Key distribution method and system of quantum key card

Abstract

According to the secret key distribution method and system of the quantum secret key card, the secret keys in the quantum secret key card are divided into the authentication secret key and the communication encryption secret key, the quantum secret key card is subjected to one-time pad device network access authentication before the communication encryption secret key is updated, and the unconditional safety of quantum secret key card network access authentication can be guaranteed. A generation key of a shared key is set for each encryption key distribution, and the generation key is generated by an authentication key of network access authentication of the key distribution and an identity authentication code of a user, so that on one hand, the authentication key is fully utilized, on the other hand, the shared key is generated in real time during encryption communication, and correct identity information needs to be input; and the correctness of the identity of the user using the key card is ensured.

Description

technical field [0001] The present disclosure belongs to the technical field of encrypted communication, and relates to a key distribution method and system of a quantum key fob. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] A quantum cryptographic network is a secure communication network using quantum cryptography. The quantum cryptographic network is constructed by a classical communication network and a quantum key distribution network. The quantum key distribution network is mainly composed of quantum key distribution terminal equipment (QKD equipment) and quantum links for the distribution of quantum keys. Classical communication networks use quantum keys to encrypt and decrypt data and transmit encrypted data. Terminals or servers in a quantum cryptographic network can communicate with quantum security through the shared quant...

AI Technical Summary

Problems solved by technology

[0007] At the same time, the quantum key card obtains the shared key through the key distribution of the quantum network service station and stores it in the key card. As the storage time increases, the freshness of the stored shared key decreases.

When the shared key is used for encrypted communication, corresponding measures are not taken to eliminate or reduce the potential safety hazards caused by the decline in the freshness of the shared key; and the quantum key card does not perform strict key distribution before the key seed is updated. device identity authentication, which further reduces the system security of the entire quantum cryptography network

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