"They" can bust one way 32 bit encryption? I doubt it seriously. Besides that encrypted messages don't set off those word filter alarms.
Just detecting a sophisticated cypher coming from your IP would be enough to raise a red flag, I would think.
Three letters
PGP
downloadable from the MIT website
The initials mean “Pretty Good Protection” (the most stunning understatement on the net)
To the best of my knowledge, when properly used, it has not been successfully broken.
A.A.C.