Multiple symetric cyphers

[Eric Hughes]

   From: cactus at seabsd.hks.net (L. Todd Masco)


   I'm wondering: would the strength be increased by using a randomly selected
   symetric cypher? 

Strength is not right aspect.  Global risk is reduced, simply because
the aggregate cost of a breach is reduced.

But selecting a single cipher is just as much a fixed policy as a
randomly selected one is.  Far better to let the user pick a policy,
both about sent and accepted ciphers.

   I guess this reduces to: do strong cyphers have "signatures" of some sort,
   by which the type of encryption can be derived? 

If they do, they're likely not _strong_ ciphers.

Eric