[0xFFFF0000]

SQL Server has Always Encrypted - https://msdn.microsoft.com/en-us/library/mt163865.aspx

[sigmar]

That doesn't appear to use homomorphic encryption though

[michwill]

Yeah, that is actually deterministic encryption.

Microsoft had a very interesting research paper called CipherBase (we cited it), but I think they didn't end up commercializing that research