Can you store Object data inside a Field of an SQL Server DB and recall it at a later time?

would you Write your own data type for SQL to alow you to save your data object in SQL?

hmm.

what it is, i have a special Developed Class that stores data on Subscriptions. I would like to encapsilate all this data into one field but not store it as text. the data is rather sensitive and I'm just not sure the best method of storing the data.

I'm probably going to have to Hash it and store it, but I was wondering if it was posable to store the data as an object in SQL. it would be easyer in my mind to encrpyt the whole object instance of the class and store it than each individual field of the class.