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Improvement of Günther's identity-based key exchange protocol

Improvement of Günther's identity-based key exchange protocol

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The author proposes a modification of Günther's key exchange protocol. The modified protocol reduces the number of passes to half, and so minimises the communication between the parties. The protocol may also provide perfect forward secrecy, without additional transmitted data.

Inspec keywords: protocols; cryptography

Other keywords: Gunther key exchange protocol; protocol modification; perfect forward secrecy; identity-based key exchange protocol

Subjects: Cryptography theory; Protocols; Data security; Cryptography; Protocols

References

    1. 1)
      • Günther, C.: `An identity-based key-exchange protocol', Advances in Cryptology (Proc. Eurocrypt '89), Lecture Notesin Computer Science, 1990, 434, Springer-Verlag, p. 29–37.
    2. 2)
      • Okamoto, E.: `Key distribution systems based on identification information', Advances in Cryptology (Proc. Crypto '87), Lecture Notes inComputer Science, 1988, 293, Springer-Verlag, p. 194–202.
    3. 3)
      • Saeednia, S., Safavi-Naini, R.: `A new identity-based key exchange protocol minimizing computation andcommunication', Information Security Workshop (Proc. ISW '97), Lecture Notesin Computer Science, 1998, 1396, Springer-Verlag, p. 328–334.
    4. 4)
      • W. Diffie , M.E. Hellman . New directions in cryptography. IEEE Trans. Inf. Theory , 644 - 654
    5. 5)
      • Saeednia, S.: `Identity-based and self-certified key-exchange protocols', Information Security and Privacy (Proc. ACISP '97), LectureNotes in Computer Science, 1997, 1270, Springer-Verlag, p. 303–313.
    6. 6)
      • Shamir, A.: `Identity-based cryptosystems and signature schemes', Advances in Cryptology (Proc. Crypto '84), Lecture Notes inComputer Science, 1985, 196, Springer-Verlag, p. 47–53.
    7. 7)
      • Bauspieß, F., Knobloch, H.: `How to keep authenticity alive in a computer network', Advances in Cryptology (Proc. Eurocrypt '89), Lecture Notesin Computer Science, 1990, 434, Springer-Verlag, p. 38–46.
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