问题
I have a column, that is encrypted using symmetric key in a database. An encrypted content is just a text. I would like to query this text using full text search. Is it possible? I was thinking about using full text search filters to index a column, but didn't find any ready-to-use filter. So is it possible to develop such a filter, in particular, is it possible to access encryption key, that is stored in a database, from filter code and decrypt the text from the column? Could you recommend any tutorial, how to start with such a development?
回答1:
From what I understand, there is no support for encrypted indexes. You basically have two options:
- You can index partial data in clear (without encryption) and match the partial data to the fully encrypted data.
- Decrypt the data before searching
Although this post was for SQL Server 2005, it remains true for SQL Server 2008.
来源：https://stackoverflow.com/questions/4312807/is-it-possible-to-use-full-text-search-on-encrypted-column-in-sql-server-2008