Re: Resolving the issue of JSON and preserving order

The example in the link shows individual claims with multiple keys.  Such
claims must either be canonicalized (or wrapped in B64), in order to be
signed or hashed.

Deterministic CBOR does not require any special handling of data to be
signed.

Anders

On Sat, Sep 23, 2023, 10:10 Andy Miller <theafmiller@gmail.com> wrote:

> Since order is maintained in JSON arrays, I think this would maintain the
> order of credential subjects (ref:
> https://www.w3.org/TR/vc-data-model-2.0/#example-specifying-multiple-subjects-in-a-verifiable-credential
> ):
>
> {"credentialSubject": [
>     {"id": "id-1"},
>     {"id": "id-2"}
> ]}
>
> Andy
>
> On Sat, Sep 23, 2023 at 4:57 PM Anders Rundgren <
> anders.rundgren.net@gmail.com> wrote:
>
>> Another solution is using deterministic CBOR which seems like an
>> excellent fit for credentials and such.
>> Deterministic CBOR will most likely become and IETF standard.
>>
>> https://github.com/cyberphone/D-CBOR#example
>>
>> Anders
>>
>> On 2023-09-22 14:38, Orie Steele wrote:
>> > You can use JSON-LD language features to preserve order.
>> >
>> > If you use SD-JWT, because the JSON is signed instead of N-Quads, order
>> is preserved by the signature.
>> >
>> > OS
>> >
>> > On Fri, Sep 22, 2023, 4:57 AM ステファニー タン（SBIホールディングス） <
>> tstefan@sbigroup.co.jp <mailto:tstefan@sbigroup.co.jp>> wrote:
>> >
>> >     Hi all,
>> >
>> >     It's Stefannie again. Once again I would like to thank everyone for
>> their help so far. We would be happy to participate in the next weekly call
>> to introduce ourselves properly.
>> >
>> >     Our next question is to do with VC and establishing a certain
>> order. Inside the VC is the proof and other attributes, such as Credential
>> Subject. Since JSON is unordered or does not preserve a certain order, what
>> do you do when you want to establish a certain order for multiple
>> credential subjects while preserving extensibility?
>> >
>> >     Thank you for any advice or suggestion you might have.
>> >
>> >     Best,
>> >     Stefannie
>> >
>>
>>
>>