Free SSL for machines in your private network

If you are running servers in your private network that need SSL, you can use LetsEncrypt and Certbot to automatically obtain and renew certificates for free. Even if your machines are not accessible from the internet. What you need: A static IP in your internal network for the server, like 192.168.1.2 Own a domain like […]

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A real world example of digital signature checking

In this post we will see exactly how we can check if a SSL certificate hasn’t been tampered with. We will use https://google.com as an example and we’re manually going to check that the certificate’s digital signature is valid. Other important steps such as traversing the entire chain is beyond the scope of this simple […]

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