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diff --git a/Core/SecurityPkg/RandomNumberGenerator/RngDxe/AesCore.h b/Core/SecurityPkg/RandomNumberGenerator/RngDxe/AesCore.h
new file mode 100644
index 0000000000..8279c61160
--- /dev/null
+++ b/Core/SecurityPkg/RandomNumberGenerator/RngDxe/AesCore.h
@@ -0,0 +1,37 @@
+/** @file
+  Function prototype for AES Block Cipher support.
+
+Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution.  The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef __AES_CORE_H__
+#define __AES_CORE_H__
+
+/**
+  Encrypts one single block data (128 bits) with AES algorithm.
+
+  @param[in]  Key                AES symmetric key buffer.
+  @param[in]  InData             One block of input plaintext to be encrypted.
+  @param[out] OutData            Encrypted output ciphertext.
+
+  @retval EFI_SUCCESS            AES Block Encryption succeeded.
+  @retval EFI_INVALID_PARAMETER  One or more parameters are invalid.
+
+**/
+EFI_STATUS
+EFIAPI
+AesEncrypt (
+  IN  UINT8        *Key,
+  IN  UINT8        *InData,
+  OUT UINT8        *OutData
+  );
+
+#endif  // __AES_CORE_H__