keytool
A certificate management utility included with Java. tldr-pages
On several platforms
Several platforms
Create a keystore
keytool -genkeypair -v -keystore path/to/file.keystore -alias key_nameIdentifyChange a keystore password
keytool -storepasswd -keystore path/to/file.keystoreIdentifyChange a key's password inside a specific keystore
keytool -keypasswd -alias key_name -keystore path/to/file.keystoreIdentify