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On values of vectorial Boolean functions and related problems in APN functions
Vectorial Boolean function APN function differentially δ-uniform function
2016/1/26
In this paper we prove that there are only differential 4-uniform functions which are on distance 1 from an APN function. Also we prove that there are no APN functions of distance 1 from another APN f...
SETUP in Secret Sharing Schemes using Random Values
Secret Sharing SETUP Black-Box Cryptography
2016/1/25
Secret sharing schemes divide a secret among multiple participants
so that only authorized subsets of parties can reconstruct it. We
show that SETUP (Secretly Embedded Trapdoor with Universal Protec...
In this paper we present for the first time a framework that allows secure two-party computations on approximations of real valued signals. In our solution, we use a quantized logarithmic representati...
Efficient Conversion of Secret-shared Values Between Different Fields
Efficient Conversion Secret-shared Values Different Fields
2009/6/4
We show how to effectively convert a secret-shared bit b over
a prime field to another field. If initially given a random replicated secret
share this conversion can be done by the cost of revealing...
Proofs of Knowledge with Several Challenge Values
zero-knowledge cryptographic protocols double discrete logarithm
2009/6/4
In this paper we consider the problem of increasing the number
of possible challenge values from 2 to s in various zero-knowledge cut
and choose protocols. First we discuss doing this for graph isom...
Designs of Efficient Secure Large Hash Values
Efficient Secure Large Hash Values double length hash function
2009/4/1
A double length hash function is a 2n-bit hash function based on an n-bit compression func-
tion. To increase the security level, designs of good double length hash functions are important.In this pa...