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Password protected archive can be opened with WinZip but not 7-Zip #418
Description
Created a password protected archive on Win 10 using the 2.8.9 assets minizip-windows.zip
I can extract the archive with WinZip but not 7-zip
The files are added one at a time to the archive using the -a -p -s options.
Activity
nmoinvaz commentedon Sep 17, 2019
Can you please let me know what commands you used to create the archive?
t0034514 commentedon Sep 18, 2019
Something like:
minizip.exe -a -p zzzzzz -s test.zip document.txt
(I've also created a discussion on the 7-zip source forge site: https://sourceforge.net/p/sevenzip/discussion/45797/thread/03aa2baf72/
nmoinvaz commentedon Sep 18, 2019
When I use minizip.exe in minizip-window.zip to zip up the document.txt that you provided that contains "test" - the archive is extractable with 7-Zip 19.02 (alpha). I'm not sure what you are doing to get it to create the bad archive. I'm using the same arguments as above.
t0034514 commentedon Sep 19, 2019
Try this,
create an archive and use the -o option to ensure it is empty
minizip.exe -o test.zip
then add a file
minizip.exe -a -p zzzzzz -s test.zip document.txt
I cannot see the added file with 7-zip
If I just do the second step (adding the file) with out the first (overwriting) then it works.
t0034514 commentedon Sep 19, 2019
Actually the -p -s options are a red herring
minizip.exe -o test.zip
minizip.exe -a test.zip document.txt
is enough to fail.
Fixed appending files to tiny zip. #418
nmoinvaz commentedon Sep 29, 2019
This is fixed now in the
devbranch. Thanks for reporting it.Fixed appending files to tiny zip. #418