how to store password in Hash format and compare while login

Question

0.00/5 (No votes)

See more:

Hello friends,
i am developing an application in VB.NET and i want my application to be secured and that is why i want to know how can i encrypt the password and store the hash string into Database.

and when user logs-in it should convert the password into hash and comapre to the stored password and authorise the user.

Thanks.

Posted 15-Oct-11 1:25am

Jαved

Updated 15-Oct-11 1:27am

v2

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Accepted Answer · 2011-10-15T01:31:00

Solution 1

Try here: Password Storage: How to do it.[^]

Posted 15-Oct-11 1:31am

OriginalGriff

Comments

Jαved 15-Oct-11 8:58am

Thanks OriginalGriff.

Muhammad Shahid Farooq · Accepted Answer · 2011-10-15T01:52:00

Imports System.Text
Imports System.Security.Cryptography

Public Function computeHash(ByVal strPassword As String) As String
Dim plainTextBytes() As Byte = Encoding.UTF8.GetBytes(strPassword)
Dim hash As HashAlgorithm = New SHA256Managed()
Dim hashBytes() As Byte = hash.ComputeHash(plainTextBytes)
Dim hashvalue As String = Convert.ToBase64String(hashBytes)
Return hashvalue
End Function
By using the above function encrypt your password and store the encrypted string into database. On login compare the hash value of textbox with the database value that you have saved.