Adversary Model: Adaptive Chosen Ciphertext Attack with Timing Attack

TL;DR

This paper introduces a new adversary model combining adaptive chosen ciphertext attacks with timing attacks, emphasizing practical security concerns in cryptographic protocols.

Contribution

It proposes the CCA2-TA model, integrating timing attack considerations into adaptive chosen ciphertext attack frameworks, extending previous security models.

Findings

The model demonstrates increased vulnerability in existing protocols.

Timing attack integration reveals new attack vectors.

Enhanced security proofs for protocols under CCA2-TA.

Abstract

We have introduced a novel adversary model in Chosen-Ciphertext Attack with Timing Attack (CCA2-TA) and it was a practical model because the model incorporates the timing attack. This paper is an extended paper for 'A Secure TFTP Protocol with Security Proofs'. Keywords - Timing Attack, Random Oracle Model, Indistinguishabilit, Chosen Plaintext Attack, CPA, Chosen Ciphertext Attack, IND-CCA1, Adaptive Chosen Ciphertext Attack, IND-CCA2, Trivial File Transfer Protocol, TFTP, Security, Trust, Privacy, Trusted Computing, UBOOT, AES, IOT, Lightweight, Asymmetric, Symmetric, Raspberry Pi, ARM.