diff --git a/audio/common/2.0/Android.bp b/audio/common/2.0/Android.bp
index 450e04f..679d6b0 100644
--- a/audio/common/2.0/Android.bp
+++ b/audio/common/2.0/Android.bp
@@ -15,9 +15,6 @@
     root: "android.hardware",
     // TODO(b/153609531): remove when no longer needed.
     native_bridge_supported: true,
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "types.hal",
     ],
diff --git a/automotive/evs/aidl/Android.bp b/automotive/evs/aidl/Android.bp
index 3bfe8f3..dfb15c6 100644
--- a/automotive/evs/aidl/Android.bp
+++ b/automotive/evs/aidl/Android.bp
@@ -42,9 +42,6 @@
             enabled: false,
         },
         ndk: {
-            vndk: {
-                enabled: false,
-            },
             min_sdk_version: "29",
         },
     },
diff --git a/common/aidl/Android.bp b/common/aidl/Android.bp
index 1457b8a..11de087 100644
--- a/common/aidl/Android.bp
+++ b/common/aidl/Android.bp
@@ -11,10 +11,7 @@
     name: "android.hardware.common",
     host_supported: true,
     vendor_available: true,
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
+    double_loadable: true,
     vndk_use_version: "2",
     srcs: [
         "android/hardware/common/*.aidl",
diff --git a/common/fmq/aidl/Android.bp b/common/fmq/aidl/Android.bp
index 6c37213..17c11ab 100644
--- a/common/fmq/aidl/Android.bp
+++ b/common/fmq/aidl/Android.bp
@@ -11,10 +11,7 @@
     name: "android.hardware.common.fmq",
     host_supported: true,
     vendor_available: true,
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
+    double_loadable: true,
     srcs: [
         "android/hardware/common/fmq/*.aidl",
     ],
diff --git a/configstore/1.0/Android.bp b/configstore/1.0/Android.bp
index 51fc44c..ef781d2 100644
--- a/configstore/1.0/Android.bp
+++ b/configstore/1.0/Android.bp
@@ -12,9 +12,6 @@
 hidl_interface {
     name: "android.hardware.configstore@1.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "types.hal",
         "ISurfaceFlingerConfigs.hal",
diff --git a/configstore/1.1/Android.bp b/configstore/1.1/Android.bp
index ec745dd..c8c3f5e 100644
--- a/configstore/1.1/Android.bp
+++ b/configstore/1.1/Android.bp
@@ -12,9 +12,6 @@
 hidl_interface {
     name: "android.hardware.configstore@1.1",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "types.hal",
         "ISurfaceFlingerConfigs.hal",
diff --git a/configstore/utils/Android.bp b/configstore/utils/Android.bp
index 7ed3f68..b62f1bc 100644
--- a/configstore/utils/Android.bp
+++ b/configstore/utils/Android.bp
@@ -26,13 +26,10 @@
 cc_library_shared {
     name: "android.hardware.configstore-utils",
     vendor_available: true,
-    vndk: {
-        enabled: true,
-    },
     double_loadable: true,
     defaults: ["hidl_defaults"],
 
-    srcs: [ "ConfigStoreUtils.cpp" ],
+    srcs: ["ConfigStoreUtils.cpp"],
 
     export_include_dirs: ["include"],
 
@@ -40,12 +37,12 @@
         "android.hardware.configstore@1.0",
         "android.hardware.configstore@1.1",
         "libbase",
-        "libhidlbase"
+        "libhidlbase",
     ],
     export_shared_lib_headers: [
         "android.hardware.configstore@1.0",
         "android.hardware.configstore@1.1",
         "libbase",
-        "libhidlbase"
+        "libhidlbase",
     ],
 }
diff --git a/confirmationui/support/Android.bp b/confirmationui/support/Android.bp
index 1200115..67cc04b 100644
--- a/confirmationui/support/Android.bp
+++ b/confirmationui/support/Android.bp
@@ -27,9 +27,6 @@
     name: "android.hardware.confirmationui-support-lib",
     vendor_available: true,
     host_supported: true,
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "src/cbor.cpp",
         "src/confirmationui_utils.cpp",
diff --git a/contexthub/OWNERS b/contexthub/OWNERS
index ee25833..f35961a 100644
--- a/contexthub/OWNERS
+++ b/contexthub/OWNERS
@@ -1,3 +1,2 @@
 # Bug component: 156070
-arthuri@google.com
 bduddie@google.com
diff --git a/graphics/allocator/2.0/Android.bp b/graphics/allocator/2.0/Android.bp
index 36158e9..5d3f883 100644
--- a/graphics/allocator/2.0/Android.bp
+++ b/graphics/allocator/2.0/Android.bp
@@ -13,9 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.allocator@2.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "IAllocator.hal",
     ],
diff --git a/graphics/allocator/3.0/Android.bp b/graphics/allocator/3.0/Android.bp
index 0100f6f..767a79f 100644
--- a/graphics/allocator/3.0/Android.bp
+++ b/graphics/allocator/3.0/Android.bp
@@ -13,9 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.allocator@3.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "IAllocator.hal",
     ],
diff --git a/graphics/allocator/4.0/Android.bp b/graphics/allocator/4.0/Android.bp
index 5d7a4a9..590ecf4 100644
--- a/graphics/allocator/4.0/Android.bp
+++ b/graphics/allocator/4.0/Android.bp
@@ -13,9 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.allocator@4.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "IAllocator.hal",
     ],
diff --git a/graphics/allocator/aidl/Android.bp b/graphics/allocator/aidl/Android.bp
index 6e24edc..0b916bf 100644
--- a/graphics/allocator/aidl/Android.bp
+++ b/graphics/allocator/aidl/Android.bp
@@ -11,10 +11,7 @@
 aidl_interface {
     name: "android.hardware.graphics.allocator",
     vendor_available: true,
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
+    double_loadable: true,
     vndk_use_version: "2",
     srcs: ["android/hardware/graphics/allocator/*.aidl"],
     imports: [
@@ -34,9 +31,6 @@
                 "//apex_available:platform",
                 "com.android.media.swcodec",
             ],
-            vndk: {
-                enabled: true,
-            },
             min_sdk_version: "29",
         },
     },
diff --git a/graphics/bufferqueue/1.0/Android.bp b/graphics/bufferqueue/1.0/Android.bp
index fe46b5e..c7c6453 100644
--- a/graphics/bufferqueue/1.0/Android.bp
+++ b/graphics/bufferqueue/1.0/Android.bp
@@ -13,9 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.bufferqueue@1.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "IGraphicBufferProducer.hal",
         "IProducerListener.hal",
diff --git a/graphics/bufferqueue/2.0/Android.bp b/graphics/bufferqueue/2.0/Android.bp
index c2b0985..e9f75c1 100644
--- a/graphics/bufferqueue/2.0/Android.bp
+++ b/graphics/bufferqueue/2.0/Android.bp
@@ -13,9 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.bufferqueue@2.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "types.hal",
         "IGraphicBufferProducer.hal",
diff --git a/graphics/common/1.0/Android.bp b/graphics/common/1.0/Android.bp
index 786953b..b876bf3 100644
--- a/graphics/common/1.0/Android.bp
+++ b/graphics/common/1.0/Android.bp
@@ -13,10 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.common@1.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
     srcs: [
         "types.hal",
     ],
diff --git a/graphics/common/1.1/Android.bp b/graphics/common/1.1/Android.bp
index d857f80..ff6c9b7 100644
--- a/graphics/common/1.1/Android.bp
+++ b/graphics/common/1.1/Android.bp
@@ -13,10 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.common@1.1",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
     srcs: [
         "types.hal",
     ],
diff --git a/graphics/common/1.2/Android.bp b/graphics/common/1.2/Android.bp
index 17d0c20..b4663e5 100644
--- a/graphics/common/1.2/Android.bp
+++ b/graphics/common/1.2/Android.bp
@@ -13,10 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.common@1.2",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
     srcs: [
         "types.hal",
     ],
diff --git a/graphics/common/aidl/Android.bp b/graphics/common/aidl/Android.bp
index 605299f..c1bb1ef 100644
--- a/graphics/common/aidl/Android.bp
+++ b/graphics/common/aidl/Android.bp
@@ -12,10 +12,7 @@
     name: "android.hardware.graphics.common",
     host_supported: true,
     vendor_available: true,
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
+    double_loadable: true,
     vndk_use_version: "5",
     srcs: [
         "android/hardware/graphics/common/*.aidl",
diff --git a/graphics/composer/aidl/Android.bp b/graphics/composer/aidl/Android.bp
index d60f8c4..9b6b196 100644
--- a/graphics/composer/aidl/Android.bp
+++ b/graphics/composer/aidl/Android.bp
@@ -28,10 +28,7 @@
     name: "android.hardware.graphics.composer3",
     host_supported: true,
     vendor_available: true,
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
+    double_loadable: true,
     frozen: false,
     vndk_use_version: "1",
     srcs: [
@@ -50,11 +47,6 @@
             sdk_version: "module_current",
             enabled: false,
         },
-        ndk: {
-            vndk: {
-                enabled: true,
-            },
-        },
         rust: {
             enabled: true,
         },
diff --git a/graphics/mapper/2.0/Android.bp b/graphics/mapper/2.0/Android.bp
index 81040ab..07ca1cb 100644
--- a/graphics/mapper/2.0/Android.bp
+++ b/graphics/mapper/2.0/Android.bp
@@ -13,10 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.mapper@2.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
     srcs: [
         "types.hal",
         "IMapper.hal",
diff --git a/graphics/mapper/2.1/Android.bp b/graphics/mapper/2.1/Android.bp
index 1308a6c..f6e089a 100644
--- a/graphics/mapper/2.1/Android.bp
+++ b/graphics/mapper/2.1/Android.bp
@@ -13,10 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.mapper@2.1",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
     srcs: [
         "IMapper.hal",
     ],
diff --git a/graphics/mapper/3.0/Android.bp b/graphics/mapper/3.0/Android.bp
index b49806f..0e15af9 100644
--- a/graphics/mapper/3.0/Android.bp
+++ b/graphics/mapper/3.0/Android.bp
@@ -13,10 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.mapper@3.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
     srcs: [
         "types.hal",
         "IMapper.hal",
diff --git a/graphics/mapper/4.0/Android.bp b/graphics/mapper/4.0/Android.bp
index c07f73c..b2dd7d2 100644
--- a/graphics/mapper/4.0/Android.bp
+++ b/graphics/mapper/4.0/Android.bp
@@ -13,10 +13,6 @@
 hidl_interface {
     name: "android.hardware.graphics.mapper@4.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
     srcs: [
         "types.hal",
         "IMapper.hal",
diff --git a/media/1.0/Android.bp b/media/1.0/Android.bp
index 22a6d59..d5ef95a 100644
--- a/media/1.0/Android.bp
+++ b/media/1.0/Android.bp
@@ -12,9 +12,6 @@
 hidl_interface {
     name: "android.hardware.media@1.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "types.hal",
     ],
diff --git a/media/bufferpool/2.0/Android.bp b/media/bufferpool/2.0/Android.bp
index fd6f08b..470a11f 100644
--- a/media/bufferpool/2.0/Android.bp
+++ b/media/bufferpool/2.0/Android.bp
@@ -13,9 +13,6 @@
 hidl_interface {
     name: "android.hardware.media.bufferpool@2.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "types.hal",
         "IAccessor.hal",
diff --git a/media/omx/1.0/Android.bp b/media/omx/1.0/Android.bp
index ea63467..cd1b9b6 100644
--- a/media/omx/1.0/Android.bp
+++ b/media/omx/1.0/Android.bp
@@ -12,9 +12,6 @@
 hidl_interface {
     name: "android.hardware.media.omx@1.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "types.hal",
         "IGraphicBufferSource.hal",
diff --git a/memtrack/1.0/Android.bp b/memtrack/1.0/Android.bp
index bf8db3f..1aeec59 100644
--- a/memtrack/1.0/Android.bp
+++ b/memtrack/1.0/Android.bp
@@ -12,9 +12,6 @@
 hidl_interface {
     name: "android.hardware.memtrack@1.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "types.hal",
         "IMemtrack.hal",
diff --git a/memtrack/aidl/Android.bp b/memtrack/aidl/Android.bp
index 0d1c241..4973d1e 100644
--- a/memtrack/aidl/Android.bp
+++ b/memtrack/aidl/Android.bp
@@ -34,9 +34,6 @@
             enabled: false,
         },
         ndk: {
-            vndk: {
-                enabled: true,
-            },
         },
     },
     frozen: true,
diff --git a/renderscript/1.0/Android.bp b/renderscript/1.0/Android.bp
index 1f2ac15..c699141 100644
--- a/renderscript/1.0/Android.bp
+++ b/renderscript/1.0/Android.bp
@@ -14,10 +14,6 @@
     root: "android.hardware",
     // TODO(b/153609531): remove when no longer needed.
     native_bridge_supported: true,
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
     srcs: [
         "types.hal",
         "IContext.hal",
diff --git a/security/secretkeeper/aidl/Android.bp b/security/secretkeeper/aidl/Android.bp
index 5307bf9..48ce365 100644
--- a/security/secretkeeper/aidl/Android.bp
+++ b/security/secretkeeper/aidl/Android.bp
@@ -28,7 +28,8 @@
     frozen: false,
     backend: {
         java: {
-            enabled: false,
+            enabled: true,
+            platform_apis: true,
         },
         ndk: {
             enabled: true,
diff --git a/soundtrigger/2.0/Android.bp b/soundtrigger/2.0/Android.bp
index 996105c..828b9ec 100644
--- a/soundtrigger/2.0/Android.bp
+++ b/soundtrigger/2.0/Android.bp
@@ -12,9 +12,6 @@
 hidl_interface {
     name: "android.hardware.soundtrigger@2.0",
     root: "android.hardware",
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "types.hal",
         "ISoundTriggerHw.hal",
diff --git a/soundtrigger/2.0/default/Android.bp b/soundtrigger/2.0/default/Android.bp
index 8236e30..2cbf041 100644
--- a/soundtrigger/2.0/default/Android.bp
+++ b/soundtrigger/2.0/default/Android.bp
@@ -26,9 +26,6 @@
     name: "android.hardware.soundtrigger@2.0-core",
     defaults: ["hidl_defaults"],
     vendor_available: true,
-    vndk: {
-        enabled: true,
-    },
     srcs: [
         "SoundTriggerHalImpl.cpp",
     ],
diff --git a/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl
new file mode 100644
index 0000000..53d722c
--- /dev/null
+++ b/staging/security/see/hwcrypto/aidl/aidl_api/android.hardware.security.see/current/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.security.see.hwcrypto;
+interface IHwCryptoKey {
+  android.hardware.security.see.hwcrypto.IHwCryptoKey.DiceCurrentBoundKeyResult deriveCurrentDicePolicyBoundKey();
+  android.hardware.security.see.hwcrypto.IHwCryptoKey.DiceBoundKeyResult deriveDicePolicyBoundKey(in byte[] dicePolicyForKeyVersion);
+  android.hardware.security.see.hwcrypto.IHwCryptoKey.DerivedKey deriveKey(in android.hardware.security.see.hwcrypto.IHwCryptoKey.DerivedKeyParameters parameters);
+  parcelable DiceCurrentBoundKeyResult {
+    android.hardware.security.see.hwcrypto.IOpaqueKey diceBoundKey;
+    byte[] dicePolicyForKeyVersion;
+  }
+  parcelable DiceBoundKeyResult {
+    android.hardware.security.see.hwcrypto.IOpaqueKey diceBoundKey;
+    boolean dicePolicyWasCurrent;
+  }
+  parcelable ClearKeyPolicy {
+    int keySizeBytes;
+  }
+  union DerivedKeyPolicy {
+    android.hardware.security.see.hwcrypto.KeyPolicy opaqueKey;
+    android.hardware.security.see.hwcrypto.IHwCryptoKey.ClearKeyPolicy clearKey;
+  }
+  parcelable DerivedKeyParameters {
+    android.hardware.security.see.hwcrypto.IOpaqueKey derivationKey;
+    android.hardware.security.see.hwcrypto.IHwCryptoKey.DerivedKeyPolicy keyPolicy;
+    byte[] context;
+  }
+  union DerivedKey {
+    byte[] explicitKey = {};
+    android.hardware.security.see.hwcrypto.IOpaqueKey opaque;
+  }
+}
diff --git a/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl
new file mode 100644
index 0000000..08c3173
--- /dev/null
+++ b/staging/security/see/hwcrypto/aidl/android/hardware/security/see/hwcrypto/IHwCryptoKey.aidl
@@ -0,0 +1,154 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.security.see.hwcrypto;
+
+import android.hardware.security.see.hwcrypto.IOpaqueKey;
+import android.hardware.security.see.hwcrypto.KeyPolicy;
+
+/*
+ * Higher level interface to access and generate keys.
+ */
+interface IHwCryptoKey {
+    parcelable DiceCurrentBoundKeyResult {
+        /*
+         * Key cryptographically bound to a DICE policy.
+         */
+        IOpaqueKey diceBoundKey;
+
+        /*
+         * Current dice policy which was used to generate the returned key. This policy is
+         * opaque from this service perspective (it will be sent to an Authentication Manager
+         * Service to be verified). It follows the structure defined on DicePolicy.cddl, located
+         * under hardware/interfaces/security/authgraph/aidl/android/hardware/security/authgraph/
+         * with the caveat that it could be encrypted if the client does not have enough permissions
+         * to see the device dice policy information.
+         */
+        byte[] dicePolicyForKeyVersion;
+    }
+
+    parcelable DiceBoundKeyResult {
+        /*
+         * Key cryptographically bound to a DICE policy.
+         */
+        IOpaqueKey diceBoundKey;
+
+        /*
+         * Indicates if the diceBoundKey returned was created using a current DICE policy. The
+         * caller can use this to detect if an old policy was provided and rotate its keys if so
+         * desired. Old, valid policies remain usable, but care needs to be taken to not continue to
+         * use a potentially compromised key.
+         */
+        boolean dicePolicyWasCurrent;
+    }
+
+    parcelable ClearKeyPolicy {
+        /*
+         * Indicates the desired key size. It will be used to calculate how many bytes of key
+         * material should be returned.
+         */
+        int keySizeBytes;
+    }
+
+    union DerivedKeyPolicy {
+        /*
+         * Policy for the newly derived opaque key. Defines how the key can be used and its type.
+         */
+        KeyPolicy opaqueKey;
+
+        /*
+         * If used we will derive a clear key and pass it back as an array of bytes on
+         * <code>HwCryptoKeyMaterial::explicitKey</code>.
+         */
+        ClearKeyPolicy clearKey;
+    }
+
+    parcelable DerivedKeyParameters {
+        /*
+         * Key to be used to derive the new key using HKDF.
+         */
+        IOpaqueKey derivationKey;
+
+        /*
+         * Policy for the newly derived key. Depending on its type, either a clear or opaque key
+         * will be derived.
+         */
+        DerivedKeyPolicy keyPolicy;
+
+        /*
+         * An arbitrary set of bytes incorporated into the key derivation. May have
+         * an implementation-specific maximum length, but it is guaranteed to accept
+         * at least 32 bytes.
+         */
+        byte[] context;
+    }
+
+    union DerivedKey {
+        /*
+         * Derived key in clear format.
+         */
+        byte[] explicitKey = {};
+
+        /*
+         * Derived key as a key token to be used only through the HWCrypto service.
+         */
+        IOpaqueKey opaque;
+    }
+
+    /*
+     * deriveCurrentDicePolicyBoundKey() - Derives a versioned key tied to the caller's current DICE
+     *                              policy. It will return this current policy back to the caller
+     *                              along with the generated key.
+     *
+     * Return:
+     *      Ok(DiceCurrentBoundKeyResult) on success, service specific error based on
+     *      <code>HalErrorCode</code> otherwise.
+     */
+    DiceCurrentBoundKeyResult deriveCurrentDicePolicyBoundKey();
+
+    /*
+     * deriveDicePolicyBoundKey() - Derive a versioned key by checking the provided DICE policy
+     *                              against the caller and then using it as a context for deriving
+     *                              the returned key.
+     *
+     * @dicePolicyForKeyVersion:
+     *     Policy used to derive keys tied to specific versions. Using this parameter
+     *     the caller can tie a derived key to a minimum version of itself, so in the future only
+     *     itself or a more recent version can derive the same key. This parameter is opaque to the
+     *     caller and it could be encrypted in the case the client doesn't have permission to know
+     *     the dice chain.
+     *     When implementing this function, this parameter shall be one of the components fed
+     *     to the KDF context and it needs to be checked against the caller DICE certificate before
+     *     being used.
+     *
+     * Return:
+     *      Ok(DiceBoundKeyResult) on success, service specific error based on
+     *      <code>HalErrorCode</code> otherwise.
+     */
+    DiceBoundKeyResult deriveDicePolicyBoundKey(in byte[] dicePolicyForKeyVersion);
+
+    /*
+     * deriveKey() - Derive a new key based on the given key, policy and context.
+     *
+     * @parameters:
+     *      Parameters used for the key derivation. See <code>DerivedKeyParameters</code> on this
+     *      file for more information.
+     *
+     * Return:
+     *      Ok(HwCryptoKeyMaterial) on success, service specific error based on
+     *      <code>HalErrorCode</code> otherwise.
+     */
+    DerivedKey deriveKey(in DerivedKeyParameters parameters);
+}