One thing about guns that is very similar to drugs, legal varieties of course. Want to reduce their use, then ensure the taxes on them reflect the harm they cause. User pays means the group that users those items, drugs or guns should pay for all the damages caused by those items, no more privatising the profits and socialising the losses. There should be sufficient tax placed upon guns and bullets to ensure that all the damage caused by their illicit, ignorant, clumsy, foolish use is paid for and not by people who do not have or use them. So somewhere upwards of 100% tax and this should apply to used guns as well.
Encryption of course is directly tied to the principle of freedom. A free person owns there privacy, a slave's privacy is owned by someone else. The more privacy you lose, the more a slave you become. Loss of privacy extends to physical sexual assaults (body search), where you are no longer private to your person but others are allowed to molest you, strip you naked and, sexually assault you and you whole family at will, exactly as they would for any other group of slaves.
Only a free person has privacy and a slave never does and that is a core social principle since time immemorial. So slave or free person, you decide who owns your private life, you or some one else, not just information but also your physical person.