Is it possible to extract a certificate chain?

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# 1  
Old 08-24-2011
Is it possible to extract a certificate chain?

Hi all!

I wanted to look at the key length of a certificate chain we have. When I do the conventional export command using keytool I will only get the end user cert.

keytool -export -alias aliasname -file filename.cer -keystore keystorename

The above code will only give me the end user (the alias) without the intermediate and root CA after I convert the above binary cert to pem format.

Is there anyway to extract the entire certificate chain?
I've tried keytool and openssl but I did not find anything that would allow me to extract a certificate chain from a keystore.

# 2  
Old 08-25-2011
If you are currently using the certificate on a server, try
openssl s_client -showcerts -connect

# 3  
Old 08-25-2011
Thanks fpmurphy!

Worked like a charm Smilie (on my webserver)
I was wondering if it's possible to view a certificate chain from a keystore?

I was trying to find a keystore option within openssl but no luck yet.

I will update this thread if I find anything! Any suggestions would be greatly appreciated!

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