Post-quantum security for SSH access on GitHub

Today, we’re announcing some changes that will improve the security of accessing Git data over SSH. We’re adding a new post-quantum secure SSH key exchange algorithm, known alternately as sntrup761x25519-sha512 and sntrup761x25519-sha512@openssh.com , to our SSH endpoints for accessing Git data. This only affects SSH access and doesn’t impact HTTPS access at all.