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Content for TR 33.995 Word version: 18.0.0

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7.1 General 7.2 GBA Lite 7.3 Third Party IdP binding for two-factor authentication 7.4 Using user consent for GBA and SSO 7.5 3rd party SSO identity mapping

7 Solutions for OpenID - 3GPP interworking p. 7

7.1 General p. 7

7.2 GBA Lite p. 7

7.2.1 Rationale for solution p. 7

7.2.2 Solution description p. 8

7.2.2.1 Architecture p. 8

7.2.2.2 BSF Implementation optimizations p. 8

7.2.2.3 Message Flow p. 9

7.2.3 Evaluation against SA1 requirements p. 10

7.3 Third Party IdP binding for two-factor authentication p. 10

7.3.1 Rationale for solution p. 10

7.3.3 Solution 1 description p. 12

7.3.3.1 General p. 12

7.3.3.2 Example solutions for two factor authentication p. 14

7.3.4 Solution 2 description p. 18

7.3.4.1 Solution based on OpenID-GBA interworking where OTT performs username/password authentication p. 18

7.3.4.2 Solution based on OpenID-GBA interworking where MNO performs both GBA and username/password authentication p. 19

7.3.5 Evaluation against SA1 requirements p. 21

7.4 Using user consent for GBA and SSO p. 23

7.4.1 Rationale for solution p. 23

7.4.2 Solution description p. 23

7.4.2.1 General p. 23

7.4.2.2 GBA_ME-based solution p. 24

7.4.2.3 GBA_U-based solution p. 25

7.4.3 Functional Architecture p. 27

7.4.4 Evaluation against SA1 requirements p. 29

7.5 3rd party SSO identity mapping p. 31

7.5.1 Rationale for solution p. 31

7.5.2 Solution description p. 31

7.5.3 Evaluation against SA1 requirements p. 33

8 Conclusions p. 35

$ Change History p. 36