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Physical attacks are a serious threat for secure embedded devices. Attacks based on analysis of electromagnetic emissions of such devices have proven to be particularly dangerous, more than power-based analyses, as they can target even small and specific portion of the chip. The electromagnetic waves can be used effectively also as an active mean of attack, by perturbing the secure computations. In...
Side-Channel Attacks (SCA) are considered a serious threat against embedded cryptography. Therefore security critical chips must be tested for SCA resistance before deployment or certification. SCA are powerful but can need a lot of computation power, especially in the presence of countermeasures. With the advancement of electromagnetic (EM) measurement techniques in side-channel, high quality traces...
Information leakage via electromagnetic (EM) radiation is an emerging issue for designers and users of electrical information devices. The importance of estimating the propagation area of information leakage is increasing due to the high demand for protecting such devices from eavesdroppers. We propose an efficient method for estimating the propagation area of information leakage via an EM field....
Advanced encryption standard (AES) cores suffer from information leakage through power supply currents, even with the wave dynamic differential logic (WDDL) known as one of the most tolerable countermeasure design styles against side channel attacks (SCA). The set of plaintexts having bitlevel biased activities are produced with a known secret key and used for diagnosing the vulnerability of AES cores...
This paper presents an EMA (electromagnetic analysis) against an RSA software on an embedded operating system (OS) and its counter measure First, we describe a pre processing step to find an appropriate observation point for EMA, where the EM radiation caused by cryptographic operations can be observed in an accurate manner. We employ a specific input pattern, which is suitable for observing EM radiation...
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