SUBSCRIBER IDENTITY PRIVACY PROTECTION AND NETWORK KEY MANAGEMENT

    公开(公告)号:US20210021993A1

    公开(公告)日:2021-01-21

    申请号:US17042859

    申请日:2018-03-27

    Applicant: Apple Inc.

    Abstract: Techniques to protect subscriber identity in messages communicated between a user equipment (UE) and a cellular wireless network entity by using multiple ephemeral asymmetric keys are disclosed. The UE determines multiple ephemeral UE public and secret key pairs, while the cellular wireless network entity provides a network public key to the UE. The network public key may be updated over time. Multiple encryption keys based on the multiple ephemeral UE secret keys and the public network key are derived and used to encrypt a subscription permanent identifier (SUPI) to generate multiple subscription concealed identifiers (SUCIs). Each SUCI is used only once for messages communicated to a cellular wireless network and discarded after use. New SUCI are generated when the network public key is updated.

    Apparatus, Systems and Methods for Enhancing Short Message Service Over Internet Protocol

    公开(公告)号:US20180270626A1

    公开(公告)日:2018-09-20

    申请号:US15755397

    申请日:2015-08-28

    Applicant: APPLE INC.

    CPC classification number: H04W4/14 H04L65/1016 H04W8/06 H04W8/18 H04W84/042

    Abstract: Described herein are apparatuses, systems and methods for enhancing short message service (“SMS”) over Internet protocol (“IP”). The methods including at, a user equipment (“UE”) connected to a network, receiving an indication from the network, wherein the indication identifies whether the network supports an SMS over IP session, when the indication identifies that the network supports the SMS over IP session, registering the UE for voice communication and the SMS over IP session with the network, and when the indication identifies that the network does not support the SMS over IP session, registering the UE for voice communication without the SMS over IP session with the network.

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