My impression was that the FBI and CIA etc has always been trying to ban encryption an similar, but has so far mostly failed. Strong encryption was illegal (from the Wikipedia page on PGP):
”in February 1993 Zimmermann [inventor of PGP encryption] became the formal target of a criminal investigation by the US Government for “munitions export without a license”. At the time, cryptosystems using keys larger than 40 bits were considered munitions within the definition of the US export regulations; PGP has never used keys smaller than 128 bits, so it qualified at that time.”
But this was later changed to allow strong encryption for the public. So while I share your worry, I take hope that the slippery slope is not inevitable.
The Ones Who Walk Into Omelas With Kevlar Vests And Samurai Swords And Desert Eagles And Stare Down All Those Wicked Unrighteous Sinners In Their Droves And Proceed To Totally Fucking Waste Them All In A High Octane Action Sequence That Kicks Insane Amounts Of Ass Think The Raid If It Was Directed By John Woo But When They Finally Get To The Door Of The Basement Where They Keep The Kid Oh Shit It’s The Fucking King Of Omelas And He’s Wielding The Cursed Obsidian Blade Of The Underworld And They Gotta Waste Him Too But He’s Incredibly Fast And Strong Thanks To All The Power He’s Getting From The Kid And He Kills Almost All Of Them Until The Leader Draws Him Out With A Double Feint That Leaves Him Wide Open And Cuts His Fucking Head Clean Off With A Single Perfect Stroke And Then They Finally Open The Door To The Basement And Free The Kid
—By lesbianbloodritual on tumblr: https://www.tumblr.com/login_required/lesbianbloodritual