atoponce

Cryptography, not cryptocurrency

Books

• Handbook of Applied Cryptography
• Serious Cryptography: A Practical Introduction to Modern Encryption
• Cryptography Engineering: Design Principles and Practical Applications

Resources

• Cryptopals Challenges
• CryptoHack Challenges

munificent

#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

main.rs

#![feature(non_ascii_idents)]

fn main() {
    std::env::args().nth(1)
    .ok_or(format!("Usage: {} FILE", std::env::args().next().unwrap())) // File name
    .and_then(|filename| {
        std::fs::File::open(&filename)
            .map_err(|e| (&e as &std::error::Error).description().to_string())
    }).map(|f| (f, String::new()))
    .map(|(mut f, mut s)| ((&mut f as &mut std::io::Read).read_to_string(&mut s), s))

main.rs

#![feature(non_ascii_idents)]

use std::io::{Write, BufRead, BufReader};
use std::process::exit;
use std::fs::File;

fn main() {
    let args : Vec<_> = std::env::args().collect();

    if args.len() != 2 {

drkarl

GPG / Mutt / Gmail

About

This is a collection of snippets, not a comprehensive guide. I suggest you start with Operational PGP.

Here is an incomplete list of things that are different from other approaches:

• I don't use keyservers. Ever.
• Yes, I use Gmail instead of some bespoke hipster freedom service

brock

• Be me
• forget the exact syntax for using rsync.
• get nested folders by mistake or end up with lots of files in the current directory
• sync files then delete files like 100 times as you try to remember the syntax
• look at the man page and then try again
• get nested folders by mistake or end up with lots of files in the current directory
• sync files then delete files like 100 times as you try to remember the syntax
• finally figure it out

---

SoniEx2

Did you know?

Steam chat, the thing you use while playing games, mangles your messages for you... It's especially interesting when sending shell commands.

• ~/.ssh/config becomes http://ssh/config
• $HOME/.ssh/config becomes http://HOME/.ssh/config
• ${HOME}/.ssh/config becomes http://HOME}/.ssh/config

PurpleBooth

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

CMCDragonkai

Rust/Haskell: Higher-Kinded Types (HKT)

A higher kinded type is a concept that reifies a type constructor as an actual type.

A type constructor can be thought of in these analogies:

• like a function in the type universe
• as a type with a "hole" in it

SurealCereal

#!/bin/bash
# Call with either enable or disable as first parameter
if [[ "$1" == 'enable' || "$1" == 'disable' ]]; then
  sudo systemctl set-default multi-user.target --force
  sudo systemctl $1 lightdm.service --force
  sudo systemctl $1 graphical.target --force
  sudo systemctl $1 plymouth.service --force
else
  echo Call with either "enable" or "disable" as first parameter.
fi