3.2 KiB
Introduction
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
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 an its DeDRM plugin.
Dependencies
For libgourou :
- None
For utils :
- libcurl
- OpenSSL
- libzip
Compilation
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
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
Grégory Soutadé
License
libgourou : LGPL v3 or later
utils : BSD
Special thanks
- Jens for all test samples and utils testing
- Milian for debug & code