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Unconditionally Secure Homomorphic Pre-distributed Commitments

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Abstract

In this paper we deal with unconditionally secure commitment schemes based on pre-distributed data. We provide bounds for the amount of data which has to be pre-distributed to the participants of the commitment, thus solving an open problem stated in the literature. We also introduce the issue of homomorphism in unconditionally secure commitment schemes. We provide a definition and a construction based on modules of mappings over finite rings. As an application of our constructions, we provide a new pre-distributed primitive which yields non-interactive unconditionally secure zero knowledge proofs of any polynomial relation among commitments.

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© 2003 Springer-Verlag Berlin Heidelberg

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Nascimento, A.C.A., Otsuka, A., Imai, H., Mueller-Quade, J. (2003). Unconditionally Secure Homomorphic Pre-distributed Commitments. In: Fossorier, M., Høholdt, T., Poli, A. (eds) Applied Algebra, Algebraic Algorithms and Error-Correcting Codes. AAECC 2003. Lecture Notes in Computer Science, vol 2643. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44828-4_11

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  • DOI: https://doi.org/10.1007/3-540-44828-4_11

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-40111-7

  • Online ISBN: 978-3-540-44828-0

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