Title: Moving target defense for a serial communications system

Abstract

A moving target defense scheme for a serial communications system is disclosed herein. A bus controller generates and broadcasts a nonce to remote terminals over a bus. The bus controller and the remote terminals generate a randomized sequence based upon the nonce and a shared secret that is shared between the bus controller and the remote terminals. The bus controller broadcasts first messages over the bus on first addresses that are derived from first portions of the randomized sequence. The remote terminals listen for the first messages that are broadcast over the bus on the first addresses. The bus controller broadcasts a shift message that causes the remote terminals to listen for second messages that are broadcast over the bus on second addresses that are derived from second portions of the randomized sequence.

Inventors:

Jenkins, Christipher D.

Issue Date:

2021-09-28

Research Org.:

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:

USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:

1840503

Patent Number(s):

11133927

Application Number:

16/353,039

Assignee:

National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)

Patent Classifications (CPCs):

G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION

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G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING

G06F13/1668 - {Details of memory controller}
G06F13/4282 - {on a serial bus, e.g. I2C bus, SPI bus
G06F21/602 - {Providing cryptographic facilities or services}
G06F21/606 - {by securing the transmission between two devices or processes}
G06F2221/2103 - Challenge-response
G06F7/582 - {Pseudo-random number generators}

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION

H04L2209/08 - Randomization, e.g. dummy operations or using noise
H04L63/0407 - {wherein the identity of one or more communicating identities is hidden
H04L63/0428 - {wherein the data content is protected, e.g. by encrypting or encapsulating the payload}
H04L63/0435 - {wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption
H04L63/145 - {the attack involving the propagation of malware through the network, e.g. viruses, trojans or worms}
H04L9/0662 - {with particular pseudorandom sequence generator}
H04L9/085 - {Secret sharing or secret splitting, e.g. threshold schemes}
H04L9/0897 - {involving additional devices, e.g. trusted platform module [TPM], smartcard or USB}

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DOE Contract Number:  

NA0003525

Resource Type:

Patent

Resource Relation:

Patent File Date: 03/14/2019

Country of Publication:

United States

Language:

English