How do I encrypt a multi-OS bootable hard drive?

Question

Encryption

There is an MBP with a 512 GB SSD disk divided into two sections.
It has 2 systems:
1) MacOS X Yosemite
2) Windows 8 x64 Pro
At the moment BootCamp bootloader. How can you provide disk encryption so that two systems work the same way?
+ such an important point in Mac OS X should be able to read / write to the partition where Windows is located and vice versa.

Answer 1

If only via https://truecrypt.ch/ ). We encrypt both sections. And then we will mount the second section with handles.

Answer 2

It seemed to me that FileVault is just about this ... or is it not friendly with the bootcamp?