Enzo Michelangeli wrote: >And to Werner: public/private keys affect long term security (and for a ve= ry >large number of messages). There was a time when exceeding the following >limits may have looked "plain stupid": > >- 32 bits for IP addresses >- 31 bits for time_t values >- 2 decimal digits for year part of the date >- 640 Kb for the addressing space of a PC - 512 bits for Phil Zimmermann's old key