name: UIA
full_form: UMTS Integrity Algorithm
context: When an MS wishes to establish a connection with the network, the MS shall indicate to the network in the MS/USIM Classmark which cipher and integrity algorithms the MS supports. This information itself must be integrity protected. As it is the case that the RNC does not have the integrity key IK when receiving the MS/USIM Classmark this information must be stored in the RNC. The data integrity of the classmark is performed, during the security mode set-up procedure by use of the most recently generated IK (see section 6.4.5). The network shall compare its integrity protection capabilities and preferences, and any special requirements of the subscription of the MS, with those indicated by the MS and act according to the following rules: 1) If the MS and the network have no versions of the UIA algorithm in common, then the connection shall be released. 2) If the MS and the network have at least one version of the UIA algorithm in common, then the network shall select one of the mutually
description: The UMTS Integrity Algorithm (UIA) is a cryptographic technique used to ensure data integrity in UMTS networks. It is utilized during the security mode set-up procedure to protect the integrity of the MS/USIM Classmark information.
explanation: UIA is classified as a Technology because it is a specific algorithm designed for ensuring data integrity, a fundamental aspect of telecommunications technology.
section_title: 6.4.2	Ciphering and integrity mode negotiation
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