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Author Topic: Discussion about special ways to protect a PDF  (Read 6139 times)

Contro

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Discussion about special ways to protect a PDF
« on: September 05, 2013, 08:40:00 PM »
Discussion about special ways to protect a PDF

Some time ago I tried to copy/paste a part of a PDF but when paste only strange symbols appear. .....

Don't seems the habitual user's protections that make no possible to copy/paste. There is not selection of text or images.

Well. What are all the rest of protection I can apply to protect a pdf ?

How can i convert a searchable PDF in a not searchable PDF ?
Or convert in images PDF ?

Best Regards

Create a non editable PDF . I suppose tha protection is override with OCR methods....



« Last Edit: September 05, 2013, 08:52:46 PM by Contro »

Ath

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Re: Discussion about special ways to protect a PDF
« Reply #1 on: September 06, 2013, 02:12:47 AM »
Most PDF editors/writers have options to create protected pdf's, it's usually an option at save-time.

Contro

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Re: Discussion about special ways to protect a PDF
« Reply #2 on: September 06, 2013, 04:05:09 AM »
 :-*

Hello Ath. The option i comment above was an error or the PDF ?
I refer to the possibility of a PDF where you can copy/paste , but when you paste you only see strange symbols.


I have seen the option save as an image, but we must be careful with that option because in the most pdf editors if you mark for the ocassion continues in the next printing. So we don't must forget unmark again.

 :P

Ath

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Re: Discussion about special ways to protect a PDF
« Reply #3 on: September 06, 2013, 04:22:22 AM »
Getting strange characters from a copy/paste may indicate that the receiving application is not uni-code aware/capable?

Contro

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Re: Discussion about special ways to protect a PDF
« Reply #4 on: September 06, 2013, 08:12:08 AM »
Getting strange characters from a copy/paste may indicate that the receiving application is not uni-code aware/capable?

Ath, So is not a way of protection ?
 :-\

Curt

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Re: Discussion about special ways to protect a PDF
« Reply #5 on: September 06, 2013, 08:21:29 AM »
could (easily) be that the pdf's font not is on your pc

Contro

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Re: Discussion about special ways to protect a PDF
« Reply #6 on: September 06, 2013, 08:52:38 AM »
could (easily) be that the pdf's font not is on your pc


How can I solve that ?
 :huh:

tomos

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Re: Discussion about special ways to protect a PDF
« Reply #7 on: September 06, 2013, 08:58:28 AM »
could (easily) be that the pdf's font not is on your pc


How can I solve that ?
 :huh:

can you link to the PDF, or send it to someone else per email - to check it?
Tom

Contro

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Re: Discussion about special ways to protect a PDF
« Reply #8 on: September 06, 2013, 09:24:36 AM »
could (easily) be that the pdf's font not is on your pc


How can I solve that ?
 :huh:

can you link to the PDF, or send it to someone else per email - to check it?


http://img182.imageshack.us/img182/8628/sorprendidolp0.gif
Discussion about special ways to protect a PDF

http://img245.imageshack.us/img245/1599/winkho2.gif
Discussion about special ways to protect a PDF


It was some time ago. I don't remeber where is that file.
Sorry
But sure happen !!!!!!!!!



Contro

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Re: Discussion about special ways to protect a PDF
« Reply #9 on: September 06, 2013, 07:54:05 PM »
There is not any special protection system ?. By example that OCR don't go in a PDF.
 :-[

Ath

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Re: Discussion about special ways to protect a PDF
« Reply #10 on: September 07, 2013, 03:12:29 AM »
There is not any special protection system ?. By example that OCR don't go in a PDF.
 :-[
OCR can work off of screenshots, so there is no way to 'prevent' that.

def

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Re: Discussion about special ways to protect a PDF
« Reply #11 on: September 07, 2013, 06:38:24 AM »
If you want to protect a PDF, you can try a DRM solution. DRM makes copying and/or editing a PDF somewhat harder, and some DRM implementations are even intended to prevent screenshots (so no OCR possible unless someone cracks/removes the DRM).

But I'm not sure from this thread if protecting a PDF is actually your goal.

Contro

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Re: Discussion about special ways to protect a PDF
« Reply #12 on: September 07, 2013, 07:47:53 AM »
There is not any special protection system ?. By example that OCR don't go in a PDF.
 :-[
OCR can work off of screenshots, so there is no way to 'prevent' that.

Oh damn !!!!!!!. I suppose so.
 >:(

Contro

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Re: Discussion about special ways to protect a PDF
« Reply #13 on: September 07, 2013, 07:49:15 AM »
If you want to protect a PDF, you can try a DRM solution. DRM makes copying and/or editing a PDF somewhat harder, and some DRM implementations are even intended to prevent screenshots (so no OCR possible unless someone cracks/removes the DRM).

But I'm not sure from this thread if protecting a PDF is actually your goal.

How is that ?
Running to the browser for DRM.
What the meaning ?
 :o

def

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Re: Discussion about special ways to protect a PDF
« Reply #14 on: September 07, 2013, 10:21:30 AM »
I mean "Digital Rights Management" (DRM), i.e. copy protection. Many e-book vendors use it to protect books (although the term DRM is not restricted to e-books). There are several (incompatible) DRM schemes. Essentially, the PDF is encrypted and can only be viewed if the PDF creator allows it. To open a DRM protected PDF one needs a special PDF reader application (usually provided free of charge by the vendor that sells the DRM solution).

2 PDF DRM solutions (both prevent screenshots of a protected PDF):

Drumlin Security (free of charge, at least the last time I looked)
LockLizard (very expensive)

No idea if this is what you're looking for.

Contro

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Re: Discussion about special ways to protect a PDF
« Reply #15 on: September 07, 2013, 11:07:51 AM »
I mean "Digital Rights Management" (DRM), i.e. copy protection. Many e-book vendors use it to protect books (although the term DRM is not restricted to e-books). There are several (incompatible) DRM schemes. Essentially, the PDF is encrypted and can only be viewed if the PDF creator allows it. To open a DRM protected PDF one needs a special PDF reader application (usually provided free of charge by the vendor that sells the DRM solution).

2 PDF DRM solutions (both prevent screenshots of a protected PDF):

Drumlin Security (free of charge, at least the last time I looked)
LockLizard (very expensive)

No idea if this is what you're looking for.

Running to try.
I will comment
 ;D

Contro

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Re: Discussion about special ways to protect a PDF
« Reply #16 on: September 07, 2013, 11:29:26 AM »
Javelin seems to be a DRM files reader, not an utility to produce super protected pdf files.
 :-[

Drumlin seems also a reader. Are a method to read pdf files when you have the code, but are not the program to protect the pdf o create the pdf protected.

 :-[
« Last Edit: September 07, 2013, 11:35:11 AM by Contro »

def

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Re: Discussion about special ways to protect a PDF
« Reply #17 on: September 07, 2013, 11:39:10 AM »
Javelin seems to be a DRM files reader, not an utility to produce super protected pdf files.
 :-[

Drumlin seems also a reader. Are a method to read pdf files when you have the code, but are not the program to protect the pdf o create the pdf protected.

 :-[

Drumlin ist exactly the software that you need: "The secure versions of PDF files are created using our Drumlinsoftware, which is also free." (cited from http://www.drumlinsecurity.com/)

Download here: http://www.drumlinse...y.com/downloads.html

See also here: http://www.drumlinsecurity.com/drm.html (how this DRM stuff works)

Contro

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Re: Discussion about special ways to protect a PDF
« Reply #18 on: September 07, 2013, 02:51:35 PM »
Javelin seems to be a DRM files reader, not an utility to produce super protected pdf files.
 :-[

Drumlin seems also a reader. Are a method to read pdf files when you have the code, but are not the program to protect the pdf o create the pdf protected.

 :-[

Drumlin ist exactly the software that you need: "The secure versions of PDF files are created using our Drumlinsoftware, which is also free." (cited from http://www.drumlinsecurity.com/)

Download here: http://www.drumlinse...y.com/downloads.html

See also here: http://www.drumlinsecurity.com/drm.html (how this DRM stuff works)

Running to try
 ;D