LettuceEncrypt: Free, automatic HTTPS certificate generation for ASP.NET Core web apps

Easy way to use Let’s Encrypt in Kestrel scenarios: LettuceEncrypt for ASP.NET Core


  • only work when kestrel receive encrypted traffic (either in edge mode or behind a TCP load balancer transmitting encrypted traffic),
  • This repos in in maintenance mode.


  • a Nate McMaster project even if he is no longer a MS employee,
  • Storage is largely customizable : Let’s Encrypt account private key, generated certificate,
  • have been choosen as documented way of adding Let’s Encrypt support in Yarp.

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