Mac OS 下製作自簽名SSL證書

打開終端（Terminal）程序，按如下步驟製作證書：

openssl genrsa -des3 -passout pass:x -out server.pass.key 2048

openssl rsa -passin pass:x -in server.pass.key -out server.key

rm server.pass.key

openssl req -new -key server.key -out server.csr

openssl x509 -req -days 365 -in server.csr -signkey server.key out server.crt

The server.crt file is your site certificate suitable for use with Heroku’s SSL add-on along with the server.key private key.

轉自: https://devcenter.heroku.com/articles/ssl-certificate-self