US 11,863,975 B2
Protection of initial non-access stratum protocol message in 5G systems
Alexandre Saso Stojanovski, Paris (FR); Robert Zaus, Munich (DE); Farid Adrangi, Lake Oswego, OR (US); Raimund Wloka, Langenzenn (DE); Abhijeet Ashok Kolekar, Hillsboro, OR (US); Ahmed Soliman, Nuremberg (DE); and Sudeep K. Palat, Cheltenham (GB)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/290,757
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Oct. 30, 2019, PCT No. PCT/US2019/058837
§ 371(c)(1), (2) Date May 1, 2021,
PCT Pub. No. WO2020/092542, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/755,364, filed on Nov. 2, 2018.
Prior Publication US 2022/0007182 A1, Jan. 6, 2022
Int. Cl. H04L 29/06 (2006.01); H04W 12/037 (2021.01); H04W 12/0431 (2021.01); H04W 12/041 (2021.01); H04L 9/30 (2006.01); H04W 48/10 (2009.01); H04W 74/08 (2009.01); H04W 84/04 (2009.01)
CPC H04W 12/037 (2021.01) [H04L 9/30 (2013.01); H04W 12/041 (2021.01); H04W 12/0431 (2021.01); H04W 48/10 (2013.01); H04L 2209/80 (2013.01); H04W 74/0833 (2013.01); H04W 84/042 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a memory configured to store a public key; and
processing circuitry configured to:
determine whether a request for the public key has been received from a user equipment (UE);
generate, in response to reception of the request, a transmission comprising the public key;
decode, after transmission of the public key, an initial radio resource control (RRC) message from the UE, the initial RRC message comprising an initial non-access stratum (NAS) message, the initial NAS message comprising Network Slice Selection Assistance Information (NSSAI) encrypted using the public key; and
decrypt the NSSAI prior to communicating the NSSAI to a core network associated with the apparatus.