In the framework of Impagliazzo's five worlds, a distinction is often made between two
worlds, one where public-key encryption exists (Cryptomania), and one in which only one …

In this work, we propose a bit-oriented QIA protocol based on special properties of quantum
rotation and the public key cryptographic framework. The proposed protocol exhibited good …

Quantum identity authentication (QIA) ensures that entities of quantum communication will
not be impersonated by attackers. As an auxiliary protocol, an ideal QIA protocol cannot take …

The quest for practical cryptographic primitives that are robust against quantum computers is
of vital importance for the field of cryptography. Among the abundance of different …

Secure communication in the modern day is made possible by cryptography. With advances
in the field of quantum mechanics, classical cryptosystems have become vulnerable to …

It is an important question to find constructions of quantum cryptographic protocols which
rely on weaker computational assumptions than classical protocols. Recently, it has been …

Exploring the symmetries underlying a previously proposed encryption scheme that relies
on single-qubit rotations, we derive an improved upper bound on the maximum information …

Based on quantum asymmetric cryptosystem, a public-key quantum signature for classical
messages is proposed. In our scheme, the private key is randomly chosen by signer, and the …

We introduce a computational problem of distinguishing between two specific quantum
states as a new cryptographic problem to design a quantum cryptographic scheme that is …

We present a quantum signature scheme using a single qubit rotation operator. In this
protocol, the trusted center confirms the quantum signature and thus conforms with other …