Generating Random password for user accounts in AD

[aman Participant Topics: 10 Replies: 11 Points: 145Rank: Participant]

Hi Everyone,

I am trying to generate a random password for user accounts in AD, Is there a way I can eliminate generating non alphanumeric characters?

 

Function GenerateNewPassword{
[System.Web.Security.Membership]::GeneratePassword(8,0)
$PasswordLenth = ‘8’
$NonAlphaNumeric = ‘0’
$SecurePassword = [System.Web.Security.Membership]::GeneratePassword($PasswordLenth,$NonAlphaNumeric)

}
GenerateNewPassword

[Sam Boutros Participant Topics: 12 Replies: 547 Points: 1,345Rank: Community Hero]

PowerShell

install-module azsbtools

1	install-module azsbtools

PowerShell

help New-Password -Full NAME New-Password SYNOPSIS Function to generate random password SYNTAX New-Password [[-Length] <Int32>] [[-Include] <String[]>] [-CodeFriendly] [<CommonParameters>] DESCRIPTION Function to generate random password PARAMETERS -Length <Int32> Number between 2 and 256 Default is 24 Required? false Position? 1 Default value 24 Accept pipeline input? false Accept wildcard characters? false -Include <String[]> One or more of the following: UpperCase LowerCase Numbers SpecialCharacters Default is all 4 Required? false Position? 2 Default value @('UpperCase','LowerCase','Numbers','SpecialCharacters') Accept pipeline input? false Accept wildcard characters? false -CodeFriendly [<SwitchParameter>] When set to True, this function excludes the following 4 characters from the 'SpecialCharacters' list of the password " ==> ASCII 34 $ ==> ASCII 36 ' ==> ASCII 39 ` ==> ASCII 96 Required? false Position? named Default value False Accept pipeline input? false Accept wildcard characters? false <CommonParameters> This cmdlet supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction, WarningVariable, OutBuffer, PipelineVariable, and OutVariable. For more information, see about_CommonParameters (https:/go.microsoft.com/fwlink/?LinkID=113216). INPUTS OUTPUTS NOTES Function by Sam Boutros v0.1 - 27 July 2017 v0.2 - 3 May 2020 - included in AZSBTools PS module v0.3 - 19 October 2020 - Added Switch to remove 4 code unfriendly characters -------------------------- EXAMPLE 1 -------------------------- PS C:\>New-Password -------------------------- EXAMPLE 2 -------------------------- PS C:\>New-Password -Length 10 -Include LowerCase,UpperCase,Numbers -Verbose RELATED LINKS https://superwidgets.wordpress.com/category/powershell/

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help New-Password -Full   NAME     New-Password      SYNOPSIS     Function to generate random password           SYNTAX     New-Password [[-Length] <Int32>] [[-Include] <String[]>] [-CodeFriendly] [<CommonParameters>]           DESCRIPTION     Function to generate random password        PARAMETERS     -Length <Int32>         Number between 2 and 256         Default is 24                  Required?                    false         Position?                    1         Default value                24         Accept pipeline input?       false         Accept wildcard characters?  false              -Include <String[]>         One or more of the following:           UpperCase           LowerCase           Numbers           SpecialCharacters         Default is all 4                  Required?                    false         Position?                    2         Default value                @('UpperCase','LowerCase','Numbers','SpecialCharacters')         Accept pipeline input?       false         Accept wildcard characters?  false              -CodeFriendly [<SwitchParameter>]         When set to True, this function excludes the following 4 characters from the 'SpecialCharacters' list of the password         "             ==> ASCII 34         $             ==> ASCII 36         '             ==> ASCII 39         `             ==> ASCII 96                  Required?                    false         Position?                    named         Default value                False         Accept pipeline input?       false         Accept wildcard characters?  false              <CommonParameters>         This cmdlet supports the common parameters: Verbose, Debug,         ErrorAction, ErrorVariable, WarningAction, WarningVariable,         OutBuffer, PipelineVariable, and OutVariable. For more information, see         about_CommonParameters (https:/go.microsoft.com/fwlink/?LinkID=113216).      INPUTS      OUTPUTS      NOTES                   Function by Sam Boutros         v0.1 - 27 July 2017         v0.2 - 3 May 2020 - included in AZSBTools PS module         v0.3 - 19 October 2020 - Added Switch to remove 4 code unfriendly characters          -------------------------- EXAMPLE 1 --------------------------          PS C:\>New-Password              -------------------------- EXAMPLE 2 --------------------------          PS C:\>New-Password -Length 10 -Include LowerCase,UpperCase,Numbers -Verbose      RELATED LINKS     https://superwidgets.wordpress.com/category/powershell/

PowerShell

New-Password -Length 8 -Include Numbers,UpperCase,LowerCase whi7X4dT

1 2	New-Password -Length 8 -Include Numbers,UpperCase,LowerCase whi7X4dT

[TonyD Participant Topics: 10 Replies: 203 Points: 996Rank: Major Contributor]

What I fail to understand is why the GeneratePassword method completely ignores the Non Alpha setting. If I say 0, then by god I want 0. 🙂

There are some simple solutions here. I like the 3 line regex solution.

https://stackoverflow.com/questions/2625150/membership-generate-password-alphanumeric-only-password

 

[aman Participant Topics: 10 Replies: 11 Points: 145Rank: Participant]

Thank You Everyone, all these solutions worked great for me.

[AdminOfThings45 Participant Topics: 1 Replies: 96 Points: 441Rank: Contributor]

If you don’t know all the ASCII code ranges and don’t have PowerShell v6+, you can opt for an all inclusive ASCII range and use regex matching to filter it down. Then pipe to Get-Random for your length:

PowerShell

-join ([char[]](0..128) -match '\p{L}|\p{N}' | Get-Random -Count 8)

1	-join ([char[]](0..128) -match '\p{L}|\p{N}' | Get-Random -Count 8)

The \p{unicodeProperty} syntax matches on unicode properties. L is letter and N is number.

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