function Get-DecryptedCpassword { [CmdletBinding()] Param ( [string] $Cpassword ) try { #Append appropriate padding based on string length $Mod = ($Cpassword.length % 4) switch ($Mod) { '1' {$Cpassword = $Cpassword.Substring(0,$Cpassword.Length -1)} '2' {$Cpassword += ('=' * (4 - $Mod))} '3' {$Cpassword += ('=' * (4 - $Mod))} } $Base64Decoded = [Convert]::FromBase64String($Cpassword) #Create a new AES .NET Crypto Object $AesObject = New-Object System.Security.Cryptography.AesCryptoServiceProvider [Byte[]] $AesKey = @(0x4e,0x99,0x06,0xe8,0xfc,0xb6,0x6c,0xc9,0xfa,0xf4,0x93,0x10,0x62,0x0f,0xfe,0xe8, 0xf4,0x96,0xe8,0x06,0xcc,0x05,0x79,0x90,0x20,0x9b,0x09,0xa4,0x33,0xb6,0x6c,0x1b) #Set IV to all nulls to prevent dynamic generation of IV value $AesIV = New-Object Byte[]($AesObject.IV.Length) $AesObject.IV = $AesIV $AesObject.Key = $AesKey $DecryptorObject = $AesObject.CreateDecryptor() [Byte[]] $OutBlock = $DecryptorObject.TransformFinalBlock($Base64Decoded, 0, $Base64Decoded.length) Write-Host $OutBlock # <----- Only had to add this line return [System.Text.UnicodeEncoding]::Unicode.GetString($OutBlock) } catch {Write-Error $Error[0]} }