tag:blogger.com,1999:blog-6828758156183968422.post5860975093667420302..comments2024-03-21T14:12:03.742+01:00Comments on How LTE Stuff Works?: LTE: Authentication RequestKPhttp://www.blogger.com/profile/12785738149524762481noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-6828758156183968422.post-59490898175587534382021-07-03T14:08:38.182+02:002021-07-03T14:08:38.182+02:00OPc (secret key of Operator), K (secret key of IMS...OPc (secret key of Operator), K (secret key of IMSI) and RAND value genrated at HSS are used to generate XRES at HSS. The same OPc and K is burned in the SIM and RAND value is transferred to UE by MME. Using this, UE generates RES and send it to MME. MME compared XRES and RES and authenticates UE.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6828758156183968422.post-72018705934451484232020-10-19T16:10:27.991+02:002020-10-19T16:10:27.991+02:00The MME will check whether RES sent by UE is same ...The MME will check whether RES sent by UE is same as XRES (sent by HSS to MME)Anonymoushttps://www.blogger.com/profile/06119579797151913666noreply@blogger.comtag:blogger.com,1999:blog-6828758156183968422.post-3624921458185415302017-10-26T14:17:19.021+02:002017-10-26T14:17:19.021+02:00Need help to understand use of Op and OPc key use ...Need help to understand use of Op and OPc key use in AuC. Network authenticate USIM by comparing card's RES with its XRES. XRES = RAND(f2)Ki. What is OPc/OP used for by the AuC? I know the AuC generates XMAC-A which will compaAnonymoushttps://www.blogger.com/profile/04439083861250707335noreply@blogger.comtag:blogger.com,1999:blog-6828758156183968422.post-64208423822047559142014-04-27T13:15:43.655+02:002014-04-27T13:15:43.655+02:00 Thanks for this. Now I understood the user authen... Thanks for this. Now I understood the user authentication side but what about the Network side.<br />How is the network authenticated?Anonymoushttps://www.blogger.com/profile/17500466065556392318noreply@blogger.com