Re: Oh do keep up at the back
@The_Man_In_The_Pub
The other thing about Alice and Bob (and this AC too) is that it's very easy with a cheap laptop to create keys using VERY LONG decimal prime numbers.
Like:
7664543030988066974122642015407244520253936167868310570307467828388652800999204890396332543089546485573435871392285170589068971135691126541104326899286339951292600537729455451765868370293476167214503
Maybe the plod can do this sort of mathematics. Not!!!