December 2013
Intermediate to advanced
1872 pages
153h 31m
English
book
Microsoft® SQL Server 2012 Unleashed
by Ray Rankins, Paul T. Bertucci, Chris Gallelli, Alex T. Silverstein
Content preview from Microsoft® SQL Server 2012 Unleashed
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
Column-Level Encryption
Column-level encryption (sometimes referred to as cell-level encryption) was introduced in Microsoft SQL Server 2005 and is still fully supported in SQL Server 2012. Column-level encryption offers a more granular level of encryption than TDE, allowing you to encrypt specific data columns in the context of specific users.
Column-level encryption is implemented as a series of built-in functions and a key management hierarchy. Implementing column-level encryption is a manual process that requires a re-architecture of the application to call the encryption and decryption functions explicitly when storing or retrieving data. In addition, the tables must be modified to store the encrypted data as varbinary. The data is then ...