Nth digit of PI

[hack]

In article <394A5795.F4DE98FB at san.rr.com>,
Courageous  <jkraska1 at san.rr.com> wrote:
>
>> Suppose, however, that you could get digit 'n' of pi directly (or e,
>> or any other inifinte, nonrepeating sequence).  All I have to do is
>> communicate which digit of pi the message key starts at, and I can
>> generate the rest of the key.
>
>This is a collosally bad idea, IMO.
>
>C/
 
It works fine if the number of bits in 'n' is large enough, e.g. 16K bits.
Your key would then be the 16K bits of pi starting around bit 10^5000 (to
encode a message of 16K bits).  Of course, you haven't gained much:  you
might as well use 'n' itself!

Michel.