Version 0.3.3 can generate encrypted DCPs: with the keyman application you can now generate KDMs, too.
In version 0.3.2, DCP Builder will not require any registration, and it will be watermark-free.
It took longer than expected, but now you can try the new version 0.3.1, with some bug fix and EXPERIMENTAL support for cryptography. It is only available for Windows 64 bit, at the moment, and other platforms will be added periodically.
A list of pre-encoded DCPs useful for testing your server compatibility with DCP Builder packages. The DCPs are compressed in .zip format: unzip to a USB device and feed the server!