Hi, [EMAIL PROTECTED] wrote on 04.01.2008 21:47:52:
> On Fri, 4 Jan 2008, [EMAIL PROTECTED] wrote: > > Is the hash (DKIM header) which is shown in the Mailheader of an > > outgoing mail created from the whole message (header _and_ body)? It is > > not clear enough for me, because the header is changing on its way to > > the receipient. On the other hand, it must be the whole message, because > > of the "relaxed" (changes allowed via transfer) and "simple" (changes > > not allowed via transfer) flags? > > The process is described in detail in section 5 of RFC4871, but I can > summarize it for you. > > Two hashes are generated when signing. One is the hash of the body, which > is eventually stored in the signature header as the value of the "bh" tag. > Then the headers to be signed are assembled and canonicalized, including > the DKIM-Signature: header you want to add but without the value of "p=" > (the actual signature). Those headers are then hashed, and that hash is > signed using the private key. The signature thus generated is added as > the "p=" value to the header just before it is sent. > > In this way, if you have a number of copies of a message to send and want > to change the To: header (for example), you only need to compute the body > hash once, and you just recompute the header hash and signature for each > message. > > > The other question, is there another mailinglist just about DKIM > > (because my question is just DKIM relevant). > > I don't know of a list for general DKIM Q&A, and one isn't shown at > www.dkim.org either. You can ask your question here if you like. thanks a lot for your summarize. Now i got it. Axel ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ dkim-milter-discuss mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dkim-milter-discuss
