Comment # 2 on bug 982366 from Fridrich Strba

In: /usr/%{_lib}/jvm/java-1.8.0-openjdk-1.8.0/jre/lib/security/java.security,
there are these two lines:

jdk.certpath.disabledAlgorithms=MD2, MD5, RSA keySize < 1024

and

jdk.tls.disabledAlgorithms=SSLv3, RC4, MD5withRSA, DH keySize < 768

that might actually prevent the SSL connection. If your server uses one of the
algorithms, you might modify this configuration file. But, for instance, SSLv3
is disabled because it is insecure. Two CPU releases ago, some certificate
versions were disabled as part of a fix for one security bug.