At 12:41 PM 6/19/2003 -0600, Vernon Schryver wrote:
[..]
> Also, blocking base64 encoding would block email schemes where digital
> signatures are used.
That is entirely mistaken. You might want to ensure that sender and
recipient agree on whether to sign the encoded or plaintext versions
of the message, but that's all.
In the scheme proposed by Art Pollard, a copy of the public key would be
included with the signed message. Common format for public key certificates
use base 64 encoded, outright ban of all base-64 email would be a problem
for this. The point I was trying to make is that outright ban on ALL
base-64 email is not a simple as it sounds. There are legit applications
that use it and such banning approach would have to take them into account.
Yakov
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