You then have to pass the secure string and user name to the ’s PSCredential method. To do this you’ll have to create a secure string, which contains the password. Most automation tools such as Jenkins, TeamCity, and Octopus Deploy require a non-interactive method. Sometimes, you won’t want an interactive method of creating credential objects as I just demonstrated. $Cred = Get-Credential -UserName domain\user -Message 'Enter Password' $Cred = Get-Credential -Credential domain\user In the example below, I’m storing each credential object to a variable called $Cred. ![]() You can also store the credential object in a variable, which allows you to use the credential several times. The code below demonstrates using the cmdlet. The only difference I’ve noticed is when you use -UserName you’ll also be required to input a message value. To specify the domain name and username ahead of time you can use either the -Credential or -UserName parameters. From there you could enter the domainName\userName or you can call the cmdlet with some optional parameters. You can simply execute Get-Credential, which will result in a username and password prompt. The first and easiest method is by using the PowerShell cmdlet Get-Credential. There are a few ways that you can generate a credential object. MSDN The objects are then passed to the parameter of a function and used to execute the function as that user account in the credential object. PSCredential objects represent a set of security credentials, such as a user name and password. I also discuss how to get around common issues when working with legacy cmdlets that don’t support a credential object, but before we get started let’s first talk about PSCredential objects and how to generate them. This blog post walks you through the process of adding such functionality to your PowerShell functions. Assuming your normal account running the PowerShell session doesn’t have that access already. The most common use is to run the function or cmdlet as an elevated user account.įor example, the cmdlet New-ADUser has a -Credential parameter, which you could provide domain admin credentials in order to create an account in a domain. The purpose of the credential parameter is to allow you to run the function and/or cmdlet as a different user, some account other than the one currently running the PowerShell session. But before I do that let’s first talk about why you’d want to add a credential parameter to your functions. The script prompts the user for their credentials the first time they call it but uses the cached credentials for subsequent calls.įor more information about the GetCredential cmdlet, type GetHelp GetCredential.In this blog post, I’ll show you how to add credential parameters to PowerShell functions. $credential = $null if(TestPath Variable:\) Caching credentials in memory to improve usability For example, in the region of the script that calls the GetCredential cmdlet, you can instead use the techniques shown by Example 163.Įxample 163. If a frequently run script requires credentials, you might consider caching those credentials in memory to improve the usability of that script. For more information about the security implications of storing sensitive information in The NetworkCredential class is less secure than the PsCredential class because it stores the user’s password in plain text. NET Framework support the NetworkCredential class directly. ![]() Once you've converted the credential to a NetworkCredential, the UserName and Password properties provide unencrypted access to the username and password from the original credential. If you need to provide a credential to one of these commands or API calls, the PsCredential object provides a GetNetworkCredential() method to convert the PowerShell credential to a less secure NetworkCredential object. Unfortunately, not everything that requires credentials can accept either a PowerShell credential or SecureString. If a command doesn’t accept a PowerShell credential object (but does support a SecureString for its sensitive information), the resulting PsCredential object provides a Username property that returns the username in the credential and a Password property that returns a SecureString containing the user’s password. Once you have the username and password, you can pass that information around to any other command that accepts a PowerShell credential object without worrying about disclosing sensitive information. The GetCredential cmdlet reads credentials from the user as securely as possible and ensures that the user’s password remains highly protected the entire time. To request a credential from the user, use the GetCredential cmdlet: $credential = GetCredential ![]() Your script requires that users provide it with a username and password, but you want to do this as securely as possible.
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