Association Identifier Change and Obfuscation in WLAN Communication

    公开(公告)号:US20240406906A1

    公开(公告)日:2024-12-05

    申请号:US18325213

    申请日:2023-05-30

    Applicant: Apple Inc.

    Abstract: An electronic device is described. This electronic device may associate with a second electronic device (such as an access point) in a WLAN. While associating or associated with the second electronic device, the electronic device may receive, from the second electronic device, an AID corresponding to the electronic device for use when communicating frames in the WLAN. Moreover, while associated with the second electronic device, the electronic device may obtain a second AID corresponding to the electronic device for use when communicating second frames in the WLAN, where the associating includes replacing the AID with the second AID. Note that obtaining the second AID may include: the electronic device selecting the second AID from a predefined set of AIDs, which were previously received from the second electronic device; or the electronic device receiving, from the second electronic device, the second AID.

    TECHNIQUES FOR RECEIVING FRAMES WITH SECURELY SCRAMBLED PAYLOAD

    公开(公告)号:US20240049208A1

    公开(公告)日:2024-02-08

    申请号:US18231704

    申请日:2023-08-08

    Applicant: Apple Inc.

    CPC classification number: H04W72/0466 H04L5/0055

    Abstract: Techniques are directed toward secure scrambling. An example method includes receiving, by a first communication device a physical layer protocol data unit (PPDU) frame from a second communication device. The first communication device can determine a PPDU frame type based at least in part on a preamble of the PPDU frame. The first communication device can apply a PPDU frame type-based key and a determined service field value to implement a descrambling process for a medium access control (MAC) header of the PPDU frame. The first communication device can descramble a payload based at least in part on de-obfuscating the MAC header. The first communication device selecting a scrambler seed for scrambling an acknowledgement (ACK) message. The first communication device scrambling the ACK message based on the selected scrambler seed.

    TECHNIQUES FOR TRANSMITTING FRAMES WITH SECURELY SCRAMBLED PAYLOAD

    公开(公告)号:US20240048542A1

    公开(公告)日:2024-02-08

    申请号:US18231703

    申请日:2023-08-08

    Applicant: Apple Inc.

    CPC classification number: H04L63/0485

    Abstract: Techniques are directed toward secure scrambling. An example method includes a first device encrypting a payload to be included in a physical layer protocol data unit (PPDU) frame. The determining a PPDU frame type based at least in part on an association with a second device. The first device can select a key based at least in part on the association with second device. The first device can encrypt a payload to be included in a physical layer protocol data unit (PPDU) frame. The first device can determine a PPDU frame type based at least in part on an association with a second communication device. The first device can obfuscate the field of the MAC header. The first device can scramble the encrypted payload using a service field value. The first device can transmit the PPDU frame to the second device.

    Privacy Enhanced BSS and Discovery Mechanisms

    公开(公告)号:US20230147562A1

    公开(公告)日:2023-05-11

    申请号:US17949910

    申请日:2022-09-21

    Applicant: Apple Inc.

    CPC classification number: H04W12/037 H04W12/06

    Abstract: Systems, methods, and mechanisms for a privacy enhanced basic service set (BSS), including privacy enhancements for both access points and wireless stations as well as privacy enchantments for authentication, association, and discovery operations. Further, the systems, methods, and mechanisms disclosed may continue to support legacy wireless stations and are thus, backward compatible. A station may communicate with a legacy BSS of a wireless network to transition to a PE BSS of the wireless network. The station may receive, from the PE BSS of the wireless network, an encrypted beacon, wherein the encrypted beacon is decoded based on information received from the legacy BSS and perform, with the PE BSS of the wireless network, an encrypted handshake procedure to authenticate and associate with the PE BSS of the wireless network.

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