International Association for Cryptologic Research

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Paper: Verifiable Encryption and Applications to Group Signatures and Signature Sharing

Authors:
Jan Camenisch
Ivan Damgård
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URL: http://eprint.iacr.org/1999/008
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Abstract: We generalize and improve the security and efficiency of the verifiable encryption scheme of Asokan et al., such that it can rely on more general assumptions, and can be proven secure without assuming random oracles. We show a new application of verifiable encryption to group signatures with separability, these schemes do not need special purpose keys but can work with a wide range of signature, identification, and encryption schemes already in use. Finally, we extend our basic primitive to verifiable threshold and group encryption. By encrypting digital signatures this way, one gets new solutions to the verifiable signature sharing problem.
BibTeX
@misc{eprint-1999-11330,
  title={Verifiable Encryption and Applications to Group Signatures and Signature Sharing},
  booktitle={IACR Eprint archive},
  keywords={public-key encryption, zero-knowledge protocols, verifiable signature sharing, group signatures},
  url={http://eprint.iacr.org/1999/008},
  note={Appeared in the THEORY OF CRYPTOGRAPHY LIBRARY and has been included in the ePrint Archive. camenisch@brics.dk 10500 received March 23, 1999},
  author={Jan Camenisch and Ivan Damgård},
  year=1999
}