Acronyms and cryptography – a look at Subscriber Identifiers in 5G
What do Unlock SIMs sold online actually do and how do they do it?
Quick look at cheap “Magic SIM Cards”, what they do, how they do it, and the amazing graphics they use.
How to encode and decode MCC and MNC as PLMN Identifiers
Using osmo-sim-auth to query USIM/SIM cards authentication mechanism.
Exploring the how and why of Authentication in LTE & NR networks.
Adventures in getting USIMs to use on private LTE networks.
How Android OS autoprovisions APN settings and how to set your own for your unique MCC & MNC.
We’ve talked a bit in the past few posts about keys, K and all it’s derivatives, such as Kenc, Kint, etc. Each of these is derived from our single secret key K, known only to the HSS and the USIM. To minimise the load on the HSS, the HSS transfers some of the key management […]
How LTE Subscriber authenticate the network
LTE/4G’s use of RAND and K to verify subscribers identity.
Contents of a USIM, fields & their meanings and basics of EUTRAN authentication.
How the AKAv1-MD5 algorith derives keys and how it’s used in IMS Networks