付録B SSL/TLSサーバー証明書の作成例

# openssl genrsa -aes128 -out server.key 2048
Generating RSA private key, 2048 bit long modulus
......++++++
...................++++++
e is 65537 (0x10001)
Enter pass phrase for server.key: パスフレーズ<RETURN>
Verifying - Enter pass phrase for server.key: パスフレーズ<RETURN>
      
# openssl req -new -key server.key -sha256 -out server.csr
Enter pass phrase for server.key: パスフレーズ<RETURN>
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]: <RETURN>
State or Province Name (full name) []: <RETURN>
Locality Name (eg, city) [Default City]: <RETURN>
Organization Name (eg, company) [Default Company Ltd]: <RETURN>
Organizational Unit Name (eg, section) []: <RETURN>
Common Name (eg, your name or your server's hostname) []: myhost.example.com<RETURN>
Email Address []: <RETURN>
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []: <RETURN>
An optional company name []: <RETURN>

# vi san.txt
subjectAltName = DNS: myhost.example.com, DNS: *.myhost.example.com

# openssl x509 -in server.csr -days 365 -req -signkey server.key -sha256 -out server.crt -extfile san.txt
Signature ok
subject=/C=JP/ST=JP/L=JP/O=JP/OU=JP/CN=tst
Getting Private key
Enter pass phrase for server.key: パスフレーズ<RETURN>
      
# mv server.key server.key.back

# openssl rsa -in server.key.back -out server.key
Enter pass phrase for server.key.back: パスフレーズ<RETURN>
writing RSA key