Encrypted communication method, server and encrypted communication system

Abstract

The invention discloses an encrypted communication method, a server and an encrypted communication system. The encrypted communication method comprises the following steps: S1, receiving first encrypted information sent by a first communication terminal; S2, after the first encrypted information is received successfully, generating feedback information, and a second communication terminal encrypting the feedback information through a first encryption key to form first encrypted feedback information. According to the scheme, the second communication terminal can receive the first encrypted information; and sending feedback information to the first communication terminal, the encrypted information is encrypted; after the first communication terminal receives and decrypts the feedback information, an instruction is sent to the second communication terminal; at the moment, the second communication terminal can decrypt the first encrypted information; and after decryption, the first encrypted information is re-encrypted through the second encryption key to generate second encrypted information, and finally the second communication terminal can send the second encrypted information to the third communication terminal, so that the whole process is rigorous in logic, the operation risk can be reduced, and the potential safety hazard can be eliminated.

Description

Technical field [0001] The present invention relates to the field of data encryption technology, in particular to an encrypted communication method, a server and an encrypted communication system. Background technique [0002] Data encryption technology is the most basic security technology in the network. It mainly protects the security of the information transmitted in the network by encrypting the data. This is an active security defense strategy that can provide equivalent information with a small price. Great security protection. [0003] Encryption is a technology that restricts access to data transmitted on the network. The original data is also called plaintext. The encoded data generated by the encryption device (hardware or software) and the key is called ciphertext. The process of restoring the text to the original plaintext is called decryption, which is the reverse process of encryption, but the decryptor must use the same type of encryption equipment and key to decry...

AI Technical Summary

Problems solved by technology

[0005] The above prior art has the following disadvantages and deficiencies: after the first communication terminal sends the encrypted information to the second communication terminal, the second communication terminal can directly decrypt the encrypted information. Interactive authentication of identities between communication terminals. At the same time, the encryption key generation method lacks rigor, and there is a large security risk, so it needs to be improved

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