SSL
Autorité de certification
Création de la clé privée
- On se place dans le dossier /etc/ssl/private qui contient les clés et certificats privées :
- On génère la clé privée :
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sudo openssl genrsa -out ca.key 2048
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Cette clé va nous permettre de signer nos propres certificats.
Création du certificat auto-signé
- On lance la création de certificat auto-signé :
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openssl req -new -x509 -nodes -days 365 -key ca.key -out ca.crt
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
- - - --
Country Name (2 letter code) [AU]:FR
State or Province Name (full name) [Some-State]:Paris
Locality Name (eg, city) []:Paris
Organization Name (eg, company) [Internet Widgits Pty Ltd]:NCad Network
Organizational Unit Name (eg, section) []:Autorité de certification
Common Name (e.g. server FQDN or YOUR name) []:10.0.0.47
Email Address []:tech@ncad.fr
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Certificat serveur
- On génère la clé privée :
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sudo openssl genrsa -out mysql.key 2048
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- On génère un fichier de demande de signature de certificat :
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sudo openssl req -new -key mysql.key -out mysql.csr
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
- - - - -
Country Name (2 letter code) [AU]:FR
State or Province Name (full name) [Some-State]:Paris
Locality Name (eg, city) []:Paris
Organization Name (eg, company) [Internet Widgits Pty Ltd]:NCad Network
Organizational Unit Name (eg, section) []:Intranet Goulouxiou
Common Name (e.g. server FQDN or YOUR name) []:10.0.0.47
Email Address []:tech@ncad.fr
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:Le soleil est noir.
An optional company name []:NCad Network
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- On signe notre certificat à l'aide du certificat auto-signé de notre autorité de certification (précédemment créée) :
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openssl x509 -req -in mysql.csr -days 365 -CA ca.crt -CAkey ca.key -set_serial 01 -out mysql.crt
Signature ok
subject=/C=FR/ST=Paris/L=Paris/O=NCad Network/OU=Intranet
Goulouxiou/CN=10.0.0.47/emailAddress=tech@ncad.fr
Getting CA Private Key
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COnfiguration du serveur MySQL
- On déplace les certificats crées dans /etc/ssl/private vers /etc/mysql/ssl
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sudo mkdir -p /etc/mysql/ssl
cp /etc/ssl/private/ca.* /etc/mysql/ssl
cp /etc/ssl/private/mysql.* /etc/mysql/ssl
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- On applique les permissions et droits mysql sur les certificats :
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sudo chown mysql:mysql /etc/mysql/ssl -R
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- On édite le fichier /etc/apparmor.d/usr.sbin.mysqld et on y insère les éléments suivants :
- On édite le fichier de configuration /etc/mysql/my.cf et on y insère dans la section [] :
- Dans le même fichier, on insère les éléments suivants dans la section [] :
Validation
mysql> show variables like "%ssl%";
+---------------+--------------------------+
| Variable_name | Value |
+---------------+--------------------------+
| have_openssl | YES |
| have_ssl | YES |
| ssl_ca | /etc/mysq/ssl/ca.crt |
| ssl_capath | |
| ssl_cert | /etc/mysql/ssl/mysql.crt |
| ssl_cipher | |
| ssl_key | /etc/mysql/ssl/mysql.key |
+---------------+--------------------------+
7 rows in set (0.02 sec)
mysql> show status like 'Ssl_cipher';
+---------------+--------------------+
| Variable_name | Value |
+---------------+--------------------+
| Ssl_cipher | DHE-RSA-AES256-SHA |
+---------------+--------------------+
1 row in set (0.01 sec)