TL;DR
This study proposes a novel signcryption scheme based on the algebraic structure of the group ring and proves its provable security, and shows that the security of the scheme relies on the intractability of two hard problems, i.e., bilinear Diffie–Hellman inversion in group ring and bilinear strong Diffie–Hellman assumption in group ring.
This paper proposes a dynamic quantum secure multi-party multiplication protocol with verifiable result integrity, based on homomorphic encryption, that can resist a series of typical external and internal attacks.
A hybrid key exchange protocol combining DHKE with Learning With Errors (LWE), a lattice-based post-quantum primitive that provides authentication via a Public Key Infrastructure together with CRYSTALS-Dilithium digital signature, resilience against MITM attacks, and robustness against classical and quantum threats.
Quantum Key Distribution (QKD) protocols typically involve two separate steps of error-verification and privacy amplification. Both steps involve the application of a hash function sampled from a suitable hash family to classical data. A potentially simpler alternative is to implement a single-step hashing procedure, a...
Pseudorandom permutations are ubiquitous in theoretical and applied cryptography. PRPs that offer security even against adversaries making quantum queries are of increasing interest, and used in applications ranging from constructing pseudorandom unitaries to separating SZK from BQP. A successful framework for construc...
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