i need to verify if the password is correct for a user.
i have this code: private bool checkOldPasswordValid(string password, string username)
{
using (DirectoryEntry entry = new DirectoryEntry("WinNT://" + Environment.MachineName + ",computer"))[code].....
but this just gets the name and doesnt verify the password.
For our website, we have decided we would like to maintain our user passwords as encrypted binary data in our database. We are using ASP.NET 3.5 to host our site and SQL Server Express 2008 for the database, both running on the same server. When a user logs in and submits a username and password, there will need to be some sort of encryption or decryption in order to verify the credentials. To me, it would appear that there are 3 ways to do this:
1)[C# Encyrption] On User creation, perform encryption in the Web App and submit the encrypted password to the database. To verify credentials at Login, perform the same encryption on the submitted password and ensure that it matches the value stored in the database.
2)[SQL Encryption] On User creation, submit the plain-text password to the database and have it perform one of the SQL encryption variants during INSERT. To verify credentials at Login, have the database perform decryption on the password during the SELECT statement, and compare the plain-text submitted password to the one in the database.
3)[Mix] On User creation, submit the plain-text password to the database, and have it perform one of the SQL encryption variants during INSERT. To verify credentials at Login, perform the same encryption algorithm used by SQL on the submitted password ( is this possible? ), and ensure that it matches the value stored in the database.
Does anybody have an opinion as to which of these options is best? Number 1) is the most familiar to me, and would be the easiest to use with LINQ to SQL ( which is our current data model ), so I am leaning towards that. But if there are better options I would love to know about them.
I have create a masterpage and add content page include user (firsname,lastname,password,new password,confirm new password adn etc..)detail update field. i try to give a client side validation all the function work,but in confirm password its not hide wen give a correct password.. anybody give correct solution..code are below..
My Login.aspx form in Visual Studio 2013 just seems to be 'static' after I enter the correct username and password. I don't get any errors. My Login.aspx.vb code looks like this:
Don't I need a file name/URL to direct the user to after he has successfully logged-on? How would I script that? Finally, I only have one Web.config file (associated with Register.aspx) and that looks like this:
I am biginner regarding Database in vb.net I have a ms access as db
Field names as follows.. Uname and UPassword, the table is named as accdb and saved as useracc.mdb in 2k3 format... While in my vb.net my main page form has the followings
2 label boxes for Name and Password 2 text boxes namely loginid.text and loginpass.text A button named Login Here are the codes that i am working on
im using asp.net for my webpage. im also using the login control too. i want it so when the user types in the correct user name and password, it redirects to a new page called test.aspx. i dont want to use login view.
I am doing a workshop , it has questions, and answers with radiobuttons, I need that when a click is made on a radiobutton a message appears saying that it is correct or it is not correct, how can a do it,
I am using 3 tables and are trying to get the correct info belonging to the correct id. Like this: I go to a page and here i want to see the information from the 3 tables using a specific id.
I have written this so far in a query:
[Code]....
My problem is that the last line does not work and i am uncertain how to make this work? How to write it correctly that is.
When a user that has their IE set to save passwords hits my "Reset Password" form, the first text box set with TextMode set to "Password" is populated with the users saved password. Understandable, this is not the affect I would like as this is their "old" password. I cannot set the text of a text box with mode set to "Password" (naturally). Does someone know how to suppress or clear this value when IE is saving passwords?
I am using Entity Framework with partial classes added on so I can use DataAnnotation attributes. Does anyone know how to add a data annotatin which will verify that a field is a whole number (or a DataType of int or long)? I'm surprised there is no [DataType(DataType.Integer)] attribute. I tried to create a custom attribute, but it doesn't work because the value it receives is always null:
[code]....
Obviously I'm missing the point, but I don't know enough to know what I'm missing.
so I have code like above, I need to assure a record was actually returned before trying to use it... I assumed I could test for null, but that doesn't appear to work.
I tried: if (task != null) {yada yada yada}
but if I put an ID that doesn't exist in my querystring it throws an exception 'sequence contains no elements'. I realize I can catch the exception but I want to understand how I should be checking for a returned record. The .Single method intellisense says it returns exactly one record or throws an exception if more than one is found... is it also throwing the exception when zero are found I'm not sure if the issue is my check for null or that line that calls .single itself? Now I'm guessing I'm supposed to just catch the exception on the line that's calling .Single... yes?
I am maintainign a ASP.NET app. Some of users action are pretty slow; one of my colleagues claim it is caused by network bandwidth as some used dll will connect over to internet to get data.
How could I verify it's really due to network issue? Any tools can peer the network connection during the process?
what is the code to retrieve the id associates with each checkbox and read if whether each checkbox is checked or not in the controller action(I will need to get the status in both conditions, checked or unchecked )?
I posted this previously but it ended up in Languages/C# rather than here. I'm not sure if I chose the wrong forum or the admin moved it. I wanted it in here so I'm re-posting it:
I have an APK file (android application archive, same as JAR file format) that I need to determine whether or not is signed, and if so, extract the certificate info.
The JDK provides a command line tool to do this:
jarsigner -verbose -certs -verify file.apk
I'm trying to determine if there's a way using the Security classes to accomplish the same thing in C# code.
Does anyone check the domain of an email address as part of their verification steps? eg. Confirm that gmail.com exists if the user specified blah@gmail.com as their address.
I should note that in my webapp an existing user can forward invites to their friends. I have no need to verify those invites at all. Rather, I just want to warn my user if a typo etc. may be sending an invite to the wrong person. Is this even worthwhile to do?
How do I check if a value in the dropdownlist is in the table bound to the girdview?
Some fields bound to the gridview contain values that are not in the dropdownlist. I would like to check in the code behind whether the value is there and if not set the ddl selected value to "Select" with a value of "". If the value is there then set the selectedvalue to the value in the gridvidew.
i am facing problem with google map control, actually i want to verifiy address return given From,To address showing on map but i want to get verification of address either they are correct address or not how can i verify the addresses and get complete addresses back
How do I check which LinkButton is clicked in the Page_Load of the page. This is to avoid calls to service so that it only executes what is present in its event.
I am building a web application that is limited to one database, thus I cannot use the handy ASP.NET config tool. I am attempting to use SqlClient to authenticate users from a user table I added to my database. Here is the code I have thus far: