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Status Future consideration
Workspace IBM Java SDK for z/OS
Created by Guest
Created on Apr 23, 2018

RELATED IDEAS

Remove synchronized from java.security.SecureRandom.nextBytes(byte[] bytes) to improve performance.

java.security.SecureRandom.nextBytes(byte[] bytes) is synchronized in IBM JDK 1.8.0 version which is causing performance issue as causing other threads to wait for the lock.

Oracle and OpenJDK has removed synchronized from java.security.SecureRandom.nextBytes(byte[] bytes) implementation.

http://www.oracle.com/technetwork/java/javase/8all-relnotes-2226344.html#R180_112
https://bugs.openjdk.java.net/browse/JDK-8098581

To proof that Synchronize keyword is removed from OpenJDK implementation please see following links:
http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/c4ab046992ff

Idea priority High
  • Guest
    Reply
    |     Jun 6, 2018

    The request to remove the synchronization from SecureRandom is a valid future request but one that we cannot commit to doing at this time.

    The removal of synchronization would require an update to the java.security.SecureRandom framework and therefore a concurrent update to all of the cryptographic provider implementations on all supported Java levels simultaneously (IBMJCE, IBMJCEFIPS and IBMJCEPlus).

    Any update of the IBMJCEFIPS cryptographic provider would require a new FIPS 140-2 certification which is a long and expensive process both in external dollars for the Certification lab and in developer expense. At this time we have no plans to do another FIPS 140-2 certification of IBMJCEFIPS and are moving to a FIPS 140-2 certified version of IBMJCEPlus (using the GSKit FIPDS 140-2 certification underneath) Therefore any plans to implement the changes suggested would have to include plans to change and recertify the JCE FIPS 140-2 providers on all JVM levels and is not in our current plans. This requirement will remain open and may be implemented at a future time.

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