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by pfg 3691 days ago
You don't need to buy certificates. There are at least four CAs offering free certificates, with at least two (Let's Encrypt and StartSSL) offering API-based issuance. Getting a publicly-trusted certificate from Let's Encrypt is roughly the same amount of work as finding out how to get the OpenSSL CLI to issue a self-signed certificate, or using CloudFlare's tool to get one from their CA.