Hello Chris,
Currently no work is being done on an OS/X dashboard widget because none of the developers have OS/X! Well, to tell the truth, I do have a VMWare image of OS/X i386, but it runs much too slow on my Windows XP machine for anything other than a novelty.
We would be most grateful for an OS/X edition, especially because it has been requested by numerous people.
The hashing algorithms are available in javascript, java, C++, PHP, and C#. It's my understanding that dashboard widgets are written using HTML, Javascript, and CSS. If that's the case, it would be easiest for you to use the javascript code.
You really don't have to know anything about hashing algorithms in order to use them--they are arranged as "black box" functions... just call them with input and they return the correct output.
Please let me know how you'd like to proceed; what can we do to assist you?
Regards,
Eric