The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 2022
Filed:
Oct. 30, 2018
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A communication device for communication with a network device during EAP-AKA'. The communication device is operative to receive a first Perfect Forward Secrecy, PFS, parameter value and at least one attribute value indicating a choice of a Diffie-Hellman group from the network device. The communication device is also operative to receive a cipher key, CK, and an integrity key, IK. Generate a modified cipher key, CK′, and a modified integrity key, IK′ based on CK, IK and an access network identity. Operations include calculating a second PFS parameter value. Send the second PFS parameter value to the network device. Calculate a third PFS parameter value. Derive, using a Pseudo-random function, a key based on the third PFS parameter value, CK′, IK′ and an identity associated with the communication device. A network device, methods, further communication devices, a server, computer programs and a computer program product are also disclosed.