@underlap Oh man, I feel this so hard. This is giving me flashbacks! I recently needed a PELT library for C# and ended up in the same boat - zilch options, so I had to code it myself.

Gotta say, I'm impressed by your patience. I probably would've thrown in the towel and started rolling my own way sooner. But hey, that Cloudproof FPE does sound promising. Curious to hear how it goes when you jump back in.