Mobipocket Decoder Tool - Page 12

orwell2k · 11-18-2008, 07:52 AM

Quote:

Originally Posted by pdurrant

I've uploaded a new version of my Applescript that can cope with $ in PIDs, and yes, it does that by enclosing the PID in single quotes.

It's worth a download even if your PIDs don't have $ in them, as it also now reports errors returned from the python script, and the readme has the new fix instructions for the 0.02 version of the MobiDeDRM.py script.

https://www.mobileread.com/forums/sho...&postcount=103

Paul

You could also use the original script and place a backslash before the $ symbol - this is the standard Unix (Mac, Linux, etc.) way of cancelling the special meaning of the character immediately following the backslash.

So, entering the PID as 12345\$67 (or whatever) with the normal script will interpret that PID string as the intended 12345$67

JSWolf · 11-18-2008, 08:38 AM

Quote:

Originally Posted by AZed

Just to toot my own horn a bit, I'd point out the EBook::Tools unpacker keeps even more metadata than mobi2oeb, and as of v0.3.0 (just uploaded to CPAN, not yet indexed), supports HUFF/CDIC as well.

Do you have a direct link please?

taltman711 · 11-18-2008, 09:00 AM

Quote:

Originally Posted by JSWolf

Do you have a direct link please?

Ebook Tools 3.0

Tim

AZed · 11-18-2008, 10:07 AM

Quote:

Originally Posted by taltman711

Ebook Tools 3.0

Tim

Technically, http://search.cpan.org/dist/EBook-Tools/ is a better link since it will always point to the most recent version, but yes, thank you, that works too.

Update: and that link is going to be important, because I just spotted a major problem in 0.3.0 -- the MSReader.pm file didn't get uploaded, so the convertlit support is missing. Fixed in 0.3.1.

Also, the main thread on MobileRead where I post updates is here:

https://www.mobileread.com/forums/showthread.php?t=31142

thanhtrang · 11-18-2008, 11:44 PM

How about mobipocket files with content encrypted, do we have a solution ?

pilotbob · 11-19-2008, 12:06 AM

Quote:

Originally Posted by thanhtrang

How about mobipocket files with content encrypted, do we have a solution ?

A solution to what? removing the DRM? If so, did you read this thread?

BOb

AZed · 11-19-2008, 02:05 AM

Quote:

Originally Posted by thanhtrang

How about mobipocket files with content encrypted, do we have a solution ?

If you mean one-command unpacking of DRM-protected files, no nothing supports that yet (though it would be fairly trivial to write a plugin for EBook::Tools that would do it, I wouldn't be able to distribute it).

On the other hand, it's not really that much more work to downconvert and then unpack the downconverted file. If you stick a copy of MobiDeDrm into the EBook::Tools configuration directory and then add your PIDs to the configuration file, it'll even just work via "ebook downconvert" followed by "ebook unpack".

thanhtrang · 11-19-2008, 02:38 AM

Quote:

Originally Posted by pilotbob

A solution to what? removing the DRM? If so, did you read this thread?

BOb

Yes, i had already read this thread.

I know the solution to remove DRM in PID encrypted mobipocket files (in case we know PID). But, i do not know how to deal with content encrypted files which are only read in MobiReader or devices support prc officially. When i open them in calibre and convert them, a message " It is DRMed book. You must first remove the DRM..."displayed. I guess content encrypted method using a default PID that mobireader knows and it can open, but we really do not know "default" PID.

Do i make it clear ?

wallcraft · 11-19-2008, 03:11 AM

Quote:

Originally Posted by thanhtrang

But, i do not know how to deal with content encrypted files

From Security/Encryption Options:

Quote:

* No encryption: the content of your ebook is not encrypted. It can be opened in the Mobipocket Reader by any user.
* Content Encryption: the content of your ebook is encrypted. This means that the source content does not appear as clear text and cannot be displayed or copied by a third-party software. It can however be opened in the Mobipocket Reader by any user.
* Content Encryption with password: the content is both encrypted and password-protected. Specify a password in the input field. The user will be requested to enter this password in order to open the ebook in the Mobipocket Reader.
* Content Encryption with DRM (Digital Rights Management): the content is encrypted for digital rights management. Such an eBook has to be retargeted with PIDs in order to be legible in the Mobipocket Reader.

I have never seen a "Content Encryption" MOBI so far as I know. I have not come across it on the MobiPocket Forums either, but Encryption strength in Mobipocket Creator 4.2 says:

Quote:

Whether you choose the password or DRM encryption, both methods use the same algorithms but with subtle changes.

However, mobidedrm currently only handles the DRM level of encryption.

thanhtrang · 11-19-2008, 04:02 AM

Quote:

Content Encryption: the content of your ebook is encrypted. This means that the source content does not appear as clear text and cannot be displayed or copied by a third-party software. It can however be opened in the Mobipocket Reader by any user

Exactly what i want to say.

Quote:

I have never seen a "Content Encryption" MOBI so far as I know

I upload a "content encrypted" file. Do not care about languages, it is written in Vietnamese.

To know what kind of content encryption in a prc file, please open it in Mobireader, select propertise and summary tab, then find encryption label. You will see Content Encrypted (if Content Encryption with DRM it will be PID Encrypted).

I see a lot of content encrypted files which are only opened in Mobireader, and i am so surpprise that you never see it.

Thus, the question: "how to open these content encrypted files in another third-party software". In my case, i need to open them in calibre to convert them into lrf and put them in my Sony Readẻ

igorsk · 11-19-2008, 06:04 AM

To decrypt such files, do the following changes in mobidedrm.py:

Code:

-temp_key = PC1(keyvec1, pid, False)
+temp_key = keyvec1
-if verification == ver and cksum == temp_key_sum and (flags & 0x1F) == 1:
+if verification == ver and cksum == temp_key_sum:

It can probably be made nicer but I guess you could keep two copies of the script.

thanhtrang · 11-19-2008, 12:20 PM

Quote:

Originally Posted by igorsk

To decrypt such files, do the following changes in mobidedrm.py:

Code:

-temp_key = PC1(keyvec1, pid, False)
+temp_key = keyvec1
-if verification == ver and cksum == temp_key_sum and (flags & 0x1F) == 1:
+if verification == ver and cksum == temp_key_sum:

It can probably be made nicer but I guess you could keep two copies of the script.

thank you! it seem work well.

AZed · 11-19-2008, 01:07 PM

Quote:

Originally Posted by thanhtrang

I see a lot of content encrypted files which are only opened in Mobireader, and i am so surpprise that you never see it.

Could you point me to a source of these, please? I'd be interested in looking at the structure.

thanhtrang · 11-19-2008, 01:24 PM

Quote:

Originally Posted by AZed

Could you point me to a source of these, please? I'd be interested in looking at the structure.

in my previous post, i attached a content encrypted file.

Thank igorsk again for his new codes. I modified mobidedrm.py and it works well.

DixieGal · 11-28-2008, 03:47 PM

FRAK!

How in bloody H3LL do I do this?

A couple of you have tried to teach me basics, but it just won't click in my stupid brain!!!!

I have python, mobidedrm, and someone who is trying to help sent me a secure book and a PID to practice with.

1. I put the book file into the folder with mobidedrm.
2. I open the python command prompt from the "start" menu at bottom of screen.
3. I type: mobidedrm.py booktitle.prc clearbooktitle.prc PID and "enter"
4. Invalid syntax.

ARRRRRGH!!! Please please help!!

11-19-2008, 06:04 AM	#176
igorsk Wizard Posts: 3,442 Karma: 300001 Join Date: Sep 2006 Location: Belgium Device: PRS-500/505/700, Kindle, Cybook Gen3, Words Gear	To decrypt such files, do the following changes in mobidedrm.py: Code: -temp_key = PC1(keyvec1, pid, False) +temp_key = keyvec1 -if verification == ver and cksum == temp_key_sum and (flags & 0x1F) == 1: +if verification == ver and cksum == temp_key_sum: It can probably be made nicer but I guess you could keep two copies of the script.

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11-18-2008, 11:44 PM	#170
thanhtrang Junior Member Posts: 6 Karma: 10 Join Date: Oct 2008 Device: Sony Reader PRS - 505	How about mobipocket files with content encrypted, do we have a solution ?

11-28-2008, 03:47 PM	#180
DixieGal Hi There! Posts: 7,473 Karma: 2930523 Join Date: Feb 2008 Location: Ft Lauderdale Device: iPad	FRAK! How in bloody H3LL do I do this? A couple of you have tried to teach me basics, but it just won't click in my stupid brain!!!! I have python, mobidedrm, and someone who is trying to help sent me a secure book and a PID to practice with. 1. I put the book file into the folder with mobidedrm. 2. I open the python command prompt from the "start" menu at bottom of screen. 3. I type: mobidedrm.py booktitle.prc clearbooktitle.prc PID and "enter" 4. Invalid syntax. ARRRRRGH!!! Please please help!!