AES. Encrypt array of bytes in powershell [closed] - algorithm

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Closed 10 years ago.
I am need to encrypt array of bytes([byte[]]) in powershell script using AES cryptography method. I am find function that encode string:
[Reflection.Assembly]::LoadWithPartialName("System.Security")
function Encrypt-String($String, $Passphrase, $salt="My Voice is my P455W0RD!", $init="Yet another key", [switch]$arrayOutput)
{
$r = new-Object System.Security.Cryptography.RijndaelManaged
$pass = [Text.Encoding]::UTF8.GetBytes($Passphrase)
$salt = [Text.Encoding]::UTF8.GetBytes($salt)
$r.Key = (new-Object Security.Cryptography.PasswordDeriveBytes $pass, $salt, "SHA1", 5).GetBytes(32) #256/8
$r.IV = (new-Object Security.Cryptography.SHA1Managed).ComputeHash( [Text.Encoding]::UTF8.GetBytes($init) )[0..15]
$c = $r.CreateEncryptor()
$ms = new-Object IO.MemoryStream
$cs = new-Object Security.Cryptography.CryptoStream $ms,$c,"Write"
$sw = new-Object IO.StreamWriter $cs
$sw.Write($String)
$sw.Close()
$cs.Close()
$ms.Close()
$r.Clear()
[byte[]]$result = $ms.ToArray()
if($arrayOutput) {
return $result
} else {
return [Convert]::ToBase64String($result)
}
}
Read code with comments at http://gallery.technet.microsoft.com/scriptcenter/PowerShell-Script-410ef9df
Help change the function so that it encode array of bytes and not a string
Ssory for my english. Hello from Russia :)

Answer 1

I am do that i am need. New code:
[Reflection.Assembly]::LoadWithPartialName("System.Security")
$String=$buff #ARRAY OF BYTES TO ENCODE
$Passphrase="Pas"
$salt="My Voice is my P455W0RD!"
$init="Yet another key"
$r = new-Object System.Security.Cryptography.AesManaged
$pass = [Text.Encoding]::UTF8.GetBytes($Passphrase)
$salt = [Text.Encoding]::UTF8.GetBytes($salt)
$r.Key = (new-Object Security.Cryptography.PasswordDeriveBytes $pass, $salt, "SHA1", 5).GetBytes(32) #256/8
$r.IV = (new-Object Security.Cryptography.SHA1Managed).ComputeHash( [Text.Encoding]::UTF8.GetBytes($init) )[0..15]
$r.Padding="Zeros"
$c = $r.CreateEncryptor()
$ms = new-Object IO.MemoryStream
$cs = new-Object Security.Cryptography.CryptoStream $ms,$c,"Write"
$cs.Write($String, 0,$String.Length)
$cs.Close()
$ms.Close()
$r.Clear()
[byte[]]$Encrypted = $ms.ToArray()