The 2A and crypto have been linked for a long time. The original crypto fight in the 90s was over exportable encryption (because it was listed along with munitions and other ITAR-restricted items).

One idea I saw floated around the time of the San Bernadino iPhone was arguing that encryption is protected by the second amendment as a means to not having to fight against backdoored encryption every few years. I don't have the case law familiarity with the 2A & encryption to say if it would go well but I did find it a fun idea.

Edit: I should add that this would be in addition to the clear 1A protection code and therefore encryption has.