CMCDragonkai

LInux VirtualBox running Windows VM

You can download Windows VM from https://developer.microsoft.com/en-us/windows/downloads/virtual-machines/.

After importing OVA, to run it, you need to change Display settings to be:

• Graphics Controller: VBoxVGA
• Disable Enable 3D Acceleration

Otherwise you'll enter a boot-loop.

CMCDragonkai

Capital One WiFi on Linux

nmcli device wifi connect 'CapitalOneCafe'

Then visit: https://retailwifi.capitalone.com/ on Firefox.

Then click on the Connect to free WiFi.

CMCDragonkai

{"payload":"eyJpYXQiOjE2OTgxOTEyOTksImlzcyI6InY2MGcyM2I0YjlnNXRxMm5wYzNrcGlrcGFscXFkcHV2b2NlZ2RkOGJzZGoyOGExaHNwMGcwIiwianRpIjoidjBwOW9hdjFhOWxvMDEzMDgxMWxpNWtvMnVzIiwibmJmIjoxNjk4MTkxMjk5LCJwcmV2Q2xhaW1JZCI6bnVsbCwicHJldkRpZ2VzdCI6bnVsbCwic2VxIjoxLCJzdWIiOiJbXCJnaXRodWIuY29tXCIsXCJDTUNEcmFnb25rYWlcIl0iLCJ0eXAiOiJDbGFpbUxpbmtJZGVudGl0eSJ9","signatures":[{"protected":"eyJhbGciOiJFZERTQSIsImtpZCI6InY2MGcyM2I0YjlnNXRxMm5wYzNrcGlrcGFscXFkcHV2b2NlZ2RkOGJzZGoyOGExaHNwMGcwIn0","signature":"gMBHBQC8rqpglzQhzZYNxYYt4-bbeKZYelVKyfcoHVgITDma7DYBM4N-yf0O5hWucKlQCaXTCWfiCsXZXAwCAA"}]}

CMCDragonkai

VirtualBox Shared Folders

Ubuntu

Follow this https://ubuntu.com/tutorials/how-to-run-ubuntu-desktop-on-a-virtual-machine-using-virtualbox#1-overview. Assuming you tick the guest additions, it will all be setup.

Then setup shared folders:

CMCDragonkai

// I've deliberately named this `forP_` becaus it matches Haskell's `forP_` too

function forP_<T, P extends PromiseLike<void> = Promise<void>>(
  items: readonly T[],
  f: (item: T) => PromiseLike<void>,
  seed?: P
): P {
  return items.reduce((pChain, item) => {
    return pChain.then(() => f(item));
  }, seed ?? Promise.resolve()) as P;

CMCDragonkai

import type { JsonWebKey } from 'crypto';
import crypto from 'crypto';

/**
 * Generates equivalent to RSASSA-PKCS1-v1_5 keypair
 */
async function generateKeyPairRSA(): Promise<{
  publicKey: JsonWebKey,
  privateKey: JsonWebKey
}> {

CMCDragonkai

What is Trust?

It's the relationship between entities that allow them to co-operate with each other.

For trust to be required, there must be vulnerability, as in chance that the counter party might cheat.

At the same time, for trust to exist, one must believe that the counter party has an incentive to co-operate instead of cheating.

If there is no vulnerability, there is no need for trust.

CMCDragonkai

WeWork WiFi on Linux

When using nmcli device wifi connect 'WeWorkWiFi' password '...', you'll get something like:

Error: Failed to add/activate new connection: Failed to determine AP security information

To actually use it, you need to create a connection first and configure it:

CMCDragonkai

There are number of ways of creating tagged unions.

type X = { type: A, prop: number } | { type: B, prop: string };

type Y = { type: A, data: { prop: number } } | { type: B, data: { prop: string } };

type Z = ['A', { prop: number }] | ['B', { prop: string }];

CMCDragonkai

import * as nobleEd25519 from '@noble/ed25519';

/**
 * Checks if the public key is a point on the Ed25519 curve
 */
function validatePublicKey(publicKey: Buffer): boolean {
  try {
    nobleEd25519.Point.fromHex(publicKey);
    return true;
  } catch {