Mail system based on quantum digital signature and transceiving method

Abstract

The invention discloses a mail system based on a quantum digital signature and a transceiving method. The system adopts a three-layer structure, namely a physical layer, a key layer and an applicationlayer. The physical layer is a key generation terminal and is responsible for generating a key string for signature in real time. The secret key layer is used for storing a secret key string generated by the physical layer and providing a needed secret key for the upper application layer when needed. The application layer is a software part for receiving and sending of the mail system, and encrypting the information required to be sent by extracting a key generated by the physical layer from the key layer. The mail receiving and sending method comprises a quantum key distribution stage, a mail signature stage and a signature verification stage. Compared with the algorithm signature, the safety of the mail encrypted by the quantum digital signature is more powerfully guaranteed.

Description

technical field [0001] The invention belongs to the fields of finance, network information security, etc., and in particular relates to a quantum digital signature-based mail system and sending and receiving method. Background technique [0002] For the existing digital signature application scenarios, in order to ensure the authenticity of the sent information, the message is often signed by a specific signature algorithm (such as the Hash algorithm) before the information is sent. The calculated signature information is attached to the message and sent to the server together, and then the receiving end performs the same calculation on the content of the message, and compares the calculated result with the signature information carried behind the sending end. If the two are the same, it means that the content of the message has not been tampered with, otherwise it means that the message may have been tampered with. The message security of this form of digital signature dep...

AI Technical Summary

Problems solved by technology

[0003] Since the security of existing emails mostly depends on the complexity of the signature algorithm, in order to solve the problem that the security of the message depends on the complexity of the algorithm, the present invention proposes a quantum digital signature-based email system and sending and receiving method, which The security of an email encrypted by a quantum digital signature no longer depends on the complexity of the algorithm, and its security is guaranteed by the basic principles of quantum mechanics

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