상세정보
학술지
Differential Power Analysis on Countermeasures Using Binary Signed Digit Representations
- 저자
- Tae Hyun Kim, 한동국, Katsuyuki Okeya, Jongin Lim
- 발행일
- 200710
- 출처
- ETRI Journal, v.29 no.5, pp.619-632
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 07MK1800, 안전한 RFID/USN을 위한 정보보호 기술 개발, 정교일
- 초록
- Side channel attacks are a very serious menace to embedded devices with cryptographic applications. To counteract such attacks many randomization techniques have been proposed. One efficient technique in elliptic curve cryptosystems randomizes addition chains with binary signed digit (BSD) representations of the secret key. However, when such countermeasures have been used alone, most of them have been broken by various simple power analysis attacks. In this paper, we consider combinations which can enhance the security of countermeasures using BSD representations by adding additional countermeasures. First, we propose several ways the improved countermeasures based on BSD representations can be attacked. In an actual statistical power analysis attack, the number of samples plays an important role. Therefore, we estimate the number of samples needed in the proposed attack.
- KSP 제안 키워드
- Addition chains, Differential Power Analysis, Elliptic curve cryptosystems, Embedded Devices, Side Channel Attacks, Signed Digit, Statistical power, cryptographic applications, power analysis attacks, secret key, simple power analysis