sk*, just because source code is visible does not necessarily mean that the encryption is flawed. The source code for the most successful encryption app of all time, PGP, used to be published. It was available for anyone to look at. Now that they've sold out to a commercial endeavor, word has it that there is now a back door built in. Of course, the source code is now unavailable for the commericial product. But my point is, modern encryption work off mathematical algorithms that do not rely upon the source code being compiled. In other words, its strength lies in its mathematics, not its "code".