steps to authenticity
Two men have been instructed to meet for a handover at a pre-designated place at a precise time. They are to wear something that distinguishes them from the ordinary. A straw hat, a flower in the lapel. Each man knows what to look for in the other. This is the second step of identification. The third step is a scripted question / answer routine. Something banal.
‘Have you eaten an orange today?’
‘I only like apples.’
Both tests passed, both men satisfied. Information passes from one to the other folded into a newspaper or hidden between the leaves of a book.
The information reaches its destination, but before decryption begins the first step must be confirmed.
The information must have a signature.
How else could they be assured it was authentic?
Call sign Danetta.