Difference between revisions of "Be your own CA"

From BubbaWiki
Jump to navigation Jump to search
Line 1: Line 1:
= Be your own Certificate Authority<br> =
Why not be your own Certificate Authority&nbsp;!?<br>  


This how-to describes to create your own CA certificate and sign your own certificates.<br>  
This how-to describes how to generate your own CA certificate and generate and sign your own certificates.<br>  


<br>
== Generate a CA Certificate and Key  ==


== Create the CA Certificate and Key  ==
Become the root user<br>  
 
Become the root user<br>
<pre>su -
<pre>su -
mkdir -m 0755 CA CA/private CA/certs CA/newcerts CA/crl
mkdir -m 0755 CA CA/private CA/certs CA/newcerts CA/crl
cd CA
cd CA
cp /etc/ssl/openssl.cnf .
cp /etc/ssl/openssl.cnf .
chmod 600 index.txt serial openssl.cnf </pre>
chmod 600 index.txt serial openssl.cnf </pre>  
Modify the following parameters in the just copied file openssl.cnf<br>
Modify the following parameters in the just copied file openssl.cnf<br>  
<pre>default_md = sha256
<pre>default_md = sha256
default_bits = 2048
default_bits = 2048
dir = . # Where everything is kept
dir = . # Where everything is kept
certificate = $dir/certs/myca.crt # The CA certificate
certificate = $dir/certs/myca.crt # The CA certificate
private_key = $dir/private/myca.key # The private key</pre>
private_key = $dir/private/myca.key # The private key</pre>  
Create your CA certificate<br>
Generate your CA certificate<br>  
<pre>openssl req -config openssl.cnf -new -x509 -extensions v3_ca -keyout private/myca.key -out certs/myca.crt -days 1825</pre>
<pre>openssl req -config openssl.cnf -new -x509 -extensions v3_ca -keyout private/myca.key -out certs/myca.crt -days 1825</pre>  
Keep your password and key safe!<br>
Keep your password and key safe!<br>  
<pre>chmod 400 private/myca.key </pre>
<pre>chmod 400 private/myca.key </pre>  
== Generate a Certificate Request  ==
== Generate a Certificate Request  ==


Create your B3 server certificate. <br>
Generate your B3 server certificate. <br>  


Fill in your B3 server name when asked the question: Common Name (eg, YOUR name) []:<br>
Fill in your B3 server name when asked the question: Common Name (eg, YOUR name) []:<br>  
<pre>openssl req -config openssl.cnf -new -nodes -keyout private/server.key -out server.csr -days 365</pre>
<pre>openssl req -config openssl.cnf -new -nodes -keyout private/server.key -out server.csr -days 365</pre>  
Keep the key safe<br>
Keep the key safe<br>  
<pre>chmod 400 private/server.key</pre>
<pre>chmod 400 private/server.key</pre>  
== Sign the Certificate Request  ==
== Sign the Certificate Request  ==
<pre>openssl ca -config openssl.cnf -policy policy_anything -out certs/server.crt -infiles server.csr
<pre>openssl ca -config openssl.cnf -policy policy_anything -out certs/server.crt -infiles server.csr
rm server.csr</pre>
rm server.csr</pre>  
== Verify the certificate  ==
== Verify the certificate  ==
<pre>openssl x509 -subject -issuer -enddate -noout -in certs/server.crt
<pre>openssl x509 -subject -issuer -enddate -noout -in certs/server.crt
openssl verify -purpose sslserver -CAfile certs/myca.crt certs/server.crt</pre>
openssl verify -purpose sslserver -CAfile certs/myca.crt certs/server.crt</pre>  
== Bounce Apache  ==
== Bounce Apache  ==


Replace the old certifcates with your new certificates<br>
Replace the old certifcates with your new certificates<br>  
<pre>cp /etc/apache2/cacert.pem /etc/apache2/cacert.pem.orig
<pre>cp /etc/apache2/cacert.pem /etc/apache2/cacert.pem.orig
cp /etc/apache2/privkey.pem /etc/apache2/privkey.pem.orig
cp /etc/apache2/privkey.pem /etc/apache2/privkey.pem.orig


cp /root/CA/certs/server.crt /etc/apache2/cacert.pem
cp /root/CA/certs/server.crt /etc/apache2/cacert.pem
cp /root/CA/private/server.key /etc/apache2/privkey.pem</pre>
cp /root/CA/private/server.key /etc/apache2/privkey.pem</pre>  
Restart the Apache webserver<br>
Restart the Apache webserver<br>  
<pre>/etc/init.d/apache2 restart</pre>
<pre>/etc/init.d/apache2 restart</pre>  
== Importeer CA in browser  ==
== Importeer CA in browser  ==


Line 53: Line 51:
== References  ==
== References  ==


*http://openssl.org/
*http://openssl.org/  
*http://www.g-loaded.eu/2005/11/10/be-your-own-ca/
*http://www.g-loaded.eu/2005/11/10/be-your-own-ca/  
*http://www.eclectica.ca/howto/ssl-cert-howto.php<br>  
*http://www.eclectica.ca/howto/ssl-cert-howto.php<br>  
*http://www.top20toolbar.com/misc/codesigncert.htm<br>
*http://www.top20toolbar.com/misc/codesigncert.htm<br>

Revision as of 06:50, 17 August 2011

Why not be your own Certificate Authority !?

This how-to describes how to generate your own CA certificate and generate and sign your own certificates.

Generate a CA Certificate and Key

Become the root user

su -
mkdir -m 0755 CA CA/private CA/certs CA/newcerts CA/crl
cd CA
cp /etc/ssl/openssl.cnf .
chmod 600 index.txt serial openssl.cnf

Modify the following parameters in the just copied file openssl.cnf

default_md = sha256
default_bits = 2048
dir = . # Where everything is kept
certificate = $dir/certs/myca.crt # The CA certificate
private_key = $dir/private/myca.key # The private key

Generate your CA certificate

openssl req -config openssl.cnf -new -x509 -extensions v3_ca -keyout private/myca.key -out certs/myca.crt -days 1825

Keep your password and key safe!

chmod 400 private/myca.key

Generate a Certificate Request

Generate your B3 server certificate.

Fill in your B3 server name when asked the question: Common Name (eg, YOUR name) []:

openssl req -config openssl.cnf -new -nodes -keyout private/server.key -out server.csr -days 365

Keep the key safe

chmod 400 private/server.key

Sign the Certificate Request

openssl ca -config openssl.cnf -policy policy_anything -out certs/server.crt -infiles server.csr
rm server.csr

Verify the certificate

openssl x509 -subject -issuer -enddate -noout -in certs/server.crt
openssl verify -purpose sslserver -CAfile certs/myca.crt certs/server.crt

Bounce Apache

Replace the old certifcates with your new certificates

cp /etc/apache2/cacert.pem /etc/apache2/cacert.pem.orig
cp /etc/apache2/privkey.pem /etc/apache2/privkey.pem.orig

cp /root/CA/certs/server.crt /etc/apache2/cacert.pem
cp /root/CA/private/server.key /etc/apache2/privkey.pem

Restart the Apache webserver

/etc/init.d/apache2 restart

Importeer CA in browser

Import the CA certificate, this is file /root/CA/certs/myca.crt, into the browser of your choice.

References

Retrieved from "https://wiki.excito.com/index.php?title=Be_your_own_CA&oldid=1059"