Blake Jakopovic blakejakopovic

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macOS Internals

Understand your Mac and iPhone more deeply by tracing the evolution of Mac OS X from prelease to Swift. John Siracusa delivers the details.

Starting Points

How to use this gist

You've got two main options:

This is a very basic guide, just to understand what's needed to set it up.
If you have any questions you can find me at https://nostr.com/8355095016fddbe31fcf1453b26f613553e9758cf2263e190eac8fd96a3d3de9

Prerequisite

a webserver with a domain under your control
nostr account with private and public key setup on https://nostr.com, preferably set up with nos2x: https://github.com/fiatjaf/nos2x

Setup static file on server

Create a file that resolves to <domain>/.well-known/nostr.json, and fill it out like this (enter the name you want to use, and input your own public key, make sure its the HEX-key):

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

A curated list of command-line utilities written in Rust

Note: I have moved this list to a proper repository. I'll leave this gist up, but it won't be updated. To submit an idea, open a PR on the repo.

Note that I have not tried all of these personally, and cannot and do not vouch for all of the tools listed here. In most cases, the descriptions here are copied directly from their code repos. Some may have been abandoned. Investigate before installing/using.

The ones I use regularly include: bat, dust, fd, fend, hyperfine, miniserve, ripgrep, just, cargo-audit and cargo-wipe.

atuin: "Magical shell history"
bandwhich: Terminal bandwidth utilization tool

Reusable taproot addresses

Abstract

This document proposes a new scheme to avoid address reuse while retaining some of the convenience of address reuse, keeping recoverability purely from Bitcoin time chain and avoiding visible fingerprint. The scheme has negligible average overhead.

	-- The goal of this script is to trim messages that have been processed by
	-- all extant groups from the a given Redis stream. It returns the number
	-- of messages that were deleted from the stream, if any. I make no
	-- guarantees about its performance, particularly if the stream is large
	-- and not fully processed (so a simple XTRIM isn't possible).

	-- First off, bail out early if the stream doesn't exist.
	if redis.call("EXISTS", KEYS[1]) == 0 then
	return false
	end

	// Uses hypercore-next and hyperswarm V4

	// Server

	const Hyperswarm = require('hyperswarm')
	const Hypercore = require("hypercore")
	const Hyperbee = require("hyperbee")
	const ram = require("random-access-memory")

	async function runServer(){

	#!/bin/bash

	add_user() {
	getent passwd "$1" >>"$BUILDROOT/etc/passwd"
	getent shadow "$1" >>"$BUILDROOT/etc/shadow"
	getent group "$(id -Gn "$1")" >>"$BUILDROOT/etc/group"
	}

	build() {
	add_systemd_unit cryptsetup-pre.target

	// Interactive sign-ins only
	SigninLogs
	\| where AuthenticationProcessingDetails has "Legacy TLS"
	and AuthenticationProcessingDetails has "True"
	\| extend JsonAuthProcDetails = parse_json(AuthenticationProcessingDetails)
	\| mv-apply JsonAuthProcDetails on (
	where JsonAuthProcDetails.key startswith "Legacy TLS"
	\| project HasLegacyTls=JsonAuthProcDetails.value
	)
	\| where HasLegacyTls == true