Just noticed the Shariff plugin is only shown in 3.3+ plugin galleries.
If you are in 3.2, you will probably like to know you can install it manually from Ronald’s releases: Releases · ojsde/shariff · GitHub
For 3.2 here you have a direct link:
https://github.com/ojsde/shariff/releases/download/v3_1_2/shariff-3.1.2.zip
I qualsevol cosa, xiula 
Salut,
m.