cd /etc/ssl/private
root@dlp:/etc/ssl/private#
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: # set passphrase Verifying - Enter pass phrase for server.key: # confirm
# remove passphrase from private key
root@dlp:/etc/ssl/private#
openssl rsa -in server.key -out server.key
Enter pass phrase for server.key:
# passphrase
writing RSA key
root@dlp:/etc/ssl/private#
openssl req -new -days 3650 -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) [AU]:
JP
# country
State or Province Name (full name) [Some-State]:
Hiroshima
# state
Locality Name (eg, city) []:
Hiroshima
# city
Organization Name (eg, company) [Internet Widgits Pty Ltd]:
GTS
# company
Organizational Unit Name (eg, section) []:
Server World
# department
Common Name (e.g. server FQDN or YOUR name) []:
dlp.srv.world
# server's FQDN
Email Address []:
Please enter the following 'extra' attributes
xxx@srv.world
# email address
to be sent with your certificate request
A challenge password []:
An optional company name []:
root@dlp:/etc/ssl/private#
openssl x509 -in server.csr -out server.crt -req -signkey server.key -days 3650
Signature ok
subject=/C=JP/ST=Hiroshima/L=Hiroshima/O=GTS/OU=Server World/CN=dlp.srv.world/emailAddress=xxx@srv.world
Getting Private key
root@dlp:/etc/ssl/private#
chmod 400 server.*
ที่มา : https://www.server-world.info/en/note?os=Ubuntu_16.04&p=ssl
