Checking 3 Random Letters From A Hashed Password?
Sep 21, 2010
I have a system where I salt and hash passwords before saving them to the database, using FormsAuthentication in asp.net
What I want to do is, rather than ask the customer for their password each time, I just want 3 random letters from their password. How can I compare this to the hash in the database? Will hashing still work in this case? From what I gather hashing is only designed to be a one way process and shouldn't be decrypted, so is checking 3 random letters for a hash even possible?
View 1 Replies
Similar Messages:
Jan 15, 2011
I have a web form, which is to allow user to reset their password. When I clicked on the button, I got this error
"Input string was not in a correct format."
The code behind the button is:
[Code]....
When the user types in the new password, this new password will be hashed upon clicking the button and saved into the database.
View 6 Replies
Sep 9, 2010
I had been trying to solve this but there is a hidden key i wish someone point me to.
I had a simple membership database with users in first the Membership Provider configured for clear password to retrieve the original password .
Now a new requirement say that the password must be hashed and reset .
I configure the Membership password to hash , and Implemented the Reset Password Module.
My problem is as follow.
If the user is new registered user with the new configuration the password and the security answer is hashed.
also when I go and reset the password it continue to be hashed.
Now I thought that with new configuration if any previous user with clear text configuration , If he use the password Reset module , because my configuration now is hashed , I expected that the new password and security answer will be hashed . what happen is old user continue in clear text even if the configuration is hashed. so If I had new users everything is fine.
old users Membership Provider somehow know they had been stored in clear text and it keep change password and security answer in clear text . If I delete this user and create it , Membership Provider understand that everything will be hashed. I need to know how it know this , I need to migrate users not to delete and recreate users .
Also if there are no solution for that , I wish Microsoft Consider it in future cause it is a real user scenario, that can happen imagine a business system that related to membership user Id , deleting users and recreate them is not a solution .
View 1 Replies
May 26, 2010
I have an ASP.NET application that requires impersonation as an administrator user. In web.config:
<identity impersonate="true" userName="administrator" password="password"/>
The customer complained about saving the password in clear text format. Is there a way to save the password here as hashed?
View 1 Replies
Feb 16, 2010
i m searching a way to compare the password in hash formatting. the saved password in database is in hash formatting and trying to change password. the changed password should be save in hash formatting as well. plz tell me the solution.protected
{
HashedPassword =
void btnSubmit_Click(object sender,
[code]...
View 3 Replies
Jul 28, 2010
i have implemented asp. net membership authentication and one of my users has forgotten his password.
The passwords are hashed and when i try retrieveing his password i get the error that password retrieval is not available for hashed passwords.
Should i reset the password?
View 13 Replies
Mar 30, 2010
I'm using a website as a frontend and all users are authenticated with the standard ASP.NET Membership-Provider. Passwords are saved "hashed" within a SQL-Database.Now I want to write a desktop-client with administrative functions. Among other things there should be a method to reset a users password. I can access the database with the saved membership-data, but how can I manually create the password-salt and -hash? Using the System.Web.Membership Namespace seems to be inappropriate so I need to know how to create the salt and hash of the new password manually.
View 4 Replies
Sep 17, 2010
i am generate random password and show it in a textbox. when i am set textbox property textmode to password then it doesn't show in textbox but when i set it singleline then password shows in textbox. I am using following code --
textbox1.attributes.add("value",passwordvalue);
for show i am using --
textbox1.text = textbox1.attributes["value"].tostring();
Same happing with when i edit record. password doesn't show in textbox.
View 5 Replies
Sep 17, 2010
My company has some unique password policies (such as a pwd cannot be re-used for 6 months, aside from the must include #, special character, upper & lower case)Can anyone suggest how to go about ensuring that a new user's password complies with these policies (using forms authentication in .net 3.5 framework)?
View 2 Replies
Mar 11, 2011
I want to create a random password generator in my ASP.NET C# web application.
I have created that but it is applicable only for the integer format. If I give any characters it shows the debugging error as "my input format is wrong".
But i want to enter both string and integer. For example my textbox field may be
[code]....
View 4 Replies
Nov 30, 2010
Using Stored Procedure (SQL) Am looking to generate a 10 digit alphanumeric number. How do i proceed.
Example:
132AXD1LKM
AD157LKJ1A
View 3 Replies
Aug 16, 2010
I Use Asp.Net Change Password Control.I want to make shure that new Passord won't be the sae as Old Password.Is ChangingPassword Event Using for this process?How Could I Compare NEw Password Which is ClearType with Hashed Password which Saved In DB.Note:I Use ASP.Net Builtin Membership.
View 2 Replies
Jan 18, 2011
Even with https enabled, you can write a password to the event log in code-behind. Any way to keep that password encrypted in code while you're checking it against a data store?
(using Login control)
(couldn't add comment to Andrew's answer, so I'm putting it here)
NTLM uses the username/password of the machine the user is logged into right? For this, I was thinking using ActiveDirectory on the server as the data store. It would have a diferrent un/pw than what the user is currently signed in to their machine as.
View 3 Replies
Dec 15, 2010
I create a table as picture below :
when I insert any character to column Name then A new string random will auto insert into column Random (picture below) I had used Trigger but It was error !
I want to column Random use to code :
DECLARE @myid uniqueidentifier
SET @myid = NEWID()
insert into table_1 values(@myid, substring(CONVERT(varchar(255), @myid), 1, 5))
but It must auto like column Number (column Number is Identity)
View 1 Replies
Feb 9, 2011
I'm finding surprisingly little information on converting an existing database from Encrypted passwords to Hashed passwords. (I was able to find a bit more information on converting the other way, but it wasn't of much help.)
As most people know, changing the passwordFormat setting in web.config only affects new users. I have a database with a couple of hundred users and I'd like to convert them to use hashed passwords without changing those existing passwords.
View 3 Replies
Mar 14, 2011
I can recover my password but when I try to change my password to something a bit easier to remember it gives me:
Password incorrect or New Password invalid. New Password length minimum: 7. Non-alphanumeric characters required: 1.
View 7 Replies
Jan 3, 2010
I setup a website to use hashed passwords with the membership provided by Asp.net. I'm looking for a way to convert all passwords to clear text. Hashed passwords are overkill for this site and many users can't figure out how to cut and paste the complex temporary password when they request a forgotten password. I understand that you can't retrieve a hashed password.
<membership defaultProvider="CustomizedProvider" userIsOnlineTimeWindow="15">
<providers>
<clear/>
<add name="CustomizedProvider"
type="System.Web.Security.SqlMembershipProvider"
applicationName="MyApplication"
connectionStringName="MyConnString"
enablePasswordRetrieval="false"
enablePasswordReset="true"
requiresQuestionAndAnswer="true"
requiresUniqueEmail="false"
passwordFormat="Hashed"
minRequiredPasswordLength="5"
minRequiredNonalphanumericCharacters="0"/>
</providers>
</membership>
View 4 Replies
May 13, 2010
I have a problem .I am using CAPICOM for digitally sign the data and for this purpose i am using SHA1 algorithm.In CPICOM there is one class CAPICOM.SignedData which is used for this purpose.My problem is how can i give SHA1's hashed data to this class (to it's sign method) for returning the digital signature of exactly 172 bit long?
MY CODE...
[code]....
View 1 Replies
Aug 12, 2010
I've taken over a website which has around 3000 users registered using the standard asp.net membership provider on a SQL database. When the website was set up there were a lot of gaps in the system and we have a lot of tidying up to do of users with the same email addresses etc and invalid addresses so i'm just starting to look at how i can wrap all of this up and make administering the user accounts easier.
At the moment the account passwords are stored in "Hashed" format set in the web.config and obviously this doesn't allow for password retrieval. I want to know whether there is a way of converting all of these passwords from a hashed format to an encrypted format thus allowing me to create a password recovery page that doesn't then send the user a new password which is quite often something like "a*ns7#<3lx"
Ideally i'd like to convert all of these if that is possible so that I do a much simpler password retrieval system. If this is not possible can you tell me how i go about setting the passwordreset value not to contain all sorts of non-alpha/numberic characters?
View 10 Replies
Jan 15, 2011
So as the title suggested, I'm currently trying to compare the hashed answer in my database against the answer typed in the textfield by the user in the form.
I thought of hashing the answer in the textfield typed by the user first, and after that compare this newly hashed answer to the one in the database (which is already hashed). But when I typed in the SAME answer (before hashing) and hashed it to get the hashed value, by right the 2 hashes (in web form and database) should match? Somehow, it didn't. And I can't seem to get security answer right anymore (even though I typed the SAME security answer).
This is the code behind the button:
[Code]....
I tried in another way too, but still the same thing.
[Code]....
View 4 Replies
Mar 11, 2011
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?
View 4 Replies
Mar 16, 2010
I have a asp.net page with .net controls. For a long time, many years, pages was run correctly. But lately some signs were change from their normal display mode to squares. Looks like some encoding issue, but changing it, dosen't .How can I resolve this issue? Why do I see square boxes instead of some signs?
View 3 Replies
Nov 19, 2010
I would like to know what the expression for "letters only" is for my asp.net web application. I tried ^[A-Za-z] but it does not work I would also like a regular expression for "numbers only except "-"
View 3 Replies
Jan 10, 2010
i am trying to rewrite utl's that contain Hebrew letters, using regular expression, and i am facing some difficulties: This is rule i am using:
<rewrite url="^~/(.+)?sbc_forum([0-9]+)(_([-a-z0-9]+))?.aspx(?(.+))?$" to="~/$1Default.aspx?g=forum&c=$2&$6" processing="stop" />
The bold text suppose to validate pattern that match to Hebrew letters. I am trying to use: ^[p{L}]+$. But its not working..
View 3 Replies
Oct 29, 2010
I receive lists from a web service and then I convert the lists to datatable and then I add the datatables to a dataset and from there I get the xml from the dataset where I can save it into a sql database. But the problem is that the xml has /r/n between all attributes and elements. I dont know how to get this out of the xml. Can this be because of my converter. If so can anyone give me a better way to get multiple lists into a dataset.
View 2 Replies
