JOSE assumptions for DIDComm lib v0.1 JSON Serialization Syntax JWE - General Serialization only JWS General for JWS Signed DIDComm Messaged Flattened for jws attachment ECDH-1PU

Proposed Option Implement required JOSE parts in Python based on https://github.com/lepture/authlib The plan is to fork authlib and contribute to upstream. An issue with proposal is created: https://github.com/lepture/authlib/issues/370 If for some reasons they will not accept our contribution, we will just copy the required JOSE part into our DID Comm Python lib. This is basically Option 1 (see below) with Option 3 as a backup plan. authlib lacks only the following features that we need: ECDH-1PU key agreement scheme; XC20P encryption algorithm;

Proposed Option Implement DID Comm in Rust, and use wasm for JS (both node.js and browsers) All Options Implement DID Comm in Rust, and use wasm for JS (both node.js and browsers) Pros: Missing primitives for the browser and the NodeJs are supported;