Apache

Zertifikat generieren

Defaultwerte vernünftig anpassen

Country & Co auf für einen selbst passende Werte anpassen:

# vi /etc/ssl/openssl.cnf

Schlüssel generieren

# openssl ecparam -genkey -name secp256r1 | openssl ec -aes256 -out server.de.ec-key

Zertifikat ausstellen

# openssl req -new -x509 -sha256 -key server.de.ec-key -out server.de-wildcard.pem -days 1825 -nodes

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) [DE]:
State or Province Name (full name) [Hamburg]:
Locality Name (eg, city) [Hamburg]:
Organization Name (eg, company) [My Site]:
Organizational Unit Name (eg, section) [Sub]:
Common Name (e.g. server FQDN or YOUR name) []:*.server.de
Email Address [ssl@server.de]:

Zertifikat ansehen

# openssl x509 -text -noout -in server.de-wildcard.pem
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number: ... (0x...)
    Signature Algorithm: ecdsa-with-SHA256
        Issuer: C=DE, ST=Hamburg, L=Hamburg, O=My Site, OU=Sub, CN=*.server.de/emailAddress=ssl@server.de
        Validity
            Not Before: Apr 16 09:35:02 2015 GMT
            Not After : Apr 14 09:35:02 2020 GMT
        Subject: C=DE, ST=Hamburg, L=Hamburg, O=My Site, OU=Sub, CN=*.server.de/emailAddress=ssl@server.de
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (256 bit)
                pub:
                    ...
                ASN1 OID: prime256v1
        X509v3 extensions:
            X509v3 Subject Key Identifier: 
                ...
            X509v3 Authority Key Identifier: 
                keyid:...

            X509v3 Basic Constraints: 
                CA:TRUE
    Signature Algorithm: ecdsa-with-SHA256
         ...

Apache konfigurieren

<VirtualHost ssl.server.de:443>
  ...  
  SSLEngine On
  SSLProtocol all -SSLv2 -SSLv3
  SSLCompression off
  SSLHonorCipherOrder On
  SSLCipherSuite EECDH+AESGCM:EECDH+AES:EDH+AES
  SSLCertificateFile    /etc/apache2/ssl/server.de-wildcard.pem
  SSLCertificateKeyFile /etc/apache2/ssl/server.de.ec-key
  SSLOptions +FakeBasicAuth +ExportCertData +StrictRequire
</VirtualHost>