I see Victor just beat me to it. But the penny has just dropped about Diffie-Hellman and "man-in-the-middle" --- Alice and Bob must acknowledge receipt by telephone, otherwise the post office might impersonate each to the other and nab the goodies after all! WFL On 5/9/16, Fred Lunnon <fred.lunnon@gmail.com> wrote:
He sends her box and ring, locked with his padlock.
She returns it, double-locked with her padlock.
He unlocks his padlock and resends.
She unlocks her padlock.
Thinks "just as well this wasn't fresh caviar!"
WFL
On 5/9/16, Dave Dyer <ddyer@real-me.net> wrote:
At 10:49 AM 5/9/2016, Brent Meeker wrote:
Send the key first. Only send the box after the key arrives.
No, send the box first. If an anonymous locked box won't get through, the whole exercise is pointless. Any attempt to send the key first might alert the authorities to watch for the box. Once the box is safely transferred, as many attempts as necessary can be made to send a key for the box, which is already secure.
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