Certificate on bramp.net https://blog.bramp.net/ Recent content in Certificate on bramp.net Hugo -- gohugo.io en-GB Sat, 16 Aug 2014 00:00:00 +0000 Grabbing a Certificate with OpenSSL and importing it into Java https://blog.bramp.net/post/2014/08/16/grabbing-a-certificate-with-openssl-and-importing-it-into-java/ Sat, 16 Aug 2014 00:00:00 +0000 https://blog.bramp.net/post/2014/08/16/grabbing-a-certificate-with-openssl-and-importing-it-into-java/

Occasionally I have to grab a SSL cert from a server, and turn it into something that Java can use. Here are the quick instructions

# Store the cert issued by a web server
openssl s_client -showcerts -connect www.google.com:443 > www.google.com.pem

# Convert it from PEM format to DER format
openssl x509 -in www.google.com.pem -inform PEM -out www.google.com.der -outform DER

# Import it into your keystore
sudo /usr/java6/bin/keytool -import -alias www.google.com -file www.google.com.der -keystore /usr/java6/jre/lib/security/cacerts

# The keystore password is by default "changeit"