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@sunnycyk
sunnycyk / self-signed-certificate-with-custom-ca.md
Created November 9, 2020 00:49 — forked from fntlnz/self-signed-certificate-with-custom-ca.md
Self Signed Certificate with Custom Root CA

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096
// const Web3 = require('web3')
// const Tx = require('ethereumjs-tx');
// const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'))
// ....
const data = contractInstance.methods.myMethods(param...).encodeABI()
const tx = new Tx(null)
tx.nonce = await web3.eth.getTransactionCount(hd_wallet_address)
tx.from = hd_wallet_address
tx.gasPrice = GAS_PRICE
# To Update
curl -sI https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz | awk '/Location:/ {print $2}'
# compute the hash
nix-prefetch-url --type 256 unpack <URL>
@sunnycyk
sunnycyk / lb.sh
Last active August 22, 2017 09:23
myscript
#!/bin/sh
echo "Start loopback scaffolding for $1"
echo "Enter name for application:"
read app
echo "Creating $app"
@sunnycyk
sunnycyk / updateallitems.py
Created December 17, 2016 05:35
dynamodb notes
import boto3
dynamodb = boto3.resource('dynamodb')
table = dynamodb.Table('table')
response = table.scan(
ProjectionExpression='#k,#s',
ExpressionAttributeNames={
'#k' : 'id', #partition key
#!/bin/bash
# install node.js - v4 and v6 have problem running strong-pm?
curl -sL https://rpm.nodesource.com/setup_5.x | bash -
apt-get install -y nodejs git
# install strong-pm
npm install -g strong-pm
# or sudo sl-pm-install --http-auth user:password
sudo sl-pm-install
@sunnycyk
sunnycyk / Observer.php
Last active June 6, 2017 00:37
Magento
<?php
class Custom_Module_Model_Observer {
public function customRedirect() {
$url = Mage::helper('core/url')->getCurrentUrl();
$url = Mage::getSingleton('core/url')->parseUrl($url);
$path = $url->getPath();
$action = Mage::app()->getRequest()->getActionName();
$pattern = '/[.*]?\/custommodule\/index\/[.*]?|[.*]?\/admin[$.*]?/';
@sunnycyk
sunnycyk / IFTTT-newFollower.ino
Created December 5, 2015 03:45
Duo Exampple
// This #include statement was automatically added by the Particle IDE.
#include "TM1637Display/TM1637Display.h"
TM1637Display display(4, 5); // connect CLK to D4, DIO to D5
int followers = 0; // or start with number that in your profile
void setup()
{
Serial.begin(9600);
@sunnycyk
sunnycyk / dismissMessage.m
Last active August 29, 2015 14:23
ios 8 notes
#pragma mark -MFMEssageComposeViewControllerDelegate
- (void)messageComposeViewController:(MFMessageComposeViewController *)controller
didFinishWithResult:(MessageComposeResult)result {
switch(result) {
case MessageComposeResultCancelled:
// user canceled sms
[self dismissViewControllerAnimated:YES completion:nil];
break;
@sunnycyk
sunnycyk / autodownload
Created May 24, 2015 05:10
Layer Notes
// ATLMIMETypeImageJPEGPreview, ATLMIMETypeTextPlain defined in Altas to present the MIME tpye for the medias
self.layerClient = [LYRClient clientWithAppID:YOUR_APP_ID];
self.layerClient.autodownloadMIMETypes = [NSSet setWithObjects:ATLMIMETypeImageJPEGPreview, ATLMIMETypeTextPlain, nil];