Zicklag zicklag

How to Generate & Use Private Keys using OpenSSL's Command Line Tool

These commands generate and use private keys in unencrypted binary (not Base64 “PEM”) PKCS#8 format. The PKCS#8 format is used here because it is the most interoperable format when dealing with software that isn't based on OpenSSL.

OpenSSL has a variety of commands that can be used to operate on private key files, some of which are specific to RSA (e.g. openssl rsa and openssl genrsa) or which have other limitations. Here we always use

Exploding cards

This is a variant of the Exploding Kittens game rules, using regular playing cards

1 deck: 3 to 8 players
2 decks: up to 16 players

Objective

The last survivor wins the game. If you draw a Bomb card and don't have a Disarm card, you die.

Preparing the game

How to use?

Copy content of vsix-bookmarklet, create a bookmark in your browser.
Navigate to the web page of the VS Code extension you want to install.
Click the bookmark you just created, then click the download button.
After download finished, rename the file extension to *.vsix.
In VS Code, select Install from VSIX... in the extension context menu.

Hello, Rust community!

My name is Hadrien and I am a software performance engineer in a particle physics lab. My daily job is to figure out ways to make scientific software use hardware more efficiently without sacrificing its correctness, primarily by adapting old-ish codebases to the changes that occured in the software and computing landscape since the days where they were designed:

CPU clock rates and instruction-level parallelism stopped going up, so optimizing code is now more important.
Multi-core CPUs went from an exotic niche to a cheap commodity, so parallelism is not optional anymore.
Core counts grow faster than RAM prices go down, so multi-processing is not enough anymore.
SIMD vectors become wider and wider, so vectorization is not a gimmick anymore.

Creating a Proxy Proxy for Skipping Proxy Authentication Prompts

Update

I found an easier way to do this with a Go program that doesn't require writing a script and installing node. Check out this comment.

Original Solution

Some programs support a proxy, but they don't support authentication without prompting. This is the case with Chrome and VSCode. This caused me problems particularly when trying to automate Chrome with Selenium. The workaround is to run a local proxy, set your http_proxy environment variables to the local proxy, and tell the local proxy to, in turn, proxy requests to your real proxy and to include your username and password.

Interesting general purpose crates to consider

peroxide

Rust comprehensive scientific computation library contains linear algebra, numerical analysis, statistics and machine learning tools with farmiliar syntax

Bindings

faiss

Rust language bindings for Faiss, the state-of-the-art vector search and clustering library.

liblinear

Rust bindings for the liblinear C/C++ library. Provides a thin (but rustic) wrapper around the original C-interface exposed by the library.

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	/**
	* Creates a new Uint8Array based on two different ArrayBuffers
	*
	* @private
	* @param {ArrayBuffers} buffer1 The first buffer.
	* @param {ArrayBuffers} buffer2 The second buffer.
	* @return {ArrayBuffers} The new ArrayBuffer created out of the two.
	*/
	var _appendBuffer = function(buffer1, buffer2) {
	var tmp = new Uint8Array(buffer1.byteLength + buffer2.byteLength);

	#! /usr/bin/env bash

	# Install any build dependencies needed for curl
	sudo apt-get build-dep curl

	# Get latest (as of Feb 25, 2016) libcurl
	mkdir ~/curl
	cd ~/curl
	wget http://curl.haxx.se/download/curl-7.50.2.tar.bz2
	tar -xvjf curl-7.50.2.tar.bz2

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	https://www.blogger.com/blog-this.g?u={url}&n={title}&t={text}
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