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Toward Dynamic Attribute-Based Signcryption (Poster)

  • Keita Emura
  • Atsuko Miyaji
  • Mohammad Shahriar Rahman
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6812)

Abstract

This paper presents an ongoing work toward the proposal of the new concept of the attribute-based cryptosystem. In SCN2010, Gagné, Narayan, and Safavi-Naini proposed attribute-based signcryption (ABSC) with threshold structure. As in ciphertext-policy attribute-based encryption (CP-ABE), an encryptor can specify the access structure of decryptors, and as in attribute-based signature (ABS), each decryptor can verify the encryptor’s attributes. On the contrary to the access structure of decryptors, the access structure of the encryptor needs to be fixed in the setup phase. In this paper, we investigate ABSC with dynamic property, called dynamic ABSC (DABSC), where access structures of encryptor can be updated flexibly without re-issuing secret keys of users.

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Keita Emura
    • 1
  • Atsuko Miyaji
    • 2
  • Mohammad Shahriar Rahman
    • 2
  1. 1.Center for Highly Dependable Embedded Systems TechnologyJapan
  2. 2.School of Information ScienceJapan Advanced Institute of Science and TechnologyNomiJapan

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