We help IT Professionals succeed at work.
Get Started

How do I use PasswordSalt and MD5 hashing in asp.net formsauthentication- based on a php salt

DidiahProd asked
Last Modified: 2012-05-06
I'm migrating a vbulletin php application into an asp.net application.  I have passwords that were created using the following code:

$phphashedpassword = md5(md5(password) + salt) ;

now i have an md5 based password and hex driven salt.

How do i authenticate with these parameters using formsauthenticaiton?
the following code doesn't work:

Dim saltAndPwd As String = String.Concat(clearpassword, salt)
hashedpassword = FormsAuthentication.HashPasswordForStoringInConfigFile(saltAndPwd, "md5").ToLower

in my opinion, hashedpassword should be the same as $phphashedpassword.

Watch Question
This problem has been solved!
Unlock 1 Answer and 2 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE