Mobile cellular networks authenticated access
AssigneeIntel Corporation
InventorsAbhijeet Kolekar, Amr Mostafa, Farid Adrangi
Life of this patent
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Abstract
Systems, methods, and devices authenticate mobile network cellular cells using asymmetric/public-key cryptography algorithms (e.g., Digital Signature Algorithm (DSA)) through integrity protecting the cellular cells broadcasted messages (e.g., paging and/or system information blocks (SIBs) system information broadcast messages) by message authentication code (MAC).
Claims24
An apparatus for a user equipment (UE) to perform a cell authentication in a cellular network, the apparatus comprising:
- a memory interface to send or receive, to or from a memory device, data corresponding to an authenticated access mode;
- and
- a processor to:
- maintain the authenticated access mode per public land mobile network (PLMN);
- maintain a valid list of public-private keys pairs per PLMN;
- select or re-select a cellular cell to access for communication with the cellular network;
- start an un-authenticated access guard timer;
- determine whether the cellular cell supports an authenticated access feature;
- and
- perform authentication of the cellular cell using the public-private key pairs.
A method for a cellular network, the method comprising:
- maintaining, per public land mobile network (PLMN), one or more public private keys pairs comprising an identifier (ID), a private key, and a public key;
- processing a first request from a cellular cell for a first cellular cell public-private keys pair authentication code generated with a cellular network private key;
- in response to the first request, generating the first cellular cell public-private keys pair authentication code;
- and
- generating a confirmation message to send the first cellular cell public-private keys pair authentication code to the cellular cell.
A non-transitory computer-readable storage medium, the computer-readable storage medium including instructions that when executed by a processor of a cellular cell supporting an authenticated access feature, cause the processor to:
- send a first request to an authentication center of a cellular network for a first cellular cell public-private keys pair authentication code generated with a cellular network private key;
- receive, from the authentication center of the cellular network, a confirmation message in response to the first request, the confirmation message comprising the first cellular cell public-private keys pair authentication code, a random number, and an authentication session identifier (ASID);
- generate a second cellular cell public-private keys pair authentication code generated with a cellular cell private key;
- and
- broadcast, in at least one cellular cell broadcast message, a cellular cell public key, the first cellular cell public-private keys pair authentication code, and the second cellular cell public-private keys pair authentication code.
Dependencies are inferred from the claim text.