Information, Computer and Network Security Terms Glossary and Dictionary

AUC: Authentication Centre

The Authentication Centre (AUC) is a device, usually located in the HLR of a GSM system, to authenticate each SIM card that attempts to connect to the GSM core network (typically when the phone is powered on). Once the authentication is successful, the HLR is allowed to manage the SIM and services described above. An encryption key is also generated that is subsequently used to encrypt all wireless communications (voice, SMS, etc.) between the mobile phone and the GSM core network.

Related Terms

AUC: Authentication Centre