How to create self-signed certificate with OpenSSL on Windows

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# How to create a self-signed certificate with OpenSSL on Windows

* Download the OpenSSL libarary from https://slproweb.com/products/Win32OpenSSL.html
* Install it on your Windows Machine
* Add the OpenSSL folder to your system PATH by doing the following:
    * Press and Hold `Windows key` and `R` to open the Run dialog box
    * Type `sysdm.cpl` and press the Enter key
    * Navigate to the `Advanced Tab` and click `Environmental Variables` 
    * Under `System variables`, select `Path` and click on `Edit`
    * Click on `Browse` and locate the `bin` folder within the installation folder of OpenSSL, then add it
    * Restart all Command Prompts (or Shell)
* Create a folder inside the `bin` folder of OpenSSL, prefreably, name it `SSL`
    * Within this folder create two **empty** files, namely, `influxdb-selfsigned.crt` and `influxdb-selfsigned.key`
* Open a Command Prompt and execute the command: `openssl req -x509 -nodes -newkey rsa:2048 -keyout "C:\Program Files\OpenSSL-Win64\bin\SSL\influxdb-selfsigned.key" -out "C:\Program Files\OpenSSL-Win64\bin\SSL\influxdb-selfsigned.crt" -days 780`
    * This command assumes that you installed the `64bit` version of OpenSSL within your `Program Files` directory
    * Answer the questions to create your self-signed certificate and self-signed key