Method and system for encryption using a radio frequency fingerprint

Patent metadata

Field	Value
Publication number	US-2020036710-A1
Application number	US-201816045323-A
Country	US
Kind code	A1
Filing date	Jul 25, 2018
Priority date	Jul 25, 2018
Publication date	Jan 30, 2020
Grant date	—

Abstract

Aspects of the present disclosure include methods, apparatus, and computer readable medium for storing encrypted data including receiving a radio frequency signal and data to be encrypted, identifying a radio frequency fingerprint of the signal, generating a numerical representation of the radio frequency fingerprint, generating an encryption key using at least a portion of the representation, encrypting the data using the encryption key, and storing the encrypted data.

First claim

What is claimed is:

1 . A method of storing encrypted data, comprising:
receiving a radio frequency signal and data to be encrypted; identifying a radio frequency fingerprint of the signal; generating a numerical representation of the radio frequency fingerprint; generating an encryption key using at least a portion of the representation; encrypting the data using the encryption key; and storing the encrypted data.

2 . The method of claim 1 , wherein the numerical representation of the radio frequency fingerprint includes numbers indicating at least one of a transmission power, a frequency spectrum, a jitter, a rise time, and a fall time of the radio frequency signal.

3 . The method of claim 1 , wherein the encryption key includes 64 bits, 128 bits, 256 bits, 512 bits, or 1024 bits.

4 . The method of claim 1 , wherein storing the encrypted data further includes storing the encrypted data in an unsecure memory.

5 . The method of claim 1 , further comprising discarding the encryption key after encrypting the data.

6 . The method of claim 1 , further comprising:
receiving a second radio frequency signal; identifying a second radio frequency fingerprint of the second radio frequency signal; generating a second numerical representation of the second radio frequency fingerprint; generating a decryption key using at least a portion of the second representation; retrieving the encrypted data; and decrypting the encrypted data using the decryption key.

7 . The method of claim 6 , further comprising discarding the decryption key after decrypting the encrypted data.

8 . A system, comprising:
a memory; a cryptography module; a radio frequency module; one or more processors operatively connected to the memory, the cryptography module, and the radio frequency module, the one or more processors being configured to:
receive a radio frequency signal and data to be encrypted;
identify a radio frequency fingerprint of the signal;
generate a numerical representation of the radio frequency fingerprint;
generate an encryption key using at least a portion of the representation;
encrypt the data using the encryption key; and
store the encrypted data.

9 . The system of claim 8 , wherein the numerical representation of the radio frequency fingerprint includes numbers indicating at least one of a transmission power, a frequency spectrum, a jitter, a rise time, and a fall time of the radio frequency signal.

10 . The system of claim 8 , wherein the encryption key includes 64 bits, 128 bits, 256 bits, 512 bits, or 1024 bits.

11 . The system of claim 8 , wherein storing the encrypted data further includes storing the encrypted data in an unsecure memory.

12 . The system of claim 8 , wherein the one or more processors are further configured to discard the encryption key after encrypting the data.

13 . The system of claim 8 , wherein the one or more processors are further configured to:
receive a second radio frequency signal; identify a second radio frequency fingerprint of the second radio frequency signal; generate a second numerical representation of the second radio frequency fingerprint; generate a decryption key using at least a portion of the second representation; retrieve the encrypted data; and decrypt the encrypted data using the decryption key.

14 . The system of claim 13 , wherein the one or more processors are further configured to discard the decryption key after decrypting the encrypted data.

15 . A computer readable medium having instructions stored therein that, when executed by one or more processors, cause the one or more processors to:
receive a radio frequency signal and data to be encrypted; identify a radio frequency fingerprint of the signal; generate a numerical representation of the radio frequency fingerprint; generate an encryption key using at least a portion of the representation; encrypt the data using the encryption key; and store the encrypted data.

16 . The computer readable medium of claim 15 , wherein the numerical representation of the radio frequency fingerprint includes numbers indicating at least one of a transmission power, a frequency spectrum, a jitter, a rise time, and a fall time of the radio frequency signal.

17 . The computer readable medium of claim 15 , wherein storing the encrypted data further includes storing the encrypted data in an unsecure memory.

18 . The computer readable medium of claim 15 , further comprises instructions stored therein that, when executed by the one or more processors, cause the one or more processors to discard the encryption key after encrypting the data.

19 . The computer readable medium of claim 15 , further comprises instructions stored therein that, when executed by the one or more processors, cause the one or more processors to:
receive a second radio frequency signal; identify a second radio frequency fingerprint of the second radio frequency signal; generate a second numerical representation of the second radio frequency fingerprint; generate a decryption key using at least a portion of the second representation; retrieve the encrypted data; and decrypt the encrypted data using the decryption key.

20 . The computer readable medium of claim 19 , further comprises instructions stored therein that, when executed by the one or more processors, cause the one or more processors to discard the decryption key after decrypting the encrypted data.

Assignees

• Honda Motor Co Ltd

Inventors

• Khanna Rahul
• Moon John P

Classifications

• H04L2209/805

  Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor · CPC title

• H04L9/0866

  involving user or device identifiers, e.g. serial number, physical or biometrical information, DNA, hand-signature or measurable physical characteristics · CPC title

• H04L9/0643

  Hash functions, e.g. MD5, SHA, HMAC or f9 MAC · CPC title

• H04W12/06

  Authentication · CPC title

• H04L63/0876 Primary

  based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint · CPC title