If I use rot13
crypto I still can do text search.
For example:
Query: John
Encrypted Query: WBUA
Database Entries: John Smith => WBUA FZVGU
Jon Babe => WBA ONOR
Result: WBUA matches WBUA FZVGU
Are there more secure crypto methods (for example with a secure key), with that I also can do textsearch?
Thanks