Increase jdk.jar.maxSignatureFileSize default which is too low for JARs such as WhiteSource/Mend unified agent jar

Summary

The system property jdk.jar.maxSignatureFileSize is used to configure the maximum number of bytes for the signature-related files in a signed JAR. Increase its default value from 8000000 bytes (8 MB) to 16000000 bytes (16 MB).

Problem

The default value of the system property jdk.jar.maxSignatureFileSize is 8000000 bytes (8 MB), which is too low for JARs such as WhiteSource/Mend unified agent.

Solution

Increase the default value of the system property jdk.jar.maxSignatureFileSize from 8000000 bytes (8 MB) to 16000000 bytes (16 MB).

Specification

• Document the change of default value of the system property jdk.jar.maxSignatureFileSize in a release note (JDK-8313215).
• Document the system property jdk.jar.maxSignatureFileSize in the security guides (see JDK-8313219).