tcely

The Root Cause: Why Discord's Web Passkey Login is Broken

When Discord developed its web authentication framework, it retrofitted WebAuthn (Passkey) features into its pre-existing, rigid Multi-Factor Authentication (MFA) system. True passwordless passkeys rely on a mechanism called Discoverable Credentials (Resident Keys), where the credential itself holds user identity information.

Discord’s website fails to request discoverable credentials when saving a key. Instead, it generates a traditional, non-discoverable MFA Security Key payload. When you attempt a passwordless login via the direct "Sign in with Passkey instead" button, the website looks for a passwordless file that was never created, completely bricking the native browser authentication flow on mobile and desktop platforms alike.

Discord does not recognize FIDO2 security keys as "passkeys" and uses a distinct login flow. While passkeys offer passwordless authentication, Discord requires users to first enter their credentials before using FID

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Ventoy VHD Boot Configuration & Backup Management

This document covers environment setup, BCD registration, and dual-stage backup management.

0. Phase 1: Environment Setup & VHD Preparation

Run these commands in an Administrator Command Prompt. This initializes the folders, creates the VHD, and ensures a clean dismount before the initial backup.

:: 1. Initialize folders and create the 1GiB Fixed VHD
powershell -ExecutionPolicy Bypass -File "C:\ventoy\scripts\setup-directories.ps1"

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# Standard library imports
import hashlib
import platform
import re
import shutil
import sys
import tempfile
import time
from datetime import datetime
from email.utils import parsedate_to_datetime

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// pull_digests.ts
/*
 * $ version='2.6.5'
 * $ deno run \
 *     --allow-net=api.github.com,github.com,release-assets.githubusercontent.com \
 *     --allow-write=release_digests.sha256 \
 *     pull_digests.ts "v${version}"
 * $ file="$(deno eval 'console.log("deno-" + Deno.build.target + ".zip")')"
 * $ checksum="$(grep -e "${file}" release_digests.sha256 | awk '1 == NR {print $NF; exit;}')"
 * $ deno upgrade --checksum="${checksum}" "${version}"

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I went looking for the source of the original extract function. The oldest version that I managed to find was from:

• 2010-012-24: https://github.com/ohmyzsh/ohmyzsh/blob/ff0b25b745494d96ae06694321b2299991620b14/lib/functions.zsh#L41-L60

• 2013-010-17: https://gist.github.com/pcbulai/7024143#file-bashrc

• 2016-003-01: https://github.com/dotgc/dotfiles/blob/4883740121c3cd619d63609b295e839d49815ac4/.bashrc.d/functions.bash#L1-L23

Which is currently located at:

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~/.cache $ DEBUG_ZX_SH=true zx_run 'jsr:@webpod/zx' <<<'console.log( await $({ verbose: true })`echo Hello world! | xargs -t -n 1 echo` )'
+ install -d -m 00775 /data/data/com.termux/files/../cache/zx
+ cd /data/data/com.termux/files/../cache/zx
+ zx=jsr:@webpod/zx
+ shift
+ exec deno run --no-config --allow-read=/data/data/com.termux/files/usr/bin/bash --allow-read=/data/data/com.termux/files/files/home --allow-read=/data/data/com.termux/files/../cache --ignore-read --allow-write=/data/data/com.termux/files/../cache/zx --allow-env --allow-run --allow-sys=homedir,uid,gid,cpus -- jsr:@webpod/zx

tcely

MD5 (Win10_22H2_English_x32.iso) = 0d2602fe97ee8bb6812e1e6e7732e7b5
SHA1 (Win10_22H2_English_x32.iso) = 3704f52690e6f84d010f9a10faf598348ff11081
SHA256 (Win10_22H2_English_x32.iso) = 7cb5e0e18b0066396a48235d6e56d48475225e027c17c0702ea53e05b7409807
SHA512 (Win10_22H2_English_x32.iso) = d3c2f7d7188ece1bed197581f495071646411522560a9459789efd2afd0d7bc88d940b6150c7cb09aad737b45f33ef622c806892c9aa7174e000b8ae51e11dc4

tcely

#!/usr/bin/env python3

from collections import deque as queue

def fib_q(n):
    if n < 2:
        return n
    memo = queue((0, 1,), maxlen=2)
    for i in range(1, n):
        im2 = memo.popleft()

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def newtons_sqrt(i, /, *, precision=1e-10):
    loops = 0
    x = (1+i) // 2
    d = i
    n_x = 0
    print(f'{precision=}', flush=True)
    while loops < x and abs(d) > precision:
        loops += 1
        print(f'{loops=} abs(d) = {abs(d)}: {d=}', flush=True)
        n_x = x - (x*x - i)/(2*x)

tcely

#!/usr/bin/env python3

import datetime
import os

# import wmi
# https://github.com/tjguk/wmi
# https://github.com/tcely/wmi

class LastBoot: