I'm making a "shortcut" PS1 script to update a domain user's password. I'd like to prompt the user for the new password twice without showing the password on screen. When I use $Text1=Read-Host ; $Text2=Read-Host ; $Text1 -eq $Text2 with the same input - '1' for example - the output of that one-liner is "True". However,

$Text1=Read-Host -AsSecureString ; $Text2=Read-Host -AsSecureString ; $Text1 -eq $Text2


$Text1=Read-Host -AsSecureString ; $Text2=Read-Host -AsSecureString ; (ConvertFrom-SecureString $Text1) -eq (ConvertFrom-SecureString $Text2)

return False.

The script as it is now, without prompting twice and comparing user inputs, is below and it works to reset a user's password.

$UserName = Read-Host "User name "
$NewPass = Read-Host -AsSecureString
Set-ADAccountPassword `
    -NewPassword $NewPass `
    -Verbose `
    -Identity ( (Get-ADUser -Filter "SamAccountName -like '$UserName'").DistinguishedName )

Working PS1 script to reset domain user's password


According to Technet, you have to "decrypt" the secureString with the following method:

$BSTR = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($text1)
$PlainPassword = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)

First, this converts the secure string to "Basic String" data type (BSTR), and from that back to a readable string. This will give you the plain text password the user entered. You could for example put this in a small function that you can call for both passwords like this:

 function Decrypt-Password ($secureString){
   $BSTR = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($secureString)
   $PlainPassword = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)
   return $PlainPassword

$Text1=Read-Host -AsSecureString
$Text2=Read-Host -AsSecureString    
(Decrypt-Password -secureString $text1) -eq (Decrypt-Password -secureString $text2)

This will work like expected.

You could also create a function that will directly compare two given SecureStrings, but I will leave the exact implementation up to you.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.