Server encryption cannot be enabled with the IBM JRE 1.7

When enabling server encryption with the IBM JRE (algorithm: IbmX509), an IllegalArgumentException is thrown from the IBM JSSE when the server is started:

ERROR 10:04:37,326 Exception encountered during startup
java.lang.IllegalArgumentException: SSLv2Hello
at com.ibm.jsse2.qb.a(qb.java:50)
at com.ibm.jsse2.pb.a(pb.java:101)
at com.ibm.jsse2.pb.<init>(pb.java:77)
at com.ibm.jsse2.oc.setEnabledProtocols(oc.java:77)
at org.apache.cassandra.security.SSLFactory.getServerSocket(SSLFactory.java:64)
at org.apache.cassandra.net.MessagingService.getServerSockets(MessagingService.java:425)
at org.apache.cassandra.net.MessagingService.listen(MessagingService.java:409)
at org.apache.cassandra.service.StorageService.prepareToJoin(StorageService.java:693)
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:623)
at org.apache.cassandra.service.StorageService.initServer(StorageService.java:515)
at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:437)
at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:567)
at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:656)

The problem is that the IBM JSSE does not support SSLv2Hello, but this protocol is hard-coded in class org.apache.cassandra.security.SSLFactory:

public static final String[] ACCEPTED_PROTOCOLS = new String[]

{"SSLv2Hello", "TLSv1", "TLSv1.1", "TLSv1.2"}

;

public static SSLServerSocket getServerSocket(EncryptionOptions options, InetAddress address, int port) throws IOException

{ SSLContext ctx = createSSLContext(options, true); SSLServerSocket serverSocket = (SSLServerSocket)ctx.getServerSocketFactory().createServerSocket(); serverSocket.setReuseAddress(true); String[] suits = filterCipherSuites(serverSocket.getSupportedCipherSuites(), options.cipher_suites); serverSocket.setEnabledCipherSuites(suits); serverSocket.setNeedClientAuth(options.require_client_auth); serverSocket.setEnabledProtocols(ACCEPTED_PROTOCOLS); serverSocket.bind(new InetSocketAddress(address, port), 500); return serverSocket; }

This ACCEPTED_PROTOCOLS array should not be hard-coded. It should rather read the protocols from configuration, or if the algorithm is IbmX509, simply do not call setEnabledProtocols - with the IBM JSSE, the enabled protocol is controlled by the protocol passed to SSLContext.getInstance.