anakornk

pragma solidity ^0.4.11;

/**
 * Math operations with safety checks
 */
library SafeMath {
  function mul(uint a, uint b) internal returns (uint) {
    uint c = a * b;
    assert(a == 0 || c / a == b);
    return c;

anakornk

let ua = navigator.userAgent.toLowerCase();
let isLine = ua.match(/line/i) == 'line';
let isFacebook = ua.indexOf('fban') > -1 || ua.indexOf('fbav') > -1;
let isAndroid = ua.match(/android/i);

if (isLine || isFacebook) {
  let img = document.createElement('img');

  img.src = 'https://fm101talk.com/wp-content/uploads/2020/04/corner.png';
  img.style.position = 'fixed';

anakornk

# RS256
# private key
openssl genrsa -out rs256-4096-private.rsa 4096
# public key
openssl rsa -in rs256-4096-private.rsa -pubout > rs256-4096-public.pem

# ES512
# private key
openssl ecparam -genkey -name secp521r1 -noout -out ecdsa-p521-private.pem
# public key