[GR-65391] Add reflection metadata for HKDF.

PullRequest: graal/20938

Author: jovanstevanovic

substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/HKDFSupportFeature.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2025, 2025, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.oracle.svm.hosted;
+
+import org.graalvm.nativeimage.hosted.RuntimeReflection;
+
+import com.oracle.svm.core.feature.AutomaticallyRegisteredFeature;
+import com.oracle.svm.core.feature.InternalFeature;
+import com.oracle.svm.util.ReflectionUtil;
+
+@AutomaticallyRegisteredFeature
+public class HKDFSupportFeature implements InternalFeature {
+
+    @Override
+    public void beforeAnalysis(BeforeAnalysisAccess access) {
+        Class<?>[] hkdfClasses = new Class<?>[]{
+                        ReflectionUtil.lookupClass("com.sun.crypto.provider.HKDFKeyDerivation$HKDFSHA256"),
+                        ReflectionUtil.lookupClass("com.sun.crypto.provider.HKDFKeyDerivation$HKDFSHA384"),
+                        ReflectionUtil.lookupClass("com.sun.crypto.provider.HKDFKeyDerivation$HKDFSHA512")
+        };
+        access.registerReachabilityHandler(duringAnalysisAccess -> {
+            for (Class<?> hkdf : hkdfClasses) {
+                RuntimeReflection.register(hkdf);
+                RuntimeReflection.register(hkdf.getConstructors());
+            }
+        }, ReflectionUtil.lookupClass("javax.crypto.KDF"));
+    }
+}