RE: Decrypt PDF to edit it then encrypt it

Thanks Tilman! I have tested your code & it works fine  Best regards, Hesham -- Included Message: here's some code... I'm also adding it to our tests as some extra fun.

Re: Decrypt PDF to edit it then encrypt it

here's some code... I'm also adding it to our tests as some extra fun.     PDEncryption encryption = doc.getEncryption();     int revision = encryption.getRevision();     if (revision < 5)     {     StandardSecurityHandler standardSecurityHandler = new

RE: Decrypt PDF to edit it then encrypt it

Thanks a lot Tilman .. I will try that  Best regards, Hesham -- Included Message: It is possible for older encryption (not AES256): get the source code and have a look at

Re: Decrypt PDF to edit it then encrypt it

Am 03.01.2018 um 12:34 schrieb Hesham Gneady: I am asking if there is a way to copy the encryption dictionary(Or whatever you call it) just as it is to re-encrypt the PDF file using it once again. I don't want to reveal any password. Oh. I haven't tried it - what you might try would be to

Re: Decrypt PDF to edit it then encrypt it

It is possible for older encryption (not AES256): get the source code and have a look at StandardSecurityHandler.java. There is a segment where "isOwnerPassword()" is called, and a bit later, "computedPassword" is calculated by calling getUserPassword(). I tried this by debugging with out test

RE: Decrypt PDF to edit it then encrypt it

I am asking if there is a way to copy the encryption dictionary(Or whatever you call it) just as it is to re-encrypt the PDF file using it once again. I don't want to reveal any password. Best regards, Hesham

Re: Decrypt PDF to edit it then encrypt it

You can't do that. The library is obviously not going to reveal to you what the password was... On Wed, Jan 3, 2018 at 9:29 AM, Hesham Gneady wrote: > Hello, > > > > I have a PDF file that has an owner password & user password. I'd like to > decrypt it using the owner