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diff --git a/keystore/key_creation_log_handler.h b/keystore/key_creation_log_handler.h
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+/*
+ * Copyright (C) 2018 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 KEY_CREATION_LOG_HANDLER_H_
+#define KEY_CREATION_LOG_HANDLER_H_
+
+#include <keystore/keystore_hidl_support.h>
+
+namespace keystore {
+
+/**
+ * Following enums are defined as a part of the workaround to log the repeated
+ * values of ENUM_REP type. The workaround is to represent the repeated values
+ * of ENUM_REP type as a bitmap and the following enums define their positions
+ * in the bitmap.
+ */
+
+enum PaddingModeBitPosition : int32_t {
+    RSA_OAEP_BIT_POS = 1,
+    RSA_PSS_BIT_POS = 2,
+    RSA_PKCS1_1_5_ENCRYPT_BIT_POS = 3,
+    RSA_PKCS1_1_5_SIGN_BIT_POS = 4,
+    PKCS7_BIT_POS = 5,
+};
+
+enum DigestBitPosition : int32_t {
+    MD5_BIT_POS = 1,
+    SHA1_BIT_POS = 2,
+    SHA_2_224_BIT_POS = 3,
+    SHA_2_256_BIT_POS = 4,
+    SHA_2_384_BIT_POS = 5,
+    SHA_2_512_BIT_POS = 6,
+};
+
+enum BlockModeBitPosition : int32_t {
+    ECB_BIT_POS = 1,
+    CBC_BIT_POS = 2,
+    CTR_BIT_POS = 3,
+    GCM_BIT_POS = 4,
+};
+
+enum KeyPurposeBitPosition : int32_t {
+    ENCRYPT_BIT_POS = 1,
+    DECRYPT_BIT_POS = 2,
+    SIGN_BIT_POS = 3,
+    VERIFY_BIT_POS = 4,
+    WRAP_KEY_BIT_POS = 5,
+};
+
+// None is an enum value for digest and a deprecated value for padding mode
+const int32_t NONE_BIT_POS = 0;
+
+void logKeystoreKeyCreationEvent(const hidl_vec<KeyParameter>& keyParams,
+                                 bool wasCreationSuccessful, int32_t errorCode);
+
+}  // namespace keystore
+
+#endif  // KEY_CREATION_LOG_HANDLER_H_