How can I make pip use https to get to packages?

Question

I am using Python behind a firewall, where certain resources and URLs are blocked, but I can access them with https.

When I try install a package with pip, it complains about a bad MD5 hash, because what it is actually retrieving is the proxy server's denial page.

How can I get pip to use https?

Answer 1

OK, it turns out I am using pip 1.1. As limelights points out in his comment, https is enabled by default since 1.3.