Kohei Nozaki's blog 

Obtaining a SSL certification

Posted on Friday Feb 06, 2015 at 06:43PM in Technology

SSL certification are cheap these days. even there is free one is available. you can obtain personal one for around $10 per one year.

What you need

  • Payment method (PayPal account, a credit card…​ usable method may vary depending on seller)

  • An administrative mail address in the domain which the certification will be issued to (e.g. postmaster@example.org)

Common procedure is following:

Create a random seed

openssl md5 /var/log/*.log* > rand.dat

Create a private key

openssl genrsa -rand rand.dat -des3 2048 > key.pem

Create CSR from private key

openssl req -new -key key.pem -out csr.pem

I entered following:

Country Name (2 letter code) [AU]:JP
State or Province Name (full name) [Some-State]:.
Locality Name (eg, city) []:.
Organization Name (eg, company) [Internet Widgits Pty Ltd]:.
Organizational Unit Name (eg, section) []:.
Common Name (e.g. server FQDN or YOUR name) []:www.nailedtothex.org
Email Address []:postmaster@MYDOMAIN.example.org

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

Send CSR to certification authority (SSL certification seller)

The seller will send you the certification. now you need to apply certification to your servers (HTTP, SMTP, IMAP…​ etc).

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