Side channel attacks and countermeasures on pairing based cryptosystems over binary fields

  • Authors:
  • Tae Hyun Kim;Tsuyoshi Takagi;Dong-Guk Han;Ho Won Kim;Jongin Lim

  • Affiliations:
  • Center for Information and Security Technologies(CIST), Korea University, Seoul, Korea;FUTURE UNIVERSITY-HAKODATE, Japan;Electronics and Telecommunications Research Institute(ETRI), Korea;Electronics and Telecommunications Research Institute(ETRI), Korea;Center for Information and Security Technologies(CIST), Korea University, Seoul, Korea

  • Venue:
  • CANS'06 Proceedings of the 5th international conference on Cryptology and Network Security
  • Year:
  • 2006

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Abstract

Pairings on elliptic curves have been used as cryptographic primitives for the development of new applications such as identity based schemes. For the practical applications, it is crucial to provide efficient and secure implementations of the pairings. There have been several works on efficient implementations of the pairings. However, the research for secure implementations of the pairings has not been thoroughly investigated. In this paper, we investigate vulnerability of the pairing used in some pairing based protocols against side channel attacks. We propose an efficient algorithm secure against such side channel attacks of the eta pairing using randomized projective coordinate systems for the pairing computation.