Shared Generation of Authenticators and Signatures (Extended Abstract)

@inproceedings{Desmedt1991SharedGO,
  title={Shared Generation of Authenticators and Signatures (Extended Abstract)},
  author={Yvo Desmedt and Yair Frankel},
  booktitle={CRYPTO},
  year={1991}
}
Often it is desired that the power to sign or authenticate messages is shared. This paper presents methods to collectively generate RSA signatures, provably secure authenticators and unconditionally secure authenticators. In the new schemes, 1 individuals are given shares such that k 5 1 are needed to generate a signature (authenticator) but less than k can not. When the k people have finished signing (authenticating), nobody can perform an impersonation or substitution attack. These schemes… CONTINUE READING
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