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Post-Quantum Zero-Knowledge Proofs for Accumulators with Applications to Ring Signatures from Symmetric-Key Primitives
privacy-preserving cryptography provable security accumulator
2017/11/29
In this paper we address the construction of privacy-friendly cryptographic primitives for the post-quantum era and in particular accumulators with zero-knowledge membership proofs and ring signatures...
Post-Quantum Zero-Knowledge and Signatures from Symmetric-Key Primitives
post-quantum cryptography zero-knowledge signatures
2017/3/31
In our signature constructions, the public key is an image y=f(x) of a one-way function f and secret key x. A signature is a non-interactive zero-knowledge proof of x, that incorporates a message to b...
Digital Signatures from Symmetric-Key Primitives
post-quantum cryptography signatures block cipher
2016/12/7
We propose practically efficient signature schemes which feature several attractive properties: (a) they only rely on the security of symmetric-key primitives (block ciphers, hash functions), and are ...
We discuss the design of symmetric primitives, in particular Pseudo-Random Functions
(PRFs) which are suitable for use in a secret-sharing based MPC system. We consider three different
PRFs: the Nao...
We provide a stronger definition of anonymity in the context of shared
symmetric key primitives, and show that existing schemes do not provide
this level of anonymity. A new scheme is presented to s...