Authentication process
{"Image DocumentName": "Authentication process", "Image ImageDescription": "Mobile Base station Authentication Centre. K. Random Seed (RS) K. RS. Rand. TA11. KS. Rand. RS. This slide illustrates the process for the authentication of a mobile unit by the infrastructure. The process is symmetric with both parties relying on their knowledge of a secret piece of information - the authentication key, k. Authentication is achieved when both parties are able demonstrate that they share the same secret information. Note that k is never transmitted. There are 3 ways of generating k in the mobile - PIN, UAK or PIN/UAK. UAK is by far the most common method used. Authentication of the infrastructure by a terminal follows a similar process but different authentication algorithms are used. Authentication may be mutual. The decision to make the authentication mutual is made by the first party to be challenged. k is 128 bits in length. Random No and Random Seed are each 80 bits in length. Result is 32 bits in length. TA12. TA12. TA11. KS. (Session key) Expected Result. Result. Same?", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}