Encrypting Existing Passwords?
Aug 5, 2010
found while searching for help on my asp.net application.I have a small application with connected to a SQL database. As it was so small, and contained very little data of any importance, i had set it up with Clear passwords.Now i have been asked to expand the database considerably, and encrypted passwords are now required. I can easily modify the web.config so all future users are set up with encrypted passwords. But is there any way to change all existing users passwords to be stored encrypted?
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Similar Messages:
Aug 4, 2010
I have a small database, with a very small number of users. The passwords were stored as clear as the database was so small and held no sensitive data. The database is now to be expanded and passwords are required to be encrypted. I can change the Password Format in the web.config, but is there a way to change the existing passwords from clear to encrypted?
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Feb 9, 2011
I'm using ASP.NET membership for a site that will serve primarily sophisticated users. I understand the difference between hashed and encrypted passwords, and I'm trying to decide between the two.After my last client complained bitterly about hashed passwords being a total PITA, I've started to favor encrypted passwords. But someone suggested this just isn't secure enough.So my question is: What, exactly are the risks of encrypting passwords? Any person with the ability to steal passwords by decrypting them from the database would surely have the ability to reset them if they were hashed, no? I'm having trouble seeing where someone could cause trouble with encrypted passwords but couldn't with hashed ones. Making it convenient for users is also important.
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Nov 1, 2010
I want the login password to not be sent in plaintext (due to the risk of hijacking). I know that this can be achieved in principle using MD5 or the like, but is there a common implementation for use with Asp.Net? Of course, it's crucial that the resulting hash (?) isn't easy to decrypt. When I read various posts on this matter, some people say it's just to do a reverse on the encrypted string, so that in effect, this is totally useless.
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Mar 9, 2011
I seem to be having some difficulty working out how to encrypt the user's password at the time they register for an account. To ensure that I am storing the password securely, I would like to be able to encrypt the password before it is inserted into the database.
When the user logs in I can then encrypt their password at log in time and compare this to the encrypted password in the database, meaning that the password in the database never needs decrpyting.
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Mar 4, 2011
I have been killing myself over this for a couple weeks now and cannot find a viable solution. Here's my scenario:
I have a DTSX package that imports user data from an external database. It then creates user accounts and profiles in the local database. Users can also be created via a custom ASP.NET Membership Provider. The provider must be able to authenticate both types of users.
This was all fine and dandy during development because passwords were stored as clear text. However, now that we're ready for release the passwords format of the provider must be set to encrypted and so the users created via the DTSX must be created with an encrypted password. (I'd prefer the passwords were hashed but the client's requirements are that passwords be recoverable). The real problem seems to be creating an encrypted password within the DTSX that will be decryptable by the ASP.NET Membership Provider.
My original solution was to have the DTSX call a CLR stored procedure that had access to the same encryption logic as the provider. I got it working but our client wouldn't enable CLR integration. So that's out the window. Now I'm investigating alternatives. One alternative is to simply use the built-in encryption methods of T-SQL. But how do I share the keys used for the encryption/decryption?
My question is, is it possible to generate a password in T-SQL, say using EncryptByKey, that will also be decryptable by my provider? This means that the key in SQL must match the key in my machineKey configuration.
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Aug 4, 2010
My issue today is that i have a MySQL Database and am using the security framework provided by the ASP.NET Membership and Role Providers...I override the default methods with my own MySQL.
Now the issue comes in when i someone would like to have their password reset. My application is running entirely on an Intranet so i cannot have their passwords emailed to them. Is there a way i can have this information displayed in any way so that the user can use it to Log Reset, Create Accounts or Recover their lost passwords on an intranet without the administrators intervention?
Recently i had an approach as follows. In my web.config<system.net><mailSettings><smtp deliveryMethod="pickupDirectoryLocation" and my location was a folder on C drive as c:/SavedPasswords. Now i understand this was such a big security threat and thats why i am looking for a better option.
I would have that folder created using my System.IO and then the Mail is dropped into that folder. Then after the process is successful, i tell the user to check into that location and Read its content.
Then there is a global variable that is set to true...meaning that the folder at c:/ has been created. then there is a Method in a certain class that once it sees this variable True, it reads the readers c:/ and deletes that folder "save" if it exists;
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Oct 21, 2010
So I'm in the process of writing an ASP.NET application that requires to import users from a PHP application. The passwords were hashed using MD5 into the database, so the user table records looks more or less like this:
user Password
user1 827ccb0eea8a706c4c34a16891f84e7b
user2 e10adc3949ba59abbe56e057f20f883e
And so on. I have access to the PHP source code and I can see that there is no salt or anything else, it is juts a straight MD5 application. Now, Back on my ASP.NET, I tried to use MD5 using the following logic:
[Code]....
Problem is, that is returning strings like 50-F8-4D-AF-3A-6D-FD-6A-9F-20-C9-F8-EF-42-89-42, which of course is not going to match with the information in the database. What should I do so I don't have to reset 500+ user passwords?
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Oct 12, 2010
I have been trying to encrypt password and found a code which is working with Access fine but as i have changed to SQL it is not decoding the encrypted text.. it amazes me..this SQl code is not letting me log on..
[Code]....
Whereas this OlebDB/Access is working fine
[Code]....
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Aug 24, 2010
i'm working on already built asp.net webapplication. in the web.config for connectionString section i have seen this
<add name="MyConnectionString" connectionString="3abcde12n3kd03kldwqaswe45tdw4fo23003ld3ddfot0lkdpe2d" providerName="System.Data.SqlClient"/>
can anyone tell me on how this encryption done? i know the standard way of encrypting using aspnetregiis.exe which replaces the entire connnectionString section of the web.config.
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Apr 4, 2011
would please someone guide me how to encrypt and decrypt cookies in Asp.net 2.0.
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May 3, 2010
I am wondering how to encrypt the below information in the "web.config" file of the "Account" folder (where we have the secured pages):
[Code]....
My issue here is that even after I compiled my application (using "aspnet_compiler -v /reports c:
eports"), the information inside the web.config file of the Account folder still not encrypted, and I want to publish my site to the customer server. So, since this server is a customer server, then they can access this "web.config" file and change our web-application security behaviour (correct me if I am wrong). Basically, I don't want the customer to even have access to our secured pages when they access our web-application using the web browser. How to solve this issue?
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Aug 17, 2010
I used the article Creating a Flexible Configuration Section Handler to create a Flexible Configuration Section Handler in my application.
I also saw this article entitled Encrypting Custom Configuration Sections on the OdeToCode blog, on how to encrypt portions of a web.config file.
From the first article, we have this web.config code.
[code]...
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Aug 26, 2010
I am getting the error "An error occurred loading a configuration file: Access to the path is denied."
When I am in VS 2010, I can Encrypt as long as I run as administrator. Code as follows:
[Code]....
My problem is I need to run this in IIS. What is stopping me? It's a permission problem, but what permission. I am running IIS 7.5 on Windows 7. This is happening on my production server as well. Same error.
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Mar 9, 2010
Is there any tools available to encrypt and decrypt Asp.net Web configuration sections like connection string ,etc.?
Can i get any add-on for this?If i use Enterprise Library i can do so,but without that is there any simple utility available?
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Nov 7, 2010
I just came across some code that seems to encrypt database keys prior to sending them to the client (WebBrowser, Silverlight, etc).
To illustrate, suppose you have a list of students to extra-curricular activities, and a relationship defined between them. Every time the data is written out to the ASPX page, the studentID and activityID is encrypted. Every time a write, or modify is made, this value is sent back to the server, decrypted, and saved to the database.
What could be the reasons to expose data this way? Is this a normal practice?
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Feb 4, 2011
Any section in my web.config file that I want to encrypt I run this command line util:
aspnet_regiis -pe "anySection" -app "/SampleApplication"
It all works just fine until I try encrypt my connectionStrings sections
I define (and I cannot change this) my connectionStrings section like this:
[code]....
Is there a way of doing this using the aspnet_regiis util? Doing it with code is not an option for me.
Also is there a way to run this untility without specifing the application (-app "/SampleApplication") instead giving the path to the web.config file?
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Mar 14, 2011
I have created an x590 certificate that is in the file :
"C:UsersmartinAppDataRoamingMicrosoftSystemCertificatesMyCertificates"
I am trying to acces the public key to encrypt some plain text.
The system is throwing an "System.ArgumentOutOfRangeException" at the line
Dim certificate As X509Certificate2 = certificateCollection(0)
Can anyone tell me where I am going wrong or tell me another way to access the public key
.................................................
This is the complete code:
Imports System.Security
Imports System.Security.Cryptography.X509Certificates
Imports System.Security.Cryptography.X509Certificates.X509Certificate2
Imports System.Security.Cryptography.Pkcs
Partial Class encryptwithcertificare
Inherits System.Web.UI.Page
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim encoding As UTF8Encoding = New UTF8Encoding
Dim cleartext As String = Textbox1.Text
Dim myStore As X509Store = New X509Store()
myStore.Open(OpenFlags.ReadOnly)
Dim certificateCollection As X509Certificate2Collection = myStore.Certificates.Find(X509FindType.FindBySubjectName, "bobby", True)
Dim certificate As X509Certificate2 = certificateCollection(0)
Dim code() As Byte = EncryptwithCertificate(cleartext, certificate)
Label1.Text = Convert.ToBase64String(code)
End Sub
Shared Function EncryptwithCertificate(ByVal cleartext As Byte, ByVal certificate As X509Certificate2) As Byte()
Dim encoding As UTF8Encoding = New UTF8Encoding
Dim cleartextsbyte() As Byte = encoding.GetBytes(cleartext)
Dim contentinfo As ContentInfo = New ContentInfo(cleartextsbyte)
Dim envelopedCms As EnvelopedCms = New EnvelopedCms(contentinfo)
Dim recipient As CmsRecipient = New CmsRecipient(certificate)
envelopedCms.Encrypt(recipient)
Return envelopedCms.Encode()
End Function
End Class
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Jan 27, 2011
When I use symmetric key for encrypting data in sql server using encryptbykey() function on column of table
For Eg:I use following code
create symmetric key symkey
with algorithm=Triple_des
encryption by pasword='abc_1234!!!'
GO
after this I require to open the key and then used the function to encrypt data but...
how excatly the key generated and password is used internally for encrypting data.what role the algorithm playhere.I would like to know the proper mechanism of it.Bit confused abt keys concept.
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Aug 24, 2010
I have a webApplication in which i want to encrypt the data using Public key and whan it reach to the destination webapplication it will decrypted there with corresponding private key . Is there is any way to creating this pair of key?
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Apr 22, 2010
I want to encrypt the password entered by the user....how do i go about it?is there any built-in function for it or will i be required to write a code for it?
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Sep 10, 2010
I have some data I want to encrypt in an ASP.NET MVC application to prevent users from tampering with it. I can use the Cryptography classes to do the actual encryption/decryption, no problem there. The main problem is figuring out where to store the encryption key and managing changes to it.
Since ASP.NET already maintains a machineKey for various things (ViewData encryption, etc), I was wondering if there were any ASP.NET functions which let me encrypt/decrypt my own data using the machineKey? This way I would not have to devise my own key management system.
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Jan 13, 2010
I have many ASP.NET applications running on server and i want to encrypt the web.config file for each.Is there a way I can encrypt all config files using single class/app or do i have to write separate code under each solution/project to encrypt config?I have idea how to do one file in a project usinghttp://davidhayden.com/blog/dave/archive/2005/11/17/2572.aspxBut i want to use a centralized or single app to encrypt all
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Nov 11, 2010
Am consuming a web service for example Calculator
Calculator CALC = new Calculator();
int a = CALC.Add("23","27");
and result will be stored in a;
Please help me to encrypt this request using the X509 certificate. Am having a certificate with public key and with subject "My Calculator"and also decrypt the result with the private key "abcdef" and with subject "My Response"
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Oct 3, 2010
I'm trying to encrypt a custom section in a web.config file. When I get to the line that calls ProtectSection(), I get an exception saying the provider isn't found.
Configuration config = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);
ConfigurationSection section = config.GetSection("MySection");
section.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
I tried it with RSA as well and got the same error.
Running aspnet_regiis.exe works, but I need to do this programatically.
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