To become a real CA, you need to get your root certificate on all the devices in the world. server FQDN or YOUR name) :Delicious BrainsД®mail Address should now have two files: mењњA.key (your private key) and mењњA.pem (your root certificate). Organizational Unit Name (eg, section) :Д¬ommon Name (e.g. Organization Name (eg, company) :Delicious Brains Inc State or Province Name (full name) :Nova Scotia If you enter '.', the field will be left blank. There are quite a few fields but you can leave some blankДЇor some fields there will be a default value, What you are about to enter is what is called a Distinguished Name or a DN.

You are about to be asked to enter information that will be incorporated ThatвЂ™s really the only thing that matters. I suggest making the Common Name something that youвЂ™ll recognize as your root certificate in a list of other certificates. They show up when looking at the certificate, which you will almost never do.

The answers to those questions arenвЂ™t that important. You will be prompted for the passphrase of your private key (that you just chose) and a bunch of questions. Then we generate a root certificate: openssl req -x509 -new -nodes -key mењњA.key -sha256 -days 1825 -out mењњA.pem Verifying - Enter pass phrase for mењњA.key: Output should look like this: Generating RSA private key, 2048 bit long modulus The pass phrase will prevent anyone who gets your private key from generating a root certificate of their own.

You will be prompted for a passphrase, which I recommend not skipping and keeping safe. First, we generate our private key: openssl genrsa -des3 -out mењњA.key 2048 ItвЂ™s kind of ridiculous how easy it is to generate the files needed to become a certificate authority. We then add the root certificate to all the devices we own just once, and then all certificates that we generate and sign will be inherently trusted. But we can generate our own root certificate and private key. ThatвЂ™s why when you generate a self-signed certificate the browser doesnвЂ™t trust it. All browsers have a copy (or access a copy from the operating system) of VerisignвЂ™s root certificate, so the browser can verify that your certificate was signed by a trusted CA. To request an SSL certificate from a CA like Verisign or GoDaddy, you send them a Certificate Signing Request (CSR), and they give you a certificate in return that they signed using their root certificate and private key. The modern approach is to become your own Certificate Authority (CA)! How It Works Unfortunately, thatвЂ™s no longer possible. MAMP Pro does this for you and was my go-to for years. The workaround used to be creating a self-signed certificate and using that. If youвЂ™ve ever tried to run an HTTPS site locally, youвЂ™ve probably seen something like the following in Chrome: However, trying to get an SSL certificate working with your local server kind of sucks if youвЂ™re not using a tool that handles it for you like Valet. Running HTTP when your production site is HTTPS-only is definitely an unnecessary risk. When it doesnвЂ™t, you invite more issues showing up in production that didnвЂ™t show up in dev. You definitely want your dev environment to mirror production as closely as possible. The production site is an Ubuntu server running on Linode with an almost identical configuration. For example, my dev environment for this site () runs as an Ubuntu server in a VMware virtual machine (VM) on his Mac. Why not just use regular HTTP locally? Because if your production site is HTTPS-only and youвЂ™re developing locally on regular HTTP, your dev and production environments are not as similar as they could be. In this article, weвЂ™ll walk through creating your own Certificate Authority for your local servers so that you can run HTTPS sites locally without issue. Even if you do manage to wrestle self-signed certificates into submission, you still end up with browser privacy errors. Setting up HTTPS locally can be tricky business.

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