gr-ccsds 
this is a GNU Radio module for processing data which is encoded according to the CCSDS Recommended Standard for TM Synchronization and Channel Coding. it handles Reed Solomon, interleaving and scrambling/randomization.
it was done as part of my master thesis at NTNU in the spring of 2016.
installing
to use the blocks, you need to install GNU Radio.
the simplest method on Ubuntu 16.04 is to use
sudo apt install git cmake swig gnuradio
or with PyBOMBS if you want the newest version
then clone this repo and follow these instructions
mkdir build/
cd build/
cmake .. -DCMAKE_INSTALL_PREFIX=$(gnuradio-conifg-info --prefix)
make
[sudo] make install