Quantum Secure Direct Communication Scheme Research Articles

Three-party quantum secure direct communication based on GHZ states

We present a three-party simultaneous quantum secure direct communication (QSDC) scheme by using Greenberger–Horne–Zeilinger (GHZ) states. This scheme can be directly generalized to N-party QSDC by using n-particle GHZ states. We show that the many-party simultaneous QSDC scheme is secure not only against the intercept-and-resend attack but also against the disturbance attack.

Quantum Secure Direct Communication Using Quantum Calderbank-Shor-Steane Error Correcting Codes

The notion of quantum secure direct communication (QSDC) has been introduced recently in quantum cryptography as a replacement for quantum key distribution, in which two communication entities exchange secure classical messages without establishing any shared keys previously. In this paper, a quantum secure direct communication scheme using quantum Calderbank-Shor-Steane (CSS) error correction codes is proposed. In the scheme, a secure message is first transformed into a binary error vector and then encrypted (decrypted) via quantum coding (decoding) procedures. An adversary Eve, who has controlled the communication channel, can't recover the secrete messages because she doesn't know the deciphering keys. Security of this scheme is based on the assumption