Document

Split Generation of RSA Parameters with Multiple Participants

Version: 1
Created Date: 15 Jun 2016
Last Updated: 16 Jun 2016
In this paper Clifford Cocks shows how it is possible for any number of parties to co-operate in generating the parameters for an RSA encryption system in such a way that all must co-operate in order to decrypt enciphered data.

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rsa2.pdf

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Document overview

This paper was originally published within GCHQ by Clifford Cocks. Date unknown.

His paper extends previous work which solved this problem for two users. In addition he shows how the new protocol can be used to allow arbitrarily large encryption exponents.