When checking if a login is correct, you hash the password 1 in the same way as you did in the database, and check if they match. A decent hash which is available on all web servers is SHA Putting the user name in there as well means that two users with the same password won't be obvious in the database. Posted May am BobJanova. BobJanova Nov pm. Don't store the password in a reversible form. Store a hash, and offer 'reset my password' not 'tell me what it was'. After all, if they forgot it, a new random one is just as good to them.
If your manager tries to tell you it's a requirement, beat him about the head with a security best practice textbook until he stops. Copy Code. Posted May am Sachida. Ra-one May am. Rick Shaub May am. This is a one-way hash.
You can't decrypt it. However, if you added a salt, this would be the prefereable way to store passwords. BobJanova May am. You shouldn't use MD5 any more for new apps, it is a bit weak these days. Posted May am thatraja.
My 5 for the question! This is absolutely right thing to do. Now do it — you got my approval. Good luck, —SA. Posted May am Sergey Alexandrovich Kryukov. Marc A. Brown May am. It's so hard to resist posting this style of answer when we get that style of non- question.
You get my 5. Sergey Alexandrovich Kryukov May pm. Thank you Marc. I knew you would understand my feeling to have a little fun. Maybe this is just a chance to get a little compensation for more and more really frustrating questions coming. Security namespace to Encrypt your password string into 32 char encrypted string Password, "MD5" ; only one disadvantage is that there isn't any other method to decrypt your encrypted string For that you have to use other method or you can use any web service from the net that help you to encypt or decrypt your string Return clearText.
End Function. FromBase64String cipherText. Return cipherText. Encrypting and storing the Password in Database Table. The Username is inserted directly but the Password is first encrypted using the Encrypt function discussed earlier and then it is inserted. ConnectionStrings[ "constr" ].
AddWithValue " Username" , txtUsername. Trim ;. Open ;. ExecuteNonQuery ;. Redirect Request. AbsoluteUri ;. ConnectionStrings "constr". Using con As New SqlConnection constr. End Sub. Displaying the Usernames and Encrypted and Decrypted Passwords.
Then inside the OnRowDataBound event handler, the encrypted Password is fetched and decrypted using the Decrypt function discussed earlier. Fill dt ;. DataBind ;. Text ;. If Not Me. IsPostBack Then. Dim dt As New DataTable. Fill dt. End If. DataRow Then. Learn more. Decrypting an 'Encrypted' password from ASP. Asked 10 years, 7 months ago. Active 4 years, 5 months ago.
Viewed 26k times. Improve this question. The whole point of SSO is to delegate the authentication and not share login credentials. Your business reasons are skewed. I don't know how the MembershipProvider works, but isn't the point of having a salted password that you don't ever really decrypt the password, you use whatever the user entered for a password, apply the salt in whatever encryption method, and if the two encrypted result match, you're granted access.
I doubt you can actually get the clear text password without using some sort of brute force attack. Guys, I appreciate the comments, and while the business logic maybe skewed, the requirement is still in place.
The ASP. NET MembershipProvider gives the options of 'Clear', 'Encrypted' and 'Hashed' formats for passwords, suggesting very strongly that 'Encrypted' passwords CAN be decrypted - just finding out how is my question.
QMKevin: unless it's one-way encryption, which it is. You might have to implement a custom MembershipProvider if you want to implement decryptable passwords. In all honesty though, it's a bad idea. Cory Sorry to disagree more out of frustration and desire to learn, I promise , but I've read Encrypted passwords can indeed be decrypted, while Hashed cannot. I read that here Huh, I also just spotted on this link, a method that claims to let you convert an encoded password back to its readable format.
Not sure why I didn't see this before.. Let's hope this works! Show 5 more comments. Active Oldest Votes. Create a class that inherits from SqlMembershipProvider and in it you can call the decrypt.
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