How Do I Specify Keystore and Truststore Locations for SSL in Java?

Fetching Certificate Keystore in Java

When using SSL in a Java program, it's essential to specify the location of the keystore containing the certificate used for authentication. Java manages SSL properties at the JVM level through system properties.

Specifying the Keystore:

Set the following system properties to define the keystore:

• javax.net.ssl.keyStore: Path to the Java keystore file containing the certificate and private key.
• javax.net.ssl.keyStorePassword: Password to access both the keystore file and the private key within it.

Specifying the Server Authentication Certificate:

To specify the certificate to be used for server authentication, set the following system properties:

• javax.net.ssl.trustStore: Path to the Java keystore file containing the trusted CA certificates.
• javax.net.ssl.trustStorePassword: Password to unlock the keystore file specified by javax.net.ssl.trustStore.

Additional Notes:

• These properties can be set when running the program using java -D= or by setting them programmatically using System.setProperty.
• If a trust store location is not specified, SunJSSE looks for keystore files in $JAVA_HOME/lib/security/jssecacerts and $JAVA_HOME/lib/security/cacerts.
• To enable SSL/TLS layer logging, set javax.net.debug to ssl.

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