On 2000-05-25 09:45:24 -0700, hal(_at_)finney(_dot_)org wrote:
The only keys that used right substrings would be
"legacy" DSA and ElGamal keys (assuming that no one
else has implemented RSA V4 keys, which I am not sure
about). We might do some kind of upgrade to DSA keys
when the new larger hash is announced later this year,
and they could switch at that time. Maybe some
arbitrary change could be made to ElGamal as well.
If things absolutely have to be changed in an incompatible
way, please use a different packet version (say, V5) for
this, so old software nicely breaks on it.
Everything else will lead to considerable confusion of
users and software.
--
http://www.guug.de/~roessler/