[ietf-dkim] Base issue: multiple linked signatures

[John R Levine]

> No. What you'd want to do is to rename modified header field into some
> sort of trace data and copy the original data in its place. Displaying
> modification would then be up to the MUA which could display small
> icon allowing user to see what the modification was as an option.

That's one approach, but hardly the only possible one.  Most of the users
I know would find it completely baffling if their mail program showed them
multiple versions of headers and asked whether they liked them.

> For most cases original value would be just fine ...

Can you describe the algorithm to distinguish the cases where the original
value is fine from the cases where it's not?  I hope we agree that we do
not want to spec a verification system that uses heuristics that vary from
one implementation to another.

Regards,
John Levine, johnl at iecc.com, Primary Perpetrator of "The Internet for Dummies",
Information Superhighwayman wanna-be, http://www.johnlevine.com, Mayor
"A book is a sneeze." - E.B. White, on the writing of Charlotte's Web