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howto develop a application to open a password-protected powerpoint file?

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Kevin Law

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Jun 18, 2003, 2:05:05 PM6/18/03
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howto develop a application to open a password-protected powerpoint file?


B

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Jun 18, 2003, 3:10:01 PM6/18/03
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So, let me see if I understand your question. You want me to help you get
around my security, right?

What was your checking account number and PIN again?

B

"Kevin Law" <lu...@21cn.com> wrote in message
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Michael Koerner

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Jun 18, 2003, 3:09:52 PM6/18/03
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If you loose your password, your sol

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                          Michael Koerner [MS PPT MVP]
 
 
"Kevin Law" <lu...@21cn.com> wrote in message news:O$4IoQcND...@TK2MSFTNGP11.phx.gbl...

Nitris

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Jun 18, 2003, 5:29:45 PM6/18/03
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To top it off his last name is LAW

"Kevin Law" <lu...@21cn.com> wrote in message
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Kevin Law

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Jun 19, 2003, 5:42:47 AM6/19/03
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It's a software development problem.

"Kevin Law" <lu...@21cn.com> 写入消息
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Shyam

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Jun 19, 2003, 6:57:14 AM6/19/03
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Kevin,
Are you asking how to open a password protected presentation with VBA if you
know the password or are you asking how to hack the presentation?

Regards
Shyam Pillai

"Kevin Law" <lu...@21cn.com> wrote in message

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Mike Fried [MS]

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Jun 19, 2003, 4:32:19 PM6/19/03
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"Kevin Law" wrote:
>> howto develop a application to open a password-protected powerpoint file?

"Michael Koerner" wrote:
> If you loose your password, your sol

True.

However, if you're not asking about the case where you lose a password, just
how to open a PPT which is encrypted with a password, you can do that using
the PPT Object Model, although you will still be asked for the password with
a dialog.

Documentation on opening PPT files via the OM is here:
http://msdn.microsoft.com/library/en-us/vbapp10/html/ppmthopen.asp?frame=true

If you want to set a password on a PPT with the OM, then you can do that
with the documentation here:
http://msdn.microsoft.com/library/en-us/vbapp10/html/ppproPassword.asp?frame=true

And the encryption algorithm to use can be set here:
http://msdn.microsoft.com/library/en-us/vbapp10/html/ppproPasswordEncryptionAlgorithm.asp?frame=true

-Mike Fried
PowerPoint Development Team

Please do not send email directly to this alias. This alias is for newsgroup
purposes only.
This posting is provided "AS IS" with no warranties, and confers no rights.


Michael Koerner

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Jun 19, 2003, 8:29:13 PM6/19/03
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Will have to keep these tucked away. thanks

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                          Michael Koerner [MS PPT MVP]
 
 

Kevin Law

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Jun 21, 2003, 3:13:58 PM6/21/03
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How to using a PPT Object Model to open a password-protected powerpoint file
and without the dialog that asked for the password.


Mike Fried [MS]

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Jun 25, 2003, 6:57:36 AM6/25/03
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"Kevin Law" wrote:
> How to using a PPT Object Model to open a password-protected
> powerpoint file and without the dialog that asked for the password.

The OM, to my knowledge, doesn't have a method which lets you try to open a
file with a password which wasn't entered into the password dialog by the
user. This makes sense to me to not have such a method. My reasoning is
below.

Imagine that there was an Open( FileName, PassWord ) call. You could use VBA
to write a macro to playback a dictionary of passwords to open the password
protected file. In the span of a few seconds, the computer could attempt to
open that file with potentially thousands of passwords. Not having such a
method helps to prevent this kind of attack from being automated.

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