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- #Get plain text from pscredential code
- #Get plain text from pscredential password
- #Get plain text from pscredential windows
The ConvertTo-SecureString and the ConvertFrom-SecureString cmdlets support the -Key and -SecureKey parameters for this purpose.
#Get plain text from pscredential password
Using the -Key parameter ^Ī remedy is to not rely on the DPAPI but to use your own key to encrypt the password instead.
#Get plain text from pscredential windows
This is all managed by the Data Protection Application Programming Interface (DPAPI).Īnother problem is that, if you sysprep the machine or reset the password of the Windows account that created the encrypted password, you also no longer have access to the key to decrypt your saved password. After you log on to the Windows machine, you have access to the key that allows you to decrypt the data. This works similar to the Encrypting File System. This is why it is possible to access the password in clear text as mentioned above. If you try to decrypt the password on another machine or with another Windows account, you will receive the following error message:ĬonvertTo-SecureString : Key not valid for use in specified state $Credentials = New-Object "User", $SecureStringĪ problem with this method is that it only works if you are logged on to the same computer with the account that created the encrypted passwords. $SecureString = ConvertTo-SecureString -String $EncryptedPW
#Get plain text from pscredential code
The following code reads the encrypted password from the text file and then creates a PSCredential object: $EncryptedPW = Get-Content -Path "C:\tmp\mypw.txt" The Set-Content cmdlet then saves the password in a text file. The ConvertFrom-SecureString cmdlet takes a secure string as input and converts it to a real string that contains the encrypted password. Set-Content -Path "C:\tmp\mypw.txt" -Value $EncryptedPW $EncryptedPW = ConvertFrom-SecureString -SecureString $SecureString Saving an encrypted password ^Ī better option is to save the encrypted password in a text file: $SecureString = Read-Host -AsSecureString A password in clear text in a script is not really best practice. I guess it is the developer’s way of saying that you are about to do something naughty. It is always required if you use the -AsPlainText parameter. The thing with the -Force parameter is a bit awkward. If you don’t want to prompt a user for the password, you can use the ConvertTo-SecureString cmdlet, like this: $SecureString = ConvertTo-SecureString "mypw" -AsPlainText -Force You can use this method to also create an encrypted password and save it to a file (see below). $SecureString = Read-Host -AsSecureStringĪfter you’ve stored the password in a secure string, you can create the PSCredential object with the New-Object cmdlet as described above.
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The difference between Read-Host and the Get-Credential method discussed above is that, with Read-Host, you only provide the password. You can prompt the user to enter the password with the Read-Host cmdlet, together with the -AsSecureString parameter, or you can use the ConvertTo-SecureString cmdlet. You have two options for creating a SecureString object. The term “secure string” is perhaps a bit misleading because a secure string is not a standard string but an object of the type SecureString. The $SecureString variable contains the password as a secure string.
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The $UserName variable should contain a string with the username. The second option mentioned above to create a PSCredential object using the New-Object cmdlet works like this: $Credentials = New-Object $UserName, $SecureString Here’s how: $Credentials.GetNetworkCredential().Password You can access the password length like this: $Credentials.GetNetworkCredential().Password.LengthĪnd, if you’re wondering whether you can also get the password in clear text, yes, this is possible as well. To read the domain the user enters, you need this command: $Credential.GetNetworkCredential().Domain To view the username, you can use this command: $Credentials.UserName To get a list of the available properties and methods, you can pipe the object to the Get-Member cmdlet: $Credentials | Get-Member The PSCredential object has a few properties and methods that allow you to evaluate the credentials before you use them for authentication. New-PSDrive -Name K -PSProvider FileSystem -Root \\server\share -Credential $Credentials We store the PSCredential object in the $Credentials variable, which allows us to reuse the credentials in the script. The next example demonstrates the usage of the Get-Credential cmdlet. You can use the method with the New-Object cmdlet if you don’t want to prompt the user but load the password from a file instead. The Get-Credential cmdlet prompts the user for username and password. You can use the Get-Credential cmdlet or the New-Object cmdlet. If you want to create a PSCredential object in your script to avoid prompting the user multiple times, you have two options.