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    Diversification of Public Keys
    81.
    发明申请
    Diversification of Public Keys 审中-公开

    公开(公告)号：US20170357822A1

    公开(公告)日：2017-12-14

    申请号：US15619519

    申请日：2017-06-11

    Applicant: Apple Inc.

    Inventor： Lei Wei ,  Yannick L. Sierra ,  Per Love Hornquist Astrand

    IPC: G06F21/62 ,  H04L9/14 ,  H04L9/08

    Abstract: Some embodiments provide a method for providing public keys for encrypting data. The method receives (i) a first request from a first source for a public key associated with a particular user and (ii) a second request from a second source for the public key associated with the particular user. In response to the first request, the method distributes a first public key for the particular user to the first source. In response to the second request, the method distributes a second, different public key for the particular user to the second source. Data encrypted with the first public key and data encrypted with the second public key are decrypted by a device of the particular user with a same private key.

    CDMA/multimode VoLTE device with reduced time to camp
    82.
    发明授权
    CDMA/multimode VoLTE device with reduced time to camp 有权

    公开(公告)号：US09763153B2

    公开(公告)日：2017-09-12

    申请号：US14727958

    申请日：2015-06-02

    Applicant: Apple Inc.

    Inventor： Prashant H. Vashi ,  Vikram B. Yerrabommenahalli ,  Abhishek Sen ,  Bharath Narasimha Rao ,  Yannick L. Sierra

    IPC: H04W36/14 ,  H04B7/26

    CPC classification number: H04W36/14 ,  H04B7/2628 ,  H04W8/183 ,  H04W48/18

    Abstract: A user equipment (UE) may camp on a network following a SIM bootup. Specifically, the UE may determine that a SIM implementation module of the UE includes a first SIM application (e.g., USIM) associated with a first cellular radio access technology (RAT) (e.g., LTE) and a second SIM application (e.g., CSIM) associated with a second cellular RAT (e.g., CDMA). The UE may then initialize the first SIM application and the second SIM application. The UE may determine whether the network is configured to support both voice and data communications using the first cellular RAT. If so, the UE may initiate camping on the network with the first cellular RAT in response to determining that the first SIM application is ready, but before the second SIM application is ready. If not, the UE may wait until both the first and second SIM applications are ready before initiating camping on the network.

    CDMA/Multimode VoLTE Device with Reduced Time to Camp
    83.
    发明申请
    CDMA/Multimode VoLTE Device with Reduced Time to Camp 有权
    CDMA /多模VoLTE设备，缩短营地时间

    公开(公告)号：US20160360456A1

    公开(公告)日：2016-12-08

    申请号：US14727958

    申请日：2015-06-02

    Applicant: Apple Inc.

    Inventor： Prashant H. Vashi ,  Vikram B. Yerrabommenahalli ,  Abhishek Sen ,  Bharath Narasimha Rao ,  Yannick L. Sierra

    IPC: H04W36/14 ,  H04B7/26

    CPC classification number: H04W36/14 ,  H04B7/2628 ,  H04W8/183 ,  H04W48/18

    Abstract: A user equipment (UE) may camp on a network following a SIM bootup. Specifically, the UE may determine that a SIM implementation module of the UE includes a first SIM application (e.g., USIM) associated with a first cellular radio access technology (RAT) (e.g., LTE) and a second SIM application (e.g., CSIM) associated with a second cellular RAT (e.g., CDMA). The UE may then initialize the first SIM application and the second SIM application. The UE may determine whether the network is configured to support both voice and data communications using the first cellular RAT. If so, the UE may initiate camping on the network with the first cellular RAT in response to determining that the first SIM application is ready, but before the second SIM application is ready. If not, the UE may wait until both the first and second SIM applications are ready before initiating camping on the network.

    Abstract translation: 用户设备（UE）可以在SIM启动之后驻留在网络上。 具体地，UE可以确定UE的SIM实现模块包括与第一蜂窝无线电接入技术（RAT）（例如，LTE）和第二SIM应用（例如，CSIM）相关联的第一SIM应用（例如，USIM） 与第二细胞RAT（例如，CDMA）相关联。 然后，UE可以初始化第一SIM应用和第二SIM应用。 UE可以确定网络是否被配置为支持使用第一蜂窝RAT的语音和数据通信。 如果是，则UE可以响应于确定第一SIM应用准备就绪，但在第二SIM应用准备好之前，可以利用第一蜂窝RAT在网络上启动野营。 如果不是，则在启动在网络上的野营之前，UE可以等待直到第一和第二SIM应用都准备就绪。

    Message Attestation for Sealed Sender
    84.
    发明申请
    Message Attestation for Sealed Sender 有权

    公开(公告)号：US20250119411A1

    公开(公告)日：2025-04-10

    申请号：US18909442

    申请日：2024-10-08

    Applicant: Apple Inc.

    Inventor： Catherine Yun ,  Elliot S. Briggs ,  Simon J. Gornall ,  Michael J. Hashe ,  Steven A. Myers ,  Andrew M. Pace ,  Yannick L. Sierra ,  Phillip T. Tao

    IPC: H04L9/40 ,  H04L9/14 ,  H04L9/32

    Abstract: Techniques are disclosed relating to improving secure message communication. In various embodiments, a message delivery server receives a request to deliver an encrypted message from a sender to a recipient. The encrypted message obfuscates the identity of the sender such that the message delivery server is unable to determine the identity of the sender. The message delivery server determines whether to deliver the encrypted message based on a signed attestation received with the request and, based on the determining, delivers the encrypted message to the recipient. In some embodiments, the determining includes verifying the signed attestation using a verification key provide by the sender. In some embodiments, the encrypted message is an email, a text message, a push notification, or a video or audio call request.

    Accessory assisted account recovery
    87.
    发明授权
    Accessory assisted account recovery 有权

    公开(公告)号：US11863671B1

    公开(公告)日：2024-01-02

    申请号：US16848591

    申请日：2020-04-14

    Applicant: Apple Inc.

    Inventor： Yannick L. Sierra ,  Lucia E. Ballard ,  Kyle C. Brogle ,  DJ Capelis

    IPC: H04L29/06 ,  H04L9/08

    CPC classification number: H04L9/0894 ,  H04L9/083 ,  H04L9/0822 ,  H04L9/0869

    Abstract: Embodiments described herein enable a user to bypass the use of one-time keys or account recovery codes by providing techniques for accessory assisted account recovery. In various embodiments, accessory assisted account recovery makes use of an accessory device of a user, where the accessory device can be any device having a secure processor, cryptographic engine, public key accelerator, or is otherwise able to accelerate cryptographic operations or perform cryptographic operations in a secure execution environment. An account recovery key can be split into multiple portions. At least one portion of the recovery key is then encrypted. The accessory device is then configured to be uniquely capable of decrypting the encrypted portion of an account recovery key.

    Methods and architectures for secure ranging
    90.
    发明授权
    Methods and architectures for secure ranging 有权

    公开(公告)号：US11728972B2

    公开(公告)日：2023-08-15

    申请号：US17848922

    申请日：2022-06-24

    Applicant: APPLE INC.

    Inventor： Yannick L. Sierra ,  Zhimin Chen ,  Thomas Icart

    IPC: H04L9/08 ,  G01S13/76 ,  H04L9/40 ,  H04W12/03 ,  H04W12/041

    CPC classification number: H04L9/0822 ,  G01S13/765 ,  H04L63/1441 ,  H04W12/03 ,  H04W12/041 ,  H04L9/0872 ,  H04L63/0428 ,  H04L63/0492

    Abstract: Embodiments described herein enable the generation of cryptographic material for ranging operations in a manner that reduces and obfuscates potential correlations between leaked and secret information. One embodiment provides for an apparatus including a ranging module having one or more ranging sensors. The ranging module is coupled to a secure processing system through a hardware interface to receive at least one encrypted ranging session key, the ranging module to decrypt the at least one encrypted ranging session key to generate a ranging session key, generate a sparse ranging input, derive a message session key based on the ranging session key, and derive a derived ranging key via a key derivation cascade applied to the message session key and the sparse ranging input, the derived ranging key to encrypt data transmitted during a ranging session.

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