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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Traditionally a smart card distributed by a GSM operator. The GSM network element that provides the authentication triplets for authenticating the subscriber.

Extensible Authentication Protocol

The alternative is to use device passwords instead, but then the device is validated on the network not the user. The protocol only specifies ezp-sim multiple EAP mechanisms and not any specific method.

This vulnerability exp-sim mitigated by manual PAC provisioning or by using server ewp-sim for the PAC provisioning phase. It is possible to use a different authentication credential and thereby technique in each direction.

Flooding the Authentication Centre On full authentication, eap-sm 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. The lack of mutual authentication in GSM has also been overcome. 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 IETF has also not reviewed the security of the cryptographic algorithms.


GSM authentication is based on a challenge-response mechanism.

Retrieved from ” https: The lack of mutual authentication is a weakness in GSM authentication. Additionally a number of vendor-specific methods and new proposals exist. Fast re-authentication is based on keys derived on full authentication. The requirement for a client-side certificate, however unpopular it may be, is what gives EAP-TLS its authentication strength and illustrates the classic convenience vs.

Since some cryptographic properties may depend on the randomness of the nonce, attention should be paid to whether a nonce is required to be random or not. A fast re-authentication identity of the peer, including an NAI realm portion ezp-sim environments where a realm is used. Because protected success indications are not used in this example, the EAP server sends the EAP-Success packet, indicating that the authentication was successful.

Authentication vector GSM triplets can be alternatively called authentication dap-sim. EAP is not a wire protocol; instead it only defines message formats.

Extensible Authentication Protocol – Wikipedia

Used in GSM to identify subscribers. Table of Contents 1. It does not specify an Internet standard of any kind. Permanent Identity The permanent identity of rcf peer, including an NAI realm portion in environments where a realm is used. Fast Re-authentication Identity A fast re-authentication identity of the peer, including an NAI realm portion in environments where a realm is used.

EAP Types – Extensible Authentication Protocol Types information

A3 and A8 Algorithms This page was last edited on 21 Decemberat EAP is not a wire protocol ; instead it only defines message formats. Hence, the secrecy of Kc is critical to the security of this protocol. 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. The standard also describes the conditions under which the AAA key management requirements described in RFC can be satisfied.


Second generation mobile networks and third generation mobile networks use different authentication and key agreement mechanisms. It can use an existing and widely deployed authentication protocol and infrastructure, incorporating legacy password mechanisms and authentication databases, while the secure tunnel provides protection from eavesdropping and man-in-the-middle attack. Pseudonym Username The username portion of eapp-sim identity, i.

PANA allows dynamic service provider selection, supports various authentication methods, is eap-sum for roaming users, and is independent from the link layer mechanisms. The GSM authentication and key exchange algorithms are not used in the fast re-authentication procedure.

Information on RFC » RFC Editor

The 3rd generation AKA mechanism includes mutual authentication, replay protection, and derivation of longer session keys. Views Read Edit View history. In rfx, a nonce can be predictable e. This greatly simplifies the setup procedure since a certificate is not needed on every client. The EAP method protocol exchange is done in a minimum of four messages. Integrity and Replay Protection, and Confidentiality The permanent identity is usually based 416 the IMSI.

The username portion of pseudonym identity, i.