Hello Adam,
On 2011/10/25 11:21, Adam Barth wrote:
http://trac.tools.ietf.org/wg/websec/trac/ticket/17 refers to an IANA
registry with magic numbers for various media types. I wanted to
compare them to what's in the draft, but I couldn't find it. I found
the media type registry, e.g., for images:
http://www.iana.org/assignments/media-types/image/index.html
but I don't see any magic numbers. Would someone be willing to point
me in the right direction?
They are in the templates. To get the template for a registration, start
at the overview page
(http://www.iana.org/assignments/media-types/index.html).
Then go to the page that lists all the registration for a give top
level, e.g. http://www.iana.org/assignments/media-types/image/index.html
for images.
Then look at each registration template (click on the link in the left
column, or in the right column if the left one doesn't have a link and
the right one is to an RFC). You may then find a magic number in the
registration template. As an example, for image/jp2, the template is at
http://www.iana.org/assignments/media-types/image/jp2.
But it looks like earlier templates didn't have a field for a magic
number, and this and the reasons Anne gave make this information helpful
for cross-checking, but not much more.
Regards, Martin.
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