How Do I Configure Keystore Location and Properties for SSL/TLS in Java?

Identifying the Keystore Location in Java Programs for SSL and Certificate Authentication

When authenticating a server to a client using SSL, a Java program requires access to a keystore containing the necessary certificates and private keys. The program must be able to identify the location of this keystore.

Specifying the Keystore Location:

Java SSL properties are configured at the JVM level through system properties. To specify the keystore location, set the javax.net.ssl.keyStore property to the path of the keystore file.

Specifying the Keystore Password:

Secure access to the keystore requires a password. Set the javax.net.ssl.keyStorePassword property to the password for unlocking the keystore file.

Choosing a Certificate for Authentication:

Once the keystore is specified, the program must select the certificate to use for server authentication. This is typically achieved by setting the following system properties:

• javax.net.ssl.keyAlias: Specify the alias of the certificate to be used.
• javax.net.ssl.protocol: Select the SSL/TLS protocol to be used (e.g., "TLSv1.2").

Additional SSL Properties:

In addition to keystore and certificate settings, several other system properties can be used to configure SSL behavior:

• javax.net.ssl.trustStore: Location of the truststore containing trusted CA certificates
• javax.net.ssl.trustStorePassword: Password for unlocking the truststore
• javax.net.ssl.debug: Enables logging for SSL/TLS operations

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