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Re: [Fwd: Re: Question - Adobe Products - Acrobat]



On Tue, 30 Jul 1996, Udi Finkelstein wrote:

>On Tue, 30 Jul 1996 19:37:02 +0300 (IDT), Meir Litmanovich
><mlitmano@sunbeam.cs.biu.ac.il> wrote:

>>Hmm ! I think I saw it at Infomagic CDROMs .As I understand Ira 
>>also .May be it's secret ? Or in Adobe the right hand doesn't 
>>know what left hand does ?  Anyway ,try Ira's ftp , and I'll try this
>>night my copy and we'll see what's going on .

>You might have seen XPDF which is a freely redistributable PDF viewer. I'm not
>sure it can view all PDF types (yes, there are a few versions and types of PDF
>files).

>Check:
>http://www.contrib.andrew.cmu.edu/usr/dn0o/xpdf/xpdf.html

  It seems there is some encryption information that Adobe is
withholding.  Here is what I get when I run xpdf against a sample file

-----------------------
> xpdf 2864iman.pdf 

xpdf version 0.5
Copyright  1996 Derek B. Noonburg
Error (0): PDF file is encrypted and cannot be displayed
Error (0): *    Please send email to devsup-person@adobe.com and ask
Error (0): *    them to prove that PDF is truly an open standard by
Error (0): *    releasing the decryption specs to developers.  Also,
Error (0): *    please send email to the person responsible for this
Error (0): *    file (webmaster@... might be a good place) and ask
Error (0): *    them to stop using encrypted PDF files.
-----------------------

  On other files, I get

-----------------------
>xpdf 1450.pdf 

xpdf version 0.5
Copyright  1996 Derek B. Noonburg
Error (0): Kid object (page 1) is wrong type (dictionary)
Error (0): Couldn't read page catalog
-----------------------

and no pictures as well

  Needless to say, Adobe Acrobat has no problem handling the files.

  But when it works, xpdf works quite well

alex


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