Efficient multiplicative sharing schemes.
In: Maurer, U, (ed.)
ADVANCES IN CRYPTOLOGY - EUROCRYPT '96.
(pp. 107 - 118).
Multiplicative threshold schemes are useful tools in threshold cryptography. For example, such schemes can be used with a wide variety of practical homomorphic cryptosystems (such as the RSA, the El Gamal and elliptic curve systems) for threshold decryption, signatures, or proofs. The paper describes a new recursive construction for multiplicative threshold schemes which makes it possible to extend the number of users of such schemes for a relatively small expansion of the share size. We discuss certain properties of the schemes, such as the information rate and zero knowledge aspects.The paper extends the Karnin-Greene-Hellman bound on the parameters of ideal secret sharing schemes to schemes which are not necessarily ideal and then uses this as a yardstick to compare the performance of currently known multiplicative sharing schemes.
|Title:||Efficient multiplicative sharing schemes|
|Event:||International Conference on the Theory and Application of Cryptographic Techniques (EUROCRYPT 96)|
|Dates:||1996-05-12 - 1996-05-16|
|UCL classification:||UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Engineering Science
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