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In CRYPTO 2006 Chen and Cramer proposed secret sharing schemes (SSS) from algebraic–geometric (AG) codes. The schemes are ramp schemes with gap bounded by 2g, where g is the genus of the underlying curve. Subsequently, Chen, Ling and Xing explicitly gave a complete characterization of the access structures for one special and important instance-elliptic secret sharing schemes (the ones from algebraic–geometric...
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