diff options
Diffstat (limited to 'SecurityPkg/Tcg/TcgDxe/TpmComm.c')
| -rw-r--r-- | SecurityPkg/Tcg/TcgDxe/TpmComm.c | 46 |
1 files changed, 38 insertions, 8 deletions
diff --git a/SecurityPkg/Tcg/TcgDxe/TpmComm.c b/SecurityPkg/Tcg/TcgDxe/TpmComm.c index 96732fa..28b8acd 100644 --- a/SecurityPkg/Tcg/TcgDxe/TpmComm.c +++ b/SecurityPkg/Tcg/TcgDxe/TpmComm.c @@ -1,7 +1,7 @@ /** @file
Utility functions used by TPM Dxe driver.
-Copyright (c) 2005 - 2013, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2005 - 2016, 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
@@ -14,15 +14,16 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. #include <IndustryStandard/Tpm12.h>
#include <IndustryStandard/UefiTcgPlatform.h>
-#include <Library/TpmCommLib.h>
+#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/BaseCryptLib.h>
#include "TpmComm.h"
/**
Extend a TPM PCR.
- @param[in] TpmHandle TPM handle.
@param[in] DigestToExtend The 160 bit value representing the event to be recorded.
@param[in] PcrIndex The PCR to be updated.
@param[out] NewPcrValue New PCR value after extend.
@@ -33,7 +34,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. **/
EFI_STATUS
TpmCommExtend (
- IN TIS_TPM_HANDLE TpmHandle,
IN TPM_DIGEST *DigestToExtend,
IN TPM_PCRINDEX PcrIndex,
OUT TPM_DIGEST *NewPcrValue
@@ -53,7 +53,6 @@ TpmCommExtend ( sizeof (CmdHdr) + sizeof (PcrIndex) + sizeof (*DigestToExtend);
CmdHdr.ordinal = TPM_ORD_Extend;
Status = TisPcExecute (
- TpmHandle,
"%h%d%r%/%h%r",
&CmdHdr,
PcrIndex,
@@ -75,7 +74,6 @@ TpmCommExtend ( /**
Get TPM capability flags.
- @param[in] TpmHandle TPM handle.
@param[in] FlagSubcap Flag subcap.
@param[out] FlagBuffer Pointer to the buffer for returned flag structure.
@param[in] FlagSize Size of the buffer.
@@ -86,7 +84,6 @@ TpmCommExtend ( **/
EFI_STATUS
TpmCommGetFlags (
- IN TIS_TPM_HANDLE TpmHandle,
IN UINT32 FlagSubcap,
OUT VOID *FlagBuffer,
IN UINTN FlagSize
@@ -102,7 +99,6 @@ TpmCommGetFlags ( CmdHdr.ordinal = TPM_ORD_GetCapability;
Status = TisPcExecute (
- TpmHandle,
"%h%d%d%d%/%h%d%r",
&CmdHdr,
TPM_CAP_FLAG,
@@ -168,3 +164,37 @@ TpmCommLogEvent ( );
return EFI_SUCCESS;
}
+
+/**
+ 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;
+}
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