mcarbonneaux

{
    "basics": {
      "name": "Mathieu CARBONNEAUX OSUAGWU",
      "label": "Senior Infrastructure Solutions Architect",
      "photo": "https://www.ch2o.info/en/about/photocv.jpg",
      "picture": "https://www.ch2o.info/en/about/photocv.jpg",
      "image": "https://www.ch2o.info/en/about/photocv.jpg",
      "website": "https://www.ch2o.info",
      "summary": "**Introduction**\n\nPassionate about IT since childhood, I started programming at age 12 (Logo, Basic, Z80 assembler, 680x0, C/C++). My initial training, focused on electronics and industrial IT, then on management IT (client/server programming, network, system, database, and network architecture), gave me a comprehensive vision of IT from hardware to software.\n\nWith nearly 30 years of professional experience (since 1997), I have successively held roles as application developer, database administrator, system engineer, network engineer, security engineer, middleware expert, and finally Solutions Architect in very diverse business and technical co

mcarbonneaux

openapi: 3.0.3
info:
  title: Smallstep Certificates API
  description: |
    A private certificate authority (X.509 & SSH) & ACME server for secure automated certificate management.
    
    This API allows you to:
    - Issue and manage X.509 TLS certificates
    - Handle SSH certificates 
    - Manage certificate renewal and revocation

mcarbonneaux

Symmetic encryption

For symmetic encryption, you can use the following:

To encrypt:

openssl aes-256-cbc -salt -a -e -in plaintext.txt -out encrypted.txt

To decrypt:

mcarbonneaux

Porting Go to SPARC Solaris

Source: https://sysadm.life/posts/porting_golang_to_sparc/

Learn how to compile and port Go for SPARC Solaris Tue, 18 Dec 2018 label GO Solaris
This article aims to present the steps required to create a port of Go for SPARC Solaris. The ‘spark’ that kicked this idea off was part of an aspiration to first get the Prometheus node exporter for the core machine metrics running on SPARC tin for Solaris 11.3, then potentially other node exporters such as the JMX exporter and a Oracle DB exporter.

Note: Oracle announced Go version 1.7.6 will be available in Solaris 11.4. However, it seems like that 11.4 is a no go for a lot of SPARC hardware

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NAME                                                  TITLE
abusiveexperiencereport.googleapis.com                Abusive Experience Report API
acceleratedmobilepageurl.googleapis.com               Accelerated Mobile Pages (AMP) URL API
accessapproval.googleapis.com                         Access Approval API
accesscontextmanager.googleapis.com                   Access Context Manager API
actions.googleapis.com                                Actions API
adexchangebuyer-json.googleapis.com                   Ad Exchange Buyer API
adexchangebuyer.googleapis.com                        Ad Exchange Buyer API II
adexchangeseller.googleapis.com                       Ad Exchange Seller API
adexperiencereport.googleapis.com                     Ad Experience Report API

mcarbonneaux

Note

This tutorial is for Ubuntu & Squid3. Use AWS, Google cloud, Digital Ocean or any services with Ubuntu to follow this tutorial.

Install squid & update

sudo apt-get update
sudo apt-get install squid3
sudo apt-get install apache2-utils

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esphome:
  name: west_warehouse_access_control
  platform: ESP32
  board: esp32-poe
  includes:
    - custom_components/wiegand_device/wiegand_device.h

ethernet:
  use_address: west_warehouse_access_control
  type: LAN8720

mcarbonneaux

This is a working example on how to store CryptoKeys locally in your browser. We are able to save the objects, without serializing them. This means we can keep them not exportable (which might be more secure?? not sure what attack vectors this prevents).

To try out this example, first make sure you are in a browser that has support for async...await and indexedDB (latest chrome canary with chrome://flags "Enable Experimental Javascript" works). Load some page and copy and paste this code into the console. Then call encryptDataSaveKey(). This will create a private/public key pair and encrypted some random data with the private key. Then save both of them. Now reload the page, copy in the code, and run loadKeyDecryptData(). It will load the keys and encrypted data and decrypt it. You should see the same data logged both times.

mcarbonneaux

How to create a self-signed SSL Certificate with SubjectAltName(SAN)

After Chrome 58, self-signed certificate without SAN is not valid anymore.

Step 1: Generate a Private Key

openssl genrsa -des3 -out example.com.key 2048

Step 2: Generate a CSR (Certificate Signing Request)

mcarbonneaux

The newer versions of bash include a regex operator =~

Simple example

$ re='t(es)t'
$ [[ "test" =~ $re ]]
$ echo $?
0
$ echo ${BASH_REMATCH[1]}
es