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In Public-Key Encryption, traditionally no security is expected if honest parties use keys provided by an adversary. In this work, we re-examine this premise. While using untrusted keys may seem nonse...
Optimal Ramp Schemes and Related Combinatorial Objects
secret sharing combinatorial cryptography
2017/5/23
In 1996, Jackson and Martin proved that a strong ideal ramp scheme is equivalent to an orthogonal array. However, there was no good characterization of ideal ramp schemes that are not strong. Here we ...
On Zigzag Functions and Related Objects in New Metric
Cryptography Zigzag functions Quorum systems
2009/1/4
In this paper we will investigate the properties of zigzag functions. The zigzag functions, introduced
in [2] and used for efficient oblivious transfer in [14] were later generalized to s-zigzag
fun...