International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Christine M. O'Keefe

Publications

Year
Venue
Title
2004
EPRINT
Optimal Updating of Ideal Threshold Schemes
We consider the problem of changing the parameters of an established ideal $(k,n)$-threshold scheme without the use of secure channels. We identify the parameters $(k',n')$ to which such a scheme can be updated by means of a broadcast message and then prove a lower bound on the size of the relevant broadcast. The tightness of this bound is demonstrated by describing an optimal procedure for updating the parameters of an ideal scheme.
1997
JOFC
1996
JOFC
1995
EUROCRYPT
1994
ASIACRYPT
1993
CRYPTO
1992
AUSCRYPT