[Cbor] Having fun with Deterministic CBOR

Anders Rundgren <anders.rundgren.net@gmail.com> Mon, 09 September 2024 16:50 UTC

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Date: Mon, 09 Sep 2024 18:50:28 +0200
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From: Anders Rundgren <anders.rundgren.net@gmail.com>
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Subject: [Cbor] Having fun with Deterministic CBOR
Archived-At: <https://mailarchive.ietf.org/arch/msg/cbor/brDD5eDNaF2bTWeIhWJRgpBt7nA>

Hello CBOR enthusiasts,

Here is my take on the EU Identity Wallet for payments:
https://cyberphone.github.io/wallet-core/doc/#3.3.authorization-response

You may frown at the idea of cutting and pasting CBOR map items. However, in real-world implementations using high-level representations of CBOR data items, both operations require a single method call, no need to ever bother about map item-count etc.

Cutting:
signedAuthorization.remove(PASS_THROUGH_LABEL);

Pasting:
recoveredAuthorization.set(PASS_THROUGH_LABEL, recoveredPassThrough);

AFAICT, deterministically encoded CBOR may become a game changer.

Feel free recasting the Authorization Response in COSE.

Anders

[Cbor] Having fun with Deterministic CBOR Anders Rundgren