DiffieHellman: gracefully handle platforms that fail the sha256 self test, currently only known to be PowerPC. Added support for PHP's built-in hash functions (they were added in 5.1.2) and use them in lieu of the built-in sha256 implementation when available.

=== Sorry - this part of the tutorial isn't finished yet! ===

We're still working on this part of the tutorial. Contributions to the tutorial are always welcome.

Contributing? See [http://bugs.enanocms.org/issue/11 Enano 1.1.8 issue 11]