I have a Java application accessing a service that uses a StartCom SSL certificate. For this to work, I need to add the StartCom CA certs to Java's truststore, because they're not in there by default yet. I've succesfully done that on linux using these commands
sudo keytool -import -trustcacerts -keystore $JAVA_HOME/jre/lib/security/cacerts -storepass changeit -noprompt -alias startcom.ca -file ca.crt
sudo keytool -import -trustcacerts -keystore $JAVA_HOME/jre/lib/security/cacerts -storepass changeit -noprompt -alias startcom.ca.sub.class1 -file sub.class1.server.ca.crt
sudo keytool -import -trustcacerts -keystore $JAVA_HOME/jre/lib/security/cacerts -storepass changeit -noprompt -alias startcom.ca.sub.class2 -file sub.class2.server.ca.crt
sudo keytool -import -trustcacerts -keystore $JAVA_HOME/jre/lib/security/cacerts -storepass changeit -noprompt -alias startcom.ca.sub.class3 -file sub.class3.server.ca.crt
sudo keytool -import -trustcacerts -keystore $JAVA_HOME/jre/lib/security/cacerts -storepass changeit -noprompt -alias startcom.ca.sub.class4 -file sub.class4.server.ca.crt
(From this script)
The same command (adapted appropriately) doesn't work on Windows however. I get:
keytool error: java.lang.RuntimeException: Usage error, trustcacerts is not a legal command
How to make it work?
It was a simple typo. In converting the command I forgot a dash before "trustcacerts". :(
On Mac OS X Mavericks 10.9 I did this:
I always make a tmp directory that I delete later, but you don’t have to:
mkdir ~/tmp
cd ~/tmp
Then download the certs:
curl http://www.startssl.com/certs/ca.crt -O
curl http://www.startssl.com/certs/sub.class1.server.ca.crt -O
curl http://www.startssl.com/certs/sub.class2.server.ca.crt -O
curl http://www.startssl.com/certs/sub.class3.server.ca.crt -O
curl http://www.startssl.com/certs/sub.class4.server.ca.crt -O
Get your Java home:
$ /usr/libexec/java_home
/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home
Use keytool to install it:
sudo keytool -import -trustcacerts -keystore /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/securitycacerts -storepass changeit -noprompt -alias startcom.ca -file ca.crt
sudo keytool -import -trustcacerts -keystore /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/security/cacerts -storepass changeit -noprompt -alias startcom.ca.sub.class1 -file sub.class1.server.ca.crt
sudo keytool -import -trustcacerts -keystore /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/securitycacerts -storepass changeit -noprompt -alias startcom.ca.sub.class2 -file sub.class2.server.ca.crt
sudo keytool -import -trustcacerts -keystore /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/securitycacerts -storepass changeit -noprompt -alias startcom.ca.sub.class3 -file sub.class3.server.ca.crt
sudo keytool -import -trustcacerts -keystore /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre/lib/securitycacerts -storepass changeit -noprompt -alias startcom.ca.sub.class4 -file sub.class4.server.ca.crt
Remove -trustcacerts
Yes, -trustcacerts is the right syntax.
But for the linked script to work under Cygwin you need to remove sudo from all keytool lines - sudo is unavailable in Cygwin.
来源：https://stackoverflow.com/questions/4302686/import-startcom-ca-certificates-in-windows-jre