Generating a new SSH key

1. Open Git Bash.

2. Paste the text below, substituting in your GitHub email address.

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

   This creates a new ssh key, using the provided email as a label.

   > Generating public/private rsa key pair.

3. When you‘re prompted to "Enter a file in which to save the key," press Enter. This accepts the default file location.

   > Enter a file in which to save the key (/c/Users/you/.ssh/id_rsa):[Press enter]

4. At the prompt, type a secure passphrase. For more information, see "Working with SSH key passphrases".

   > Enter passphrase (empty for no passphrase): [Type a passphrase]
   > Enter same passphrase again: [Type passphrase again]

Generating a new SSH key

原文：https://www.cnblogs.com/ericling/p/11524413.html