Shulou(Shulou.com)06/01 Report--

The editor will share with you the introduction of https handshake. I hope you will gain a lot after reading this article. Let's discuss the methods together.

There is no doubt about the security of the https protocol. For the https certificate to be used normally, you still need to go through the https handshake. What does the https handshake mean? let's take a look at the https handshake introduction.

Generally speaking, https uses symmetric encryption and asymmetric encryption. And the encryption method of https handshake is also unique, it needs to configure the key after encryption symmetry, so that symmetrical encryption can be used in the process of data transmission. However, it should be noted that this encryption method is generally time-consuming, so asymmetric encryption is only used during the handshake to ensure the security of the symmetrically encrypted key, and it is faster to encrypt the data through symmetrical encryption during data transmission. The specific process is that client and server interact twice during the handshake. Three random numbers are generated, and these three random numbers form a symmetrically encrypted key, which is the case of https's handshake.

The above is an introduction to the https handshake, so what is the use of the https certificate handshake? First of all, in the handheld process, this part transmits the random value encrypted with the certificate, the purpose is to let the server get this random value, and then the communication between the client and the server can be encrypted and decrypted through this random value. However, this can generally be done through the server. First of all, it will verify whether the public key is valid, such as the issuing authority, expiration time, and so on. If an exception is found, an alarm box will pop up indicating that there is a problem with the certificate, so if there is no problem, then a random value is generated and the random value is encrypted with the certificate. Finally, after passing the decryption, you need to configure the random value (private key) passed by the relevant client, and then encrypt the content symmetrically through that value.

After reading this article, I believe you have a certain understanding of the introduction of https handshake, want to know more about it, welcome to follow the industry information channel, thank you for reading!

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