Satisfy Chromium/Chrome 58+ strict requirements for self-signed HTTPS/SSL cert

index.md

Satisfy Chromium/Chrome 58+ strict requirements for self-signed HTTPS/SSL cert

Create CA key and cert

openssl genrsa -out server_rootCA.key 2048
openssl req -x509 -new -nodes -key server_rootCA.key -sha256 -days 3650 -out server_rootCA.pem

Create server_rootCA.csr.cnf

openssl req -x509 -new -nodes -key server_rootCA.key -sha256 -days 3650 -out server_rootCA.pem

server_rootCA.csr.cnf

[req]
default_bits = 2048
prompt = no
default_md = sha256
distinguished_name = dn

[dn]
C=DE
ST=Berlin
L=NeuKoelln
O=Weisestrasse
OU=local_RootCA
[email protected]
CN = server.berlin
Create v3.ext configuration file

v3.ext

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

[alt_names]
DNS.1 = server.berlin
Create server key

openssl req -new -sha256 -nodes -out server.csr -newkey rsa:2048 -keyout server.key -config <( cat server_rootCA.csr.cnf )
Create server cert

openssl x509 -req -in server.csr -CA server_rootCA.pem -CAkey server_rootCA.key -CAcreateserial -out server.crt -days 3650 -sha256 -extfile v3.ext

Add cert and key to Apache2 site-file, HTTPS (port 443) section

SSLCertificateFile    /etc/apache2/ssl/server.crt
SSLCertificateKeyFile    /etc/apache2/ssl/server.key
Copy server_rootCA.pem from the server to your machine..

scp [email protected]:~/server_rootCA.pem .

Add cert to the browser

Chromium -> Setting -> (Advanced) Manage Certificates -> Import -> 'server_rootCA.pem'

YOU ARE ALL DONE!