Quantum secret key synchronization method for distribution terminal

Abstract

The invention discloses a quantum secret key synchronization method for a distribution terminal. Sharing quantum secret keys are separately stored in quantum secret key downloading interfaces A and Bthrough distributing a unique ID for each quantum secret key, the quantum secret keys are transmitted via a method that uses a third-party safe storage medium as a medium, the quantum secret keys needed by the distribution terminal are acquired from the quantum secret key downloading interfaces via the third-party safe storage medium, and then the third-party safe storage medium is connected withthe physical interfaces of the distribution terminal one by one for transmitting the quantum secret keys to the distribution terminal. The quantum secret key synchronization method for the distribution terminal provided by the invention is the method that distributes the secret key pools formed at each distribution terminal based on the quantum secret keys in an off-line manner and negotiates ID based on the quantum secret keys; aiming at the service security protection level requirement, the two quantum secret key synchronization methods are combined, and thus the channel utilization rate isimproved, and the transmission security of the quantum secret key ID during a negotiation synchronization process is ensured.

Description

technical field [0001] The invention relates to a quantum key synchronization method, in particular to a quantum key synchronization method for a power distribution terminal. Background technique [0002] Quantum secure communication is based on symmetric keys to realize encrypted communication. Through the quantum key distribution network, the two parties in the communication negotiate to generate a quantum key (symmetric key), which is then used to encrypt the data that needs to be transmitted. [0003] The quantum key distribution architecture mainly has the following two basic forms: one is: (1) Quantum key point-to-point distribution architecture: [0004] Such as figure 2 Shown is the most basic quantum secure communication architecture. The quantum key is a symmetric key, and the two communicating parties need to obtain the same shared key to realize the encryption and decryption of data. Therefore, for figure 2 , the quantum key using devices at both ends of the...

AI Technical Summary

Problems solved by technology

The disadvantages of this "off-network" distribution are: 1. The two parties need to negotiate the length of the quantum key used, which increases the complexity of the system and the amount of communication data; 2. The two parties need to determine the key they choose in the key pool. Whether the keys are the same, a safe key unification mechanism is required to ensure that the confidential communication between the two parties does not cause key bit loss or confusion due to storage, system control and other issues, and ensure that the confidential communication can go smoothly; 3. In power distribution automation, In the case of large-scale terminal coverage such as electricity information collection, off-network distribution is more inefficient than online distribution

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