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Subject: Re: [xcbf] SignedData Attributes - DigitalSignature Attributes

The "format=" is not current XER.

This needs thinking through a bit more, Phil.

We certainly intend to allow BASE64 encodings, but currently the
specification that it is BASE64 will be part  of the encoding
instructions (known to both sides), and not something which is carried
in an instance of communication.

So I guess I oppose your "format=" parameter.

Why do you need to have that transmitted in the XML?

John L

Phil Griffin wrote:
> I proposed on 8/6 that the following XML markup be used
> in XCBF.
>     <version> ........................ </version>
>     <digestAlgorithms> ............... </digestAlgorithms>
>     <encapContentInfo> ............... </encapContentInfo>
>     <certificates format='base64'> ... </certificates>
>     <crls format='base64'> ........... </crls>
>     <signerInfos> .................... </signerInfos>
> The signature component of the SIGNATURE parameterized
> type identifies a value of type BIT STRING. These bits
> are not used as bit flags, and signatures tend to be in
> the thousands of bits in length and can more easily and
> compactly be represented as OCTET STRINGs. I propose that
> the following XML markup be used for these values:
>     <signature format='hex'> ... </signature>
> So far, I have received no comments. Unless I hear comments
> that use of these attributes is unacceptable, I will include
> them in the next release of the XCBF document.
> Phil
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   Prof John Larmouth
   Larmouth T&PDS Ltd
   (Training and Protocol Development Services)
   1 Blueberry Road                     
   Bowdon                               j.larmouth@salford.ac.uk
   Cheshire WA14 3LS                    Tel: +44 161 928 1605
   England				Fax: +44 161 928 8069

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