Tamper-resistant cryptographic hardware

Abstract

Cryptosystems are widely used for achieving data confidentiality and authenticated access control. Recent cryptographic algorithms such as AES or RSA are computationally safe in the sense that it is practically impossible to reveal key information from a pair of plain and cipher texts if a key of sufficient length is used. A malicious attacker aims to reveal a key by exploiting implementation flaws in cryptographic modules. Even if there are no flaws in the software, the attacker will try to extract a secret key stored in the security hardware. The side-channel attacks (SCAs) are low cost and powerful against cryptographic hardware. The attacker exploits side-channel information such as power or electro-magnetic emission traces on the cryptographic circuits. In this paper, we will introduce the principle of SCAs and the countermeasures against SCAs.

SoK

“…Furthermore, secure cores that are dedicated for cryptographic operations are increasingly present in modern computer processor chips. Operations performed inside such cores lower the side-channel information leakage, forcing attackers to use more sensitive measuring equipment and sophisticated pre-processing of EM traces in order to perform key retrieval attacks [35,74].…”

Lightweight Security Hardware Architecture Using DWT and AES Algorithms

“…Threats against automobiles and infrastructure such as power plants are focused on. Security modules including cryptosystems begin to be introduced in embedded systems used in these fields [1]. Spec-ifications for new models are classified data until the car is exhibited in a special auto show.…”