Distance-bounding protocol

A Distance-Bounding Protocol is a cryptographic method used to verify the distance between two parties in a communication system, typically to thwart various types of attacks such as replay attacks, man-in-the-middle attacks, and to prevent fraudulent proximity claims. These protocols allow one party (the prover) to demonstrate to another party (the verifier) that they are within a certain physical distance, typically defined in terms of time delays in communication.