Discussion about special ways to protect a PDF

[Contro]

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....

[Ath]

Most PDF editors/writers have options to create protected pdf's, it's usually an option at save-time.

[Contro]

 

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.

 

[Ath]

Getting strange characters from a copy/paste may indicate that the receiving application is not uni-code aware/capable?

[Contro]

Getting strange characters from a copy/paste may indicate that the receiving application is not uni-code aware/capable?

-Ath (September 06, 2013, 04:22 AM)

Ath, So is not a way of protection ?
 

[Curt]

could (easily) be that the pdf's font not is on your pc

[Contro]

could (easily) be that the pdf's font not is on your pc

-Curt (September 06, 2013, 08:21 AM)

How can I solve that ?
 

[tomos]

could (easily) be that the pdf's font not is on your pc

-Curt (September 06, 2013, 08:21 AM)

How can I solve that ?
 

-Contro (September 06, 2013, 08:52 AM)

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

[Contro]

could (easily) be that the pdf's font not is on your pc

-Curt (September 06, 2013, 08:21 AM)

How can I solve that ?
 

-Contro (September 06, 2013, 08:52 AM)

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

-tomos (September 06, 2013, 08:58 AM)

Discussion about special ways to protect a PDF

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]

There is not any special protection system ?. By example that OCR don't go in a PDF.
 

[Ath]

There is not any special protection system ?. By example that OCR don't go in a PDF.
 

-Contro (September 06, 2013, 07:54 PM)

OCR can work off of screenshots, so there is no way to 'prevent' that.

[def]

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]

There is not any special protection system ?. By example that OCR don't go in a PDF.
 

-Contro (September 06, 2013, 07:54 PM)

OCR can work off of screenshots, so there is no way to 'prevent' that.

-Ath (September 07, 2013, 03:12 AM)

Oh damn !!!!!!!. I suppose so.
 

[Contro]

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.

-def (September 07, 2013, 06:38 AM)

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

[def]

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]

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.

-def (September 07, 2013, 10:21 AM)

Running to try.
I will comment
 

[Contro]

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.

 

[def]

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.

 

-Contro (September 07, 2013, 11:29 AM)

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]

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.

 

-Contro (September 07, 2013, 11:29 AM)

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)

-def (September 07, 2013, 11:39 AM)

Running to try