Fixed mangled decrypted script output

Addresses issue #80. This was a tricky fix because the script should
ideally handle Unicode and Ascii encoded scripts. I haven't tested
scripts with international characters but I would imagine those script
would get mangled since the decrypted output is ultimately normalized to
ascii.

1 files changed, 3 insertions, 2 deletions

diff --git a/ScriptModification/Out-EncryptedScript.ps1 b/ScriptModification/Out-EncryptedScript.ps1
index 1764d17..eba48f7 100644
--- a/ScriptModification/Out-EncryptedScript.ps1
+++ b/ScriptModification/Out-EncryptedScript.ps1
@@ -90,7 +90,7 @@ This command can be used to encrypt any text-based file/script
     $AsciiEncoder = New-Object System.Text.ASCIIEncoding

     $ivBytes = $AsciiEncoder.GetBytes($InitializationVector)

     # While this can be used to encrypt any file, it's primarily designed to encrypt itself.

-    [Byte[]] $scriptBytes = [Text.Encoding]::ASCII.GetBytes((Get-Content -Encoding Ascii -Path $ScriptPath))

+    [Byte[]] $scriptBytes = Get-Content -Encoding Byte -ReadCount 0 -Path $ScriptPath

     $DerivedPass = New-Object System.Security.Cryptography.PasswordDeriveBytes($Password, $AsciiEncoder.GetBytes($Salt), "SHA1", 2)

     $Key = New-Object System.Security.Cryptography.TripleDESCryptoServiceProvider

     $Key.Mode = [System.Security.Cryptography.CipherMode]::CBC

@@ -126,7 +126,8 @@ function de([String] `$b, [String] `$c)
 `$i.Close();

 `$j.Close();

 `$f.Clear();

-return `$encoding.GetString(`$h,0,`$h.Length);

+if ((`$h.Length -gt 3) -and (`$h[0] -eq 0xEF) -and (`$h[1] -eq 0xBB) -and (`$h[2] -eq 0xBF)) { `$h = `$h[3..(`$h.Length-1)]; }

+return `$encoding.GetString(`$h).TrimEnd([Char] 0);

 }

 "@