[pdftex] pdftex-pdfcrypt update

[Hans Hagen]

At 05:22 PM 3/28/01 +0100, Heiko Oberdiek wrote:

...

>But it is a hard job to do it in pdfTeX, because pdfTeX
>provides low level features, where pdf code is directly
>inserted. So _all_ insertions (by \pdfobj, \pdfstartlink, ...)
>have to be scanned to detect strings and streams in order
>to encrypt them.
>
>For example two test files, that are currently not encrypted
>in a correct way:

... 

it may be enough to encrypt compressed streams only (i.e. text and
graphical data), since encripting any dict or descriptive object is a
slowdown and not that useful. 

Hans 
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