Term Explanation
AKA Authentication and Key Agreement
B-TID Bootstrapping Transaction Identifier
BSF Bootstrapping Service Function
CA Certificate Authority
CK Cipher Key
GAA Generic Authentication Architecture
GBA Generic Bootstrapping Architecture
GBA_ME ME-base GBA
GBA_U GBA with UICC-based enhancements
HTTP Hypertext Transfer Protocol
HTTPS HTTP over TLS
HSS Home Subscriber System
IK Integrity Key
IMPI IP Multimedia Private Identity
KDF Key Derivation Function
Ks_int_NAF Derived key in GBA_U which remains on UICC
Ks_ext_NAF Derived key in GBA_U
NAF Network Application Function
TLS Transport Layer Security
PKI Public Key Infrastructure
SSC Support for Subscriber Certificates