18231704. TECHNIQUES FOR RECEIVING FRAMES WITH SECURELY SCRAMBLED PAYLOAD simplified abstract (Apple Inc.)

TECHNIQUES FOR RECEIVING FRAMES WITH SECURELY SCRAMBLED PAYLOAD

Organization Name

Apple Inc.

Inventor(s)

Jarkko L. Kneckt of Los Gatos CA (US)

Debashis Dash of San Jose CA (US)

Elliot S. Briggs of Carmel CA (US)

Nisan Reuven of Rehovot (IL)

Qi Wang of Sunnyvale CA (US)

Sidharth R. Thakur of San Jose CA (US)

Su Khiong Yong of Palo Alto CA (US)

Yong Liu of Campbell CA (US)

Tianyu Wu of Monterey CA (US)

TECHNIQUES FOR RECEIVING FRAMES WITH SECURELY SCRAMBLED PAYLOAD - A simplified explanation of the abstract

This abstract first appeared for US patent application 18231704 titled 'TECHNIQUES FOR RECEIVING FRAMES WITH SECURELY SCRAMBLED PAYLOAD

Simplified Explanation

The abstract describes a technique for secure scrambling in communication devices. The method involves receiving a data frame from another device and determining its frame type based on a preamble. The device then applies a frame type-based key and a service field value to descramble the frame's MAC header. The payload is descrambled by de-obfuscating the MAC header. The device also selects a scrambler seed for scrambling an ACK message and scrambles the message based on the selected seed.

• The technique involves receiving and descrambling data frames in communication devices.
• The frame type is determined based on the preamble of the frame.
• A frame type-based key and service field value are used to implement the descrambling process for the MAC header.
• The payload is descrambled by de-obfuscating the MAC header.
• The technique also includes selecting a scrambler seed for scrambling ACK messages.
• The ACK message is scrambled based on the selected seed.

Potential Applications:

• Secure communication between devices
• Wireless communication protocols
• Data transmission in networks

Problems Solved:

• Ensuring secure scrambling of data frames
• Preventing unauthorized access to transmitted data
• Protecting the integrity of communication protocols

Benefits:

• Enhanced security in communication devices
• Improved privacy and confidentiality of transmitted data
• Efficient and reliable data transmission

Original Abstract Submitted

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.