SQL Server field encryption - SQL Server Forums

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SQL Server field encryption

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AskSQLTeam
Ask SQLTeam Question

0 Posts

Posted - 2002-09-12 : 10:49:30

Peter writes "Hi.

currently, we are using a SQL Server 2000 database, and we would like to encrypt a field containing passwords in our database. Are ther any methods to encrypt a password, and to compare a encrypted and not-encrypted password?

kind regards

Peter Blanchaert"

robvolk
Most Valuable Yak

15732 Posts

Posted - 2002-09-12 : 10:53:12

There are the PWDENCRYPT() and PWDCOMPARE() functions that are undocumented and used internally by SQL Server. Be advised though that these functions are inherently insecure:

http://www.sqlteam.com/redir.asp?ItemID=10075

There's some more detail here:

http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=10966

If you need stronger encryption, there is a product call XP_Crypto available here:

http://www.sqlteam.com/redir.asp?ItemID=6391

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