roelds

# Git 2.42+
mkdir sha256
cd sha256
git init --object-format=sha256
git config extensions.preciousObjects true
git branch -m dev
dd if=/dev/zero bs=$((1024*1024)) count=$((5*1024)) | git hash-object --stdin --literally

# verify result :
dc18ca621300c8d3cfa505a275641ebab00de189859e022a975056882d313e64

roelds

# more efficient than base64
$base85lib =
@"
using System;
using System.Text;
using System.IO;
using System.Linq;

namespace BaseN {
    /// <summary>

roelds

# my format
get-date -format "yyyy_MM_dd_HH_mm_ss"

# epoch in dec
(Get-Date).ToUniversalTime().Subtract((Get-Date "01/01/1970")).TotalSeconds

# alt format
gcim Win32_LocalTime | select Year,Quarter,Month,WeekInMonth,DayOfWeek | fl

roelds

:: put below in your config, usually for Win64 : C:\Program Files\Common Files\SSL\openssl.cnf

[provider_sect]
default = default_sect
oqsprovider = oqsprovider_sect
[default_sect]
activate = 1
[oqsprovider_sect]
activate = 1

roelds

#Requires RunAsAdministrator
# put above comment at top of script to prevent running of script if it was not run as admin

# or quietly check for script run as admin:
([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")

roelds

# will prompt for passphrase on stdin
openssl genpkey -out skey.pem -verbose -pass stdin -aes-256-cbc -algorithm ed448

openssl ec -in skey.pem -pubout -out pub.pem

# create hash
openssl shake256 -xoflen 64 -out dgst thefile

openssl pkeyutl -sign -inkey skey.pem -rawin -in dgst -out dgst.sig
openssl pkeyutl -verify -rawin -inkey pub.pem -pubin -sigfile dgst.sig -in dgst

roelds

# updated for Win11
# List privileged services that don't come with Windows 11

# Exclusion List for Win11 built in
$exclusion = @('ALG', 'AppVClient', 'COMSysApp', 'diagnosticshub.standardcollector.service',
           'edgeupdate', 'edgeupdatem', 'gcs', 'MicrosoftEdgeElevationService', 'MSDTC',
           'msiserver', 'NetTcpPortSharing', 'perceptionsimulation', 'PerfHost', 'RpcLocator', 'SecurityHealthService',
           'Sense', 'SensorDataService', 'SgrmBroker', 'SNMPTrap', 'spectrum', 'Spooler', 'sppsvc', 'TieringEngineService',
           'TrustedInstaller', 'UevAgentService', 'uhssvc', 'vds', 'VSS', 'wbengine', 'WdNisSvc', 'WinDefend', 'wmiApSrv',
           'WMPNetworkSvc', 'WSearch', 'WslService')

roelds

#!/bin/bash
if command -v whois >/dev/null 2>&1 ; then echo "whois ok..." ; else echo "install whois!" && exit ; fi

# verified on latest Ubuntu server cloudimg
############################################################################################################
# ----------------------------------------------------------------------
# ASN/IPv4/Prefix lookup tool. Uses Team Cymru's whois service for data.
# ----------------------------------------------------------------------
# example usage:
#  asn <ASnumber>      -- to lookup matching ASN data. Supports "as123" and "123" formats (case insensitive)

roelds

# assumes new Debian Testing VM, for purpose of compiling, running below as root
# uses most libs already available from apt, only compiles lib ntbtls

lsb_release -a
uname -a

wget https://gnupg.org/signature_key.asc
gpg --import signature_key.asc
gpg -k
wget https://www.gnupg.org/signature_key.html

roelds

HowTo build / make latest brotli Windows 11 binary

I couldn't find latest brotli binary for Win64 / x64, so here is how to compile it on Windows, for Windows: https://github.com/google/brotli

Will use this repo later: https://github.com/Microsoft/vcpkg

Prerequisites