Generating self-signed certificate on windows

self-signed-certificate.ps1

$url = "https://github.com/IndySockets/OpenSSL-Binaries/raw/master/openssl-1.0.2s-x64_86-win64.zip"
$zipPath = "$PSScriptRoot\openssl.zip"
$openSslPath = "$PSScriptRoot\openssl"
$openSsl = "$($openSslPath)\openssl.exe"

Invoke-WebRequest -Uri $url -OutFile $zipPath
Expand-Archive $zipPath -DestinationPath $openSslPath

&$openSsl genrsa -out private.key 4096
&$openSsl req -new -sha256 -out private.csr -key private.key -config ssl.conf
&$openSsl req -text -noout -in private.csr
&$openSsl x509 -req -days 3650 -in private.csr -signkey private.key -out private.crt -extensions req_ext -extfile ssl.conf

ssl.conf

[req]
default_bits       = 4096
distinguished_name = req_distinguished_name
req_extensions     = req_ext
prompt = no

[req_distinguished_name]
countryName                 = AT
stateOrProvinceName         = Austria
localityName                = Vienna
organizationName            = MyCompany
commonName                  = localhost

[req_ext]
subjectAltName = @alt_names

[alt_names]
DNS.1   = localhost
#DNS.2   = another-website.dev