• "Matthew Wilson" <matthew-hat -stlsoft-dot.-org> Nov 12 2003
• "Walter" <walter digitalmars.com> Nov 13 2003
• "Matthew Wilson" <matthew-hat -stlsoft-dot.-org> Nov 13 2003
• "Walter" <walter digitalmars.com> Nov 13 2003

"Matthew Wilson" <matthew-hat -stlsoft-dot.-org> writes:

Pardon if it's a dumb question, but is it possible to

1. Use the new D zip module to read files made with WinZip
2. To write files in WinZip form

Also, can the D zip module apply Winzip compatible, or other, password
encryption.

I know many zip formats share a commonality somewhere deep, which is why
WinZip can open several kinds, but I cannot remember the details.

"Walter" <walter digitalmars.com> writes:

"Matthew Wilson" <matthew-hat -stlsoft-dot.-org> wrote in message
news:boulvk$1d04$2 digitaldaemon.com...
 Pardon if it's a dumb question, but is it possible to

 1. Use the new D zip module to read files made with WinZip


Yes. (as long as you stick with the 'deflate' compression method, which is
the default, and do not use encryption, multi-disk zips, etc.)

 2. To write files in WinZip form


Yes.

 Also, can the D zip module apply Winzip compatible, or other, password
 encryption.


Password encryption is not supported. It could be added if there's a lot of
interest in it. But anyone using it should know that there are numerous
*effective* zip password crackers out there. Zip password encryption will
not stop anyone capable of using google.

 I know many zip formats share a commonality somewhere deep, which is why
 WinZip can open several kinds, but I cannot remember the details.


There are older zip formats supported by the comprehensive zip programs, but
I doubt many care about them. If I'm wrong, support for it could be added.

"Matthew Wilson" <matthew-hat -stlsoft-dot.-org> writes:

 "Matthew Wilson" <matthew-hat -stlsoft-dot.-org> wrote in message
 news:boulvk$1d04$2 digitaldaemon.com...
 Pardon if it's a dumb question, but is it possible to

 1. Use the new D zip module to read files made with WinZip


 Yes. (as long as you stick with the 'deflate' compression method, which is
 the default, and do not use encryption, multi-disk zips, etc.)


Cool

 2. To write files in WinZip form


 Yes.


Cool

 Also, can the D zip module apply Winzip compatible, or other, password
 encryption.


 Password encryption is not supported. It could be added if there's a lot


 interest in it. But anyone using it should know that there are numerous
 *effective* zip password crackers out there. Zip password encryption will
 not stop anyone capable of using google.



Yes, please. Let's have it. I promise to donate the tool I write if we get
password support. :)

 I know many zip formats share a commonality somewhere deep, which is why
 WinZip can open several kinds, but I cannot remember the details.


 There are older zip formats supported by the comprehensive zip programs,


 I doubt many care about them. If I'm wrong, support for it could be added.


nw.

"Walter" <walter digitalmars.com> writes:

"Matthew Wilson" <matthew-hat -stlsoft-dot.-org> wrote in message
news:bovho3$2oj5$1 digitaldaemon.com...
 Password encryption is not supported. It could be added if there's a lot


 interest in it. But anyone using it should know that there are numerous
 *effective* zip password crackers out there. Zip password encryption




 not stop anyone capable of using google.


 password support. :)


May I ask what the application for password support is? Maybe I can talk you
out of it <g>.