On Wed, 20 Dec 2006 15:23:32 -0000, Mark Delany <[EMAIL PROTECTED]>
wrote:
Charles Lindsey wrote:
Anyway, here is some wording:
The "simple" body canonicalization removes empty lines from the end
of the
body until either the last line is non-empty, or no lines remain. An
empty
line is a line of zero length after removal of any terminating CRLF.
If
the body is not now empty and the last line is not already
terminated by
CRLF, a CRLF is added to it.
INFORMATIVE NOTE: Following [RFC 2822}, the CRLF which separates
the
header fields from the body is NOT part of the body, and
therefore is
never presented to the signing or verification algorithm.
I think I agree with the effect, but I wish I could offer something
terser, but that seems hard since this is dealing with the interaction
of potentially different header canon and body canon.
Does the INFORMATIVE NOTE imply that the following two emails
canonicalize to the same thing?
---------------
Last-Header: blahCRLF
CRLF
lineOne: blah1CRLF
lineTwo: blah2CRLF
---------------
---------------
Last-Header: blahCRLF
lineOne: blah1CRLF
lineTwo: blah2CRLF
---------------
Certainly not! Why should they?
The first is a message with one header and a body of two lines. The header
canonicalizes into itself, and the body canonicalizes into
---------------
lineOne: blah1CRLF
lineTwo: blah2CRLF
---------------
The second is a message with three headers and no body at all. The headers
canonicalize as themselves, and for the body you treat it as empty:
---------------
---------------
One could add text to say that an absent body is equivalent to an empty
body, if you think that is necessary.
--
Charles H. Lindsey ---------At Home, doing my own thing------------------------
Tel: +44 161 436 6131
Web: http://www.cs.man.ac.uk/~chl
Email:[EMAIL PROTECTED]: 5 Clerewood Ave, CHEADLE, SK8 3JU, U.K.
PGP: 2C15F1A9 Fingerprint: 73 6D C2 51 93 A0 01 E7 65 E8 64 7E 14 A4 AB A5
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