RFC 3310 (rfc3310) - Page 3 of 18
Hypertext Transfer Protocol (HTTP) Digest Authentication Using Authentication and Key Agreement (AKA)
Alternative Format: Original Text Document
RFC 3310 HTTP Digest Authentication Using AKA September 2002 This document specifies a mapping of AKA parameters onto HTTP Digest authentication. In essence, this mapping enables the usage of AKA as a one-time password generation mechanism for Digest authentication. As the Session Initiation Protocol (SIP) [3] Authentication Framework closely follows the HTTP Authentication Framework, Digest AKA is directly applicable to SIP as well as any other embodiment of HTTP Digest. 1.1 Terminology This chapter explains the terminology used in this document. AKA Authentication and Key Agreement. AuC Authentication Center. The network element in mobile networks that can authorize users either in GSM or in UMTS networks. AUTN Authentication Token. A 128 bit value generated by the AuC, which together with the RAND parameter authenticates the server to the client. AUTS Authentication Token. A 112 bit value generated by the client upon experiencing an SQN synchronization failure. CK Cipher Key. An AKA session key for encryption. IK Integrity Key. An AKA session key for integrity check. ISIM IP Multimedia Services Identity Module. PIN Personal Identification Number. Commonly assigned passcodes for use with automatic cash machines, smart cards, etc. RAND Random Challenge. Generated by the AuC using the SQN. RES Authentication Response. Generated by the ISIM. Niemi, et. al. Informational
