How to set key in git

Git is a popular version control tool that helps programmers better manage code changes. In Git, key setting can help you push and pull code easily. This article will introduce you how to set Git key.

What is Git Key?

Git Key is a method used for authorization in Git. It allows you to access GitHub or other Git repositories without entering a username and password. If you often pull or push code from a Git repository, setting up a Git Key will make your work easier and more efficient.

How Git Key works

Git Key is a public and private key authentication method. When using Git, we need to generate a pair of public and private keys first. The public key can be made public and used for external authorization, while the private key needs to be kept safe and visible only to you.

When you initiate a push or pull request to a Git repository, Git will send a random number challenge to your computer. Your computer uses the private key to sign the challenge and then sends it back to the Git repository. The Git repository then uses your public key to verify the legitimacy of the signature. If the verification passes, it proves that your private key is valid and can pass the authentication.

Generate a new Git Key

Now let’s start with how to generate a new Git Key. The following are the detailed steps:

Step 1: Open Git Bash

Under Windows system, press Win R, enter cmd to enter the DOS command window. Enter git in the command window. If the system prompts no git, it means git is not installed. The steps to install git will not be described here.

When running Git Bash, you need to enter the following command to generate the public and private keys:

ssh-keygen -t rsa -b 4096 -C "youremail@example.com"

Where "youremail@example.com" is your email address, you can set it freely during the generation process.

Step 2: Select the save location

Next, you will be asked to select the location where the ssh key is saved. Here you can just press Enter and use the default location.

If you want to specify the save location yourself, you can manually enter the save path in this step.

Step 3: Create a password

After creating the public and private keys, you need to create a password, or you can skip it without setting a password.

If you choose to create a password, you will need to enter it repeatedly to confirm. Passwords can make your Git Key more secure and prevent someone from using your private key to operate the code repository without permission.

Step 4: Add the public key to the Git repository

After you generate the public and private keys, you need to add the public key to Github or other Git repository.

The operation of adding a public key is different every time, please check the warehouse for details. For example, the following is how to add a public key in Github:

Open Github, click Settings -> SSH and GPG Keys -> New SSH Key.

Just add the copied public key. At this point, you can perform Git operations without entering your account and password.

Summary

This article introduces how to set Key in Git and why Key is so important. Whether in a personal project or a collaborative team, Key can effectively protect your code security and perform Git operations conveniently and quickly.

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