Contact US

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Having trouble validating a login password

Having trouble validating a login password

Having trouble validating a login password

I’m building a web based user access system based on the asp.Net Membership, Roles, and Profile system. I’m able to create new user accounts with a SQL stored procedure. Now I’m trying to validate a user login working against the stored use account details.

My aspnet_Membership table contains Password (encoded), PasswordFormat (1), and PasswordSalt (encoded) fields, along with a number of other fields. The create new account stored procedure has, in part, the following code:


SET @PasswordFormat = 1	-- 0=Plain text, 1 = Hashed, 2 = Encrypted
SET @UnencodedSalt = NEWID()

SET @PasswordSalt = dbo.base64_encode(@UnencodedSalt)

-- Encode the password
SET @EncodedPassword = dbo.base64_encode(HASHBYTES('SHA1',
	CAST(@UnencodedSalt AS varbinary(MAX))
	+ CAST(@ClearTextPassword AS varbinary(MAX)))) 
The unencoded salt gets encoded and saved, and this is the value in my table. Since the stored ‘salt’ value is encoded I’m not sure how to recreate the encoded password from the ‘ unencoded salt’ and the ‘clear text password’ that the user has just entered as they are logging in.

Any help would be appreciated.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members! Already a Member? Login

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close