Password hashing and storing

Hi,
I have an application that needs to maintain user accounts , it needs to store their usernames and passwords somewhere securely, i looked for ways to accomplish that and found that i need to hash and add a salt to the passwords before storing them ..all this is fine, the problem i have now is how and where to store them because my application can't use a database, i thought i might store them in simple text files but this would be very simple to crack, i don't wanna use the Windows registery because i want to maintain the portability of my application ..I would appreciate it very much if someone can give some help on how to accomplish this..Thanks in advance

for user passwords: you don't have to store them. just create a MD5 hashcode of each password and you can store it in simple textfiles. these can't be cracked because the passwords are not stored - just their hashcodes. when a user logs in, a hash code of the user's password is created and compared to the stored hashcode. voila! this is basic user password handling as the passwords are stored nowhere but just in the user's head. (for initialization, create a default password hash code and force the users to change their default password at least on first login.)

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If I upgrade to FF 4, will all bookmarks and stored passwords automatically be transferred to 4?

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View Password hash in Active Directory

Hi all
I am the administrator and i want to view the password hashes of the users in Active Directory. Please tell me how i can view the password hashes of the users. Where are the password hashes of the users stored in Active Directory.

Hi,
Before going further, let’s clarify how Windows store password.
Instead of storing the user account password in clear-text, Windows generates and stores user account passwords by using two different password representations, generally known as "hashes." When you set or change the password for a user account to a password that contains fewer than 15 characters, Windows generates both a LAN Manager hash (LM hash) and a Windows NT hash (NT hash) of the password. These hashes are stored in the local Security Accounts Manager (SAM) database (C:\Windows\System32\config\SAM file) or in Active Directory (C:\Windows\NTDS\ntds.dit file on DCs).
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How to prevent Windows from storing a LAN manager hash of your password in Active Directory and local SAM databases
http://support.microsoft.com/kb/299656
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Regarding the security of password, the following article may be helpful.
Should you worry about password cracking?
http://blogs.technet.com/jesper_johansson/archive/2005/10/13/410470.aspx
Hope this information can be helpful.
This posting is provided "AS IS" with no warranties, and confers no rights.

Exporting password hashes

Hi,
We are currently implementing a third-party recruitment application and we are in the process of programming the interfaces between SAP and the new application. One of the interfaces that we have to develop is the one for user accounts.
The vendor gives us two options regarding user passwords:
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or
#2. To send an MD5 or SHA512 encoded password hash in the password field.
Is there anyway to get the password hash through a funciton module or any other mechanism in order to transmit it to the other application and allow our employees to use the same login information between both applications?
We thought about picking an infotype field (like PERID or GBDAT) and using it to reset the passwords, but in that case, we'd be sending personal information in clear text, which we are trying to avoid.
Best Regards,
Robert

The below is from:
http://www.ntdsxtract.com/downloads/ActiveDirectoryOfflineHashDumpAndForensics.pdf
The solution introduced by Microsoft in order to provide this protection is complex and
composed of 3 layers of encryption of which 2 layers use RC4 and the third layer uses DES.
In order to decrypt a hash stored in NTDS.DIT the following steps are necessary:
1. decrypt the PEK (Password Encryption Key) with bootkey (RC4 - layer 1)
2. hash decryption first round (with PEK and RC4 - layer 2)
3. hash decryption second round (DES - layer 3)
Paul Bergson
MVP - Directory Services
MCITP: Enterprise Administrator
MCTS, MCT, MCSE, MCSA, Security, BS CSci
2012, 2008, Vista, 2003, 2000 (Early Achiever), NT4
Twitter @pbbergs http://blogs.dirteam.com/blogs/paulbergson
Please no e-mails, any questions should be posted in the NewsGroup.
This posting is provided AS IS with no warranties, and confers no rights.

Configuring AD LDS Password Hash Algorithm

Hello,
I have a client which has a requirement that the passwords in Active Directory should be stored using the Secure Hash Standard (SHS) standard. This could be SHA-1 or SHA-2.
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Windows Server 2008 R2 Enterprise
Forest & Domain functional level: Windows Server 2008 R2
Thanks!

Hi Levente,
I don’t think it is possible to specify algorithm to encrypt AD passwords. The password is computed by RSA MD-4 and MD-5 algorithm.
More information for you:
Help: How to configure encryption/hashing policies on Active Directory 2008 LDS
http://social.technet.microsoft.com/Forums/windowsserver/en-US/04591e6e-22d3-4251-ab55-b778a479465e/help-how-to-configure-encryptionhashing-policies-on-active-directory-2008-lds?forum=winserverDS
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http://social.technet.microsoft.com/Forums/windowsserver/en-US/63e3cf2d-f186-418e-bc85-58bdc1861aae/view-password-hash-in-active-directory?forum=winserverfiles
Active Directory hashing algorithms used?
http://social.technet.microsoft.com/forums/windowsserver/en-US/7fbc0669-2ccb-4c24-9f08-24241e30d72b/active-directory-hashing-algorithms-used
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http://social.technet.microsoft.com/Forums/windowsserver/en-US/5bed809e-3e04-4917-b940-47d3c758987f/md5-passwords-in-active-directory
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Password hashing on client side

Hi. I would like my users to have their passwords hashed in SHA1 at the client side when they login so that when the html form comes to the server, the password is hashed and in case if the form is being eavesdropped on , I do not need to worry about the passwords in plain since it's hashed.
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So simply, is there anyway to hash passwords in client side using JSP before it is sent to the server ?

Not using jsp no, because JSP stands for Java SERVER Pages. Meaning that java/jsp only runs on the server.
You can do it in javascript client-side: http://www.movable-type.co.uk/scripts/sha1.html
But whats the point?
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Hello Everybody,
We have integrated AD with our CUA system.
Is it possible integrated the same password CUA and AD?
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Thank you,
Luciana

Luciana,
I am not sure if you are aware, but the Active Directory domain controller uses a protocol called Kerberos to authenticate a user when they logon to the domain. Therefore, to logon to SAP in the way you require it is best to use Kerberos so that the credentials for the user already available on the workstation, in the credentials cache can be used to securely authenticate the same user to the SAP system, e.g. CUA ABAP via SAP GUI. This means that no passwords need to be transmitted or stored anywhere, and the only authentication needed is that already done using Active Directory when the user logs onto their Workstation. Also, you can use this method to encrypt the communications - giving you added benefit, rather than just using the authentication provided.
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I hope this is useful ?
Thanks,
Tim

Passwords disappeared and will not "stick" after reentered

Hello - I've run into a strange issue that I have never encountered before with my stored passwords in multiple applications, my passwords have all disappeared and no matter how many times I re-enter them they will not stay, i keep having to re-enter them every time I alunch an application.
Apps so far that this have happened in are iChat, Adium, Dreamweaver, Transmit and Entourage.
Here's what happens:
1. Launch app. For example, I launch my Entourage, and it immediately tries to log into an email server to check email.
2. A dialog box come up asking for the password for the email account. E-mail account field is filled in, but the password has disappeared, and the checkbox for "save password" is deselected. This happens for any e-mail account, be it POP3, IMAP, gMail, Yahoo, any of my accounts.
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I have to do this every time I launch an app that requires some sort of password access, and the passwords do not stay in the rebuilt keychain - they disappear once the app is quit and then re-launched. Even if my mac is not restarted but the app is quit and then re-launched, the passwords do not stay in the keychain.
Note: I am the only user on this Mac, and I do require a password to log-into the computer - I use the same password for login as I do for my keychain access.
Any ideas?

OK - here's where I am with this, any help anyone here could give me would be greatly appreciated.
I booted from my 10.4 install dvd and ran disk utilities on the volume, and it did find and repair some problems. Booted mack into the os and ran keychain repair, which found no errors. However - the problem STILL occours with passwords not staying in my apps and in the Finder.
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- Entourage
In the finder, this is happening when I try and mount server volumes - even though I tell Keychain to save my passwords, they are not saved.
I'm beginning to think that this is either a memory issue or maybe even the installed battery on the motherboard - I use my computer constantly, and it is on nearly 24 hours a day / 7 days a week. Or maybe I'm just looking for a reason to upgrade to an Intel PowerBook Pro?
Any help would be greatly appreciated. Thank you everyone!

After updating office365's password, can't login outlook, always let you input password again and again

Dear all,
This is a real issue in working. User uses win7 and Outlook2007.
The issue is that after updating office365's password, users can't login outlook, always let you input password again and again. Sometimes, we can fix the issue by deleting current outlook profile then create a new one. But sometimes the method can't work.
What is the root reason?
Many thanks,
Franklin hong

Hi Franklin,
Firstly, please make sure you can access the mailbox with the new Password in OWA. Then check your Account settings in Outlook 2007:
Click Tools > Account Settings. In the E-mail tab, double click the Exchange account. Click More Settings > Security > Select Negotiate Authentication > OK.
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1. Launch the Credential Manager from Control Panel > All Control Panel Items > Credential Manager.
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Winnie Liang
TechNet Community Support

Password hashing and storing

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