miguelmota

const { BigNumber, Signer } = require('ethers')
const { keccak256, recoverAddress, joinSignature, resolveProperties, serializeTransaction, hashMessage, arrayify, defineReadOnly } = require('ethers/lib/utils')
const { KMSClient, GetPublicKeyCommand, SignCommand } = require('@aws-sdk/client-kms')
const asn1 = require('asn1.js')

const EcdsaPubKey = asn1.define('EcdsaPubKey', function () {
  this.seq().obj(
    this.key('algo').seq().obj(
      this.key('a').objid(),
      this.key('b').objid()

mxmauro

How to sign git tags and commits

The following step-by-step guide will assist you to start pushing signed commits and create signed tags. This is a quick-start guide. For more details, you can visit here and here.

There some topics to take into account on why we decided to follow a specific approach on certificate management:

• GitHub does not handle master certificates revocation but the community seems to not care about this because the purpose of these certificates is to demostrate to others that you are you and not other person impersonating you. If your certificate expires or is stolen, you simply create a new one and upload it to GitHub. Because GitHub also verifies the email address, a thief must also gain to your account in order to be able to use it.
• Using subkeys is preferable but updating them and GitHub periodically can become a pa

statik

import * as cdk from "@aws-cdk/core";
import * as wafv2 from "@aws-cdk/aws-wafv2";

// This extends the base cdk stack properties to include a tag name input.
export interface StackProps extends cdk.StackProps {
    tag: string;
    applicationName?: string;
}

export class WAFStack extends cdk.Stack {

cocowalla

using System;
using System.Security.Cryptography;

// ReSharper disable SuggestVarOrType_SimpleTypes - BCL rules
namespace Crypto
{
    /// <summary>
    /// Simple implementation of ECIES (Elliptic Curve Integrated Encryption Scheme) based on http://www.secg.org/sec1-v2.pdf, section 5.1
    /// Things not implemented:
    /// - Encoding parameters using compressed points; only uncompressed points are used

ChaoLiangSuper

import crypto from 'crypto';

const ALGORITHM = 'aes-256-cbc';
const ENCODING = 'hex';
const IV_LENGTH = 16;
const KEY = process.env.ENCRYPTION_KEY!;

export const encrypt = (data: string) => {
  const iv = crypto.randomBytes(IV_LENGTH);
  const cipher = crypto.createCipheriv(ALGORITHM, new Buffer(KEY), iv);

JaimeStill

Active Directory Authentication

This will provide an example of integrating Active Directory authentication in an ASP.NET Core app.

Note, you'll need to be running on a Windows domain with Visual Studio debugging in IIS Express for this to work.

Setup

In launchSettings.json, you'll want to modify iisSettings by turning on windowsAuthentication:

isaiastavares

import { Injectable } from '@angular/core';
import * as firebase from 'firebase/app';
import { AngularFirestore, AngularFirestoreDocument, AngularFirestoreCollection } from 'angularfire2/firestore';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/do';
import 'rxjs/add/operator/take';
import 'rxjs/add/operator/toPromise';
import 'rxjs/add/operator/switchMap';

dschep

Installing Python 3.6 on Raspbian

As of January 2018, Raspbian does not yet include the latest Python release, Python 3.6. This means we will have to build it ourselves, and here is how to do it. There is also an ansible role attached that automates it all for you.

1. Install the required build-tools (some might already be installed on your system).

rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

---

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

leewinder

// Password strengths
export const enum PasswordCheckStrength {
    Short,
    Common,
    Weak,
    Ok,
    Strong,
};

// Object to check password strengths and various properties