Re: message-id formatting

Florian Weimer <[email protected]> Fri, 30 Mar 2007 13:46:01 +0200

Newsgroups	gmane.comp.security.forensics
Message-ID	<[email protected]>

* Simson Garfinkel:

> Actually, message-id's frequently have internal meaning, depending on
> where they are issued. If Apple just wanted a random 128-bit number,
> they wouldn't put the dashes in it. There is internal structure --- a
> 32-bit number, three 16-bit numbers, and a 48-bit number.

That's just the format used by UUIDs.  Some ways for generating such
IDs are described in RFC 4122.