Hi, So I noticed that after sanitising the document there's some sort of encryption on it. What is it for ?

Secondly,
I am trying to batch encrypt a lot of pdf documents after sanitising it using docbleach and I am not able to encrypt it. Can you tell me whats happening here?
Hi, So I noticed that after sanitising the document there's some sort of encryption on it. What is it for ?
Secondly,
I am trying to batch encrypt a lot of pdf documents after sanitising it using docbleach and I am not able to encrypt it. Can you tell me whats happening here?