EAP/SIM Authentication

An extension to the EAP (Extensible Authentication Protocol) proposed by the IETF (Internet Engineering Task Force) enabling authentication and session key distribution using the GSM SIM (Subscriber Identity Module). The mechanism specifies enhancements to GSM authentication and key agreement whereby multiple authentication triplets can be combined to create authentication response and encryption keys of greater strength than the individual GSM triplets. The mechanism also introduces network authentication, user anonymity and a re-authentication procedure.


  • Fully interactive 3GPP based network map
  • Narrated call flows
  • Detailed network procedures

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