Mahmoud Rusty Abdelkader mahmoudimus

Brew Bundle Brewfile Tips

Copyright & License

Unless otherwise noted (either in this file or in a file's copyright section) the contents of this gist are Copyright ©️2020 by Christopher Allen, and are shared under spdx:Creative Commons Attribution Share Alike 4.0 International (CC-BY-SA-4.) open-source license.

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BLS Signature for Busy People

Summary

BLS stands for
- Barreto-Lynn-Scott: BLS12, a Pairing Friendly Elliptic Curve.
- Boneh-Lynn-Shacham: A Signature Scheme.
Signature Aggregation
It is possible to verify n aggregate signatures on the same message with just 2 pairings instead of n+1.

strongSwan setup for Road Warriors on macOS 10.12, iOS 10 and Windows 10

This setup is for remote users to connect into an office/home LAN using a VPN (ipsec). This is based on (but not the same as) the strongSwan documentation and this guide: https://raymii.org/s/tutorials/IPSEC_vpn_with_Ubuntu_16.04.html

I used strongSwan 5.5.1.

apt-get install -y strongswan strongswan-pki

Introduction

The purpose of this short howto is to show you how to:

use openconnect [1] to connect to an enterprise cisco anyconnect endpoint
whilst minimizing the amount of traffic that your route through the vpn connection

Usually VPN administrators will puth the default route to the users, so that all user traffic is routed through the vpn connection. This is to address the various security concerns around compromised user computers bridging external internet traffic into the secure VPN network.

While the VPN administrator can push routes to the clients, the client can ignore these default routes and establish client side routing so that only the required A.B.C.D/E network is routed through the VPN. All other traffic will still use the clients default route and default outbound internet connection.

UPDATE 2023-01-22 21:34:33

This guide was last tested on an Intel MacBook 2017. Since then it's unmaintained and won't be updated (I quit the game and bought a life-time crossover licence).

This has been forked from https://gist.github.com/Alex4386/4cce275760367e9f5e90e2553d655309

For the latest discussion, see the comments there.

	#!/usr/bin/env python3

	import sys
	import struct
	import math

	# Constants
	# Internal (LEB128 buffer)
	MAX_ULEB_SIZE = 256 # Maximum proto size here is 2^7^256

	import idaapi, idc, idautils


	class DecryptorError(Exception):
	pass


	def rc4crypt(key, data):
	x = 0
	box = list(range(256))

	#!/bin/bash
	BG_RED=`tput setaf 1`
	BG_GREEN=`tput setaf 2`
	BOLD=`tput bold`
	RESET=`tput sgr0`

	EMACS='/Applications/Emacs.app'
	EMACS_CLIENT='/Applications/Emacs.app/Contents/MacOS/bin/emacsclient'

	DEFAULT_EVAL='(switch-to-buffer "scratch")'

	;; Copyright 2020 Nicolas Rougier - BSD License
	;; Usage: emacs -q -l bordered.el
	(set-face-font 'default "Roboto Mono Light 14")
	(setq default-frame-alist
	(append (list '(width . 72) '(height . 40)
	'(vertical-scroll-bars . nil)
	'(internal-border-width . 0)
	'(font . "Roboto Mono Light 14"))))
	(set-frame-parameter (selected-frame)
	'internal-border-width 0)

	# NOTE pre-requisite: ~/.ssh/google_compute_engine is a GCE access key, see https://cloud.google.com/compute/docs/instances/connecting-to-instance
	# NOTE google compute zone must be pre-set somehow: e.g. see in https://cloud.google.com/sdk/gcloud/reference/compute/scp

	dev() {
	if [ -z "$1" ]
	then echo "USAGE: dev <docker host command...> # FROM A PROJECT DIRECTORY, DEV_DOCKER_MACHINE needs to be set, AFTER dev-init...!" 1>&2
	return 999
	fi

	machine_name=$DEV_DOCKER_MACHINE