Secure communication between a contact lens and an accessory device
AssigneeTectus Corporation
InventorsRenaldi Winoto, Paul Lambert, Ashkan Olyaei, Michael Wiemer
Life of this patent
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Abstract
Described herein are systems and methods that allow for secure wireless communication between a contact lens system and an accessory device to protect sensitive data and prevent unauthorized access to confidential information. In certain embodiments, tampering attempts by potential attackers are thwarted by using a Physically Unclonable Functions (PUF) circuit that is immune to reverse engineering. In addition, sensors monitor a to-be-protected electronic device to detect tampering attempts and physical attacks to ensure the physical integrity of the communication system.
Claims14
A secure wireless contact lens system comprising:
- an accessory device comprising:
- a first key stored in a first memory;
- a handshake unit coupled to receive the first key, the handshake unit performs a handshake routine to define a plurality of parameters used during a session;
- a first crypto core that receives data and the first key, the first crypto core uses the first key to encrypt at least some of the data to generate a cipher text;
- and
- a transmitter coupled to the first crypto core, the transmitter, in response to receiving the cipher text from the crypto core, transmits the cipher text via a wireless communication channel;
- and
- a contact lens comprising:
- a second key stored in a second memory, the second key is derived from a random session key generated within the contact lens, the random session key serves as a master key to derive the second key;
- an energy unit that harvests power from an electromagnetic field provided by the accessory device;
- a receiver to receive the cipher text via the wireless communication channel;
- and
- a second crypto core coupled to receive power from the energy unit and receive the cipher text, the second crypto core decrypts the cipher text using the second key.
A secure wireless contact lens comprising:
- a transceiver that transmits and receives cipher text via a wireless communication channel;
- a handshake unit that performs a handshake operation with an accessory device that defines at least one secure parameter used during a session;
- a memory that stores an encryption key derived from a random session key, the random session key is generated within the secure wireless contact lens and serves as a master key to derive the encryption key;
- an energy unit that harvests power from an electromagnetic field provided by the accessory device;
- and
- a crypto core coupled to the transceiver, the memory and energy unit, the crypto core encrypts, using the encryption key, to encrypt data to be transmitted on the wireless communication channel and to decrypt cipher text received from the accessory device.
Dependencies are inferred from the claim text.