diff --git a/MdePkg/Include/Guid/DeviceAuthentication.h b/MdePkg/Include/Guid/DeviceAuthentication.h
new file mode 100644
index 0000000000..0dd933dfa5
--- /dev/null
+++ b/MdePkg/Include/Guid/DeviceAuthentication.h
@@ -0,0 +1,61 @@
+/** @file
+  Guid & data structure used for Device Security.
+
+  Copyright (c) 2024, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef EFI_DEVICE_AUTHENTICATION_GUID_H_
+#define EFI_DEVICE_AUTHENTICATION_GUID_H_
+
+/**
+  This is a signature database for device authentication, instead of image authentication.
+
+  The content of the signature database is same as the one in db/dbx. (a list of EFI_SIGNATURE_LIST)
+**/
+#define EFI_DEVICE_SIGNATURE_DATABASE_GUID \
+  {0xb9c2b4f4, 0xbf5f, 0x462d, 0x8a, 0xdf, 0xc5, 0xc7, 0xa, 0xc3, 0x5d, 0xad}
+#define EFI_DEVICE_SECURITY_DATABASE  L"devdb"
+
+extern EFI_GUID  gEfiDeviceSignatureDatabaseGuid;
+
+/**
+  Signature Database:
+
+  +---------------------------------------+ <-----------------
+  | SignatureType (GUID)                  |                  |
+  +---------------------------------------+                  |
+  | SignatureListSize (UINT32)            |                  |
+  +---------------------------------------+                  |
+  | SignatureHeaderSize (UINT32)          |                  |
+  +---------------------------------------+                  |
+  | SignatureSize (UINT32)                |                  |-EFI_SIGNATURE_LIST (1)
+  +---------------------------------------+                  |
+  | SignatureHeader (SignatureHeaderSize) |                  |
+  +---------------------------------------+ <--              |
+  | SignatureOwner (GUID)                 |   |              |
+  +---------------------------------------+   |-EFI_SIGNATURE_DATA (1)
+  | SignatureData (SignatureSize - 16)    |   |              |
+  +---------------------------------------+ <--              |
+  | SignatureOwner (GUID)                 |   |              |
+  +---------------------------------------+   |-EFI_SIGNATURE_DATA (n)
+  | SignatureData (SignatureSize - 16)    |   |              |
+  +---------------------------------------+ <-----------------
+  | SignatureType (GUID)                  |                  |
+  +---------------------------------------+                  |
+  | SignatureListSize (UINT32)            |                  |-EFI_SIGNATURE_LIST (n)
+  +---------------------------------------+                  |
+  | ...                                   |                  |
+  +---------------------------------------+ <-----------------
+
+  SignatureType := EFI_CERT_SHAxxx_GUID |
+                   EFI_CERT_RSA2048_GUID |
+                   EFI_CERT_RSA2048_SHAxxx_GUID |
+                   EFI_CERT_X509_GUID |
+                   EFI_CERT_X509_SHAxxx_GUID
+  (xxx = 256, 384, 512)
+
+**/
+
+#endif