On Mon March 30 2009, Michael S. Zick wrote:
>

Here is the reference I had in mind (third paragraph):
http://en.wikipedia.org/wiki/Battle_of_Leyte_Gulf#The_Crisis_.E2.80.93_US_Seventh_Fleet.27s_calls_for_help

So much for historical trivia on "don't invent your own protocol".

Mike
> On Mon March 30 2009, Victor Duchovni wrote:
> >
> - - - snip - - -
> > 
> > Of course to prevent HMAC replay attacks, messages should contain nonces,
> > but with protocols using shared secret HMAC signatures, the nonce is
> > considered to be part of the message rather than the signature algorithm.
> > 
> 
> That usage dates back to pre-computer days. Morse code and Teletype days.
> And yes, it was part of the message - the operator had to type it in theirself
> before entering the message (according to some simple rules).
> 
> There have been world history changing events when some yahoo of a 
> communications
> clerk failed to remove the added nonce from the message.
> 
> But that is just the point - don't try to make up your own usages.
> 
> Mike
> 
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