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55th IETF Atlanta, GA, November 17-21, 2002 “EAP support in smartcards”

55th IETF Atlanta, GA, November 17-21, 2002 “EAP support in smartcards”. My name is Pascal Urien urienp@wifisecurity.org. Draft-urien-EAP-smartcard-00.txt. Draft Overview. Smartcard. Supplicant. Authenticator. RADIUS server. EAP. EAP / 7816. EAP / LAN. EAP / RADIUS. ISO 7816. 802.1x.

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55th IETF Atlanta, GA, November 17-21, 2002 “EAP support in smartcards”

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  1. 55th IETFAtlanta, GA, November 17-21, 2002“EAP support in smartcards” My name is Pascal Urien urienp@wifisecurity.org Draft-urien-EAP-smartcard-00.txt

  2. Draft Overview Smartcard Supplicant Authenticator RADIUS server EAP EAP / 7816 EAP / LAN EAP / RADIUS ISO 7816 802.1x RADIUS • Secure Authentication • User authentication rather than computer authentication.

  3. Draft Objectives. • EAP support in smartcards. • EAP is computed in smartcard. • Profiles definition, for some EAP types (EAP-SIM, EAP-TLS, …) • Interoperability between ISO 7816 EAP smartcards. • Agreement between major smartcard manufacturers. • Four service primitives. • Get-Next-identity() • Set-Identity() • EAP-Packet() • Get-RSN-Master-Key() EAP ENGINE MD5 EAP SIM IAK KERB EAP AKA EAP TLS EAP Smartcard

  4. Draft content. Defines 4 services primitives associated to four APDUs and two informative profiles. • EAP-SIM • EAP-MD5 4 Services, shuttled by 4 APDUs. • Get_Next_Identity() • CLA=A0 INS=16 P1=01 P2=00 Lc=0 Le=xx • Set_Identity() • CLA=A0 INS=16 P1=80 P2=00 Lc=xx Le=00 • EAP_Packet() • CLA=A0 INS=80 P1=00 P2=00 Lc=xx Le=yy • Get_RSN_Master_key() • CLA=A0 INS=A6 P1=00 P2=00 Lc=00 Le=16.

  5. System Identity Concept • A wireless user may have several (EAP) identity associated to various 802.11 networks. The system identity is an ASCII string pointed to a particular (EAP) identity. The draft suggest three identity types, • The network SSID as described in the 802.11 standard . • The NAI , the network realms and user name. • A user’s identification (UID) e.g. an ASCII string, for example a friendly name. • Get-Next-Identity() • Returns an identity from a circular list. • Set-Identity() • Sets the smartcard identity, e.g everything required for EAP packet computing. • The triplet (EAP-Identity, EAP-Type, Key(s)).

  6. EAP Support. • EAP_Packet() • EAP-Packet() processes an EAP (request) message an returns an EAP (response) message. • Get_RSN_Master_Key() • Returns the session master key, if any, deduced from a successful authentication scenario. Secure Trusted EAP Engine In Out Master_Key

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