So, you found out after the fact that the
global adversary injected themselves in
the middle of your conversation with a
source. What do you do now?
If you could reliably detect a CA issuing MITM certs to the global adversary, and if some unstoppable mechanism would respond to such detections by promptly dropping the CA's cert from clients' trust roots, and if being dropped from the trust roots put the CA out of business, then it would be extremely difficult to induce a CA to issue MITM certs.What is CT in this context?
I believe it's Certificate Transparency, a Google project for globally monitoring SSL certificates.
Also the things that break transparently-keyed systems do so repeatedly. That's what transparent keying means: it's mediated by machines, and factored the slow, clumsy, human interactions out. CT? Audit logs? It's like Lucy and Charlie Brown with the football, except Lucy is hooked up to a for() loop.