This won't work for the same reason it didn't work last time (see: Clipper chip): you can't outlaw math. Phil Zimmermann showed this exhaustively, why the EU wants to ram their head into the same stone I do not know but the end result is quite predictable.
Besides that, all they will end up with is more information on how to make chocolate cookies and who is sleeping with who, it won't tell them where the next terror attack is going to take place or who will do it.
Besides that, all they will end up with is more information on how to make chocolate cookies and who is sleeping with who, it won't tell them where the next terror attack is going to take place or who will do it.