Vishal vishalxl

A Social 2-of-3 MPC Wallet with Passkey-PRF–Derived User Shares

Type: construction + security analysis (design draft / paper skeleton) Status: working draft Anchor related work: A. P. Sarr, Cryptanalysis and Improvement of Smart-ID's Clone Detection Mechanism — used as the motivating foil (password/PIN-camouflaged shares are insecure).

Notation. I_P is the passkey share's signing identifier. seed is a high-entropy value; f_seed(·) is the deterministic refresh polynomial derived

Delete All Nostr Notes

This sends a delete request to all relays that have your data. This is a best effort and will likely not work well enough to actually delete everything, or possibly anything. A lot of relays do not respect delete requests.

First download a list of relays:

curl -o relays.json https://api.nostr.watch/v1/online

These are the steps I took to install and run a nostr relay on a new server.

First, you'll need the server, this tutorial is using the most basic server Hetzner provides (CX11 - €4.15/mo), you don't need much. If you don't know where to get your server from and decide to go with Hetzner, consider using my affiliate link: https://hetzner.cloud/?ref=4FZql6rUwaeQ

Once you have your server running, log into it via SSH. I'm on a MacOS, so I'll use Terminal as my command line tool. open a new Terminal window and paste the following commands:

Read Events On Command Line

Print all events:

This would print the latest 100 events:

echo '["REQ", "a", {"limit": 100} ]' | websocat wss://nostr-pub.wellorder.net

Pretty print all events

Blind Diffie-Hellman Key Exchange (blind ecash)

The goal of this protocol is for Bob to get Alice to perform a Diffie-Hellman key exchange blindly, such that when the unblinded value is returned, Alice recognizes it as her own, but can’t distinguish it from others (i.e. similar to a blind signature).

Alice:
A = a*G
return A

Bob:
Y = hash_to_curve(secret_message)
r = random blinding factor

Source : https://github.com/shiena/ansicolor/blob/master/README.md

ansicolor

Ansicolor library provides color console in Windows as ANSICON for Golang.

	const WebSocket = require('ws');
	const bitcoin = require('bitcoinjs-lib');
	const fetch = require('node-fetch');
	const base64 = require('base64-js');

	const relays = [
	'wss://nostr.wine',
	'wss://nos.lol',
	'wss://nostr.fmt.wiz.biz',
	'wss://nostr.zebedee.cloud',

	/* Cloudflare Worker Script */

	import NostrEmitter from './emitter.js'

	const delay = (ms = 1000) => new Promise((r, _) => setTimeout(r, ms))

	export default {
	async fetch(request) {
	let cache
	const emitter = new NostrEmitter()

	[
	"ed1d0e1f743a7d19aa2dfb0162df73bacdbc699f67cc55bb91a98c35f7deac69",
	"fd3fdb0d0d8d6f9a7667b53211de8ae3c5246b79bdaf64ebac849d5148b5615f",
	"e668a111aa647e63ef587c17fb0e2513d5c2859cd8d389563c7640ffea1fc216",
	"1bbb8324577ac089607e45813bac499ebdab4621d029f8c02b2c82b4410fd3f4",
	"51535ad9f0e13a810f73ea8829a79b3733bd1fffb767c4885990b02f59103a13",
	"2508ed2c2ab3f6728a880fafbc0895a2afeacbb74eb69847255fb60564af0d85",
	"3707f1efc7515524dce41d3bf50bfd9fdaed3494620b5f94fcf16d2766da4ec2",
	"dbab9040bc1f0c436b0f92f517702498358edc1fde2c7884d0e1036c739d44f3",
	"ad5aab5be883a571ea37b231cd996d37522e77d0f121cedfd6787b91d848268e",

	import 'dart:async';
	import 'dart:convert';
	import 'dart:io' as io;

	/// Reads a single line from [stdin] asynchronously.
	Future<String> readLine() async {
	final c = Completer<String>(); // completer
	final l = io.stdin // stdin
	.transform(utf8.decoder) // decode
	.transform(const LineSplitter()) // split line