CentOS Stream9に自己署名SSL 証明書を作成する方法
環境
OSバージョンの確認
# cat /etc/redhat-release CentOS Stream release 9
自己署名の独自SSL証明書作成方法
1.秘密鍵のファイル名の作成
# cd /etc/pki/tls/certs # openssl genrsa -aes128 2048 > server.key Enter PEM pass phrase: # サーバ用パスワード入力 Verifying - Enter PEM pass phrase: # 再入力
2.秘密鍵からパスフレーズを削除します
# openssl rsa -in server.key -out server.key Enter pass phrase for server.key: # サーバ用パスワード入力 writing RSA key
3.サーバ証明書のファイル名の作成
# openssl req -utf8 -new -key server.key -out server.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) [XX]:JP # 国コード State or Province Name (full name) []:Tokyo # 都道府県名 Locality Name (eg, city) [Default City]:Tokyo # 市町村名 Organization Name (eg, company) [Default Company Ltd]:arkgame # 団体名または会社名 Organizational Unit Name (eg, section) []:arkgame.com # 部署名 Common Name (eg, your name or your server's hostname) []:arkgame.com # FQDNまたは本装置のIPアドレス Email Address []:user@arkgame.com Please enter the following 'extra' attributes to be sent with your certificate request A challenge password []: An optional company name []:
4.有効期限が 10 年の自己署名証明書を作成します
# openssl x509 -in server.csr -out server.crt -req -signkey server.key -days 3650
ファイルの権限を付与します
# chmod 600 server.key
証明書を確認します
# ll server.* -rw-r--r--. 1 root root 1334 6月 9 06:07 server.crt -rw-r--r--. 1 root root 1062 6月 9 06:03 server.csr -rw-------. 1 root root 1704 6月 9 05:58 server.key