nginxで自己認証証明書(おれおれ証明書)を設定

証明書の作成

秘密鍵を作成

# openssl genrsa -des3 -out server.key 2048
Generating RSA private key, 2048 bit long modulus
.........................+++
.......................................+++
e is 65537 (0x10001)
Enter pass phrase for server.key:
Verifying - Enter pass phrase for server.key:

パスフレーズは後で外すので適当に

証明書署名要求を作成

# openssl req -new -key server.key -out server.csr
Enter pass phrase for server.key:
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]:JP
State or Province Name (full name) [Some-State]:Tokyo
Locality Name (eg, city) []:Shinjyuku
Organization Name (eg, company) [Internet Widgits Pty Ltd]:xxx .inc
Organizational Unit Name (eg, section) []:
Common Name (e.g. server FQDN or YOUR name) []:xxx.com
Email Address []:xxx@gmail.com

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:

Common Nameとhost名を一致させる事、curlでテストする際に以下のエラーが出てしまいます。
ただ、他の環境だと平気かもしれないです。

curl: (51) SSL: certificate subject name 'xxx.com' does not match target host name 'yyy.com'

秘密鍵のパスフレーズを外す

openssl rsa -in server.key -out server.key

証明書を作成

openssl x509 -req -days 36500 -in server.csr -signkey server.key -out server.crt

nginx設定

serverに以下を追加

        listen 443 ssl;
        ssl_certificate /path/to/server.crt;
        ssl_certificate_key /path/to/server.key;

curlで確認

適当なマシンにserver.crtを転送し

curl --cacert ./server.crt https://xxx.com