Will keep it in mind - actually must write some of these things down as this is for a future change! I could see no real reason not to copy an encrypted file (still encrypted) as long as made no changes (except to file offsets). Russell Peters http://www.users.bigpond.com/russellpeters/delphizip.html ----- Original Message ----- From: "James Turner" <james.d.h.turner@xxxxxxxxxxxx> To: <delphizip@xxxxxxxxxxxxx> Sent: Thursday, November 21, 2002 10:39 AM Subject: [delphizip] Copying encrypted files > Russell, > > Just a quick warning. When copying encrypted files, it might be tempting to remove the data descriptor, if present, (and clear the descriptor flag). Unfortunately, the way encryption is implemented, the file will become unreadable. I was caught out by this !! > > -- James Turner > www.skaro.net > > > >