private void DecryptFile(Stream encryptedFile, Stream decryptedFile)
{
CryptUtility cu = new CryptUtility();
cu.DecryptFile(decryptedFile, encryptedFile, getDecryptionKey());
}
private String createChecksum()
{
CryptUtility cu = new CryptUtility();
return(cu.pbkdf2(pkgInfo.KeyCode, pkgInfo.PackageCode, 1024));
}