Mac npm install时提示git@github.com:Permission denied (publickey)

npm安装truffle-contract时报如下错误

% npm install truffle-contract --save                                  

npm ERR! code 128
npm ERR! An unknown git error occurred
npm ERR! command git --no-replace-objects ls-remote ssh://git@github.com/web3-js/WebSocket-Node.git
npm ERR! git@github.com: Permission denied (publickey).
npm ERR! fatal: Could not read from remote repository.
npm ERR! 
npm ERR! Please make sure you have the correct access rights
npm ERR! and the repository exists.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/domino/.npm/_logs/2023-01-25T09_49_32_140Z-debug-0.log

原因是没有配置 github的ssh key，没有权限通过ssh下载github上的项目。

解决方法：

• 生成ssh key

  .ssh % ssh-keygen -t rsa -b 4096 -C "你的邮箱@163.com"
  Generating public/private rsa key pair.
  # 这里要输入rsa文件的位置，注意不要覆盖掉默认的，避免影响到已有的ssh连接
  Enter file in which to save the key (/Users/domino/.ssh/id_rsa): /Users/domino/.ssh/id_rsa_github
  # 直接回车到底
  Enter passphrase (empty for no passphrase):
  Enter same passphrase again:
  Your identification has been saved in /Users/domino/.ssh/id_rsa_github.
  Your public key has been saved in /Users/domino/.ssh/id_rsa_github.pub.
  The key fingerprint is:
  SHA256:0qmF2i4vW05EYxIZJv1TI5wv1zRldtmh1GDLp5g9mM0 xxxx@163.com
  The key's randomart image is:
  ………………
  

• 配置到 ~/.ssh/config文件中

  # 在 ~/.ssh/config文件中添加以下代码，如果没有则需要先创建
  
  #github
  Host *.github.com
  HostName github.com
  PreferredAuthentications publickey
  IdentityFile ~/.ssh/id_rsa_github
  

配置好重新执行安装命令，安装成功

% npm install truffle-contract --save
npm WARN deprecated uuid@2.0.1: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
npm WARN deprecated uuid@2.0.1: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
npm WARN deprecated uuid@2.0.1: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
npm WARN deprecated uuid@3.3.2: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
npm WARN deprecated truffle-interface-adapter@0.2.5: WARNING: This package has been renamed to @truffle/interface-adapter.
npm WARN deprecated uuid@3.3.2: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
npm WARN deprecated truffle-contract@4.0.31: WARNING: This package has been renamed to @truffle/contract.

added 196 packages in 42s

参考文档：
https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent
https://blog.csdn.net/huangsy421/article/details/121489441文章来源地址https://uudwc.com/A/PjRo