bitXor 8 bytes of data

[Alex Tweedly]

Neil Allan wrote:
> After some deep thought today, I achieved my desired goal by xoring 
> each individual byte. I could swear I tried this before, but anyhoo 
> it's working now!
Sometimes it's not enough to try something ..... you need to tell 
someone else that it still fails, and only then will it start working 
again :-)

At least once a month, I start writing an email to the use-list 
explaining a problem (or sometimes just ranting about it :-), and by the 
time I have finished writing the email, including the "one last try" to 
copy/paste the failing code, the problem has mysteriously disappeared.

-- Alex.