Two-way Quantum Key Distribution Method Based on Two Different Particle States
A quantum key distribution and particle technology, applied in the field of quantum communication, can solve problems such as relying on trusted third parties, and achieve the effects of increasing attack difficulty, improving efficiency, and protecting security
Active Publication Date: 2020-06-23
CHENGDU UNIV OF INFORMATION TECH
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There is an unequal relationship in the first distribution mode, while the second distribution mode relies too much on trusted third parties. Under the premise of the rapid development of the Internet, it is necessary for two or more parties to establish communication in a multi-node communication network. higher conditions
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[0026] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the implementations shown and described in the drawings are only exemplary, intended to explain the principle and spirit of the present invention, rather than limit the scope of the present invention.
[0027] The embodiment of the present invention provides a two-way quantum key distribution method based on two different particle states, such as figure 1 As shown, including the following steps S1~S9:
[0028] S1. Alice, the first protocol party, randomly generates a binary string , and according to the binary string characters in Prepare the corresponding single-photon state particles; where , is the length of the final key.
[0029] In the embodiment of the present invention, if , then Alice, the first protocol party, prepares single-photon particles ;like , then Alice, the first protocol party, prepa...
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The invention discloses a two-way quantum key distribution method based on two different particle states. The two parties of the agreement, Alice and Bob, are both the sender and the receiver of the key. It is a two-way communication protocol. Each participant gives Half of the classic sequence is used to generate the final key. In a multi-node communication network, the establishment of communication between two organizations (institutions) is based on equality and security. The secret key is jointly determined by both parties. And has better efficiency. At the same time, Alice and Bob, the participants of the protocol in the present invention, prepare quantum states on different bases, which will increase the attack difficulty for external attackers in the key transmission process, and can well protect the security of key distribution. In addition, the invention changes the traditional key distribution mode, cancels a trusted third party with powerful quantum functions, and can effectively control equipment costs in a multi-node application environment.
Description
technical field [0001] The invention belongs to the technical field of quantum communication, and in particular relates to the design of a two-way quantum key distribution method based on two different particle states. Background technique [0002] Most of the existing quantum key distribution protocols (QKD) are mainly composed of a key distributor and a key receiver. To establish a secure communication between the two parties, both parties need to obtain a key that only they know. Existing QKD has two modes: the distribution mode in which one of the participants distributes to the other party and the distribution mode that relies on a trusted third party. There is an unequal relationship in the first distribution mode, while the second distribution mode relies too much on trusted third parties. Under the premise of the rapid development of the Internet, it is necessary for two or more parties to establish communication in a multi-node communication network. conditions are...
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IPC IPC(8): H04L9/08
CPCH04L9/0819H04L9/0852
Inventor 胥仕洹秦智
Owner CHENGDU UNIV OF INFORMATION TECH