Abstract
Although threshold key-recovery systems for the discrete log based cryptosystems such as the ElGamal scheme have been proposed by Feldman and Pedersen [6, 11, 12], no (practical) threshold key-recovery system for the factoring based cryptosystems such as the RSA scheme has been proposed.
This paper proposes the first (practical) threshold key-recovery systems for the factoring based cryptosystems including the RSA and Rabin schemes. Almost all of the proposed systems are unconditionally secure, since the systems utilize unconditionally secure bit-commitment protocols and unconditionally secure VSS.
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Okamoto, T. (1998). Threshold key-recovery systems for RSA. In: Christianson, B., Crispo, B., Lomas, M., Roe, M. (eds) Security Protocols. Security Protocols 1997. Lecture Notes in Computer Science, vol 1361. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0028169
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DOI: https://doi.org/10.1007/BFb0028169
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