Communication security has to evolve to a higher plane in the face of the threat from the
massive computing power of the emerging quantum computers. Quantum secure direct …

In this review article, we review the recent development of quantum secure direct
communication (QSDC) and deterministic secure quantum communication (DSQC) which …

Untrusted node networks initially implemented by measurement-device-independent
quantum key distribution (MDI-QKD) protocol are a crucial step on the roadmap of the …

Quantum secure direct communication is the direct communication of secret messages
without need for establishing a shared secret key first. In the existing schemes, quantum …

In this paper, a quantum secure direct communication protocol with χ-type entangled
states∣ χ 00⟩ 3214 is proposed. We analyze the security of this protocol and prove that it is …

The security of classical cryptography based on computational complexity assumptions has
been severely challenged with the rapid development of quantum computers and quantum …

We analyze the security of multiparty controlled quantum secure direct communication using
Greenberger–Horne–Zeilinger (GHZ) state. It is shown that the receiver, using a special …

From the perspective of information theory and cryptography, the security of two quantum
dialogue protocols and a bidirectional quantum secure direct communication (QSDC) …

A two-step quantum secure direct dialogue protocol using Einstein-Podolsky-Rosen (EPR)
pair block is proposed. In the protocol, the dialogue messages are encoded on series of …

This paper presents a scheme for quantum secure direct communication with quantum
encryption. The two authorized users use repeatedly a sequence of the pure entangled pairs …