Pedro Gomes pedrouid

## webcrypto-examples.md

      
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                pedrouid
                / webcrypto-examples.md
            
            
              Created
              December 15, 2018 01:07
            
              
                Web Cryptography API Examples
              
          
    Web Cryptography API Examples

Live Table: https://diafygi.github.io/webcrypto-examples/
I couldn't find anywhere that had clear examples of WebCryptoAPI, so I
wrote examples and made a live table with them. Pull requests welcome!

RSASSA-PKCS1-v1_5


generateKey |
importKey |


## devops-cheatsheet.md

      
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              November 29, 2025 11:44
            
              
                Digital Ocean DevOps Cheatsheet (Ubuntu 16.04)
              
          
    Digital Ocean DevOps Cheatsheet (Ubuntu 16.04)

How to Deploy a Node.js App with SSL

Create an SSH key

We will need this for our server configuration

Open console


## setup-ssl.md

      
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                Setup SSL with NGINX reverse proxy
              
          
    Get a Free SSL Certificate With Let’s Encrypt

Let’s Encrypt is a free, automated, and open Certificate Authority.

Install tools for using the Let's Encrypt certificates using Certbot

  sudo apt-get update \
  sudo apt-get install software-properties-common

  
## crypto-in-react-native.md

      
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                Using crypto NodeJS module polyfill in React-Native (step-by-step)
              
          
    Using crypto NodeJS module in React-Native (step-by-step)

This tutorial will show you how to polyfill crypto and other NodeJS modules globally in a React-Native environment.
Please note that these implementations are purely javascript and don't use native modules to generate random numbers
Step 1 - Install dependencies

Run the following command


## index.html
<html>
  <head>
    <meta charset="utf-8" />
    <link rel="shortcut icon" href="/favicon.ico" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1, shrink-to-fit=no"
    />
    <meta name="theme-color" content="#000000" />
    <title>WalletConnect Example</title>

## walletconnect-instant.md

      
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              June 26, 2024 13:04
            
              
                WalletConnect Instant ⚡
              
          
    WalletConnect Instant ⚡

What's an Instant Request?

WalletConnect Instant feature introduces the ability to make an ephemeral session that bypasses the process of session approval by the wallet, displaying to the user  a call request to be signed from the Dapp right after scanning the QR Code. This is useful for one-time use-cases like payments, topping-up or withdrawals. This is still highly experimental and hasn't been published to the official library. A PoC to aggregate feedback on this feature!
Source code available at WalletConnect/walletconnect-monorepo on walletconnect-instant branch.
Install


## index.tsx
import React from "react";
import * as uuid from 'uuid';

import { WindowProvider } from "@wagmi/connectors"

import defaultProviderIcon from "../assets/defaultProviderIcon.png"

// copied from https://github.com/wagmi-dev/references/blob/main/packages/connectors/src/utils/getInjectedName.ts
function getInjectedName(ethereum?: WindowProvider) {
  if (!ethereum) return 'Injected'

## randomDomainNameGenerator.js
// @desc Creates a list of domains with custom TLDs using a pattern string with fixed length with option for keywords
// @param   {String}        pattern
// @param   {Array|String}  tlds
// @returns {Array}         domainList
//
//
// Pattern string is defined by:
// - keywords         lowercase
// - any letter       uppercase A
// - consonants       uppercase C

## list.sh
REQ wc_pairingDelete
- ttl = 86400
- tag = 1000
- msg = 400 (~312)

RES wc_pairingDelete
- ttl = 86400
- tag = 1001
- msg = ??

## index.js
// Our RPC id's are expected to be the same "length"
// generating id's should use Unix epoch timestamp in miliseconds and append 3 random digits
// currently Kotlin SDK has at least 3 more digits than all other SDKs
// yet while Kotlin is the minority, it's preferable to increase integers than decrease them
// this way we can keep backwards-compatibility for Kotlin clients in older releases
// thus we could also increase entropy by also increasing other SDKs to 6 random digits

function payloadId() {
  const date = Date.now() * Math.pow(10, 6);
  const extra = Math.ceil(Math.random() * Math.pow(10, 6));
	<html>
	<head>
	<meta charset="utf-8" />
	<link rel="shortcut icon" href="/favicon.ico" />
	<meta
	name="viewport"
	content="width=device-width, initial-scale=1, shrink-to-fit=no"
	/>
	<meta name="theme-color" content="#000000" />
	<title>WalletConnect Example</title>
	import React from "react";
	import * as uuid from 'uuid';

	import { WindowProvider } from "@wagmi/connectors"

	import defaultProviderIcon from "../assets/defaultProviderIcon.png"

	// copied from https://github.com/wagmi-dev/references/blob/main/packages/connectors/src/utils/getInjectedName.ts
	function getInjectedName(ethereum?: WindowProvider) {
	if (!ethereum) return 'Injected'
	// @desc Creates a list of domains with custom TLDs using a pattern string with fixed length with option for keywords
	// @param {String} pattern
	// @param {Array\|String} tlds
	// @returns {Array} domainList
	//
	//
	// Pattern string is defined by:
	// - keywords lowercase
	// - any letter uppercase A
	// - consonants uppercase C
	REQ wc_pairingDelete
	- ttl = 86400
	- tag = 1000
	- msg = 400 (~312)

	RES wc_pairingDelete
	- ttl = 86400
	- tag = 1001
	- msg = ??
	// Our RPC id's are expected to be the same "length"
	// generating id's should use Unix epoch timestamp in miliseconds and append 3 random digits
	// currently Kotlin SDK has at least 3 more digits than all other SDKs
	// yet while Kotlin is the minority, it's preferable to increase integers than decrease them
	// this way we can keep backwards-compatibility for Kotlin clients in older releases
	// thus we could also increase entropy by also increasing other SDKs to 6 random digits

	function payloadId() {
	const date = Date.now() * Math.pow(10, 6);
	const extra = Math.ceil(Math.random() * Math.pow(10, 6));