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| param ( | |
| [string]$cpassword | |
| ) | |
| 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) | |
| $AesObject = New-Object System.Security.Cryptography.AesCryptoServiceProvider | |
| # Public available AES key on https://msdn.microsoft.com/en-us/library/2c15cbf0-f086-4c74-8b70-1f2fa45dd4be.aspx?f=255&MSPPError=-2147217396 | |
| [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) | |
| $AesIV = New-Object Byte[]($AesObject.IV.Length) | |
| $AesObject.IV = $AesIV | |
| $AesObject.Key = $AesKey | |
| $DecryptorObject = $AesObject.CreateDecryptor() | |
| [Byte[]] $OutBlock = $DecryptorObject.TransformFinalBlock($Base64Decoded, 0, $Base64Decoded.length) | |
| return [System.Text.UnicodeEncoding]::Unicode.GetString($OutBlock) | |
| } | |
| catch { | |
| Write-Error $Error[0] | |
| } | |
| } | |
| $decriptedpassword = Get-DecryptedCpassword $cpassword | |
| write-host $decriptedpassword |
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