[security] security hole in signature algorithm

Josh Hoyt josh at janrain.com
Mon Nov 20 18:37:48 UTC 2006


On 11/19/06, Dick Hardt <dick at sxip.com> wrote:
> I don't see the newline and colon in this description. Is it hidden
> somewhere else in the spec?

I'm not sure I'd call it hidden. Under section 7 (Signatures)
(this is draft 10 text)

http://openid.net/specs/openid-authentication-2_0-10.html#anchor12

----

7.2.  Procedure

To generate a message signature:

   1. Determine the appropriate signature list and signature algorithm
from the association type (Establishing Associations).
   2. Generate the list to be signed using the correct list algorithm.
   3. Convert the list to an octet string by encoding with Key Value
Form (Key-Value Form Encoding)
   4. Apply the correct signature algorithm to the octet string.

----

Josh



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