[Mailman-Users] Preserving S/MIME-Encoded Mail
brad at shub-internet.org
Fri Jan 16 23:43:42 CET 2009
Grant Taylor wrote:
>> Don't change anything at all in any of the signed/encrypted part, just
>> treat it as an opaque object and encapsulate the whole thing.
> It sounded like that is what Mailman already did and that by doing so
> broke the signature.
I don't think it broke the signature, I think what happened is that it
hasn't been encapsulated in the correct manner.
> I will have to go back and re-read if it is
> possible to graft the existing MIME tree in to another larger MIME tree
> with out invalidating it.
At the very least, you can do a message/rfc822 bodypart, and that should
guarantee that the signature is not broken, assuming that there's no changes
in whitespace encoding, etc....
However, I don't know how most MUAs would handle that in a signed message.
A more intelligent encapsulation format should hopefully address that issue.
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