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A generalized architecture of quantum secure direct communication for N disjointed users with authentication
In this paper, we generalize a secured direct communication process between N users with partial and full cooperation of quantum server. So, N − 1 disjointed users u 1 , u 2 , …, u N −1 can transmit a secret message of classical bits to a remote user u N by utilizing the property of dense coding an...
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Published in: | Scientific reports 2015-11, Vol.5 (1), p.16080-16080, Article 16080 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | In this paper, we generalize a secured direct communication process between
N
users with partial and full cooperation of quantum server. So,
N
− 1 disjointed users
u
1
,
u
2
, …,
u
N
−1
can transmit a secret message of classical bits to a remote user
u
N
by utilizing the property of dense coding and Pauli unitary transformations. The authentication process between the quantum server and the users are validated by
EPR
entangled pair and
CNOT
gate. Afterwards, the remained
EPR
will generate shared
GHZ
states which are used for directly transmitting the secret message. The partial cooperation process indicates that
N
− 1 users can transmit a secret message directly to a remote user
u
N
through a quantum channel. Furthermore,
N
− 1 users and a remote user
u
N
can communicate without an established quantum channel among them by a full cooperation process. The security analysis of authentication and communication processes against many types of attacks proved that the attacker cannot gain any information during intercepting either authentication or communication processes. Hence, the security of transmitted message among
N
users is ensured as the attacker introduces an error probability irrespective of the sequence of measurement. |
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ISSN: | 2045-2322 2045-2322 |
DOI: | 10.1038/srep16080 |