Grannell, Mike J.; Griggs, Terry S. and Street, Anne Penfold
A flaw in the use of minimal defining sets for secret sharing schemes.
Designs, Codes and Cryptography, 40(2) pp. 225–236.
It is shown that in some cases it is possible to reconstruct a block design D uniquely from incomplete knowledge of a minimal defining set for D. This
surprising result has implications for the use of minimal defining sets in secret sharing schemes.
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