I have a few applications relying on hash functions, which were developed a while ago before browsers changed their policy to restrict Crypto.subtle to HTTPS connections.
Deploying the webapps on secure connection isn't a problem for me, but testing them locally is.
How can I test for SubtleCrypto, and other features that require secure contexts to work? Is there an option in about:config that I can tweak?
Browsers now treat localhost and loopback IP addresses (127.0.0.0/8 and ::1/128) as secure, which is a big favor done to developers. See this.