Combined options from the two wordings Option 1

Combined options from the two wordings Option 1: keep SUPI as input of key derivation of EAP-AKA’ as defined and clarify what is the format of SUPI for the key derivation in F. 3 of TS 33. 501, the Identity for EAP-AKA’ key derivation as defined in clause F. 3 of TS 33. 501 takes the value of imsi-<IMSI> or nai-<NAI> depending on SUPI Type reflected in HW CRs: 0598 (rel. 15), 0599 (rel. 16) Option 2: redefine the identity input for key derivation of EAP-AKA’ in 33. 501 , i. e. remove SUPI type from the identity for the key derivation of EAP-AKA’, the Identity for EAP-AKA’ key derivation as defined in clause F. 3 of TS 33. 501 takes the value of <IMSI> or <NAI> depending on SUPI Type reflected in QC et al. CRs: 0549 (rel. 15), 0550 (rel. 16) © 3 GPP 2019 3 GPP TSG#88 -e 1

Annex of the old wording © 3 GPP 2019 3 GPP TSG#88 -e 2

Wenruo’s wording Option 1: keep SUPI as input of key derivation of EAP-AKA’ as defined and clarify what is the format of SUPI for the key derivation in F. 3 of TS 33. 501 reflected in HW CRs: 0598 (rel. 15), 0599 (rel. 16) Option 2: redefine the identity input for key derivation of EAP-AKA’ in 33. 501 and remove SUPI type from the identity for the key derivation of EAP-AKA’, reflected in QC et al CRs. : 0549 (rel. 15), 0550 (rel. 16) © 3 GPP 2019 3 GPP TSG#88 -e 3

Haris’ wording Option 1: the Identity for EAP-AKA’ key derivation as defined in clause F. 3 of TS 33. 501 takes the value of imsi-<IMSI> or nai-<NAI> depending on SUPI Type reflected in HW CRs: 0598 (rel. 15), 0599 (rel. 16) Option 2: the Identity for EAP-AKA’ key derivation as defined in clause F. 3 of TS 33. 501 takes the value of <IMSI> or <NAI> depending on SUPI Type reflected in QC et al. CRs: 0549 (rel. 15), 0550 (rel. 16) © 3 GPP 2019 3 GPP TSG#88 -e 4