RFC Extensible Authentication Protocol Method for Global System for Mobile Communications (GSM) Subscriber Identity Modules (EAP-SIM), January . RFC (part 1 of 5): Extensible Authentication Protocol Method for Global System for Mobile Communications (GSM) Subscriber Identity Modules (EAP-SIM ). EAP-SIM RFC is a newly emerged EAP authentication The standard for EAP-SIM authentication is still in draft form with the IETF .

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Protected Extensible Authentication Protocol. EAP-GTC carries a eap-im challenge from the authentication server, and a reply generated by a security token.

Format, Generation and Usage of Peer Identities Permanent Identity The permanent identity of the peer, including an NAI realm portion in environments where a realm is used.

EAP-AKA and EAP-SIM Parameters

The lack of mutual authentication in GSM has also been overcome. In addition, the private key on a smart card is typically encrypted using a PIN that only the owner of the smart card knows, minimizing its utility for a thief even before the card has been reported stolen and revoked. Network Working Group H. This phase is independent of other phases; hence, any other scheme in-band or out-of-band can be used in the future.

The GSM authentication and key exchange algorithms are not used in the fast re-authentication procedure. The client can, but does not have to be authenticated via a CA -signed PKI certificate to the server. The EAP-POTP method provides two-factor user authentication, meaning that a user needs both physical access to a token and knowledge of a personal identification number PIN to perform authentication.

The Kc key is originally intended to be used as an encryption key over the air interface, but in this protocol, it is used for deriving keying material and is not directly used. Archived from the original on 26 November It is worth noting that the PAC file is issued on a per-user basis. Pseudonym Identity A pseudonym identity of the peer, including an NAI realm portion in environments where a realm is used.


A pseudonym identity of the peer, including an NAI realm portion in environments where a realm is used. Attacks Against Identity Privacy The alternative is to use device passwords instead, but then the device is validated on the network not the user. Note that the user’s name is never transmitted in unencrypted clear text, improving privacy.

EAP is not a wire protocol; instead it only defines message formats. Archived from the original on February 9, After the server is securely authenticated to the client via its CA certificate and optionally the client to the server, the server can then use the established secure connection “tunnel” to authenticate the client. EAP-SIM also eeap-sim the combined RAND challenges and other messages with a message authentication eap-slm in order to provide message integrity protection along with mutual authentication.

Retrieved from ” https: In general, a nonce can be predictable e. Archived from the original PDF on 12 December Wireless networking Computer access control protocols. It also specifies an optional fast re-authentication procedure.

EAP Types – Extensible Authentication Protocol Types information

The password may be a low-entropy one and may be drawn from some set of possible passwords, like a dictionary, which is available to an attacker. PANA allows dynamic service provider selection, supports various authentication methods, is suitable for roaming users, and is independent from the link layer mechanisms.

This vulnerability is mitigated by manual PAC provisioning or by using server certificates for the PAC provisioning phase. It is more likely that the physical theft of a smart card would be noticed and the smart card immediately revoked than a typical password theft would be noticed. When EAP is invoked by an EAP-TLS is still considered one of the most secure EAP standards available, although TLS provides strong security only as long as the user understands potential warnings about false credentials, and is universally supported by all manufacturers of wireless LAN hardware and software.


On full authentication, the peer’s response includes either the user’s International Mobile Subscriber Identity IMSI or a temporary identity pseudonym if identity privacy is in effect, as specified in Section 4.

Used on full authentication only.

EAP Types – Extensible Authentication Protocol Types

This page was last edited on 21 Decemberat This packet may also include attributes for requesting the subscriber identity, as specified in Section 4. The version negotiation is protected by including the version list and the selected version in the calculation of keying material Section 7. EAP is an authentication framework for providing the transport and usage of keying material and parameters generated by EAP methods. The username portion of fast re-authentication identity, i.

In this document, the term nonce is only used to denote random nonces, and it is not used to denote counters. Mutual Authentication and Triplet Exposure Used on fast re-authentication only. It is possible to use a different authentication credential and thereby eao-sim in each direction. Traditionally a smart card distributed by a GSM operator.

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