I'm sorry your day is this boring, but please don't chaff up threads with stuff like this just to spice things up for yourself. It's an extremely straightforward question; if you don't have an answer, you don't need to comment.
Not really, proper encryption is usually opensource, peer audited for decades, and inspected by several global government agencies.
Math is funny this way, as it is an all or nothing algorithm... where it is either fully secure or broken beyond repair (sometimes intentionally).
A better question, is who do you trust?
If the encryption is good, shouldn't it be fine to say that you use it? E.g. I need to share my public PGP key, but it does not make me particularly vulnerable, does it?
OpSec (Operational Security) is a huge part of the game. If you want to reduce attack surface you probably want to give adversaries as little to go off of as possible.