Format Preservation Encryption (FPE) wrappers (and testers) for .net using:
- "Format-Preserving Encryption" by Bellare, Rogaway, et a (http://eprint.iacr.org/2009/251)
- Botan library (https://botan.randombit.net/)
- DotFPE (https://dotfpe.codeplex.com/)
- "Rank-then-encrypt" pattern
Kudos to https://dotfpe.codeplex.com/ for original FE1 porting.