terminal via command line. In the end I downloaded Keka for Mac, and when I tried to unzip the file using Keka it prompted me for the password, and opened the file! Hope this saves someone else some time.
