hg: jdk/sandbox: 8204152: SignedObject throws NullPointerException for null keys with an initialized Signature object

[chris.hegarty at oracle.com]

Changeset: 11c7290b85ff
Author:    valeriep
Date:      2018-06-19 23:33 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/11c7290b85ff

8204152: SignedObject throws NullPointerException for null keys with an initialized Signature object
Summary: Check for null and throw InvalidKeyException to maintain same behavior
Reviewed-by: xuelei

! src/java.base/share/classes/sun/security/rsa/RSAKeyFactory.java