Original Post from here

Preparation

1. Check XAMPP SSL config

Open /Applications/XAMPP/xamppfiles/etc/httpd.conf and make sure your settings are the same as below:

LoadModule socache_shmcb_module lib/httpd/modules/mod_socache_shmcb.so
LoadModule ssl_module modules/mod_ssl.so

<IfModule ssl_module>
    <IfDefine SSL>
        Include etc/extra/httpd-ssl.conf
    </IfDefine>
</IfModule>

Test SSL config with this command:

sudo /Applications/XAMPP/xamppfiles/xampp enablessl

2. Backup httpd-ssl.conf

• Go to: /Applications/XAMPP/xamppfiles/etc/extra
• Copy httpd-ssl.conf & paste as httpd-ssl.conf.bak

3. Edit httpd-ssl.conf

• Open /Applications/XAMPP/xamppfiles/etc/extra/httpd-ssl.conf
• Change default port from 8443 to 443

#Listen 8443
Listen 443

• Find this line and remove everything below it

## SSL Virtual Host Context

Setup HTTPS/SSL localhost

Open Terminal

4. Create SSL folder to store SSL files

cd
/Applications/XAMPP/xamppfiles/etc/
mkdir ssl
cd ssl

5. Create SSL CSR & private key

You can use any file name here (just replace localhost)

openssl req -new -newkey rsa:2048 -nodes -keyout localhost.key -out localhost.csr

Enter info as below. Note: change localhost to your localhost domain name (ex: www.domain.name)

Country Name (2 letter code) [AU]:VN
State or Province Name (full name) [Some-State]:HCM
Locality Name (eg, city) []:HCM
Organization Name (eg, company) [Internet Widgits Pty Ltd]:VN
Organizational Unit Name (eg, section) []:VN
Common Name (e.g. server FQDN or YOUR name) []:<strong>localhost</strong>
Email Address []:abc@gmail.com

There are 2 more information may be asked:

• A challenge password
• An optional company name

Leave this information BLANK (just Enter, no need to input anything)

6. Create .ext file

touch localhost.ext

Copy & paste below content to v3.ext file

Note: change localhost to your localhost domain name

authorityKeyIdentifier=keyid,issuer
basicConstraints=CA:FALSE
keyUsage = digitalSignature, nonRepudiation, keyEncipherment, dataEncipherment
subjectAltName = @alt_names

[alt_names]
DNS.1 = localhost

7. Create SSL CRT

openssl x509 -req -sha256 -extfile localhost.ext -days 3650 -in localhost.csr -signkey localhost.key -out localhost.crt

8. Add SSL CRT to macOS Keychain

• Double click on localhost.crt on Finder
• Select Keychain: System then click Add

• Find & double click on localhost cert in Keychain Access
• Expand Trust, select When using this certificates: Always Trust

• Close the window and click Update Settings

9. Config SSL in XAMPP virtual host

Open /Applications/XAMPP/xamppfiles/etc/extra/httpd-vhosts.conf

Update your config:

from

<VirtualHost *:80>
	ServerName localhost
	DocumentRoot "/Applications/XAMPP/xamppfiles/htdocs"
</VirtualHost>

to

<VirtualHost *:443>
	ServerName localhost
	DocumentRoot "/Applications/XAMPP/xamppfiles/htdocs"

	SSLEngine on
	SSLCertificateFile "/Applications/XAMPP/xamppfiles/etc/ssl/localhost.crt"
	SSLCertificateKeyFile "/Applications/XAMPP/xamppfiles/etc/ssl/localhost.key"
</VirtualHost>

10. Open Chrome and access https://localhost.