TY - JOUR
T1 - Secret recovery from electromagnetic emissions
AU - Liu, Hongying
AU - Fan, Yibo
AU - Goto, Satoshi
PY - 2012
Y1 - 2012
N2 - Electromagnetic emissions leak confidential data of cryptographic devices. The electromagnetic emission has been reported as an important side channel for cryptanalysis. Electromagnetic Analysis (EMA) exploits the external radiation of cryptographic devices during encryption to reveal secret keys. The performance of EMA depends on the acquired signals to a large extent. To protect the devices from attacks, noises are introduced in the side channel either by unintentional interference from surroundings or elaborate design from engineers. Thus the secret recovery becomes difficult and even unavailable. In this paper, we propose two signal processing techniques to counteract both of these noises. The bandpass filtering and independent component analysis are widely used in other areas. We demonstrate their applications to EMA against the encryption algorithms on application-specific integrated circuit. With these techniques, the secret keys are extracted successfully and rapidly.
AB - Electromagnetic emissions leak confidential data of cryptographic devices. The electromagnetic emission has been reported as an important side channel for cryptanalysis. Electromagnetic Analysis (EMA) exploits the external radiation of cryptographic devices during encryption to reveal secret keys. The performance of EMA depends on the acquired signals to a large extent. To protect the devices from attacks, noises are introduced in the side channel either by unintentional interference from surroundings or elaborate design from engineers. Thus the secret recovery becomes difficult and even unavailable. In this paper, we propose two signal processing techniques to counteract both of these noises. The bandpass filtering and independent component analysis are widely used in other areas. We demonstrate their applications to EMA against the encryption algorithms on application-specific integrated circuit. With these techniques, the secret keys are extracted successfully and rapidly.
KW - AES
KW - Camellia
KW - Electromagnetic analysis (EMA)
KW - Electromagnetic emissions
KW - Side channel analysis (SCA)
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U2 - 10.1166/asl.2012.2080
DO - 10.1166/asl.2012.2080
M3 - Article
AN - SCOPUS:84864205785
VL - 7
SP - 182
EP - 186
JO - Advanced Science Letters
JF - Advanced Science Letters
SN - 1936-6612
ER -