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@marcan
marcan / linux.sh
Last active July 21, 2024 14:00
Linux kernel initialization, translated to bash
#!/boot/bzImage
# Linux kernel userspace initialization code, translated to bash
# (Minus floppy disk handling, because seriously, it's 2017.)
# Not 100% accurate, but gives you a good idea of how kernel init works
# GPLv2, Copyright 2017 Hector Martin <marcan@marcan.st>
# Based on Linux 4.10-rc2.
# Note: pretend chroot is a builtin and affects the current process
# Note: kernel actually uses major/minor device numbers instead of device name
@atoponce
atoponce / gist:07d8d4c833873be2f68c34f9afc5a78a
Last active July 26, 2024 09:10 — forked from tqbf/gist:be58d2d39690c3b366ad
Cryptographic Best Practices

Cryptographic Best Practices

Putting cryptographic primitives together is a lot like putting a jigsaw puzzle together, where all the pieces are cut exactly the same way, but there is only one correct solution. Thankfully, there are some projects out there that are working hard to make sure developers are getting it right.

The following advice comes from years of research from leading security researchers, developers, and cryptographers. This Gist was [forked from Thomas Ptacek's Gist][1] to be more readable. Additions have been added from

// Slightly modified Adalight protocol implementation that uses FastLED
// library (http://fastled.io) for driving WS2811/WS2812 led stripe
// Was tested only with Prismatik software from Lightpack project
#include "FastLED.h"
#define NUM_LEDS 114 // Max LED count
#define LED_PIN 6 // arduino output pin
#define GROUND_PIN 10
#define BRIGHTNESS 255 // maximum brightness
@rcrowley
rcrowley / grace.go
Last active March 1, 2023 16:06
Graceful stop in Go
package main
import (
"log"
"net"
"os"
"os/signal"
"sync"
"syscall"
"time"