1 files changed, 50 insertions, 0 deletions
diff --git a/SecurityPkg/Library/TpmCommLib/TpmComm.c b/SecurityPkg/Library/TpmCommLib/TpmComm.c
new file mode 100644
index 0000000000..3197f96a99
--- /dev/null
+++ b/SecurityPkg/Library/TpmCommLib/TpmComm.c
@@ -0,0 +1,50 @@
+/** @file
+  Basic TPM command functions.
+
+Copyright (c) 2005 - 2010, 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.
+
+**/
+
+#include "CommonHeader.h"
+
+/**
+  Single function calculates SHA1 digest value for all raw data. It
+  combines Sha1Init(), Sha1Update() and Sha1Final().
+
+  @param[in]  Data          Raw data to be digested.
+  @param[in]  DataLen       Size of the raw data.
+  @param[out] Digest        Pointer to a buffer that stores the final digest.
+  
+  @retval     EFI_SUCCESS   Always successfully calculate the final digest.
+**/
+EFI_STATUS
+EFIAPI
+TpmCommHashAll (
+  IN  CONST UINT8                   *Data,
+  IN        UINTN                   DataLen,
+  OUT       TPM_DIGEST              *Digest
+  )
+{
+  VOID     *Sha1Ctx;
+  UINTN    CtxSize;
+
+  CtxSize = Sha1GetContextSize ();
+  Sha1Ctx = AllocatePool (CtxSize);
+  ASSERT (Sha1Ctx != NULL);
+
+  Sha1Init (Sha1Ctx);
+  Sha1Update (Sha1Ctx, Data, DataLen);
+  Sha1Final (Sha1Ctx, (UINT8 *)Digest);
+
+  FreePool (Sha1Ctx);
+
+  return EFI_SUCCESS;
+}
+