How to retrive data with entity framework using lambda expressions when it was encrypted using symmetric key

See more:

ASP.NET

SQL

SQL-Server-2008R2

, +

OPEN SYMMETRIC KEY mykey
DECRYPTION BY PASSWORD = N'xyz+';
select CONVERT(varchar(15),DecryptByKey(empname)) from emptable

This is how we retrive using sql. How to do the same thing with entity framework using lambda expressions