Password protect existing Zipfiles

new

« Prev
1
Next »

paul
New Member

Posts: 1

Password protect existing Zipfiles May 1, 2007 5:40:56 GMT -5

Quote

Post by paul on May 1, 2007 5:40:56 GMT -5

is it possible to password protect an existing zipfile ?
I am trying this in VCLZip 2.23 but nothing seems to happend
yet if the file is full of jpegs... these will no longer show up as
thumbnails... jpeg error #52
I can still unziptostream without inserting password
good ideas welcome

Kevin
Administrator

Posts: 654

Password protect existing Zipfiles May 1, 2007 11:50:15 GMT -5

Quote

Post by Kevin on May 1, 2007 11:50:15 GMT -5

Hi Paul,

No it is not possible to password protect an existing zip file. Each file in the archive is password protected separately as it is zipped and the encryption is an integral part of the compression operation. The only way to do it is to unzip the files and zip them into a new zip file, setting the password property when you do.

Kevin