System and method for providing secure and reliable communication over a low-energy wireless communication protocol

1. A method for encrypting a data frame of a low-power communication protocol, comprising:

providing an input data frame, the input date frame includes a random number, a unique identifier, and a payload data;

encrypting the payload data;

generating a Message Integrity Code (MIC),

generating a rotating identifier by encrypting the unique identifier; and

generating an output frame based on the generated rotating identifier, the generated MIC, and the encrypted payload data.

2. The method of claim 1 , wherein the input data frame further includes a vendor header and a group identifier.

3. The method of claim 1 , further comprising:

generating an integrity key based on the random number and a data encryption key,

wherein the payload data is encrypted based on the generated integrity key and the payload data.

4. The method of claim 3 , wherein generating the MIC further comprises:

formatting the random number, a vendor header, a group identifier, the unique identifier of the input data frame, and the encrypted payload data, wherein the vendor header and the group identifier are part of the input data frame;

formatting a counter block, the counter block including the random number;

obtaining a Key Derivation Function (KDF) based on an identity key and the random number;

deriving a Counter with Cipher Block Chaining-Message Authentication Code (CBCMAC) based on the obtained KDF and the formatted counter block;

generating an identity encryption key based on the formatted counter block including the random number; and

combining the generated identity encryption key and the CBCMAC.

5. The method of claim 4 , wherein the generating the rotating identifier further comprises:

applying the generated identity encryption key to the unique identifier.

6. The method of claim 1 , wherein the low-power communication protocol is a BLE protocol.

7. The method of claim 1 , wherein the method is performed by a wireless device, wherein the wireless device is at least a battery-free IoT tag.

8. A battery-free IoT device for encrypting a data frame of a low-power communication protocol, comprising:

a microcontroller; and

a memory, the memory containing instructions that, when executed by the microcontroller, configures the IoT device to:

provide an input data frame, the input data frame including a random number, a unique identifier, and a payload data;

encrypt the payload data;

generate a Message Integrity Code (MIC),

generate a rotating identifier by encrypting the unique identifier; and

generate an output frame based on the generated rotating identifier, the generated MIC, and the encrypted payload data.

9. The battery-free IoT device of claim 8 , wherein the input data frame further includes a vendor header and a group identifier.

10. The battery-free IoT device of claim 8 , wherein the IoT device is further configured to:

generate an integrity key based on the random number and a data encryption key;

wherein the payload data is encrypted based on the generated integrity key and the payload data.

11. The battery-free IoT device of claim 10 , wherein the generating the MIC further comprises:

formatting the random number, a vendor header, a group identifier, the unique identifier of the input data frame, and the encrypted payload data, wherein the vendor header and the group identifier are part of the input data frame;

formatting a counter block, the counter block including the random number;

obtaining a Key Derivation Function (KDF) based on an identity key and the random number;

deriving a Counter with Cipher Block Chaining-Message Authentication Code (CBCMAC) based on the obtained KDF and the formatted counter block;

generating an identity encryption key based on the formatted counter block including the random number; and

combining the generated identity encryption key and the CBCMAC.

12. The battery-free IoT device of claim 11 , wherein the generating the rotating identifier further comprises:

applying the generated identity encryption key to the unique identifier.

13. The battery-free IoT device of claim 8 , wherein the low-power communication protocol is a BLE protocol.

14. A The battery-free IoT device of claim 10 , further comprising:

an energy harvester coupled to a capacitor and an antenna; and

a Power Management Unit (PMU) coupled to the energy harvester, the microcontroller, and a System on Chip (SoC), wherein

the SoC includes an Oscillator Calibration Circuit (OCC), and

the memory is coupled to the microcontroller and the SoC.

15. A wireless device for encrypting a data frame of a low-power communication protocol, comprising:

a microcontroller; and

a memory, the memory containing instructions that, when executed by the microcontroller, configures the processor to:

provide an input data frame, the input data frame including a random number, a unique identifier, and a payload data;

encrypt the payload data;

generate a Message Integrity Code (MIC)

generate a rotating identifier by encrypting the unique identifier; and

generate an output frame based on the generated rotating identifier, the generated MIC, and the encrypted payload data.