Cheatsheets for Authentication and Key Agreements in 2G, 3G, 4G, and 5G. (arXiv:2107.07416v1 [cs.CR])

Authentication and Key Agreement (AKA) is a type of security protocol, used
in 3GPP mobile networks, that provides two security capabilities. The first
capability, called authentication, is to cryptographically assert that a mobile
phone or a network is indeed who it claims to be, and the second capability,
called key agreement, is to put necessary cryptographic keys in place for
protection of traffic between the mobile phone and the network. Jointly, these
two capabilities lay the foundation of secure 3GPP mobile networks. From 2G-5G,
there are eight main versions of AKA, details of which are spread over and
embedded deep in multiple technical specifications. It is getting increasingly
difficult to quickly check a certain property of a certain AKA, let alone grasp
the full picture of all AKAs. Therefore, I have prepared cheatsheets for all
AKA versions and listed their main properties. I hope these will benefit
university students, security researchers, and 3GPP standardization community.
I welcome any corrections and feedback.