Creating a Self-Signed Certificate in macOS

  It typically OpenSSL comes pre-installed on macOS

 

1. Open Terminal
   macOS includes OpenSSL, so you can run the commands directly from the terminal.
   
   
2.  Generate the Private Key
   openssl genrsa -out myprivatekey.key 2048
   
   
3. Create the Certificate Signing Request (CSR)
    openssl req -new -key myprivatekey.key -out myrequest.csr
   Fill in the requested information.
   
   
4. Generate the Self-Signed Certificate
   openssl x509 -req -days 365 -in myrequest.csr -signkey myprivatekey.key -out mycertificate.crt
   
   
5. Verify
   The certificate (mycertificate.crt) and private key (myprivatekey.key) are now available.