6 terms

Mobile authentication

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Authentication vector
A sequence of numbers generated by the AuC, which include the RAND, AUTN, XRES, CK, IK.
RAND
Random number
Authentication Token (AUTN)
Depends on a sequence number, which the UE and AuC synchronise between them and the RAND
Expected result (XRES)
To be used by the SGSN to check the authentication response from the UE
Cipher Key (CK)
Used to encrypt the user data until the next authentication request.
Integrity Key (IK)
Used to verify the integrity of signalling messages to and from the UE