[ietf-dkim] New Issue: Base: Upgrade indication and protection against downgrade attacks

[Mark Delany]

On Thu, Feb 16, 2006 at 09:55:17AM -0800, Dave Crocker allegedly wrote:

> Having an agility approach that we like more than any other approach, and that 
> just happens to be robust against downgrade attack, is different than focusing 
> on the concern for downgrade attack.

Right. There are any number of reasons why we may have to change
algs. Security attacks, costs, IP claims...


Mark.