SQL Encrypted Columns in WHERE Clause

Question

I am looking to apply SQL column level encryption using symmetric keys. The initial steps needed to create the Database Master Key, Certificates and Symmetric Keys seems st

Answer 1

One option you have is add a new column to the table (or have a WITH SCHEMABINDING view with a calculated column in it, and index that) with a one-way HASH of the search value. It doens't have to be a strong hash - something as simple as CHECKSUM will work. Then you hash the search value in your lookup and filter it by the hash, which is indexed. That way, you can expose something searchable and indexable, without actually exposing the value itself.

However, if there's another way to do this directly, I'd love to know what it is :)