amiller

pragma solidity ^0.8.0;
// "SPDX-License-Identifier: UNLICENSED"

/* 
 Honey Object as an Oasis Sapphire contract

 Could be used to demonstrate side channels

 */

amiller

https://xiaziyna.github.io/

amiller

pragma solidity ^0.5.0;

contract MyContract {
    // 0x83CC162a944afA8537DAaDec8f39C88E4B6c4E31   mainnet registry
    // mainnet resolver
    
    // 0x12a0083531C904fe4ac490DF231c2e4e4403dB60 ropsten registry
    // 0x12299799a50340FB860D276805E78550cBaD3De3 ropsten resolver
    ETHRegistrarController registrar = ETHRegistrarController(0x12a0083531C904fe4ac490DF231c2e4e4403dB60);
    BaseRegistrar base = BaseRegistrar(0x227Fcb6Ddf14880413EF4f1A3dF2Bbb32bcb29d7);

amiller

import json, sys
import subprocess
import requests
import time
import csv
import re

balances = {} # map addr => balance

# Parse the vote string

amiller

pragma solidity ^0.4.22;

contract ECVerify {
    function ecrecovery(bytes32 hash, bytes sig) public pure returns (address) {
        bytes32 r;
        bytes32 s;
        uint8 v;

        if (sig.length != 65) {
            return 0;

amiller

import asyncio
import concurrent.futures
import logging
import time
import random

# Examples of running in executor
# https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.ThreadPoolExecutor
# https://pymotw.com/3/asyncio/executors.html

amiller

import asyncio
import concurrent.futures
import logging
import time
import cffi
import random

# Examples of running in executor
# https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.ThreadPoolExecutor
# https://pymotw.com/3/asyncio/executors.html

amiller

pragma solidity ^0.4.22;
import "gist/Timer.sol";

contract Auction {

    address internal timerAddress;
    address internal sellerAddress;
    address internal winnerAddress;

    // constructor

amiller

pragma solidity ^0.4.22;   
// ECE 398 SC - Smart Contracts and Blockchain Security 
// http://soc1024.ece.illinois.edu/teaching/ece398sc/spring2018/

// Simpest possible duplex-micropayment channel
// - Funded with an up front amount at initialization
// - The contract creator is called "alice". The other party, "bob", is passed
// as an argument to the Constructor
// - There is no fixed deadline, but instead any party can initiate a dispute,
// which lasts for a fixed time

amiller

pragma solidity ^0.4.21;
// ECE 398 SC - Smart Contracts and Blockchain Security
// http://soc1024.ece.illinois.edu/teaching/ece398sc/spring2018/

contract SolidityChallenges {

    // 1. Simple syntax

    function arithmeticA(uint x) public pure returns(uint) {
        // The following fragment of code is a for-loop that assigns a value