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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.:

US 10511435 B1

PDFFull Text
Date of Patent:
Dec. 17, 2019

Filed:

Nov. 17, 2015

Methods and apparatus for direct communication key establishment

Applicant:

Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;

Inventors:

Monica Wifvesson, Lund, SE;

Vesa Lehtovirta, Jorvas, FI;

Katharina Pfeffer, Stockholm, SE;

Assignee:

Telefonaktiebolaget LM Ericsson (Publ), Stockholm, SE;

Attorney:

Patent Portfolio Builders, PLLC

Primary Examiner:

Fatoumata Traore

Int. Cl.
CPC ...
H04W 12/04 (2009.01); H04L 29/06 (2006.01); H04L 9/08 (2006.01); H04W 76/14 (2018.01); H04L 9/32 (2006.01); H04W 8/00 (2009.01); H04W 4/80 (2018.01); H04W 76/11 (2018.01);
U.S. Cl.
CPC ...
H04L 9/0822 (2013.01); H04L 9/0861 (2013.01); H04L 9/3242 (2013.01); H04L 63/061 (2013.01); H04W 8/005 (2013.01); H04W 12/04031 (2019.01); H04W 76/14 (2018.02); H04W 4/80 (2018.02); H04W 76/11 (2018.02);
Abstract

Methods () and apparatus () are disclosed for establishing a key for direct communication between a User Equipment device, UE, and a device. The methods and apparatus cooperate to form a system for securing direct communication between a UE and a device over an interface. The system comprises a UE (), a device () and a Direct Communication Element (). The Direct Communication Element () is configured to obtain a shared session key and Generic Bootstrapping Architecture Push Information, GPI, to derive a UE delivery key from at least the shared session key, to generate a direct communication key, to encrypt the direct communication key with the UE delivery key, and to send the direct communication key, the encrypted direct communication key and the GPI to the device (). The device () is configured to send the encrypted direct communication key and the GPI to the UE (). The UE () is configured to derive the shared session key from at least the GPI, to derive the UE delivery key from the shared session key and to decrypt the encrypted direct communication key using the UE delivery key. Also disclosed are a computer product operable to carry out methods according to the present invention and a computer program product comprising a computer readable medium having such a computer product stored thereon.

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