Using the provider string when creating the SSLContext in case of no

keystore.

jetty-util/src/main/java/org/eclipse/jetty/util/ssl/SslContextFactory.java

@@ -258,7 +258,7 @@ public class SslContextFactory extends AbstractLifeCycle
                 }
 
                 SecureRandom secureRandom = (_secureRandomAlgorithm == null)?null:SecureRandom.getInstance(_secureRandomAlgorithm);
-                SSLContext context = SSLContext.getInstance(_sslProtocol);
+                SSLContext context = _sslProvider == null ? SSLContext.getInstance(_sslProtocol) : SSLContext.getInstance(_sslProtocol, _sslProvider);
                 context.init(null, trust_managers, secureRandom);
                 _context = context;
             }