How do I programmatically create a new KeyStore?

java keystore
Καrτhικ picture Καrτhικ · Mar 15, 2011 · Viewed 76.5k times · Source

I'm trying to programmatically create a new keystore in Java. The following code:

KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
keyStore.setCertificateEntry("alias", cert);

throws a Uninitialized KeyStore exception.

Answer

Assaf Gamliel picture Assaf Gamliel · Dec 11, 2012

To create a new KeyStore in Java you first need to create the KeyStore file and then store it using the store(FileOutputStream, char[]) method:

KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());

char[] password = "some password".toCharArray();
ks.load(null, password);

// Store away the keystore.
FileOutputStream fos = new FileOutputStream("newKeyStoreFileName");
ks.store(fos, password);
fos.close();

I hope this helps, you can see more info here.

Related questions

How to import a .cer certificate into a java keystore?

During the development of a Java webservice client I ran into a problem. Authentication for the webservice is using a client certificate, a username and a password. The client certificate I received from the company behind the webservice is in .…

Read More
How to check certificate name and alias in keystore files?

I have a bunch of .keystore files and need to find one with specific CN and alias. Is there a way to do it with keytool, jarsigner or some other tool? I found a way to check if specific keystore …

Read More
java SSL and cert keystore

How does my java program know where my keystore containing the certificate is? Or alternatively how do I tell my java program where to look for the keystore? After specifying the keystore in some way, how to specify the certificate …

Read More