Using Programming Languages other than VBA

Sub Example_Action()
	' This example encrypts and saves a file.

	Dim acad As New AcadApplication
	Dim sp As New AcadSecurityParams

	acad.Visible = True
	sp.Action = AcadSecurityParamsType.ACADSECURITYPARAMS_ENCRYPT_DATA
	sp.Algorithm = AcadSecurityParamsConstants.ACADSECURITYPARAMS_ALGID_RC4
	sp.KeyLength = 40
	sp.Password = UCase("mypassword") 'AutoCAD converts all passwords to uppercase before applying them
	sp.ProviderName = "Microsoft Base Cryptographic Provider v1.0"
	sp.ProviderType = 1

	acad.ActiveDocument.SaveAs "C:\MyDrawing.dwg", , sp

End Sub