name: SUCI
full_form: SUbscription Concealed Identifier
context: In order to identify a real SUCI replay attack and not break the SUCI retransmission mechanism, UDM applies the message queue of the storage data unit (DU), together with the database storing public key, to determine whether the received SUCI is a replay attack. The structure of Data Unit (DU: Data Unit) is DU={SUCI, SUPI, Timestamp}. During the timer TUDM whose value is set to T3519, the DU will be used as a comparison tag to identify whether the received SUCI is a SUCI retransmitted by a legitimate user. That is, the SUCI received subsequently will be compared with the SUCI in the DU. If the same, the received SUCI will not be discarded and will be processed further. If they are different, the public key in the SUCI is applied to judge whether the SUCI is a replay attack. The concrete steps are as follows. 1. After receiving SUCI, UDM sets timestamp to the time when SUCI is received, and searches for SUCI in the message queue of the stored DUs. If SUCI is found and the timestamp in
description: The Subscription Concealed Identifier (SUCI) is a critical network attribute used to identify a user's subscription while concealing their actual identifier, thereby enhancing privacy and security. It plays a key role in authentication and session management within the 5G core network.
explanation: Given the context from 3GPP TS 33.846, SUCI is clearly described as an identifier used for specific purposes within the network, such as preventing replay attacks and managing user subscriptions. This usage aligns with the definition of a Parameter in telecommunications, which includes identifiers and attributes critical for network operation.
section_title: 6.2.11.2	Solution details
biotag_Context: O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,B-Parameter,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,B-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,B-Parameter,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O
biotag_Description: O,B-Parameter,I-Parameter,I-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Technology,O,O