Problem solve Get help with specific problems with your technologies, process and projects.

Built-in facility to encrypt column data

Is there any built-in facility to encrypt a column data in SQL Server?
There is no documented facility for encrypting column data in SQL Server 2000. You can encrypt other elements of SQL Server, however, including:
  • Login and application role passwords stored in SQL Server
  • Any data sent between the client and the server as network packets
  • Stored procedure definitions
  • User-defined function definitions
  • View definitions
  • Trigger definitions
  • Default definitions
  • Rule definitions

If you're willing to get into the world of undocumented functions and such, then you might want to consider pwd_encrypt(...

) and pwd_compare( ). You can use pwd_encrypt to store an encrypted value into a column. You will never know what the value is, nor can you view it. But you can compare values to it, such as in a WHERE clause, using the pwd_compare function. I do NOT recommend this approach!


Do you have comments on this Ask the Expert Q&A? Let us know.
This was last published in July 2005

Dig Deeper on SQL Server Database Modeling and Design

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.