Identity-based authentication to address relay attacks in temperature sensor-enabled smartcards

Identity-based encryption has been proposed as an alternative to public-key cryptography, which relies on the existence of public-key infrastructure and a reliable and trustworthy certification authority. With identity-based encryption, the public key is derived from users' identity information such as email address or phone number and this facilitates ease of first-time interaction between users. Regardless of the type of public-or symmetric-key cryptography that is used for authentication, the probability of successful relay attack on such systems remains high. We incorporate temperature sensor-based information in a mutual authentication protocol for smartcards with identity-based encryption to decrease the success probability of relay attacks.