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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Additionally a number of vendor-specific methods and new proposals exist. The protocol only specifies chaining multiple EAP mechanisms and not any specific method. It is worth noting that the PAC file is issued on a per-user basis.
Extensible Authentication Protocol – Wikipedia
Cryptographic Separation of Keys and Session Independence GSM cellular networks use a subscriber identity module card to carry out user authentication. WPA2 and potentially authenticate the wireless hotspot. This would allow for situations much like HTTPS, where a wireless hotspot allows free access and does not authenticate station clients but station clients wish to use encryption IEEE 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.
Note that the user’s name is never transmitted in unencrypted clear text, improving privacy.
EAP-AKA and EAP-SIM Parameters
EAP is an authentication framework for providing the transport and usage of keying material and parameters generated by EAP methods.
With a client-side certificate, a compromised password is not enough to break into EAP-TLS enabled systems because the intruder still needs to have the client-side certificate; indeed, a password is not even needed, as it is only used to encrypt the client-side certificate for storage.
The username portion of pseudonym identity, i. From the triplets, the EAP server derives the keying material, as specified in Section 7.
Communicating the Peer Identity to the Server EAP is not a wire protocol ; instead it only defines message formats. GSM is a second generation mobile network standard. Authentication vector GSM triplets can be alternatively called authentication vectors. The username portion of permanent identity, i. Message Sequence Examples Informative Archived from the original PDF on 12 December Attacks Against Identity Privacy Archived from the original on This greatly simplifies the setup procedure since a certificate is not needed on every client.
This mechanism specifies enhancements to GSM authentication and key agreement whereby multiple authentication triplets can be combined to create authentication responses and session keys of greater strength than the individual GSM triplets.
EAP Types – Extensible Authentication Protocol Types information
The packet format and the use of attributes are specified in Section 8. Protected success indications are discussed in Section 6. 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. PEAPv1 was defined in draft-josefsson-pppext-eap-tls-eap through draft-josefsson-pppext-eap-tls-eap and PEAPv2 was defined in versions beginning with draft-josefsson-pppext-eap-tls-eap The lack of mutual authentication is a weakness in GSM authentication.
The GSM network element that provides the authentication 41886 for authenticating the subscriber. EAP-GTC carries a text challenge from the authentication server, and a reply generated by a security token.
The version negotiation is protected by including the version list and the selected version in the calculation of keying material Section 7.
EAP-AKA and EAP-SIM Parameters
Protocol for Carrying Authentication for Network Access.
Wireless networking Computer access control protocols. Hence, the secrecy of Kc is critical to the security of this protocol.
Fast Re-authentication Identity A fast re-authentication identity of the peer, including an NAI realm portion in environments where a realm is used.
PANA allows dynamic service provider selection, supports various authentication methods, is suitable for roaming users, and is independent from the link layer mechanisms. On full authentication, the peer’s response includes either the user’s International Mobile Subscriber Identity IMSI or a temporary identity pseudonym ep-sim identity privacy is in effect, as specified in Section 4. The EAP-SIM mechanism specifies enhancements to GSM authentication and key agreement whereby multiple authentication triplets can be combined to create authentication responses and session keys of greater strength than the individual GSM triplets.