Section: 6.5 Access link data integrity 6.5.1 General
Content: Most control signalling information elements that are sent between the MS and the network are considered sensitive and must be integrity protected. A message authentication function shall be applied on these signalling information elements transmitted between the ME and the RNC. After the RRC connection establishment and execution of the security mode set-up procedure, all dedicated MS <–> network control signalling messages (e.g. RRC, MM, CC, GMM, and SM messages) shall be integrity protected. The Mobility Management layer in the MS supervises that the integrity protection is started (see section 6.4.5). All signalling messages except the following ones shall then be integrity protected: HANDOVER TO UTRAN COMPLETE Paging Type 1 PUSCH CAPACITY REQUEST PHYSICAL SHARED CHANNEL ALLOCATION RRC Connection Request RRC Connection Setup RRC Connection Setup Complete RRC Connection Reject RRC CONNECTION RELEASE (CCCH only) SYSTEM INFORMATION (BROADCAST INFORMATION) SYSTEM INFORMATION CHANGE INDICATION TRANSPORT FORMAT COMBINATION CONTROL (TM DCCH only)