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A Candidate Access Structure for Super-polynomial Lower Bound on Information Ratio
secret sharing general access structures information ratio
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2019/6/3
The contribution vector (convec) of a secret sharing scheme is the vector of all share sizes divided by the secret size. A measure on the convec (e.g., its maximum or average) is considered as a crite...
On the Information Ratio of Non-Perfect Secret Sharing Schemes
Secret sharing Non-perfect secret sharing Information Ratio Polymatroid
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2016/1/25
A secret sharing scheme is non-perfect if some subsets of players that cannot recover the
secret value have partial information about it. The information ratio of a secret sharing
scheme is the rati...
Lower Bounds on the Information Ratio of Linear Secret Sharing Schemes
cryptographic protocols secet sharing linear secret sharing schemes
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2013/2/21
Superpolynomial lower bounds on the average information ratio of linear secret sharing scheme are presented in this note for the first time. The previously known superpolynomial lower bounds applied o...