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silverpill (silverpill@mitra.social)'s status on Monday, 25-Mar-2024 22:59:27 JST silverpill
in reply to
@laurin @smallcircles @steve @helge @fentiger JCS is easier to implement. Compare the specs:
- https://datatracker.ietf.org/doc/rfc8785/
- https://www.w3.org/TR/rdf-canon/
RDFC recommendation would create a significant barrier to entry for developers who prefer non-mainstream programming languages.
In conversation about 8 months ago from mitra.social permalink
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  RFC 8785: JSON Canonicalization Scheme (JCS)
  
  from Samuel Erdtman
  
  Cryptographic operations like hashing and signing need the data to be expressed in an invariant format so that the operations are reliably repeatable. One way to address this is to create a canonical representation of the data. Canonicalization also permits data to be exchanged in its original form on the "wire" while cryptographic operations performed on the canonicalized counterpart of the data in the producer and consumer endpoints generate consistent results. This document describes the JSON Canonicalization Scheme (JCS). This specification defines how to create a canonical representation of JSON data by building on the strict serialization methods for JSON primitives defined by ECMAScript, constraining JSON data to the Internet JSON (I-JSON) subset, and by using deterministic property sorting.
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- Laurin (laurin@mastodon.online)'s status on Monday, 25-Mar-2024 22:59:28 JST Laurin
  @steve @helge @fentiger @smallcircles
  Why is the client-side signing FEP (https://codeberg.org/fediverse/fep/src/branch/main/fep/ae97/fep-ae97.md) using the jcs and not the rdfc crypto suite (https://www.w3.org/TR/vc-di-eddsa/#eddsa-rdfc-2022)?
  This would solve the whole problem I suppose, since it will convert the activity to rdf, to sign.
  @silverpill
  In conversation about 8 months ago permalink
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  1. fep
    
    from fediverse
    
    Fediverse Enhancement Proposals
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    Data Integrity EdDSA Cryptosuites v1.0
    
    This specification describes a Data Integrity cryptographic suite for use when creating or verifying a digital signature using the twisted Edwards Curve Digital Signature Algorithm (EdDSA) and Curve25519 (ed25519).

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