libgourou/README.md

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Introduction
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libgourou is a free implementation of Adobe's ADEPT protocol used to add DRM on ePub/PDF files. It overcome the lacks of Adobe support for Linux platforms.
Architecture
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Like RMSDK, libgourou has a client/server scheme. All platform specific functions (crypto, network...) has to be implemented in a client class (that derives from DRMProcessorClient) while server implements ADEPT protocol.
A reference implementation using Qt, OpenSSL and libzip is provided (in _utils_ directory).
Main fucntions to use from gourou::DRMProcessor are :
* Get an ePub from an ACSM file : _fulfill()_ and _download()_
* Create a new device : _createDRMProcessor()_
* Register a new device : _signIn()_ and _activateDevice()_
* Remove DRM : _removeDRM()_
You can import configuration from (at least) :
* Kobo device : .adept/device.xml, .adept/devicesalt and .adept/activation.xml
* Bookeen device : .adobe-digital-editions/device.xml, root/devkey.bin and .adobe-digital-editions/activation.xml
Or create a new one. Be careful : there is a limited number of devices that can be created bye one account.
ePub are encrypted using a shared key : one account / multiple devices, so you can create and register a device into your computer and read downloaded (and encrypted) ePub file with your eReader configured using the same AdobeID account.
For those who wants to remove DRM without adept_remove, you can export your private key and import it within [Calibre](https://calibre-ebook.com/) an its DeDRM plugin.
Dependencies
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For libgourou :
* None
For utils :
* QT5Core
* QT5Network
* OpenSSL
* libzip
Compilation
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Use _make_ command
make [CROSS=XXX] [DEBUG=(0*|1)] [STATIC_UTILS=(0*|1)] [BUILD_UTILS=(0|1*)] [BUILD_STATIC=(0*|1)] [BUILD_SHARED=(0|1*)]
CROSS can define a cross compiler prefix (ie arm-linux-gnueabihf-)
DEBUG can be set to compile in DEBUG mode
BUILD_UTILS to build utils or not
STATIC_UTILS to build utils with static library (libgourou.a) instead of default dynamic one (libgourou.so)
BUILD_STATIC build libgourou.a if 1, nothing if 0, can be combined with BUILD_SHARED
BUILD_SHARED build libgourou.so if 1, nothing if 0, can be combined with BUILD_STATIC
* Default value
Utils
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You can import configuration from your eReader or create a new one with _utils/adept\_activate_ :
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PWD
./utils/adept_activate -u <AdobeID USERNAME>
Then a _./.adept_ directory is created with all configuration file
To download an ePub/PDF :
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PWD
./utils/acsmdownloader -f <ACSM_FILE>
To export your private key (for DeDRM software) :
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PWD
./utils/acsmdownloader --export-private-key [-o adobekey_1.der]
To remove ADEPT DRM :
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PWD
./utils/adept_remove -f <encryptedFile>
You can get utils full options description with -h or --help switch
Copyright
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Grégory Soutadé
License
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libgourou : LGPL v3 or later
utils : BSD
Special thanks
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* _Jens_ for all test samples and utils testing
* _Milian_ for debug & code