Secure wireless low-power wake-up

• US 9,801,060 B2
• Filed: 11/05/2015
• Issued: 10/24/2017
• Est. Priority Date: 11/05/2015
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Min, Alexander W, Park, Minyoung
• Primary Examiner(s): Abbaszadeh, Jaweed A
• Assistant Examiner(s): Derose, Volvick
• Application Number:
  US14/933,618
• Publication Number:
  US 20170134943A1
• Time in Patent Office: 719 Days
• Field of Search: 713323
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: G06F 1/3209 Monitoring remote activity, e.g. over telephone lines or network connections
• CPC Class Codes: G06F 1/3278 Power saving in modem or I/O interface
• CPC Class Codes: H04L 2209/80 Wireless network architectures or network communication protocols for wireless network security H04W12/00
• CPC Class Codes: H04L 63/1441 Countermeasures against malicious traffic countermeasures against attacks on cryptographic mechanisms H04L9/002
• CPC Class Codes: H04L 9/3242 involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC
• CPC Class Codes: H04W 12/04 Key management, e.g. using generic bootstrapping architecture [GBA]
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 12/125 Protection against power exhaustion attacks
• CPC Class Codes: H04W 52/0212 managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: H04W 52/0235 where the received signal is a power saving command
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Systems and techniques for secure wireless low-power wake-up are described herein. A low-power wake-up receiver (LP-WUR) of a wireless device may receive a wake-up signal. The LP-WUR may extract a receiver ID token from the wake-up signal. The LP-WUR may then verify the receiver ID token and enable a main transceiver, different than the LP-WUR, when the verification passes to engage in wireless communications.

Claims

1. At least one non-transitory machine readable medium including instructions that, when executed by a machine, configure the machine to:

generate a receiver identification (ID) token via generation of a new key value and creation of a hash-based message authentication code (HMAC) using the new key and an ID of a transceiver of the machine, the resulting HMAC being the receiver ID token;

store the receiver ID token in a storage area accessible by a wake-up signal at a low-power wake-up receiver (LP-WUR) on the machine when the LP-WUR is enabled, the LP-WUR being a different radio than the transceiver;

transmit, by the transceiver, the new key value to a remote transceiver;

disable the transceiver following a transmission of the new key value;

receive a wake-up signal at the LP-WUR from the remote transceiver;

extract, by the LP-WUR, the receiver ID token from the wake-up signal;

perform, by the LP-WUR, verification on the receiver ID token by a bitwise comparison, without additional processing, of the receiver ID token and the stored receiver ID token, the verification passing if the bits of the receiver ID token match the bits of the stored receiver ID token; and

enable, by the LP-WUR, the transceiver when the verification passes.

2. The machine readable medium of claim 1, wherein to generate the receiver ID token by the transceiver includes configuring the machine to:

verify that the new key is different than a previous key last used for the wake-up signal.

3. The machine readable medium of claim 1, wherein to enable the transceiver includes configuring the machine to disable the LP-WUR.

4. The machine readable medium of claim 3, wherein the instructions cause a transceiver of the machine to transmit a response frame to an originator of the wake-up signal, the response frame indicating that the transceiver is enabled.

5. The machine readable medium of claim 4, wherein the response frame is a wake-up acknowledgment (ACK) frame.

6. The machine readable medium of claim 4, wherein to disable the LP-WUR is in response to transmitting the response frame.

7. At least one non-transitory machine readable medium including instructions to perform secure wireless low-power wake-up, the instructions, when executed by a machine, cause the machine to:

receive a new key value and an identification (ID) from a last secure communication with a transceiver of a remote device prior to the transceiver being disabled, the transceiver being disabled in response to sending the new key;

create a hashed-based message authentication code (HMAC) using the new key and an ID of the transceiver, wherein the HMAC is a receiver ID token; and

transmit a wake-up signal that includes the receiver token to a low-power wake-up receiver (LP-WUR) on the remote device, to enable the transceiver and permit communication with the remote device via the transceiver.

8. The machine readable medium of claim 7, wherein the instructions cause the machine to:

verify that the new key from the last secure communication with the transceiver is different than a session key of a previous wake-up signal; and

use the new key when it is different than the session key of the previous wake-up signal.

9. The machine readable medium of claim 7, wherein the instructions cause the machine to:

receive a response packet from the transceiver indicating that the transceiver is awake; and

transmit data to the remote device via the transceiver.

10. An apparatus of a wireless communication device comprising:

a transceiver to;

generate a receiver identification (ID) token via generation of a new key value and creation of a hash-based message authentication code (HMAC) using the new key and an ID of a transceiver of the machine, the resulting HIM AC being the receiver ID token;

store the receiver ID token in a storage area of the apparatus that is accessible by a wake-up signal at a low-power wake-up receiver (LP-WUR) of the apparatus when the LP-WUR is enabled, the LP-WUR being a different radio than the transceiver;

transmit the new key value to a remote transceiver; and

disable itself following a transmission of the new key value;

the LP-WUR comprising;

a receiver to receive a wake-up signal;

a decoder to extract the receiver ID token from the wake-up signal;

a comparator to perform verification on the receiver ID token by a bitwise comparison, without additional processing, of the receiver ID token and the stored receiver ID token, the verification passing if the bits of the receiver ID token match the bits of the stored receiver ID token; and

a controller to enable the transceiver the verification passes.

11. The apparatus of claim 10, wherein, to enable the transceiver, the controller is to disable the LP-WUR.

12. The apparatus of claim 11, wherein the transceiver is to transmit a response frame to an originator of the wake-up signal, the response frame indicating that the transceiver is enabled.

13. The apparatus of claim 12, wherein the LP-WUR is disabled in response to transmission of the response frame.

14. The apparatus of claim 12, wherein the response frame is a wake-up acknowledgment (ACK) frame.

15. The apparatus of claim 10, wherein to generate the receiver ID token, the transceiver is to verify that the new key is different than a previous key last used for the wake-up signal.

16. An apparatus of wireless communication device for secure wireless low-power wake-up, the apparatus comprising:

a receiver to receive a new key value and an identification (ID) from a last secure communication with a transceiver of a remote device prior to the receiver being disabled, the transceiver being disabled in response to sending the new key;

a cryptographic component to create a hashed-based message authentication code (HMAC) using the new key and an ID of the transceiver, wherein the HMAC is a receiver ID token;

an encoder to encode the receiver II) token in a wake-up signal; and

a transmitter to communicate the wake-up signal to a low-power wake-up receiver (LP-WUR) on the remote device to enable the transceiver and permit communication with the remote device via the transceiver.

17. The apparatus of claim 16, wherein the transmitter is to receive the new key from a last secure communication with the transceiver.

18. The apparatus of claim 16, wherein the cryptographic component is to:

verify that the new key from the last secure communication with the transceiver is different than a session key of a previous wake-up signal; and

use the new key when it is different than the session key of the previous wake-up signal.

19. The apparatus of claim 16, wherein the transmitter is to:

receive a response packet from the transceiver indicating that the transceiver is awake; and

transmit data to the transceiver.