How to store and load keys using java.security.KeyStore class

Question

After creating secret keys, how do I store them using the Keystore class' methods and how do I load the keys?

Answer 1

Storing:

KeyStore ks = KeyStore.getInstance("JKS"); ks.setKeyEntry("keyAlias", key, passwordForKeyCharArray, certChain); OutputStream writeStream = new FileOutputStream(filePathToStore); ks.store(writeStream, keystorePasswordCharArray); writeStream.close(); 

Note thet certChain might be null, unless you are passing PrivateKey

Loading:

KeyStore ks = KeyStore.getInstance("JKS"); InputStream readStream = new FileInputStream(filePathToStore); ks.load(readStream, keystorePasswordCharArray); Key key = ks.getKey("keyAlias", passwordForKeyCharArray); readStream.close(); 

Read the javadocs

EDIT:

Note that if you are storing a SecretKey or using any part of the SunJCE provider (Java Cryptography Extension), you will need to set your KeyStore type to JCEKS.

KeyStore ks = KeyStore.getInstance("JCEKS");