DN keyMgrDN = config.getKeyManagerProviderDN();
DN trustMgrDN = config.getTrustManagerProviderDN();
KeyManagerProvider<?> keyManagerProvider =
DirectoryServer.getKeyManagerProvider(keyMgrDN);
if (keyManagerProvider == null)
keyManagerProvider = new NullKeyManagerProvider();
TrustManagerProvider<?> trustManagerProvider =
DirectoryServer.getTrustManagerProvider(trustMgrDN);
if (trustManagerProvider == null)
trustManagerProvider = new NullTrustManagerProvider();
sslContext = SSLContext.getInstance(SSL_CONTEXT_INSTANCE_NAME);