The FBI is asking Apple to help them crack an iPhone’s encryption, but that’s not the whole story. Learn how encryption and code signing work, and how quantum computers might pose a threat to both!
Physics Girl video on quantum cryptography, using quantum physics to improve encryption - https://www.youtube.com/watch?v=UiJiXNEm-Go
A fantastic Computerphile video on public key cryptography - https://www.youtube.com/watch?v=GSIDS_lvRv4
Apple’s code signing overview - https://developer.apple.com/library/mac/documentation/Security/Conceptual/CodeSigningGuide/Introduction/Introduction.html