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@ezimuel
ezimuel / sign.sh
Created March 14, 2016 15:50
Sign and verify a file using OpenSSL command line tool. It exports the digital signature in Base64 format.
#!/bin/bash
# Sign a file with a private key using OpenSSL
# Encode the signature in Base64 format
#
# Usage: sign <file> <private_key>
#
# NOTE: to generate a public/private key use the following commands:
#
# openssl genrsa -aes128 -passout pass:<passphrase> -out private.pem 2048
# openssl rsa -in private.pem -passin pass:<passphrase> -pubout -out public.pem
@jglick
jglick / docker-workflow-demo.groovy
Last active March 31, 2024 22:51
node {
// https://registry.hub.docker.com/_/maven/
def maven32 = docker.image('maven:3.2-jdk-7-onbuild');
stage 'Mirror'
// First make sure the slave has this image.
// (If you could set your registry below to mirror Docker Hub,
// this would be unnecessary as maven32.inside would pull the image.)
maven32.pull()
// We are pushing to a private secure docker registry in this demo.
@arturmkrtchyan
arturmkrtchyan / ObjectHeader32.txt
Last active April 8, 2024 02:03
Java Object Header
|----------------------------------------------------------------------------------------|--------------------|
| Object Header (64 bits) | State |
|-------------------------------------------------------|--------------------------------|--------------------|
| Mark Word (32 bits) | Klass Word (32 bits) | |
|-------------------------------------------------------|--------------------------------|--------------------|
| identity_hashcode:25 | age:4 | biased_lock:1 | lock:2 | OOP to metadata object | Normal |
|-------------------------------------------------------|--------------------------------|--------------------|
| thread:23 | epoch:2 | age:4 | biased_lock:1 | lock:2 | OOP to metadata object | Biased |
|-------------------------------------------------------|--------------------------------|--------------------|
|
@stupidbodo
stupidbodo / aes_encryption.go
Last active January 3, 2024 10:29
AES Encryption Example in Golang
// Playbook - http://play.golang.org/p/3wFl4lacjX
package main
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"crypto/rand"
"encoding/base64"
@soarez
soarez / ca.md
Last active May 23, 2024 22:39
How to setup your own CA with OpenSSL

How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.

@konklone
konklone / Dockerfile
Created September 22, 2013 18:17
Dockerfile for installing Ruby 2.0 and RVM
FROM ubuntu
MAINTAINER Eric Mill "eric@konklone.com"
# turn on universe packages
RUN echo "deb http://archive.ubuntu.com/ubuntu raring main universe" > /etc/apt/sources.list
RUN apt-get update
# basics
RUN apt-get install -y nginx openssh-server git-core openssh-client curl
RUN apt-get install -y nano
@brikis98
brikis98 / Instrumentation.scala
Last active December 15, 2015 09:09
// A single wrapper method for all the instrumentation functions
def withInstrumentation[T](f: => Future[T], fallback: T, duration: Long = 5000): Future[T] = {
withErrorHandling(
withTimeout(withTiming(f), duration, fallback),
fallback
)
}
val myFuture = withInstrumentation(someAsyncIO(), "fallback value")
@jjkoshy
jjkoshy / gist:3842975
Created October 5, 2012 23:04
zkserializer
client.setZkSerializer(new ZkSerializer() {
@Override
public byte[] serialize(Object o)
throws ZkMarshallingError
{
return ZKStringSerializer.serialize(o);
}
@Override
public Object deserialize(byte[] bytes)
@visualzhou
visualzhou / gist:3347849
Created August 14, 2012 09:37
Douban Cross-domain Ajax
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<div id="images">
</div>
<script>
@dangayle
dangayle / nginx-mobile-redirect
Created June 12, 2012 18:24
NGINX Mobile redirect
#with regex from http://detectmobilebrowsers.com/
#map suggestion via kolbyjack
#not tested
map $http_user_agent $mobile_agent{
default 0;
~* "android.+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino" 1;
~* "^(1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibr