[DVIPDFMx] Encrypting PDFs without user input.

[Michael Joyner]

On Sat, Feb 19, 2011 at 6:08 PM, Michael Joyner <mjoyner at vbservices.net>wrote:

>
>
> On Sat, Feb 19, 2011 at 5:48 PM, Jin-Hwan Cho <jinhwan.cho at gmail.com>wrote:
>
>> Hi, Joyner.
>>
>> On Feb 17, 2011, at 12:53 PM, Michael Joyner wrote:
>>
>> I was trying to encrypt some PDF's with xdvipdfmx via xetex, but
>> discovered that it it hangs waiting for user input for the passwords ... Is
>> there a way to specify the passwords either by a file or on the command
>> line?
>>
>> No way as I remember.
>>
>
> That bites.
>
>>
>> I am trying to do this in a batch process without user interaction
>> required.
>>
>>
>> It's quite easy to add the feature you want, but I wonder if the author of
>> xetex agrees or not.
>> If you are able to write a small piece of C code and to compile it by
>> yourself, then try to modify
>> the function pdf_enc_set_passwd() in pdfencrypt.c.
>>
>
>
>>
>> I will try to discuss this topic with the author of xetex.
>>
>
> Hope to hear good results back. :)
>
>
>> Which way is your favorite? New command line option, external file, or
>> \special?
>>
>
> I think via \special would be the least intrusive to any work chain. One
> can always \include or \input the \specials when needed, or leave the
> include file empty when encryption is not needed. (Or even get fancy with an
> ifthen package)
>
> Maybe consider having a \special{Enrypt:True, OwnerPassword=BLAH,
> UserPassowrd=BLAH, OTHER encryption options) type setup that can be directly
> put into the latex file ?
>
>
>
Any feedback on this yet?
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