openssl certificate

openssl创建证书

1. openssl创建证书

   root@192:~# mkdir -p /opt/nginx/ssl
   root@192:~# cd /opt/nginx/ssl/
   root@192:/opt/nginx/ssl# openssl req -newkey rsa:4096 -nodes -sha256 -keyout domain.key -x509 -days 365 -out domain.crt
   Generating a 4096 bit RSA private key
   ........++
   .........................................................................................................................................................................................................................................++
   writing new private key to \'domain.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]:CN
   State or Province Name (full name) [Some-State]:BJ
   Locality Name (eg, city) []:bj
   Organization Name (eg, company) [Internet Widgits Pty Ltd]:zhonghui
   Organizational Unit Name (eg, section) []:
   Common Name (e.g. server FQDN or YOUR name) []:d.hub.io
   Email Address []:pengliu@brandwisdom.cn

2. openssl 将证书crt转换为cer

   root@192:~# openssl x509 -in domain.crt -out domain.cer -outform der