Generate 2048 Bit CSR for godaddy.

openssl req -nodes -newkey rsa:4096 -sha512 -keyout www.xyz.com.key -out www.xyz.com.csr

Above command will not ask you for password. Which is not advisable on apache startup as you need to be present to supply password.
If you need to have than simply remove “-nodes” from your command and you have password.

To check if certificate and key is matching “Match the MODULUS” in out of following command

openssl rsa -noout -modulus -in <*.key>
openssl x509 -noout -modulus -in <*.crt>

Read CSR using following command

openssl req -text -in <*.csr>

Find Expiring and Issue date for Certificate

openssl x509 -noout -in <*.crt> -dates

How to enable strong SSL in apache. This also help to pass PCI Compliance.

| httpd.conf

SSLEngine On
 
SSLCertificateFile /srv/www/conf/<*.crt>
SSLCertificateKeyFile /srv/www/conf/<*.key>
SSLCertificateChainFile /srv/www/conf/gd_intermediate_bundle.crt
SSLCACertificateFile /srv/www/conf/*.ca-bundle
 
SSLProtocol -all +SSLv3 +TLSv1
SSLCipherSuite SSLv3:+HIGH:+MEDIUM:!SSLv2:!LOW:!EXP:!aNULL:@STRENGTH
--OR--
SSLCipherSuite +HIGH:+MEDIUM:!SSLv2:RC4+RSA:!ADH:!LOW:!EXP:!aNULL:!cNULL:@STRENGTH
--OR--
SSLCipherSuite SSLv3:+HIGH:+MEDIUM:!SSLv2:!ADH:!LOW:!EXP:!aNULL:!eNULL:@STRENGTH

Print all available high ciphers.

openssl ciphers HIGH

Test SSL Server

Root: thawte Primary Root CA
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
 
 
 
Intermediate: Thawte DV SSL CA
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

SSL123 CA Bundle (1024)
SSL123 CA Bundle (2048)
Instruction for other Certificates

Server Certificates

CA Bundle

openssl genrsa -des3 -out www.k2patel.com.key 4096

openssl req -new -key www.k2patel.com.key -out www.k2patel.com.csr

This is optional only require if you provide password during CSR Generation.

mv www.k2patel.com.key www.k2patel.com.key.pass
openssl rsa -in www.k2patel.com.key.pass -out www.k2patel.com.csr

openssl x509 -req -days 365 -in www.k2patel.com.csr -signkey www.k2patel.com.key -out www.k2patel.com.crt

Wildcard Certificate is nothing diff. in mechanism except how much you pay.
Please read following information before you dive in.

• While creating wildcard certificate you need to use “*” as Common Name:
  • e.g. *.k2patel.in
• You can place wildcard certificate on any number of server simply you always need KEY / CRT combination moved / copied.
  • so you can have multiple server with multiple sub-domain without issue.
• You do not need any special way to install / use it simply use as described above.