A Symmetric Key Distribution Method for Resisting Quantum Attacks

Abstract

A symmetric key distribution method for anti-quantum attack, comprising: a, the key service terminal and the key management server share at least one root key; b, the key management server constructs a key distribution message and sends it to the key The service terminal; c. The key service terminal receives the key distribution message; d. The key service terminal generates a root key update message, and the key service terminal updates a new root key and sends it to the key management server; e. The key management server sends a root key update message, and then generates a root key update confirmation message; f. The key service terminal receives the encrypted root key update confirmation message, and the key distribution process is completed. Compared with the prior art, the present invention realizes the safe distribution of the symmetric key between the key management server and the key service terminal by optimizing the symmetric key distribution mechanism between the key management server and the key service terminal, which can achieve The security performance of anti-quantum attack, so as to realize the secure transmission of symmetric key.

Description

technical field [0001] The invention relates to the technical field of information transmission, in particular to a symmetric key distribution method for resisting quantum attacks. Background technique [0002] In terms of resisting quantum computer attacks, symmetric cryptographic mechanisms have natural advantages, because usually, the keys used in symmetric cryptographic mechanisms are randomly generated rather than generated by a specific algorithm. But it is precisely because of the randomness of symmetric keys that the distribution of symmetric keys must use other methods to ensure security. In fact, in the widely used secure communication based on asymmetric encryption mechanism, the asymmetric encryption mechanism is usually used to negotiate a symmetric key between two communicating parties, and the symmetric key is ultimately used to encrypt data for transmission. Since the security of symmetric key agreement is guaranteed using asymmetric cryptographic algorithms...

AI Technical Summary

Problems solved by technology

The former can physically realize the security of symmetric key distribution, but requires special equipment and fiber channels, and the price is very expensive; the security of the latter depends on the transmission path of the medium containing the symmetric key, and the convenience is insufficient and artificial Mistakes are inevitable

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