对于任何需要更详细说明的人，请参阅本页: https://docs.github.com/authentication/connecting-to-github-with-ssh/working-with-ssh-key-passphrases

如果您为密钥文件设置了密码，则在连接时始终需要输入该密码。如果你创建了一个无密码密钥，那么你就不必每次都输入它，但是，任何访问你的密钥文件的人现在都可以连接到你的github帐户。

Ssh-agent也可以工作。试着运行它，看看它是否会记住你的密码。

对于任何需要更详细说明的人，请参阅本页: https://docs.github.com/authentication/connecting-to-github-with-ssh/working-with-ssh-key-passphrases

[编辑-误读问题，这是一个相关问题的答案。为后人留下改写的版本]

我的案例是，我试图推动一个托管在我们的服务器上的回购。每当我尝试做一个推，git会问我我的密码(nb -密码，不是我的私钥的密码短语)。

通过将我的公钥添加到服务器上的授权密钥，我能够获得无密码推送到该服务器。而且，因为我的私钥上没有密码(顺便说一句，这是糟糕的做法!)我根本不需要输入任何东西。

下面是向服务器添加公钥的命令。它假设用户git是服务器上的用户。

cat .ssh/id_rsa.pub | ssh git@GIT_MASTER_IP 'cat >> .ssh/authorized_keys'

您可以通过登录到服务器，并手动将公钥附加到~/.ssh/authorized_keys文件中来实现相同的功能

我意识到这个问题在两年前就出现了，但我也有同样的问题，这里的几个答案并没有完全回答我的问题。以下是三个分步解决方案，具体取决于您是否使用TortoiseGit和msysgit。

第一种方案以Windows、msysgit、PuTTY为例。

Install msysgit and PuTTY as instructed. (Optional) Add PuTTY to your path. (If you do not do this, then any references to PuTTY commands below must be prefixed with the full path to the appropriate executable.) If you have not done so already, then generate a key hash as instructed at GitHub or as instructed by your Git host. Again, if you have not already done so, convert your key for use with PuTTY's pageant.exe using puttygen.exe. Instructions are in PuTTY's documentation, in this helpful guide, and several other places in cyberspace. Run PuTTY's pageant.exe, open your .ppk file ("Add Key"), and provide your passphrase for your key. Access Windows' environment variables dialog (Right-click on "Computer", Click on "Properties", Click on "Advanced system settings" or the "Advanced" tab, click on "Environment Variables"). Add the following environment variable: GIT_SSH=C:\full\path\to\plink.exe Replace "C:\full\path\to" with the full installation path to PuTTY, where plink.exe is found. It is probably best to add it to the "User variables" section. Also, make sure that the path you use to plink.exe matches the path you use for Pageant (pageant.exe). In some cases, you may have several installations of PuTTY because it might be installed along with other applications. Using plink.exe from one installation and pageant.exe from another will likely cause you trouble. Open a command prompt. If you are trying to connect to a git repository hosted at Github.com then run the following command: plink.exe git@github.com If the git repository you are trying to connect to is hosted somewhere else, then replace git@github.com with an appropriate user name and URL. (Assuming Github) You should be informed that the server's host key is not cached, and asked if you trust it. Answer with a y. This will add the server's host key to PuTTY's list of known hosts. Without this step, git commands will not work properly. After hitting enter, Github informs you that Github does not provide shell access. That's fine...we don't need it. (If you are connecting to some other host, and it gives you shell access, it is probably best to terminate the link without doing anything else.) All done! Git commands should now work from the command line. You may want to have pageant.exe load your .ppk file automatically at boot time, depending on how often you'll be needing it.

第二种方案假设Windows、msysgit和TortoiseGit。

TortoiseGit附带了PuTTY可执行文件和一个经过特别修改的plink版本(称为TortoisePlink.exe)，这将使事情变得更简单。

Install msysgit and TortoiseGit as instructed. If you have not done so already, then generate a key hash as instructed at GitHub or as instructed by your Git host. Again, if you have not already done so, convert your key for use with TortoiseGit's pageant.exe using TortoiseGit's puttygen.exe. Instructions are in PuTTY's documentation, in the helpful guide linked to in the first solution, and in several other places in cyberspace. Run TortoiseGit's pageant.exe, open your .ppk file ("Add Key") and provide your passphrase for your key. Access Windows' environment variables dialog (Right-click on "Computer", Click on "Properties", Click on "Advanced system settings" or the "Advanced" tab, click on "Environment Variables"). Add the following environment variable: GIT_SSH=C:\full\path\to\TortoisePlink.exe Replace "C:\full\path\to" with the full installation path to TortoiseGit, where TortoisePlink.exe is found. It is probably best to add it to the "User variables" section. Also, make sure that the path you use to TortoisePlink.exe matches the path you use for Pageant (pageant.exe). In some cases, you may have several installations of PuTTY because it might be installed along with other applications. Using TortoisePlink.exe from the TortoiseGit installation and pageant.exe from another installation of a different application (or from a standalone PuTTY installation) will likely cause you trouble. All done! Git commands should now work from the command line. The first time you try to connect to your git repository you will probably be informed that the server's host key is not cached, and asks if you trust the server. Click on "Yes". (This is TortoisePlink.exe in action.) You may want to have pageant.exe load your .ppk file automatically at boot time, depending on how often you'll be needing it.

第三种方案假设Windows、msysgit和本机命令提示符。

安装msysgit 确保允许在MS-DOS命令提示符上使用git 运行start-ssh-agent 输入SSH密码 全部完成!Git命令现在应该在本机命令提示符中工作。

我意识到这个问题已经拖延了好几年，但我无意中发现了这个问题，试图找到一个解决方案，我发现了一些适合所有专业水平的东西，所以我想我应该分享一下。

GitHub提供了一个非常有用的安装程序，使一切都很好很简单:https://help.github.com/articles/caching-your-github-password-in-git/