diff --git a/keystore/operation.h b/keystore/operation.h
new file mode 100644
index 0000000..f6f3ea7
--- /dev/null
+++ b/keystore/operation.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#ifndef KEYSTORE_OPERATION_H_
+#define KEYSTORE_OPERATION_H_
+
+#include <hardware/keymaster1.h>
+#include <binder/Binder.h>
+#include <binder/IBinder.h>
+#include <utils/LruCache.h>
+#include <utils/StrongPointer.h>
+#include <map>
+#include <vector>
+
+namespace android {
+
+/**
+ * OperationMap handles the translation of keymaster_operation_handle_t's and
+ * keymaster1_device_t's to opaque binder tokens that can be used to reference
+ * that operation at a later time by applications. It also does LRU tracking
+ * for operation pruning and keeps a mapping of clients to operations to allow
+ * for graceful handling of application death.
+ */
+class OperationMap {
+public:
+    OperationMap(IBinder::DeathRecipient* deathRecipient);
+    sp<IBinder> addOperation(keymaster_operation_handle_t handle,
+                             const keymaster1_device_t* dev, sp<IBinder> appToken,
+                             bool pruneable);
+    bool getOperation(sp<IBinder> token, keymaster_operation_handle_t* outHandle,
+                      const keymaster1_device_t** outDev);
+    bool removeOperation(sp<IBinder> token);
+    bool hasPruneableOperation();
+    sp<IBinder> getOldestPruneableOperation();
+    std::vector<sp<IBinder>> getOperationsForToken(sp<IBinder> appToken);
+
+private:
+    void updateLru(sp<IBinder> token);
+    void removeOperationTracking(sp<IBinder> token, sp<IBinder> appToken);
+    struct Operation {
+        Operation();
+        Operation(keymaster_operation_handle_t handle, const keymaster1_device_t* device,
+                  sp<IBinder> appToken);
+        keymaster_operation_handle_t handle;
+        const keymaster1_device_t* device;
+        sp<IBinder> appToken;
+    };
+    std::map<sp<IBinder>, struct Operation> mMap;
+    std::vector<sp<IBinder>> mLru;
+    std::map<sp<IBinder>, std::vector<sp<IBinder>>> mAppTokenMap;
+    IBinder::DeathRecipient* mDeathRecipient;
+};
+} // namespace android
+#endif