Data communication method and device

Abstract

The embodiment of the invention discloses a data communication method and device. When the method is used for a second communication end, the method comprises the steps: generating second information and carrying out the encryption of the second information through a public key of a first communication end after the verification of first ciphertext data transmitted by the first communication end is passes, so as to obtain second ciphertext data; transmitting the second ciphertext data to the first communication end, so as to enable the first communication end to carry out the decryption of the second ciphertext data through a private key of the first communication, and to obtain decrypted second information; receiving the decrypted second information transmitted by the first communication end; judging whether the decrypted second information transmitted by the first communication end is consistent with the second information generated by the second communication end or not: confirming that the first communication end is legal if the decrypted second information transmitted by the first communication end is consistent with the second information generated by the second communication end, thereby guaranteeing the safety of data communication.

Description

technical field [0001] The present invention relates to communication technology, in particular to a data communication method and device. Background technique [0002] Today people pay more and more attention to how to ensure the security of communication data. In the process of sending confidential or important data, both parties to the communication usually perform security authentication through some encryption and decryption method to verify the identity and ensure the legality and security of the communication data. For example, when the client sends important data to the server, it can first encrypt the data with the server's public key, and use the client's private key to make a signature, and then send it to the server together. After the server receives it, the encrypted data is encrypted with the server's private key. The important data is obtained by decryption, and the signature is verified by the client public key, thereby achieving a certain security authenti...

AI Technical Summary

Problems solved by technology

[0003] However, the inventor found in the process of implementing the present invention that there are still insecure factors in the prior art, for example, if an illegal client sends data sent by the intercepted legal client to the server, the server may still It will think that it is legitimate data sent by a legitimate client, so that the illegal client is mistakenly regarded as a legitimate client, which will bring hidden dangers and cannot ensure the real security of communication

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