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Efficient and Leakage-Resilient Authenticated Key Transport Protocol Based on RSA

  • SeongHan Shin
  • Kazukuni Kobara
  • Hideki Imai
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3531)

Abstract

Let us consider the following situation: (1) a client, who communicates with a variety of servers, remembers only one password and has insecure devices with very-restricted computing power and built-in memory capacity; (2) the counterpart servers have enormous computing power, but they are not perfectly secure; (3) neither PKI (Public Key Infrastructures) nor TRM (Tamper-Resistant Modules) is available.

Our main goal of this paper is to provide its security against the leakage of stored secrets as well as to attain high efficiency on client’s side. For those, we propose an efficient and leakage-resilient RSA-based Authenticated Key Establishment (RSA-AKE) protocol suitable for the above situation whose authenticity is based on password and an additional stored secret. The RSA-AKE protocol is provably secure in the random oracle model where an adversary is given the stored secret of client and the RSA private key of server. In terms of computation costs, the client is required to compute only one modular exponentiation with an exponent e (e ≥ 3) in the protocol execution. We also show that the RSA-AKE protocol has several security properties and efficiency over the previous ones of their kinds.

Keywords

Random Oracle Model Modular Exponentiation Protocol Execution Dictionary Attack Perfect Forward Secrecy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • SeongHan Shin
    • 1
  • Kazukuni Kobara
    • 1
  • Hideki Imai
    • 1
  1. 1.Institute of Industrial ScienceThe University of TokyoTokyoJapan

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