Re: [Cbor] Unusual map labels, dCBOR and interop

[Anders Rundgren <[e-mail]>]

On Thu, Mar 28, 2024, 08:00 Wolf McNally <[e-mail]> wrote:

> Anders,
>
> On Mar 27, 2024, at 11:23 PM, Anders Rundgren <
> [e-mail]> wrote:
>
> Wolf, we are in full agreement!  However, CSF (CBOR Signature Format) does
> pretty much the same things modulo "elision" as Gordian Envelopes, builds
> on CDE:
> https://test.webpki.org/csf-lab/home
>
>
> It is a mis-characterization of Gordian Envelope to compare it to a
> “signature format” even “modulo elision". Envelope is a hierarchical binary
> document format built on dCBOR, that in its simplest form (as described
> in the I-D) supports elision (useful enough in and of itself), and in
> that simplest form actually has no specified way of handling signatures at
> all.
>
> But Envelope also has various optional extensions (with reference
> implementations), many of which benefit from or rely on determinism, that
> support:
>
> - Full or partial signing (embedded or detached)
> - Holder-initiated elision (without invalidating signatures)
> - Arbitrarily deep metadata based on recursive semantic structures
> - Full or partial symmetric encryption (without invalidating signatures)
> - Full or partial public key encryption (without invalidating signatures)
> - Sharding using Shamir’s Secret Sharing (distributed/social backup)
> - Digest decorrelation
> - Inclusion proofs (progressive disclosure, herd privacy)
> - Sealed transaction protocols
> - Compression (without invalidating signatures)
> - Diffing and merging
>
> I suppose in a way I should thank you for your persistent
> mis-characterizations, because in doing so you give me the opportunity to
> introduce this technology to newcomers to the list.
>
> https://www.blockchaincommons.com/introduction/Envelope-Intro/
>

All of this is fine, but none of this is in conflict with CDE.

Anders

>
> ~ Wolf
>