Skip to content

Instantly share code, notes, and snippets.

View kavu's full-sized avatar

Max Riveiro kavu

173 followers · 132 following
View GitHub Profile
@loveemu
loveemu / xm-form-ja.md
Last active July 20, 2024 08:27
The "Complete" XM module format specification v0.81
@munificent
munificent / generate.c
Last active September 15, 2024 03:16
A random dungeon generator that fits on a business card
#include <time.h> // Robert Nystrom
#include <stdio.h> // @munificentbob
#include <stdlib.h> // for Ginny
#define r return // 2008-2019
#define l(a, b, c, d) for (i y=a;y\
<b; y++) for (int x = c; x < d; x++)
typedef int i;const i H=40;const i W
=80;i m[40][80];i g(i x){r rand()%x;
}void cave(i s){i w=g(10)+5;i h=g(6)
+3;i t=g(W-w-2)+1;i u=g(H-h-2)+1;l(u
@HarryR
HarryR / compare-mulmod-modexp.sol
Created November 26, 2018 20:35
Compares the cost of mulmod versus the cost of modexp
pragma solidity ^0.5.0;
contract CompareMulExp
{
// altBN curve order
uint256 constant CURVE_ORDER = 0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001;
/**
* @dev Computes (base ^ exponent) % modulus over big numbers.
*/
@CAFxX
CAFxX / Colorized and formatted go tool objdump output.png
Last active July 7, 2023 17:51
Colorized and formatted go tool objdump output
Colorized and formatted go tool objdump output.png
@jiahuif
jiahuif / main.go
Created October 16, 2017 06:00
golang: tunnel tcp over socks5
package main
import (
"flag"
"io"
"net"
"time"
log "github.com/sirupsen/logrus"
"golang.org/x/net/proxy"
@ageis
ageis / YubiKey-GPG-SSH-guide.md
Last active September 10, 2024 14:48
Technical guide for using YubiKey series 4 for GPG and SSH

YubiKey 4 series GPG and SSH setup guide

Written for fairly adept technical users, preferably of Debian GNU/Linux, not for absolute beginners.

You'll probably be working with a single smartcard, so you'll want only one primary key (1. Sign & Certify) and two associated subkeys (2. Encrypt, 3. Authenticate). I've published a Bash function which automates this slightly special key generation process.

@izqui
izqui / forwarder.sol
Last active October 21, 2021 04:24
Very cheap to deploy (66k gas) forwarder contracts that can clone any contract and still have their own storage
// Bytecode origin https://www.reddit.com/r/ethereum/comments/6ic49q/any_assembly_programmers_willing_to_write_a/dj5ceuw/
// Modified version of Vitalik's https://www.reddit.com/r/ethereum/comments/6c1jui/delegatecall_forwarders_how_to_save_5098_on/
// Credits to Jordi Baylina for this way of deploying contracts https://gist.github.com/jbaylina/e8ac19b8e7478fd10cf0363ad1a5a4b3
// Forwarder is slightly modified to only return 256 bytes (8 normal returns)
// Deployed Factory in Kovan: https://kovan.etherscan.io/address/0xaebc118657099e2110c90494f48b3d21329b23eb
// Example of a Forwarder deploy using the Factory: https://kovan.etherscan.io/tx/0xe995dd023c8336685cb819313d933ae8938009f9c8c0e1af6c57b8be06986957
// Just 66349 gas per contract
@dogeared
dogeared / 00_README
Last active November 24, 2020 23:47 — forked from lmarkus/README.MD
Extracting / Exporting custom emoji from Slack
This builds off the excellent work of @lmarkus.
The scripts below can be used in conjunction with the Slack Emoji Tools Google Chrome extension to export emojis from
one Slack team and import into another team.
Original work here: https://gist.github.com/lmarkus/8722f56baf8c47045621
@axic
axic / MemcpyTest.sol
Created December 2, 2016 09:34
pragma solidity ^0.4.6;
contract MemcpyTest {
function test(string input) returns (string output) {
uint len = bytes(input).length;
output = new string(len);
uint _input;
uint _output;
assembly {
@steipete
steipete / SpinlockTestTests.swift
Last active August 29, 2023 08:47 — forked from RomanTruba/Synchronization_test_iOS_SDK10
Updated for Xcode 8, Swift 3; added os_unfair_lock
//
// SpinlockTestTests.swift
// SpinlockTestTests
//
// Created by Peter Steinberger on 04/10/2016.
// Copyright © 2016 PSPDFKit GmbH. All rights reserved.
//
import XCTest