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Encrypting a string to a varbinary(128)

This code is useful when encrypting sensitive data (like passwords) into a varbinary.

This code is useful when encrypting sensitive data (like passwords) into a varbinary. The PWDENCRYPT and PWDCOMPARE functions are used to encrypt and compare DATA passwords are not visible in anywhere in the database.

                
-- How to use PWDENCRYPT and PWDCOMPARE 

declare @pwd varbinary (128) 

Create table users ( userid int identity (1,1) not null, 
pswd varbinary (128)) 

-- INSERTING ENCRYPED value 
-- hard coded string should be replace 
-- by a text box value from screen 
Insert into users values (PWDENCRYPT ('eli leiba')) 

-- the dencryption  phase 
select  @pwd = pswd from users where userid = 1 

-- comparing : 1 is success, 0 is not 
select PWDCOMPARE ('eli leiba',@pwd) 

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